req.py
author Sylvain Thénault <sylvain.thenault@logilab.fr>
Fri, 09 Apr 2010 11:16:00 +0200
branchstable
changeset 5193 c9671feff5e2
parent 4933 433174d9394f
child 5174 78438ad513ca
child 5199 ebb50479d2ab
permissions -rw-r--r--
[session] no way for queries from an InternalSession to be a dbapi query
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"""Base class for request/session
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:organization: Logilab
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:copyright: 2001-2010 LOGILAB S.A. (Paris, FRANCE), license is LGPL v2.
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:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr
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:license: Library General Public License version 2 - http://www.gnu.org/licenses
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"""
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__docformat__ = "restructuredtext en"
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from warnings import warn
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from urlparse import urlsplit, urlunsplit
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from urllib import quote as urlquote, unquote as urlunquote
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from datetime import time, datetime, timedelta
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from cgi import parse_qs, parse_qsl
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from logilab.common.decorators import cached
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from logilab.common.deprecation import deprecated
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from logilab.common.date import ustrftime, strptime, todate, todatetime
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from cubicweb import Unauthorized, RegistryException, typed_eid
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from cubicweb.rset import ResultSet
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ONESECOND = timedelta(0, 1, 0)
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CACHE_REGISTRY = {}
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def _check_cw_unsafe(kwargs):
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    if kwargs.pop('_cw_unsafe', False):
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        warn('[3.7] _cw_unsafe argument is deprecated, now unsafe by '
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             'default, control it using cw_[read|write]_security.',
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             DeprecationWarning, stacklevel=3)
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class Cache(dict):
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    def __init__(self):
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        super(Cache, self).__init__()
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        _now = datetime.now()
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        self.cache_creation_date = _now
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        self.latest_cache_lookup = _now
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class RequestSessionBase(object):
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    """base class containing stuff shared by server session and web request
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    request/session is the main resources accessor, mainly through it's vreg
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    attribute:
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    :vreg:
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      the instance's registry
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    :vreg.schema:
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      the instance's schema
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    :vreg.config:
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      the instance's configuration
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    """
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    def __init__(self, vreg):
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        self.vreg = vreg
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        try:
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            encoding = vreg.property_value('ui.encoding')
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        except: # no vreg or property not registered
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            encoding = 'utf-8'
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        self.encoding = encoding
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        # cache result of execution for (rql expr / eids),
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        # should be emptied on commit/rollback of the server session / web
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        # connection
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        self.local_perm_cache = {}
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        self._ = unicode
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    def property_value(self, key):
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        """return value of the property with the given key, giving priority to
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        user specific value if any, else using site value
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        """
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        if self.user:
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            return self.user.property_value(key)
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        return self.vreg.property_value(key)
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    def etype_rset(self, etype, size=1):
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        """return a fake result set for a particular entity type"""
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        rset = ResultSet([('A',)]*size, '%s X' % etype,
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                         description=[(etype,)]*size)
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        def get_entity(row, col=0, etype=etype, req=self, rset=rset):
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            return req.vreg.etype_class(etype)(req, rset, row, col)
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        rset.get_entity = get_entity
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        rset.req = self
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        return rset
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    def eid_rset(self, eid, etype=None):
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        """return a result set for the given eid without doing actual query
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        (we have the eid, we can suppose it exists and user has access to the
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        entity)
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        """
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        eid = typed_eid(eid)
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        if etype is None:
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            etype = self.describe(eid)[0]
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        rset = ResultSet([(eid,)], 'Any X WHERE X eid %(x)s', {'x': eid},
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                         [(etype,)])
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        rset.req = self
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        return rset
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    def empty_rset(self):
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        """return a result set for the given eid without doing actual query
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    99
        (we have the eid, we can suppose it exists and user has access to the
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        entity)
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        """
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        rset = ResultSet([], 'Any X WHERE X eid -1')
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        rset.req = self
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        return rset
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   105
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   106
    def entity_from_eid(self, eid, etype=None):
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        """return an entity instance for the given eid. No query is done"""
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   108
        try:
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            return self.entity_cache(eid)
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   110
        except KeyError:
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            rset = self.eid_rset(eid, etype)
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   112
            entity = rset.get_entity(0, 0)
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            self.set_entity_cache(entity)
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   114
            return entity
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   115
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   116
    def entity_cache(self, eid):
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        raise KeyError
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    def set_entity_cache(self, entity):
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        pass
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   121
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    # XXX move to CWEntityManager or even better as factory method (unclear
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   123
    # where yet...)
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    def create_entity(self, etype, **kwargs):
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        """add a new entity of the given type
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   127
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        Example (in a shell session):
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        >>> c = create_entity('Company', name=u'Logilab')
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        >>> create_entity('Person', firstname=u'John', lastname=u'Doe',
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        ...               works_for=c)
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        """
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        _check_cw_unsafe(kwargs)
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        execute = self.execute
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   137
        rql = 'INSERT %s X' % etype
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        relations = []
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        restrictions = set()
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        cachekey = []
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        pending_relations = []
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        for attr, value in kwargs.items():
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            if isinstance(value, (tuple, list, set, frozenset)):
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                if len(value) == 1:
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                    value = iter(value).next()
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   146
                else:
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                    del kwargs[attr]
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                    pending_relations.append( (attr, value) )
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   149
                    continue
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            if hasattr(value, 'eid'): # non final relation
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                rvar = attr.upper()
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                # XXX safer detection of object relation
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                if attr.startswith('reverse_'):
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   154
                    relations.append('%s %s X' % (rvar, attr[len('reverse_'):]))
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   155
                else:
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                    relations.append('X %s %s' % (attr, rvar))
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                restriction = '%s eid %%(%s)s' % (rvar, attr)
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                if not restriction in restrictions:
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                    restrictions.add(restriction)
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   160
                cachekey.append(attr)
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                kwargs[attr] = value.eid
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   162
            else: # attribute
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                relations.append('X %s %%(%s)s' % (attr, attr))
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        if relations:
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   165
            rql = '%s: %s' % (rql, ', '.join(relations))
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   166
        if restrictions:
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   167
            rql = '%s WHERE %s' % (rql, ', '.join(restrictions))
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   168
        created = execute(rql, kwargs, cachekey).get_entity(0, 0)
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   169
        for attr, values in pending_relations:
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   170
            if attr.startswith('reverse_'):
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   171
                restr = 'Y %s X' % attr[len('reverse_'):]
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   172
            else:
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                restr = 'X %s Y' % attr
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            execute('SET %s WHERE X eid %%(x)s, Y eid IN (%s)' % (
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                restr, ','.join(str(r.eid) for r in values)),
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                    {'x': created.eid}, 'x', build_descr=False)
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   177
        return created
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   178
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    def ensure_ro_rql(self, rql):
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        """raise an exception if the given rql is not a select query"""
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   181
        first = rql.split(' ', 1)[0].lower()
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        if first in ('insert', 'set', 'delete'):
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            raise Unauthorized(self._('only select queries are authorized'))
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   184
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   185
    def get_cache(self, cachename):
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        """
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        NOTE: cachename should be dotted names as in :
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   188
        - cubicweb.mycache
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   189
        - cubes.blog.mycache
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   190
        - etc.
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        """
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        if cachename in CACHE_REGISTRY:
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   193
            cache = CACHE_REGISTRY[cachename]
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   194
        else:
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   195
            cache = CACHE_REGISTRY[cachename] = Cache()
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   196
        _now = datetime.now()
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   197
        if _now > cache.latest_cache_lookup + ONESECOND:
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   198
            ecache = self.execute(
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   199
                'Any C,T WHERE C is CWCache, C name %(name)s, C timestamp T',
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   200
                {'name':cachename}).get_entity(0,0)
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   201
            cache.latest_cache_lookup = _now
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   202
            if not ecache.valid(cache.cache_creation_date):
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   203
                cache.clear()
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                cache.cache_creation_date = _now
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        return cache
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    # url generation methods ##################################################
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    def build_url(self, *args, **kwargs):
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        """return an absolute URL using params dictionary key/values as URL
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        parameters. Values are automatically URL quoted, and the
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        publishing method to use may be specified or will be guessed.
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        """
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        # use *args since we don't want first argument to be "anonymous" to
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        # avoid potential clash with kwargs
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        if args:
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            assert len(args) == 1, 'only 0 or 1 non-named-argument expected'
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            method = args[0]
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        else:
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            method = None
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        # XXX I (adim) think that if method is passed explicitly, we should
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        #     not try to process it and directly call req.build_url()
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        if method is None:
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            if self.from_controller() == 'view' and not '_restpath' in kwargs:
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                method = self.relative_path(includeparams=False) or 'view'
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   226
            else:
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                method = 'view'
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        base_url = kwargs.pop('base_url', None)
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        if base_url is None:
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            base_url = self.base_url()
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        if '_restpath' in kwargs:
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            assert method == 'view', method
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            path = kwargs.pop('_restpath')
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        else:
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            path = method
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        if not kwargs:
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            return u'%s%s' % (base_url, path)
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        return u'%s%s?%s' % (base_url, path, self.build_url_params(**kwargs))
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   240
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   241
    def build_url_params(self, **kwargs):
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        """return encoded params to incorporate them in an URL"""
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        args = []
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        for param, values in kwargs.iteritems():
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            if not isinstance(values, (list, tuple)):
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                values = (values,)
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            for value in values:
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                args.append(u'%s=%s' % (param, self.url_quote(value)))
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        return '&'.join(args)
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   251
    def url_quote(self, value, safe=''):
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        """urllib.quote is not unicode safe, use this method to do the
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   253
        necessary encoding / decoding. Also it's designed to quote each
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        part of a url path and so the '/' character will be encoded as well.
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   255
        """
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   256
        if isinstance(value, unicode):
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            quoted = urlquote(value.encode(self.encoding), safe=safe)
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            return unicode(quoted, self.encoding)
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   259
        return urlquote(str(value), safe=safe)
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   260
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   261
    def url_unquote(self, quoted):
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   262
        """returns a unicode unquoted string
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   263
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   264
        decoding is based on `self.encoding` which is the encoding
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   265
        used in `url_quote`
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   266
        """
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   267
        if isinstance(quoted, unicode):
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   268
            quoted = quoted.encode(self.encoding)
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   269
        try:
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   270
            return unicode(urlunquote(quoted), self.encoding)
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   271
        except UnicodeDecodeError: # might occurs on manually typed URLs
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   272
            return unicode(urlunquote(quoted), 'iso-8859-1')
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   273
4300
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   274
    def url_parse_qsl(self, querystring):
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   275
        """return a list of (key, val) found in the url quoted query string"""
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   276
        if isinstance(querystring, unicode):
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   277
            querystring = querystring.encode(self.encoding)
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   278
        for key, val in parse_qsl(querystring):
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diff changeset
   279
            try:
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   280
                yield unicode(key, self.encoding), unicode(val, self.encoding)
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   281
            except UnicodeDecodeError: # might occurs on manually typed URLs
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   282
                yield unicode(key, 'iso-8859-1'), unicode(val, 'iso-8859-1')
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   283
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   284
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   285
    def rebuild_url(self, url, **newparams):
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   286
        """return the given url with newparams inserted. If any new params
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   287
        is already specified in the url, it's overriden by the new value
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   288
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   289
        newparams may only be mono-valued.
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   290
        """
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diff changeset
   291
        if isinstance(url, unicode):
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   292
            url = url.encode(self.encoding)
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   293
        schema, netloc, path, query, fragment = urlsplit(url)
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   294
        query = parse_qs(query)
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   295
        # sort for testing predictability
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diff changeset
   296
        for key, val in sorted(newparams.iteritems()):
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   297
            query[key] = (self.url_quote(val),)
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   298
        query = '&'.join(u'%s=%s' % (param, value)
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   299
                         for param, values in query.items()
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   300
                         for value in values)
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   301
        return urlunsplit((schema, netloc, path, query, fragment))
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   302
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parents:
diff changeset
   303
    # bound user related methods ###############################################
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   304
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   305
    @cached
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
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parents:
diff changeset
   306
    def user_data(self):
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   307
        """returns a dictionnary with this user's information"""
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   308
        userinfo = {}
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   309
        if self.is_internal_session:
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   310
            userinfo['login'] = "cubicweb"
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   311
            userinfo['name'] = "cubicweb"
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   312
            userinfo['email'] = ""
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   313
            return userinfo
4835
13b0b96d7982 [repo] enhanced security handling: deprecates unsafe_execute, in favor of explicit read/write security control using the `enabled_security` context manager. Also code executed on the repository side is now unsafe by default.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4466
diff changeset
   314
        user = self.user
2792
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   315
        userinfo['login'] = user.login
3163
edfe43ceaa35 backport 3.5
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2968
diff changeset
   316
        userinfo['name'] = user.name()
edfe43ceaa35 backport 3.5
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2968
diff changeset
   317
        userinfo['email'] = user.get_email()
2792
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   318
        return userinfo
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   319
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   320
    def is_internal_session(self):
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   321
        """overrided on the server-side"""
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   322
        return False
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   323
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   324
    # formating methods #######################################################
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   325
2823
a4e3e9b1a9cd backported from appobject
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2808
diff changeset
   326
    def view(self, __vid, rset=None, __fallback_oid=None, __registry='views',
4070
6e9f7abee4ef fix initargs handling
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 3720
diff changeset
   327
             initargs=None, **kwargs):
6e9f7abee4ef fix initargs handling
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 3720
diff changeset
   328
        """Select object with the given id (`__oid`) then render it.  If the
6e9f7abee4ef fix initargs handling
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 3720
diff changeset
   329
        object isn't selectable, try to select fallback object if
6e9f7abee4ef fix initargs handling
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 3720
diff changeset
   330
        `__fallback_oid` is specified.
6e9f7abee4ef fix initargs handling
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 3720
diff changeset
   331
6e9f7abee4ef fix initargs handling
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 3720
diff changeset
   332
        If specified `initargs` is expected to be a dictionnary containing
6e9f7abee4ef fix initargs handling
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 3720
diff changeset
   333
        arguments that should be given to selection (hence to object's __init__
6e9f7abee4ef fix initargs handling
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 3720
diff changeset
   334
        as well), but not to render(). Other arbitrary keyword arguments will be
6e9f7abee4ef fix initargs handling
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 3720
diff changeset
   335
        given to selection *and* to render(), and so should be handled by
6e9f7abee4ef fix initargs handling
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 3720
diff changeset
   336
        object's call or cell_call method..
6e9f7abee4ef fix initargs handling
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 3720
diff changeset
   337
        """
6e9f7abee4ef fix initargs handling
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 3720
diff changeset
   338
        if initargs is None:
6e9f7abee4ef fix initargs handling
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 3720
diff changeset
   339
            initargs = kwargs
6e9f7abee4ef fix initargs handling
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 3720
diff changeset
   340
        else:
6e9f7abee4ef fix initargs handling
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 3720
diff changeset
   341
            initargs.update(kwargs)
3655
af86ab65a282 3.6 updates
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3629
diff changeset
   342
        try:
4070
6e9f7abee4ef fix initargs handling
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 3720
diff changeset
   343
            view =  self.vreg[__registry].select(__vid, self, rset=rset, **initargs)
3655
af86ab65a282 3.6 updates
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3629
diff changeset
   344
        except RegistryException:
af86ab65a282 3.6 updates
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3629
diff changeset
   345
            view =  self.vreg[__registry].select(__fallback_oid, self,
4070
6e9f7abee4ef fix initargs handling
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 3720
diff changeset
   346
                                                 rset=rset, **initargs)
3655
af86ab65a282 3.6 updates
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3629
diff changeset
   347
        return view.render(**kwargs)
2823
a4e3e9b1a9cd backported from appobject
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2808
diff changeset
   348
2792
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   349
    def format_date(self, date, date_format=None, time=False):
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   350
        """return a string for a date time according to instance's
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   351
        configuration
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   352
        """
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   353
        if date:
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   354
            if date_format is None:
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   355
                if time:
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   356
                    date_format = self.property_value('ui.datetime-format')
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   357
                else:
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   358
                    date_format = self.property_value('ui.date-format')
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   359
            return ustrftime(date, date_format)
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   360
        return u''
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   361
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   362
    def format_time(self, time):
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   363
        """return a string for a time according to instance's
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   364
        configuration
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   365
        """
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   366
        if time:
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   367
            return ustrftime(time, self.property_value('ui.time-format'))
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   368
        return u''
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   369
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   370
    def format_float(self, num):
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   371
        """return a string for floating point number according to instance's
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   372
        configuration
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   373
        """
4459
f628abfb3a6c backport stable
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4307
diff changeset
   374
        if num is not None:
2792
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   375
            return self.property_value('ui.float-format') % num
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   376
        return u''
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   377
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   378
    def parse_datetime(self, value, etype='Datetime'):
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   379
        """get a datetime or time from a string (according to etype)
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   380
        Datetime formatted as Date are accepted
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   381
        """
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   382
        assert etype in ('Datetime', 'Date', 'Time'), etype
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   383
        # XXX raise proper validation error
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   384
        if etype == 'Datetime':
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   385
            format = self.property_value('ui.datetime-format')
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   386
            try:
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   387
                return todatetime(strptime(value, format))
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   388
            except ValueError:
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   389
                pass
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   390
        elif etype == 'Time':
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   391
            format = self.property_value('ui.time-format')
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   392
            try:
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   393
                # (adim) I can't find a way to parse a Time with a custom format
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   394
                date = strptime(value, format) # this returns a DateTime
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   395
                return time(date.hour, date.minute, date.second)
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   396
            except ValueError:
4222
5667f493c505 return localized message on parse_datetime errors
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4070
diff changeset
   397
                raise ValueError(self._('can\'t parse %(value)r (expected %(format)s)')
5667f493c505 return localized message on parse_datetime errors
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4070
diff changeset
   398
                                 % {'value': value, 'format': format})
2792
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   399
        try:
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   400
            format = self.property_value('ui.date-format')
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   401
            dt = strptime(value, format)
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   402
            if etype == 'Datetime':
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   403
                return todatetime(dt)
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   404
            return todate(dt)
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   405
        except ValueError:
4222
5667f493c505 return localized message on parse_datetime errors
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4070
diff changeset
   406
            raise ValueError(self._('can\'t parse %(value)r (expected %(format)s)')
5667f493c505 return localized message on parse_datetime errors
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4070
diff changeset
   407
                             % {'value': value, 'format': format})
2792
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   408
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   409
    # abstract methods to override according to the web front-end #############
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   410
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   411
    def base_url(self):
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   412
        """return the root url of the instance"""
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   413
        raise NotImplementedError
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   414
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   415
    def describe(self, eid):
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   416
        """return a tuple (type, sourceuri, extid) for the entity with id <eid>"""
135580d15d42 rename and move cw.RequestSessionMixIn to cw.req.RequestSessionBase; move some appobjects methods where they actually belong to
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   417
        raise NotImplementedError
3659
993997b4b41d 3.6 update
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3655
diff changeset
   418
993997b4b41d 3.6 update
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3655
diff changeset
   419
    @property
993997b4b41d 3.6 update
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3655
diff changeset
   420
    @deprecated('[3.6] use _cw.vreg.config')
993997b4b41d 3.6 update
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3655
diff changeset
   421
    def config(self):
993997b4b41d 3.6 update
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3655
diff changeset
   422
        return self.vreg.config
993997b4b41d 3.6 update
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3655
diff changeset
   423
993997b4b41d 3.6 update
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3655
diff changeset
   424
    @property
993997b4b41d 3.6 update
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3655
diff changeset
   425
    @deprecated('[3.6] use _cw.vreg.schema')
993997b4b41d 3.6 update
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3655
diff changeset
   426
    def schema(self):
993997b4b41d 3.6 update
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3655
diff changeset
   427
        return self.vreg.schema