"""Specific views for schema related entities
:organization: Logilab
:copyright: 2001-2010 LOGILAB S.A. (Paris, FRANCE), license is LGPL v2.
:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr
:license: GNU Lesser General Public License, v2.1 - http://www.gnu.org/licenses
"""
__docformat__ = "restructuredtext en"
from itertools import cycle
from logilab.mtconverter import xml_escape
from yams import BASE_TYPES, schema2dot as s2d
from yams.buildobjs import DEFAULT_ATTRPERMS
from cubicweb.selectors import (implements, yes, match_user_groups,
has_related_entities)
from cubicweb.schema import (META_RTYPES, SCHEMA_TYPES, SYSTEM_RTYPES,
WORKFLOW_TYPES, INTERNAL_TYPES)
from cubicweb.schemaviewer import SchemaViewer
from cubicweb.view import EntityView, StartupView
from cubicweb import tags, uilib
from cubicweb.web import action, facet, uicfg
from cubicweb.web.views import TmpFileViewMixin
from cubicweb.web.views import primary, baseviews, tabs, management
ALWAYS_SKIP_TYPES = BASE_TYPES | SCHEMA_TYPES
SKIP_TYPES = (ALWAYS_SKIP_TYPES | META_RTYPES | SYSTEM_RTYPES | WORKFLOW_TYPES
| INTERNAL_TYPES)
SKIP_TYPES.update(set(('CWUser', 'CWGroup')))
def skip_types(req):
if int(req.form.get('skipmeta', True)):
return SKIP_TYPES
return ALWAYS_SKIP_TYPES
_pvs = uicfg.primaryview_section
for _action in ('read', 'add', 'update', 'delete'):
_pvs.tag_subject_of(('*', '%s_permission' % _action, '*'), 'hidden')
_pvs.tag_object_of(('*', '%s_permission' % _action, '*'), 'hidden')
# global schema view ###########################################################
class SchemaView(tabs.TabsMixin, StartupView):
__regid__ = 'schema'
title = _('instance schema')
tabs = [_('schema-text'), _('schema-image'), _('schema-security')]
default_tab = 'schema-text'
def call(self):
"""display schema information"""
self._cw.add_js('cubicweb.ajax.js')
self._cw.add_css(('cubicweb.schema.css','cubicweb.acl.css'))
self.w(u'<h1>%s</h1>' % _('Schema of the data model'))
self.render_tabs(self.tabs, self.default_tab)
class SchemaTabImageView(StartupView):
__regid__ = 'schema-image'
def call(self):
self.w(_(u'<div>This schema of the data model <em>excludes</em> the '
u'meta-data, but you can also display a <a href="%s">complete '
u'schema with meta-data</a>.</div>')
% xml_escape(self._cw.build_url('view', vid='schemagraph', skipmeta=0)))
self.w(u'<img src="%s" alt="%s"/>\n' % (
xml_escape(self._cw.build_url('view', vid='schemagraph', skipmeta=1)),
self._cw._("graphical representation of the instance'schema")))
class SchemaTabTextView(StartupView):
__regid__ = 'schema-text'
def call(self):
rset = self._cw.execute('Any X ORDERBY N WHERE X is CWEType, X name N, '
'X final FALSE')
self.wview('table', rset, displayfilter=True)
rset = self._cw.execute('Any X ORDERBY N WHERE X is CWRType, X name N, '
'X final FALSE')
self.wview('table', rset, displayfilter=True)
owl_downloadurl = self._cw.build_url('view', vid='owl')
self.w(u'<div><a href="%s">%s</a></div>' %
(owl_downloadurl, self._cw._(u'Download schema as OWL')))
class SchemaPermissionsView(StartupView, management.SecurityViewMixIn):
__regid__ = 'schema-security'
__select__ = StartupView.__select__ & match_user_groups('managers')
def call(self, display_relations=True):
self._cw.add_css('cubicweb.acl.css')
skiptypes = skip_types(self._cw)
schema = self._cw.vreg.schema
# compute entities
entities = sorted(eschema for eschema in schema.entities()
if not (eschema.final or eschema in skiptypes))
# compute relations
if display_relations:
relations = sorted(rschema for rschema in schema.relations()
if not (rschema.final
or rschema in skiptypes
or rschema in META_RTYPES))
else:
relations = []
# index
_ = self._cw._
url = xml_escape(self._cw.build_url('schema'))
self.w(u'<div id="schema_security">')
self.w(u'<h2 class="schema">%s</h2>' % _('Index'))
self.w(u'<h4 id="entities">%s</h4>' % _('Entity types'))
ents = []
for eschema in sorted(entities):
ents.append(u'<a class="grey" href="%s#%s">%s</a>' % (
url, eschema.type, eschema.type))
self.w(u', '.join(ents))
self.w(u'<h4 id="relations">%s</h4>' % _('Relation types'))
rels = []
for rschema in sorted(relations):
rels.append(u'<a class="grey" href="%s#%s">%s</a>' % (
url , rschema.type, rschema.type))
self.w(u', '.join(rels))
# permissions tables
self.display_entities(entities)
if relations:
self.display_relations(relations)
self.w(u'</div>')
def has_non_default_perms(self, rdef):
for access_type in rdef.ACTIONS:
def_rqlexprs = []
def_groups = []
for perm in DEFAULT_ATTRPERMS[access_type]:
if not isinstance(perm, basestring):
def_rqlexprs.append(perm.expression)
else:
def_groups.append(perm)
rqlexprs = [rql.expression for rql in rdef.get_rqlexprs(access_type)]
groups = rdef.get_groups(access_type)
if groups != frozenset(def_groups) or \
frozenset(rqlexprs) != frozenset(def_rqlexprs):
return True
return False
def display_entities(self, entities):
_ = self._cw._
url = xml_escape(self._cw.build_url('schema'))
self.w(u'<h2 id="entities" class="schema">%s</h2>' % _('Permissions for entity types'))
for eschema in entities:
self.w(u'<h3 id="%s" class="schema"><a href="%s">%s (%s)</a> ' % (
eschema.type, self._cw.build_url('cwetype/%s' % eschema.type),
eschema.type, _(eschema.type)))
self.w(u'<a href="%s#schema_security"><img src="%s" alt="%s"/></a>' % (
url, self._cw.external_resource('UP_ICON'), _('up')))
self.w(u'</h3>')
self.w(u'<div style="margin: 0px 1.5em">')
self.schema_definition(eschema)
# display entity attributes only if they have some permissions modified
modified_attrs = []
for attr, etype in eschema.attribute_definitions():
rdef = eschema.rdef(attr)
if attr not in META_RTYPES and self.has_non_default_perms(rdef):
modified_attrs.append(rdef)
if modified_attrs:
self.w(u'<h4>%s</h4>' % _('Attributes with non default permissions:'))
self.w(u'</div>')
self.w(u'<div style="margin: 0px 6em">')
for rdef in modified_attrs:
attrtype = str(rdef.rtype)
self.w(u'<h4 class="schema">%s (%s)</h4> ' % (attrtype, _(attrtype)))
self.schema_definition(rdef)
self.w(u'</div>')
def display_relations(self, relations):
_ = self._cw._
url = xml_escape(self._cw.build_url('schema'))
self.w(u'<h2 id="relations" class="schema">%s</h2>' % _('Permissions for relations'))
for rschema in relations:
self.w(u'<h3 id="%s" class="schema"><a href="%s">%s (%s)</a> ' % (
rschema.type, self._cw.build_url('cwrtype/%s' % rschema.type),
rschema.type, _(rschema.type)))
self.w(u'<a href="%s#schema_security"><img src="%s" alt="%s"/></a>' % (
url, self._cw.external_resource('UP_ICON'), _('up')))
self.w(u'</h3>')
self.w(u'<div style="margin: 0px 1.5em">')
for rdef in rschema.rdefs.itervalues():
self.w(u'<h4 class="schema">%s %s %s</h4>' % (
rdef.subject, rschema, rdef.object))
self.schema_definition(rdef)
self.w(u'</div>')
class SchemaUreportsView(StartupView):
__regid__ = 'schema-block'
def call(self):
viewer = SchemaViewer(self._cw)
layout = viewer.visit_schema(self._cw.vreg.schema, display_relations=True,
skiptypes=skip_types(self._cw))
self.w(uilib.ureport_as_html(layout))
# CWAttribute / CWRelation #####################################################
class CWRDEFPrimaryView(primary.PrimaryView):
__select__ = implements('CWAttribute', 'CWRelation')
cache_max_age = 60*60*2 # stay in http cache for 2 hours by default
def render_entity_title(self, entity):
self.w(u'<h1><span class="etype">%s</span> %s</h1>'
% (entity.dc_type().capitalize(),
xml_escape(entity.dc_long_title())))
# CWEType ######################################################################
class CWETypeOneLineView(baseviews.OneLineView):
__select__ = implements('CWEType')
def cell_call(self, row, col, **kwargs):
entity = self.cw_rset.get_entity(row, col)
final = entity.final
if final:
self.w(u'<em class="finalentity">')
super(CWETypeOneLineView, self).cell_call(row, col, **kwargs)
if final:
self.w(u'</em>')
class CWETypePrimaryView(tabs.TabsMixin, primary.PrimaryView):
__select__ = implements('CWEType')
title = _('in memory entity schema')
main_related_section = False
tabs = [_('cwetype-schema-text'), _('cwetype-schema-image'),
_('cwetype-schema-permissions'), _('cwetype-workflow')]
default_tab = 'cwetype-schema-text'
def render_entity(self, entity):
self.render_entity_title(entity)
self.w(u'<div>%s</div>' % entity.description)
self.render_tabs(self.tabs, self.default_tab, entity)
class CWETypeSTextView(EntityView):
__regid__ = 'cwetype-schema-text'
__select__ = EntityView.__select__ & implements('CWEType')
def cell_call(self, row, col):
entity = self.cw_rset.get_entity(row, col)
self.w(u'<h2>%s</h2>' % _('Attributes'))
rset = self._cw.execute('Any N,F,D,I,J,DE,A '
'ORDERBY AA WHERE A is CWAttribute, '
'A ordernum AA, A defaultval D, '
'A description DE, '
'A fulltextindexed I, A internationalizable J, '
'A relation_type R, R name N, '
'A to_entity O, O name F, '
'A from_entity S, S eid %(x)s',
{'x': entity.eid})
self.wview('editable-table', rset, 'null', displayfilter=True)
self.w(u'<h2>%s</h2>' % _('Relations'))
rset = self._cw.execute(
'Any R,C,TT,K,D,A,RN,TTN ORDERBY RN '
'WHERE A is CWRelation, A description D, A composite K, '
'A relation_type R, R name RN, A to_entity TT, TT name TTN, '
'A cardinality C, A from_entity S, S eid %(x)s',
{'x': entity.eid})
self.wview('editable-table', rset, 'null', displayfilter=True,
displaycols=range(6), mainindex=5)
rset = self._cw.execute(
'Any R,C,TT,K,D,A,RN,TTN ORDERBY RN '
'WHERE A is CWRelation, A description D, A composite K, '
'A relation_type R, R name RN, A from_entity TT, TT name TTN, '
'A cardinality C, A to_entity O, O eid %(x)s',
{'x': entity.eid})
self.wview('editable-table', rset, 'null', displayfilter=True,
displaycols=range(6), mainindex=5)
class CWETypeSImageView(EntityView):
__regid__ = 'cwetype-schema-image'
__select__ = EntityView.__select__ & implements('CWEType')
def cell_call(self, row, col):
entity = self.cw_rset.get_entity(row, col)
url = entity.absolute_url(vid='schemagraph')
self.w(u'<img src="%s" alt="%s"/>' % (
xml_escape(url),
xml_escape(self._cw._('graphical schema for %s') % entity.name)))
class CWETypeSPermView(EntityView):
__regid__ = 'cwetype-schema-permissions'
__select__ = EntityView.__select__ & implements('CWEType')
def cell_call(self, row, col):
entity = self.cw_rset.get_entity(row, col)
_ = self._cw._
self.w(u'<h2>%s</h2>' % _('Add permissions'))
rset = self._cw.execute('Any P WHERE X add_permission P, '
'X eid %(x)s',
{'x': entity.eid})
self.wview('outofcontext', rset, 'null')
self.w(u'<h2>%s</h2>' % _('Read permissions'))
rset = self._cw.execute('Any P WHERE X read_permission P, '
'X eid %(x)s',
{'x': entity.eid})
self.wview('outofcontext', rset, 'null')
self.w(u'<h2>%s</h2>' % _('Update permissions'))
rset = self._cw.execute('Any P WHERE X update_permission P, '
'X eid %(x)s',
{'x': entity.eid})
self.wview('outofcontext', rset, 'null')
self.w(u'<h2>%s</h2>' % _('Delete permissions'))
rset = self._cw.execute('Any P WHERE X delete_permission P, '
'X eid %(x)s',
{'x': entity.eid})
self.wview('outofcontext', rset, 'null')
class CWETypeSWorkflowView(EntityView):
__regid__ = 'cwetype-workflow'
__select__ = (EntityView.__select__ & implements('CWEType') &
has_related_entities('workflow_of', 'object'))
def cell_call(self, row, col):
entity = self.cw_rset.get_entity(row, col)
if entity.default_workflow:
wf = entity.default_workflow[0]
if len(entity.reverse_workflow_of) > 1:
self.w(u'<h1>%s (%s)</h1>'
% (wf.name, self._cw._('default_workflow')))
self.display_workflow(wf)
defaultwfeid = wf.eid
else:
self.w(u'<div class="error">%s</div>'
% self._cw._('There is no default workflow'))
defaultwfeid = None
for altwf in entity.reverse_workflow_of:
if altwf.eid == defaultwfeid:
continue
self.w(u'<h1>%s</h1>' % altwf.name)
self.display_workflow(altwf)
def display_workflow(self, wf):
self.w(wf.view('wfgraph'))
self.w('<a href="%s">%s</a>' % (
wf.absolute_url(), self._cw._('more info about this workflow')))
# CWRType ######################################################################
class CWRTypeSchemaView(primary.PrimaryView):
__select__ = implements('CWRType')
title = _('in memory relation schema')
main_related_section = False
def render_entity_attributes(self, entity):
super(CWRTypeSchemaView, self).render_entity_attributes(entity)
rschema = self._cw.vreg.schema.rschema(entity.name)
viewer = SchemaViewer(self._cw)
layout = viewer.visit_relationschema(rschema, title=False)
self.w(uilib.ureport_as_html(layout))
if not rschema.final:
msg = self._cw._('graphical schema for %s') % entity.name
self.w(tags.img(src=entity.absolute_url(vid='schemagraph'),
alt=msg))
# schema images ###############################################################
class RestrictedSchemaVisitorMixIn(object):
def __init__(self, req, *args, **kwargs):
self._cw = req
super(RestrictedSchemaVisitorMixIn, self).__init__(*args, **kwargs)
def should_display_schema(self, rschema):
return (super(RestrictedSchemaVisitorMixIn, self).should_display_schema(rschema)
and rschema.may_have_permission('read', self._cw))
def should_display_attr(self, eschema, rschema):
return (super(RestrictedSchemaVisitorMixIn, self).should_display_attr(eschema, rschema)
and eschema.rdef(rschema).may_have_permission('read', self._cw))
class FullSchemaVisitor(RestrictedSchemaVisitorMixIn, s2d.FullSchemaVisitor):
pass
class OneHopESchemaVisitor(RestrictedSchemaVisitorMixIn,
s2d.OneHopESchemaVisitor):
pass
class OneHopRSchemaVisitor(RestrictedSchemaVisitorMixIn,
s2d.OneHopRSchemaVisitor):
pass
class SchemaImageView(TmpFileViewMixin, StartupView):
__regid__ = 'schemagraph'
content_type = 'image/png'
def _generate(self, tmpfile):
"""display global schema information"""
visitor = FullSchemaVisitor(self._cw, self._cw.vreg.schema,
skiptypes=skip_types(self._cw))
s2d.schema2dot(outputfile=tmpfile, visitor=visitor)
class CWETypeSchemaImageView(TmpFileViewMixin, EntityView):
__regid__ = 'schemagraph'
__select__ = implements('CWEType')
content_type = 'image/png'
def _generate(self, tmpfile):
"""display schema information for an entity"""
entity = self.cw_rset.get_entity(self.cw_row, self.cw_col)
eschema = self._cw.vreg.schema.eschema(entity.name)
visitor = OneHopESchemaVisitor(self._cw, eschema,
skiptypes=skip_types(self._cw))
s2d.schema2dot(outputfile=tmpfile, visitor=visitor)
class CWRTypeSchemaImageView(CWETypeSchemaImageView):
__select__ = implements('CWRType')
def _generate(self, tmpfile):
"""display schema information for an entity"""
entity = self.cw_rset.get_entity(self.cw_row, self.cw_col)
rschema = self._cw.vreg.schema.rschema(entity.name)
visitor = OneHopRSchemaVisitor(self._cw, rschema)
s2d.schema2dot(outputfile=tmpfile, visitor=visitor)
# misc: facets, actions ########################################################
class CWFinalFacet(facet.AttributeFacet):
__regid__ = 'cwfinal-facet'
__select__ = facet.AttributeFacet.__select__ & implements('CWEType', 'CWRType')
rtype = 'final'
class ViewSchemaAction(action.Action):
__regid__ = 'schema'
__select__ = yes()
title = _("site schema")
category = 'siteactions'
order = 30
def url(self):
return self._cw.build_url(self.__regid__)