author | Sylvain Thénault <sylvain.thenault@logilab.fr> |
Thu, 13 Aug 2009 10:57:57 +0200 | |
changeset 2808 | 497424219fb0 |
parent 2793 | bfb21f7a0d13 |
child 2819 | b864288fd316 |
permissions | -rw-r--r-- |
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"""base application's entities class implementation: `AnyEntity` |
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:organization: Logilab |
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:copyright: 2001-2009 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: GNU Lesser General Public License, v2.1 - 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 logilab.common.deprecation import deprecated |
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from logilab.common.decorators import cached |
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from cubicweb import Unauthorized, typed_eid |
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from cubicweb.entity import Entity |
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from cubicweb.interfaces import IBreadCrumbs, IFeed |
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class AnyEntity(Entity): |
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"""an entity instance has e_schema automagically set on the class and |
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instances have access to their issuing cursor |
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""" |
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id = 'Any' |
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__implements__ = (IBreadCrumbs, IFeed) |
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fetch_attrs = ('modification_date',) |
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@classmethod |
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def fetch_order(cls, attr, var): |
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"""class method used to control sort order when multiple entities of |
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this type are fetched |
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""" |
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return cls.fetch_unrelated_order(attr, var) |
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@classmethod |
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def fetch_unrelated_order(cls, attr, var): |
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"""class method used to control sort order when multiple entities of |
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this type are fetched to use in edition (eg propose them to create a |
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new relation on an edited entity). |
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""" |
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if attr == 'modification_date': |
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return '%s DESC' % var |
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return None |
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# meta data api ########################################################### |
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def dc_title(self): |
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"""return a suitable *unicode* title for this entity""" |
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for rschema, attrschema in self.e_schema.attribute_definitions(): |
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if rschema.meta: |
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continue |
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value = self.get_value(rschema.type) |
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if value: |
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# make the value printable (dates, floats, bytes, etc.) |
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return self.printable_value(rschema.type, value, attrschema.type, |
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format='text/plain') |
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return u'%s #%s' % (self.dc_type(), self.eid) |
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def dc_long_title(self): |
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"""return a more detailled title for this entity""" |
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return self.dc_title() |
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def dc_description(self, format='text/plain'): |
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"""return a suitable description for this entity""" |
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if self.e_schema.has_subject_relation('description'): |
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return self.printable_value('description', format=format) |
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return u'' |
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def dc_authors(self): |
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"""return a suitable description for the author(s) of the entity""" |
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try: |
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return ', '.join(u.name() for u in self.owned_by) |
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except Unauthorized: |
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return u'' |
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def dc_creator(self): |
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"""return a suitable description for the creator of the entity""" |
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if self.creator: |
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return self.creator.name() |
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return u'' |
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def dc_date(self, date_format=None):# XXX default to ISO 8601 ? |
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"""return latest modification date of this entity""" |
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return self.format_date(self.modification_date, date_format=date_format) |
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def dc_type(self, form=''): |
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"""return the display name for the type of this entity (translated)""" |
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return self.e_schema.display_name(self.req, form) |
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def dc_language(self): |
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"""return language used by this entity (translated)""" |
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# check if entities has internationalizable attributes |
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# XXX one is enough or check if all String attributes are internationalizable? |
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for rschema, attrschema in self.e_schema.attribute_definitions(): |
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if rschema.rproperty(self.e_schema, attrschema, |
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'internationalizable'): |
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return self.req._(self.req.user.property_value('ui.language')) |
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return self.req._(self.vreg.property_value('ui.language')) |
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@property |
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def creator(self): |
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"""return the CWUser entity which has created this entity, or None if |
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unknown or if the curent user doesn't has access to this euser |
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""" |
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try: |
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return self.created_by[0] |
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except (Unauthorized, IndexError): |
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return None |
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def breadcrumbs(self, view=None, recurs=False): |
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path = [self] |
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if hasattr(self, 'parent'): |
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parent = self.parent() |
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if parent is not None: |
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try: |
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path = parent.breadcrumbs(view, True) + [self] |
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except TypeError: |
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warn("breadcrumbs method's now takes two arguments " |
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"(view=None, recurs=False), please update", |
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DeprecationWarning) |
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path = parent.breadcrumbs(view) + [self] |
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if not recurs: |
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if view is None: |
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if 'vtitle' in self.req.form: |
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# embeding for instance |
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path.append( self.req.form['vtitle'] ) |
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elif view.id != 'primary' and hasattr(view, 'title'): |
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path.append( self.req._(view.title) ) |
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return path |
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## IFeed interface ######################################################## |
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def rss_feed_url(self): |
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return self.absolute_url(vid='rss') |
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# abstractions making the whole things (well, some at least) working ###### |
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def sortvalue(self, rtype=None): |
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"""return a value which can be used to sort this entity or given |
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entity's attribute |
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""" |
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if rtype is None: |
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return self.dc_title().lower() |
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value = self.get_value(rtype) |
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# do not restrict to `unicode` because Bytes will return a `str` value |
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if isinstance(value, basestring): |
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return self.printable_value(rtype, format='text/plain').lower() |
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return value |
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# edition helper functions ################################################ |
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def linked_to(self, rtype, target, remove=True): |
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"""if entity should be linked to another using __linkto form param for |
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the given relation/target, return eids of related entities |
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This method is consuming matching link-to information from form params |
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if `remove` is True (by default). |
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""" |
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try: |
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return self.__linkto[(rtype, target)] |
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except AttributeError: |
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self.__linkto = {} |
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except KeyError: |
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pass |
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linktos = list(self.req.list_form_param('__linkto')) |
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linkedto = [] |
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for linkto in linktos[:]: |
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ltrtype, eid, lttarget = linkto.split(':') |
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if rtype == ltrtype and target == lttarget: |
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# delete __linkto from form param to avoid it being added as |
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# hidden input |
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if remove: |
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linktos.remove(linkto) |
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self.req.form['__linkto'] = linktos |
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linkedto.append(typed_eid(eid)) |
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self.__linkto[(rtype, target)] = linkedto |
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return linkedto |
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# edit controller callbacks ############################################### |
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def after_deletion_path(self): |
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"""return (path, parameters) which should be used as redirect |
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information when this entity is being deleted |
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""" |
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return str(self.e_schema).lower(), {} |
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def pre_web_edit(self): |
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"""callback called by the web editcontroller when an entity will be |
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created/modified, to let a chance to do some entity specific stuff. |
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|
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Do nothing by default. |
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""" |
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pass |
1493 | 195 |
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# server side helpers ##################################################### |
1493 | 197 |
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def notification_references(self, view): |
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"""used to control References field of email send on notification |
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for this entity. `view` is the notification view. |
1493 | 201 |
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202 |
Should return a list of eids which can be used to generate message ids |
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203 |
of previously sent email |
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204 |
""" |
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205 |
return () |
1493 | 206 |
|
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# XXX deprecates, may be killed once old widgets system is gone ########### |
1493 | 208 |
|
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@classmethod |
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def get_widget(cls, rschema, x='subject'): |
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"""return a widget to view or edit a relation |
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|
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notice that when the relation support multiple target types, the widget |
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is necessarily the same for all those types |
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""" |
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# let ImportError propage if web par isn't available |
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217 |
from cubicweb.web.widgets import widget |
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if isinstance(rschema, basestring): |
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rschema = cls.schema.rschema(rschema) |
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if x == 'subject': |
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tschema = rschema.objects(cls.e_schema)[0] |
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wdg = widget(cls.vreg, cls, rschema, tschema, 'subject') |
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else: |
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tschema = rschema.subjects(cls.e_schema)[0] |
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wdg = widget(cls.vreg, tschema, rschema, cls, 'object') |
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return wdg |
1154 | 227 |
|
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@deprecated('[3.4] use EntityFieldsForm.subject_relation_vocabulary') |
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def subject_relation_vocabulary(self, rtype, limit): |
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form = self.vreg.select('forms', 'edition', self.req, entity=self) |
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return form.subject_relation_vocabulary(rtype, limit) |
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232 |
|
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@deprecated('[3.4] use EntityFieldsForm.object_relation_vocabulary') |
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def object_relation_vocabulary(self, rtype, limit): |
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form = self.vreg.select('forms', 'edition', self.req, entity=self) |
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|
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return form.object_relation_vocabulary(rtype, limit) |
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|
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@deprecated('[3.4] use AutomaticEntityForm.[e]relations_by_category') |
0 | 239 |
def relations_by_category(self, categories=None, permission=None): |
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from cubicweb.web.views.autoform import AutomaticEntityForm |
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return AutomaticEntityForm.erelations_by_category(self, categories, permission) |
0 | 242 |
|
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@deprecated('[3.4] use AutomaticEntityForm.[e]srelations_by_category') |
0 | 244 |
def srelations_by_category(self, categories=None, permission=None): |
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from cubicweb.web.views.autoform import AutomaticEntityForm |
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return AutomaticEntityForm.esrelations_by_category(self, categories, permission) |
1493 | 247 |
|
0 | 248 |
def attribute_values(self, attrname): |
249 |
if self.has_eid() or attrname in self: |
|
250 |
try: |
|
251 |
values = self[attrname] |
|
252 |
except KeyError: |
|
253 |
values = getattr(self, attrname) |
|
254 |
# actual relation return a list of entities |
|
255 |
if isinstance(values, list): |
|
256 |
return [v.eid for v in values] |
|
257 |
return (values,) |
|
258 |
# the entity is being created, try to find default value for |
|
259 |
# this attribute |
|
260 |
try: |
|
261 |
values = self.req.form[attrname] |
|
262 |
except KeyError: |
|
263 |
try: |
|
264 |
values = self[attrname] # copying |
|
265 |
except KeyError: |
|
266 |
values = getattr(self, 'default_%s' % attrname, |
|
267 |
self.e_schema.default(attrname)) |
|
268 |
if callable(values): |
|
269 |
values = values() |
|
270 |
if values is None: |
|
271 |
values = () |
|
272 |
elif not isinstance(values, (list, tuple)): |
|
273 |
values = (values,) |
|
274 |
return values |
|
275 |
||
912 | 276 |
def use_fckeditor(self, attr): |
277 |
"""return True if fckeditor should be used to edit entity's attribute named |
|
278 |
`attr`, according to user preferences |
|
0 | 279 |
""" |
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280 |
if self.req.use_fckeditor() and self.e_schema.has_metadata(attr, 'format'): |
912 | 281 |
if self.has_eid() or '%s_format' % attr in self: |
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282 |
return self.attr_metadata(attr, 'format') == 'text/html' |
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283 |
return self.req.property_value('ui.default-text-format') == 'text/html' |
912 | 284 |
return False |
0 | 285 |
|
286 |
# XXX: store a reference to the AnyEntity class since it is hijacked in goa |
|
287 |
# configuration and we need the actual reference to avoid infinite loops |
|
288 |
# in mro |
|
289 |
ANYENTITY = AnyEntity |
|
290 |
||
291 |
def fetch_config(fetchattrs, mainattr=None, pclass=AnyEntity, order='ASC'): |
|
292 |
if pclass is ANYENTITY: |
|
293 |
pclass = AnyEntity # AnyEntity and ANYENTITY may be different classes |
|
294 |
if pclass is not None: |
|
295 |
fetchattrs += pclass.fetch_attrs |
|
296 |
if mainattr is None: |
|
297 |
mainattr = fetchattrs[0] |
|
298 |
@classmethod |
|
299 |
def fetch_order(cls, attr, var): |
|
300 |
if attr == mainattr: |
|
301 |
return '%s %s' % (var, order) |
|
302 |
return None |
|
303 |
return fetchattrs, fetch_order |