author | Sylvain Thénault <sylvain.thenault@logilab.fr> |
Thu, 11 Mar 2010 16:49:59 +0100 | |
branch | stable |
changeset 4868 | e34cbd85d14d |
parent 4252 | 6c4f109c2b03 |
child 5421 | 8167de96c523 |
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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update copyright: welcome 2010
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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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big bunch of copyright / docstring update
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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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__regid__ = '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 'description' in self.e_schema.subjrels: |
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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._cw.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._cw, 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.rdef(self.e_schema, attrschema).internationalizable: |
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return self._cw._(self._cw.user.property_value('ui.language')) |
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return self._cw._(self._cw.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._cw.form: |
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# embeding for instance |
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path.append( self._cw.form['vtitle'] ) |
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elif view.__regid__ != 'primary' and hasattr(view, 'title'): |
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path.append( self._cw._(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, role, 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/role, 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, role)] |
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except AttributeError: |
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self.__linkto = {} |
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163 |
except KeyError: |
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pass |
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linktos = list(self._cw.list_form_param('__linkto')) |
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linkedto = [] |
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167 |
for linkto in linktos[:]: |
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168 |
ltrtype, eid, ltrole = linkto.split(':') |
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169 |
if rtype == ltrtype and role == ltrole: |
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# delete __linkto from form param to avoid it being added as |
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171 |
# hidden input |
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172 |
if remove: |
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173 |
linktos.remove(linkto) |
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174 |
self._cw.form['__linkto'] = linktos |
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175 |
linkedto.append(typed_eid(eid)) |
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self.__linkto[(rtype, role)] = linkedto |
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177 |
return linkedto |
1493 | 178 |
|
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# edit controller callbacks ############################################### |
1493 | 180 |
|
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def after_deletion_path(self): |
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182 |
"""return (path, parameters) which should be used as redirect |
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183 |
information when this entity is being deleted |
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184 |
""" |
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185 |
if hasattr(self, 'parent') and self.parent(): |
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186 |
return self.parent().rest_path(), {} |
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187 |
return str(self.e_schema).lower(), {} |
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188 |
|
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189 |
def pre_web_edit(self): |
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190 |
"""callback called by the web editcontroller when an entity will be |
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191 |
created/modified, to let a chance to do some entity specific stuff. |
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192 |
|
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193 |
Do nothing by default. |
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194 |
""" |
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195 |
pass |
1493 | 196 |
|
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197 |
# server side helpers ##################################################### |
1493 | 198 |
|
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199 |
def notification_references(self, view): |
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200 |
"""used to control References field of email send on notification |
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201 |
for this entity. `view` is the notification view. |
1493 | 202 |
|
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203 |
Should return a list of eids which can be used to generate message ids |
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204 |
of previously sent email |
c8ff5c7fd0ae
move get_widget in the to-deprecate section
sylvain.thenault@logilab.fr
parents:
1013
diff
changeset
|
205 |
""" |
c8ff5c7fd0ae
move get_widget in the to-deprecate section
sylvain.thenault@logilab.fr
parents:
1013
diff
changeset
|
206 |
return () |
1493 | 207 |
|
0 | 208 |
# XXX: store a reference to the AnyEntity class since it is hijacked in goa |
209 |
# configuration and we need the actual reference to avoid infinite loops |
|
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# in mro |
|
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ANYENTITY = AnyEntity |
|
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||
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def fetch_config(fetchattrs, mainattr=None, pclass=AnyEntity, order='ASC'): |
|
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if pclass is ANYENTITY: |
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pclass = AnyEntity # AnyEntity and ANYENTITY may be different classes |
|
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if pclass is not None: |
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fetchattrs += pclass.fetch_attrs |
|
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if mainattr is None: |
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mainattr = fetchattrs[0] |
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@classmethod |
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def fetch_order(cls, attr, var): |
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if attr == mainattr: |
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return '%s %s' % (var, order) |
|
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return None |
|
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return fetchattrs, fetch_order |