author | Julien Cristau <julien.cristau@logilab.fr> |
Fri, 27 Mar 2015 16:37:26 +0100 | |
changeset 10288 | 848b7ca9636e |
parent 10095 | 200bd6a601dc |
child 10251 | 2daa5c6dea4d |
child 10396 | 33e44293b0eb |
permissions | -rw-r--r-- |
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# copyright 2003-2013 LOGILAB S.A. (Paris, FRANCE), all rights reserved. |
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# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr |
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# |
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# This file is part of CubicWeb. |
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# |
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proper licensing information (LGPL-2.1). Hope I get it right this time.
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# CubicWeb is free software: you can redistribute it and/or modify it under the |
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# terms of the GNU Lesser General Public License as published by the Free |
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# Software Foundation, either version 2.1 of the License, or (at your option) |
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# any later version. |
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# |
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# CubicWeb is distributed in the hope that it will be useful, but WITHOUT |
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
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# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more |
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# details. |
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# |
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# You should have received a copy of the GNU Lesser General Public License along |
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# with CubicWeb. If not, see <http://www.gnu.org/licenses/>. |
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"""base application's entities class implementation: `AnyEntity`""" |
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__docformat__ = "restructuredtext en" |
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from logilab.common.decorators import classproperty |
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from cubicweb import Unauthorized |
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from cubicweb.entity import Entity |
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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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@classproperty |
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def cw_etype(cls): |
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"""entity type as a unicode string""" |
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return unicode(cls.__regid__) |
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[view] deprecate create_url in favor of a cw_create_url class method on entity classes
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@classmethod |
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def cw_create_url(cls, req, **kwargs): |
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""" return the url of the entity creation form for this entity type""" |
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return req.build_url('add/%s' % cls.__regid__, **kwargs) |
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@classmethod |
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def cw_fti_index_rql_queries(cls, req): |
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"""return the list of rql queries to fetch entities to FT-index |
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The default is to fetch all entities at once and to prefetch |
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indexable attributes but one could imagine iterating over |
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"smaller" resultsets if the table is very big or returning |
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a subset of entities that match some business-logic condition. |
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""" |
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restrictions = ['X is %s' % cls.__regid__] |
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selected = ['X'] |
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for attrschema in cls.e_schema.indexable_attributes(): |
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varname = attrschema.type.upper() |
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restrictions.append('X %s %s' % (attrschema, varname)) |
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selected.append(varname) |
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return ['Any %s WHERE %s' % (', '.join(selected), |
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', '.join(restrictions))] |
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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.cw_attr_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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# 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.cw_attr_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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def fetch_config(fetchattrs, mainattr=None, pclass=AnyEntity, order='ASC'): |
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"""function to ease basic configuration of an entity class ORM. Basic usage |
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is: |
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.. sourcecode:: python |
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|
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class MyEntity(AnyEntity): |
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fetch_attrs, cw_fetch_order = fetch_config(['attr1', 'attr2']) |
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# uncomment line below if you want the same sorting for 'unrelated' entities |
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# cw_fetch_unrelated_order = cw_fetch_order |
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|
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Using this, when using ORM methods retrieving this type of entity, 'attr1' |
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and 'attr2' will be automatically prefetched and results will be sorted on |
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[entity] upgrade fetch_[unrelated_]order to benefit from changes introduced in 3.14 (closes #1942758)
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'attr1' ascending (ie the first attribute in the list). |
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[entity] upgrade fetch_[unrelated_]order to benefit from changes introduced in 3.14 (closes #1942758)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
7143
diff
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157 |
|
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[entity] upgrade fetch_[unrelated_]order to benefit from changes introduced in 3.14 (closes #1942758)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
7143
diff
changeset
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158 |
This function will automatically add to fetched attributes those defined in |
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[entity] upgrade fetch_[unrelated_]order to benefit from changes introduced in 3.14 (closes #1942758)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
7143
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parent class given using the `pclass` argument. |
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[entity] upgrade fetch_[unrelated_]order to benefit from changes introduced in 3.14 (closes #1942758)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
7143
diff
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160 |
|
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[entity] upgrade fetch_[unrelated_]order to benefit from changes introduced in 3.14 (closes #1942758)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
7143
diff
changeset
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161 |
Also, You can use `mainattr` and `order` argument to have a different |
9bbf83f68bcc
[entity] upgrade fetch_[unrelated_]order to benefit from changes introduced in 3.14 (closes #1942758)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
7143
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162 |
sorting. |
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[entity] upgrade fetch_[unrelated_]order to benefit from changes introduced in 3.14 (closes #1942758)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
7143
diff
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""" |
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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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[entity] upgrade fetch_[unrelated_]order to benefit from changes introduced in 3.14 (closes #1942758)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
7143
diff
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def fetch_order(cls, select, attr, var): |
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if attr == mainattr: |
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[entity] upgrade fetch_[unrelated_]order to benefit from changes introduced in 3.14 (closes #1942758)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
7143
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select.add_sort_var(var, order=='ASC') |
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return fetchattrs, fetch_order |