author | Sylvain Thénault <sylvain.thenault@logilab.fr> |
Wed, 09 Dec 2009 17:51:19 +0100 | |
changeset 4091 | 3fc6a53b7a6a |
parent 4073 | 03681ba6da0b |
child 4110 | 8728d8c95985 |
permissions | -rw-r--r-- |
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"""The edit controller, handling form submitting. |
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:organization: Logilab |
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big bunch of copyright / docstring update
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
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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 |
1977
606923dff11b
big bunch of copyright / docstring update
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
1948
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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 decimal import Decimal |
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from rql.utils import rqlvar_maker |
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from cubicweb import Binary, ValidationError, typed_eid |
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from cubicweb.web import INTERNAL_FIELD_VALUE, RequestError, NothingToEdit, ProcessFormError |
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from cubicweb.web.controller import parse_relations_descr |
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from cubicweb.web.views.basecontrollers import ViewController |
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class ToDoLater(Exception): |
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"""exception used in the edit controller to indicate that a relation |
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can't be handled right now and have to be handled later |
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""" |
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class RqlQuery(object): |
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def __init__(self): |
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self.edited = [] |
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self.restrictions = [] |
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self.kwargs = {} |
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def insert_query(self, etype): |
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if self.edited: |
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rql = 'INSERT %s X: %s' % (etype, ','.join(self.edited)) |
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else: |
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rql = 'INSERT %s X' % etype |
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if self.restrictions: |
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rql += ' WHERE %s' % ','.join(self.restrictions) |
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return rql |
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def update_query(self, eid): |
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varmaker = rqlvar_maker() |
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var = varmaker.next() |
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while var in self.kwargs: |
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var = varmaker.next() |
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rql = 'SET %s WHERE X eid %%(%s)s' % (','.join(self.edited), var) |
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if self.restrictions: |
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rql += ', %s' % ','.join(self.restrictions) |
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self.kwargs[var] = eid |
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return rql |
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class EditController(ViewController): |
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__regid__ = 'edit' |
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def publish(self, rset=None): |
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"""edit / create / copy / delete entity / relations""" |
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for key in self._cw.form: |
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# There should be 0 or 1 action |
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if key.startswith('__action_'): |
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cbname = key[1:] |
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try: |
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callback = getattr(self, cbname) |
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except AttributeError: |
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raise RequestError(self._cw._('invalid action %r' % key)) |
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else: |
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return callback() |
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self._default_publish() |
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self.reset() |
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def _default_publish(self): |
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req = self._cw |
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self.errors = [] |
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self.relations_rql = [] |
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form = req.form |
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# so we're able to know the main entity from the repository side |
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if '__maineid' in form: |
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req.set_shared_data('__maineid', form['__maineid'], querydata=True) |
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# no specific action, generic edition |
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self._to_create = req.data['eidmap'] = {} |
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self._pending_relations = [] |
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todelete = self._cw.get_pending_deletes() |
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toinsert = self._cw.get_pending_inserts() |
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try: |
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methodname = req.form.pop('__method', None) |
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for eid in req.edited_eids(): |
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# __type and eid |
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formparams = req.extract_entity_params(eid, minparams=2) |
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if methodname is not None: |
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entity = req.entity_from_eid(eid) |
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method = getattr(entity, methodname) |
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method(formparams) |
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eid = self.edit_entity(formparams) |
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except (RequestError, NothingToEdit): |
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if '__linkto' in req.form and 'eid' in req.form: |
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self.execute_linkto() |
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elif not ('__delete' in req.form or '__insert' in req.form or todelete or toinsert): |
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raise ValidationError(None, {None: req._('nothing to edit')}) |
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for querydef in self.relations_rql: |
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self._cw.execute(*querydef) |
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# handle relations in newly created entities |
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# XXX find a way to merge _pending_relations and relations_rql |
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if self._pending_relations: |
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for form, field, entity in self._pending_relations: |
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for querydef in self.handle_relation(form, field, entity, True): |
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self._cw.execute(*querydef) |
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# XXX this processes *all* pending operations of *all* entities |
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if req.form.has_key('__delete'): |
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todelete += req.list_form_param('__delete', req.form, pop=True) |
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if todelete: |
109 |
self.delete_relations(parse_relations_descr(todelete)) |
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if req.form.has_key('__insert'): |
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toinsert = req.list_form_param('__insert', req.form, pop=True) |
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if toinsert: |
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self.insert_relations(parse_relations_descr(toinsert)) |
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self._cw.remove_pending_operations() |
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def _insert_entity(self, etype, eid, rqlquery): |
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rql = rqlquery.insert_query(etype) |
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try: |
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# get the new entity (in some cases, the type might have |
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# changed as for the File --> Image mutation) |
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entity = self._cw.execute(rql, rqlquery.kwargs).get_entity(0, 0) |
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neweid = entity.eid |
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except ValidationError, ex: |
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self._to_create[eid] = ex.entity |
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if self._cw.json_request: # XXX (syt) why? |
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ex.entity = eid |
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raise |
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self._to_create[eid] = neweid |
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return neweid |
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def _update_entity(self, eid, rqlquery): |
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rql = rqlquery.update_query(eid) |
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self._cw.execute(rql, rqlquery.kwargs) |
1753 | 134 |
|
0 | 135 |
def edit_entity(self, formparams, multiple=False): |
136 |
"""edit / create / copy an entity and return its eid""" |
|
137 |
etype = formparams['__type'] |
|
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138 |
entity = self._cw.vreg['etypes'].etype_class(etype)(self._cw) |
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139 |
entity.eid = formparams['eid'] |
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140 |
eid = self._get_eid(entity.eid) |
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141 |
is_main_entity = self._cw.form.get('__maineid') == formparams['eid'] |
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142 |
# let a chance to do some entity specific stuff.tn |
1753 | 143 |
entity.pre_web_edit() |
0 | 144 |
# create a rql query from parameters |
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145 |
rqlquery = RqlQuery() |
0 | 146 |
# process inlined relations at the same time as attributes |
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147 |
# this will generate less rql queries and might be useful in |
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148 |
# a few dark corners |
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149 |
formid = self._cw.form.get('__form_id', 'edition') |
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150 |
form = self._cw.vreg['forms'].select(formid, self._cw, entity=entity) |
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151 |
for field in form.fields: |
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152 |
if form.form_field_modified(field): |
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153 |
self.handle_formfield(form, field, entity, rqlquery) |
0 | 154 |
if eid is None: # creation or copy |
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155 |
entity.eid = self._insert_entity(etype, formparams['eid'], rqlquery) |
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156 |
elif rqlquery.edited: # edition of an existant entity |
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157 |
self._update_entity(eid, rqlquery) |
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158 |
if is_main_entity: |
0 | 159 |
self.notify_edited(entity) |
160 |
if formparams.has_key('__delete'): |
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161 |
todelete = self._cw.list_form_param('__delete', formparams, pop=True) |
0 | 162 |
self.delete_relations(parse_relations_descr(todelete)) |
163 |
if formparams.has_key('__cloned_eid'): |
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164 |
entity.copy_relations(typed_eid(formparams['__cloned_eid'])) |
0 | 165 |
if formparams.has_key('__insert'): |
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166 |
toinsert = self._cw.list_form_param('__insert', formparams, pop=True) |
0 | 167 |
self.insert_relations(parse_relations_descr(toinsert)) |
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168 |
if is_main_entity: # only execute linkto for the main entity |
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169 |
self.execute_linkto(entity.eid) |
0 | 170 |
return eid |
171 |
||
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172 |
def handle_formfield(self, form, field, entity, rqlquery): |
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173 |
eschema = entity.e_schema |
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174 |
try: |
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175 |
for attr, value in field.process_posted(form): |
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176 |
if not ( |
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177 |
(field.role == 'subject' and field.name in eschema.subjrels) |
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178 |
or |
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179 |
(field.role == 'object' and field.name in eschema.objrels)): |
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180 |
continue |
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181 |
rschema = self._cw.vreg.schema.rschema(field.name) |
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182 |
if rschema.final: |
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183 |
rqlquery.kwargs[attr] = value |
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184 |
rqlquery.edited.append('X %s %%(%s)s' % (attr, attr)) |
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185 |
elif rschema.inlined: |
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186 |
self.handle_inlined_relation(form, field, entity, rqlquery) |
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187 |
else: |
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188 |
self.relations_rql += self.handle_relation( |
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189 |
form, field, entity) |
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190 |
except ProcessFormError, exc: |
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191 |
self.errors.append((field, exc)) |
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|
192 |
|
0 | 193 |
def _action_apply(self): |
194 |
self._default_publish() |
|
195 |
self.reset() |
|
1753 | 196 |
|
0 | 197 |
def _action_cancel(self): |
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198 |
errorurl = self._cw.form.get('__errorurl') |
0 | 199 |
if errorurl: |
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200 |
self._cw.cancel_edition(errorurl) |
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|
201 |
self._cw.message = self._cw._('edit canceled') |
0 | 202 |
return self.reset() |
203 |
||
204 |
def _action_delete(self): |
|
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205 |
self.delete_entities(self._cw.edited_eids(withtype=True)) |
0 | 206 |
return self.reset() |
207 |
||
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208 |
def _relation_values(self, form, field, entity, late=False): |
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209 |
"""handle edition for the (rschema, x) relation of the given entity |
0 | 210 |
""" |
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211 |
values = set() |
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212 |
for eid in field.process_form_value(form): |
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213 |
if not eid: # AutoCompletionWidget |
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214 |
continue |
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215 |
typed_eid = self._get_eid(eid) |
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216 |
if typed_eid is None: |
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217 |
if late: |
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218 |
# eid is still None while it's already a late call |
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219 |
# this mean that the associated entity has not been created |
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220 |
raise Exception("eid %s is still not created" % eid) |
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221 |
self._pending_relations.append( (form, field, entity) ) |
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222 |
return None |
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223 |
values.add(typed_eid) |
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224 |
return values |
0 | 225 |
|
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226 |
def handle_inlined_relation(self, form, field, entity, rqlquery): |
0 | 227 |
"""handle edition for the (rschema, x) relation of the given entity |
228 |
""" |
|
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229 |
origvalues = set(row[0] for row in entity.related(field.name, field.role)) |
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230 |
values = self._relation_values(form, field, entity) |
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231 |
if values is None or values == origvalues: |
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232 |
return # not edited / not modified / to do later |
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233 |
attr = field.name |
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234 |
if values: |
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235 |
rqlquery.kwargs[attr] = iter(values).next() |
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236 |
rqlquery.edition.append('X %s %s' % (attr, attr.upper())) |
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237 |
rqlquery.restrictions.append('%s eid %%(%s)s' % (attr.upper(), attr)) |
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238 |
elif entity.has_eid(): |
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239 |
self.relations_rql += self.handle_relation(form, field, entity) |
0 | 240 |
|
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241 |
def handle_relation(self, form, field, entity, late=False): |
0 | 242 |
"""handle edition for the (rschema, x) relation of the given entity |
243 |
""" |
|
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244 |
origvalues = set(row[0] for row in entity.related(field.name, field.role)) |
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245 |
values = self._relation_values(form, field, entity, late) |
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246 |
if values is None or values == origvalues: |
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247 |
return # not edited / not modified / to do later |
0 | 248 |
etype = entity.e_schema |
4045
f4a52abb6f4f
cw 3.6 api update
Sandrine Ribeau <sandrine.ribeau@logilab.fr>
parents:
4007
diff
changeset
|
249 |
rschema = self._cw.vreg.schema.rschema(field.name) |
3387
a357d4147eee
[forms] work-in-progress, big editcontroller refactoring: let fields/widgets process posted data
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
3386
diff
changeset
|
250 |
if field.role == 'subject': |
0 | 251 |
desttype = rschema.objects(etype)[0] |
252 |
card = rschema.rproperty(etype, desttype, 'cardinality')[0] |
|
253 |
subjvar, objvar = 'X', 'Y' |
|
254 |
else: |
|
255 |
desttype = rschema.subjects(etype)[0] |
|
256 |
card = rschema.rproperty(desttype, etype, 'cardinality')[1] |
|
257 |
subjvar, objvar = 'Y', 'X' |
|
258 |
eid = entity.eid |
|
3387
a357d4147eee
[forms] work-in-progress, big editcontroller refactoring: let fields/widgets process posted data
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
3386
diff
changeset
|
259 |
if field.role == 'object' or not rschema.inlined or not values: |
0 | 260 |
# this is not an inlined relation or no values specified, |
261 |
# explicty remove relations |
|
1798
cc86fe8efaaa
pass default values along the whole call chain, fix hidden field update bug
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents:
1765
diff
changeset
|
262 |
rql = 'DELETE %s %s %s WHERE X eid %%(x)s, Y eid %%(y)s' % ( |
cc86fe8efaaa
pass default values along the whole call chain, fix hidden field update bug
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents:
1765
diff
changeset
|
263 |
subjvar, rschema, objvar) |
0 | 264 |
for reid in origvalues.difference(values): |
3387
a357d4147eee
[forms] work-in-progress, big editcontroller refactoring: let fields/widgets process posted data
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
3386
diff
changeset
|
265 |
yield (rql, {'x': eid, 'y': reid}, ('x', 'y')) |
1798
cc86fe8efaaa
pass default values along the whole call chain, fix hidden field update bug
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents:
1765
diff
changeset
|
266 |
seteids = values.difference(origvalues) |
cc86fe8efaaa
pass default values along the whole call chain, fix hidden field update bug
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents:
1765
diff
changeset
|
267 |
if seteids: |
cc86fe8efaaa
pass default values along the whole call chain, fix hidden field update bug
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents:
1765
diff
changeset
|
268 |
rql = 'SET %s %s %s WHERE X eid %%(x)s, Y eid %%(y)s' % ( |
cc86fe8efaaa
pass default values along the whole call chain, fix hidden field update bug
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents:
1765
diff
changeset
|
269 |
subjvar, rschema, objvar) |
cc86fe8efaaa
pass default values along the whole call chain, fix hidden field update bug
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents:
1765
diff
changeset
|
270 |
for reid in seteids: |
3387
a357d4147eee
[forms] work-in-progress, big editcontroller refactoring: let fields/widgets process posted data
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
3386
diff
changeset
|
271 |
yield (rql, {'x': eid, 'y': reid}, ('x', 'y')) |
1753 | 272 |
|
0 | 273 |
def _get_eid(self, eid): |
274 |
# should be either an int (existant entity) or a variable (to be |
|
275 |
# created entity) |
|
276 |
assert eid or eid == 0, repr(eid) # 0 is a valid eid |
|
277 |
try: |
|
278 |
return typed_eid(eid) |
|
279 |
except ValueError: |
|
280 |
try: |
|
281 |
return self._to_create[eid] |
|
282 |
except KeyError: |
|
283 |
self._to_create[eid] = None |
|
284 |
return None |
|
285 |
||
286 |
def _linked_eids(self, eids, late=False): |
|
287 |
"""return a list of eids if they are all known, else raise ToDoLater |
|
288 |
""" |
|
289 |
||
1753 | 290 |