author | Sylvain Thénault <sylvain.thenault@logilab.fr> |
Fri, 19 Feb 2010 09:34:14 +0100 | |
branch | stable |
changeset 4643 | 921737d2e3a8 |
parent 4387 | 4aacd6492ef4 |
child 4665 | 873ebd160954 |
permissions | -rw-r--r-- |
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"""The edit controller, handling form submitting. |
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:organization: Logilab |
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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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: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 rql.utils import rqlvar_maker |
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from logilab.common.textutils import splitstrip |
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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.views import basecontrollers, autoform |
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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(basecontrollers.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_fields = req.data['pendingfields'] = set() |
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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), ex: |
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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): |
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raise ValidationError(None, {None: unicode(ex)}) |
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# handle relations in newly created entities |
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if self._pending_fields: |
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for form, field in self._pending_fields: |
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self.handle_formfield(form, field) |
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# execute rql to set all relations |
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for querydef in self.relations_rql: |
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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: |
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autoform.delete_relations(self._cw, todelete) |
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if req.form.has_key('__insert'): |
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warn('[3.6] stop using __insert, support will be removed', |
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DeprecationWarning) |
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toinsert = req.list_form_param('__insert', req.form, pop=True) |
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if toinsert: |
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autoform.insert_relations(self._cw, toinsert) |
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self._cw.remove_pending_operations() |
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if self.errors: |
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errors = dict((f.name, unicode(ex)) for f, ex in self.errors) |
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raise ValidationError(form.get('__maineid'), errors) |
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|
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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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123 |
ex.entity = eid |
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124 |
raise |
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125 |
self._to_create[eid] = neweid |
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126 |
return neweid |
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127 |
|
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128 |
def _update_entity(self, eid, rqlquery): |
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129 |
self._cw.execute(rqlquery.update_query(eid), rqlquery.kwargs) |
1753 | 130 |
|
0 | 131 |
def edit_entity(self, formparams, multiple=False): |
132 |
"""edit / create / copy an entity and return its eid""" |
|
133 |
etype = formparams['__type'] |
|
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134 |
entity = self._cw.vreg['etypes'].etype_class(etype)(self._cw) |
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135 |
entity.eid = formparams['eid'] |
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136 |
is_main_entity = self._cw.form.get('__maineid') == formparams['eid'] |
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137 |
# let a chance to do some entity specific stuff |
1753 | 138 |
entity.pre_web_edit() |
0 | 139 |
# create a rql query from parameters |
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140 |
rqlquery = RqlQuery() |
0 | 141 |
# process inlined relations at the same time as attributes |
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142 |
# this will generate less rql queries and might be useful in |
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143 |
# a few dark corners |
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144 |
formid = self._cw.form.get('__form_id', 'edition') |
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145 |
form = self._cw.vreg['forms'].select(formid, self._cw, entity=entity) |
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146 |
eid = form.actual_eid(entity.eid) |
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147 |
form.formvalues = {} # init fields value cache |
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148 |
try: |
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149 |
editedfields = formparams['_cw_edited_fields'] |
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150 |
except KeyError: |
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151 |
raise RequestError(self._cw._('no edited fields specified for entity %s' % entity.eid)) |
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152 |
for editedfield in splitstrip(editedfields): |
0 | 153 |
try: |
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154 |
name, role = editedfield.split('-') |
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155 |
except: |
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156 |
name = editedfield |
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157 |
role = None |
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158 |
if form.field_by_name.im_func.func_code.co_argcount == 4: # XXX |
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159 |
field = form.field_by_name(name, role, eschema=entity.e_schema) |
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160 |
else: |
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161 |
field = form.field_by_name(name, role) |
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162 |
if field.has_been_modified(form): |
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163 |
self.handle_formfield(form, field, rqlquery) |
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164 |
if self.errors: |
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165 |
errors = dict((f.role_name(), unicode(ex)) for f, ex in self.errors) |
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166 |
raise ValidationError(entity.eid, errors) |
0 | 167 |
if eid is None: # creation or copy |
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168 |
entity.eid = self._insert_entity(etype, formparams['eid'], rqlquery) |
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169 |
elif rqlquery.edited: # edition of an existant entity |
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170 |
self._update_entity(eid, rqlquery) |
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171 |
if is_main_entity: |
0 | 172 |
self.notify_edited(entity) |
173 |
if formparams.has_key('__delete'): |
|
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|
174 |
# XXX deprecate? |
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175 |
todelete = self._cw.list_form_param('__delete', formparams, pop=True) |
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176 |
autoform.delete_relations(self._cw, todelete) |
0 | 177 |
if formparams.has_key('__cloned_eid'): |
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178 |
entity.copy_relations(typed_eid(formparams['__cloned_eid'])) |
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179 |
if is_main_entity: # only execute linkto for the main entity |
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180 |
self.execute_linkto(entity.eid) |
0 | 181 |
return eid |
182 |
||
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183 |
def handle_formfield(self, form, field, rqlquery=None): |
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184 |
eschema = form.edited_entity.e_schema |
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185 |
try: |
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186 |
for field, value in field.process_posted(form): |
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187 |
if not ( |
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188 |
(field.role == 'subject' and field.name in eschema.subjrels) |
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|
189 |
or |
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190 |
(field.role == 'object' and field.name in eschema.objrels)): |
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191 |
continue |
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|
192 |
rschema = self._cw.vreg.schema.rschema(field.name) |
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|
193 |
if rschema.final: |
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194 |
rqlquery.kwargs[field.name] = value |
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195 |
rqlquery.edited.append('X %s %%(%s)s' % (rschema, rschema)) |
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196 |
else: |
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197 |
if form.edited_entity.has_eid(): |
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198 |
origvalues = set(entity.eid for entity in form.edited_entity.related(field.name, field.role, entities=True)) |
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199 |
else: |
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200 |
origvalues = set() |
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201 |
if value is None or value == origvalues: |
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202 |
continue # not edited / not modified / to do later |
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|
203 |
if rschema.inlined and rqlquery is not None and field.role == 'subject': |
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204 |
self.handle_inlined_relation(form, field, value, origvalues, rqlquery) |
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205 |
elif form.edited_entity.has_eid(): |
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206 |
self.handle_relation(form, field, value, origvalues) |
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207 |
else: |
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208 |
self._pending_fields.add( (form, field) ) |
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209 |
|
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210 |
except ProcessFormError, exc: |
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211 |
self.errors.append((field, exc)) |
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212 |
|
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213 |
def handle_inlined_relation(self, form, field, values, origvalues, rqlquery): |
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214 |
"""handle edition for the (rschema, x) relation of the given entity |
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215 |
""" |
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216 |
attr = field.name |
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217 |
if values: |
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218 |
rqlquery.kwargs[attr] = iter(values).next() |
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219 |
rqlquery.edited.append('X %s %s' % (attr, attr.upper())) |
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220 |
rqlquery.restrictions.append('%s eid %%(%s)s' % (attr.upper(), attr)) |
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221 |
elif form.edited_entity.has_eid(): |
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self.handle_relation(form, field, values, origvalues) |
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|
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def handle_relation(self, form, field, values, origvalues): |
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"""handle edition for the (rschema, x) relation of the given entity |
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""" |
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etype = form.edited_entity.e_schema |
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rschema = self._cw.vreg.schema.rschema(field.name) |
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if field.role == 'subject': |
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desttype = rschema.objects(etype)[0] |
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card = rschema.rdef(etype, desttype).cardinality[0] |
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subjvar, objvar = 'X', 'Y' |
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else: |
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desttype = rschema.subjects(etype)[0] |
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card = rschema.rdef(desttype, etype).cardinality[1] |
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subjvar, objvar = 'Y', 'X' |
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eid = form.edited_entity.eid |
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if field.role == 'object' or not rschema.inlined or not values: |
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# this is not an inlined relation or no values specified, |
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# explicty remove relations |
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rql = 'DELETE %s %s %s WHERE X eid %%(x)s, Y eid %%(y)s' % ( |
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subjvar, rschema, objvar) |
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for reid in origvalues.difference(values): |
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self.relations_rql.append((rql, {'x': eid, 'y': reid}, ('x', 'y'))) |
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seteids = values.difference(origvalues) |
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if seteids: |
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rql = 'SET %s %s %s WHERE X eid %%(x)s, Y eid %%(y)s' % ( |
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subjvar, rschema, objvar) |
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for reid in seteids: |
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self.relations_rql.append((rql, {'x': eid, 'y': reid}, ('x', 'y'))) |
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def _action_apply(self): |
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self._default_publish() |
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self.reset() |
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def _action_cancel(self): |
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errorurl = self._cw.form.get('__errorurl') |
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if errorurl: |
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self._cw.cancel_edition(errorurl) |
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self._cw.message = self._cw._('edit canceled') |
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return self.reset() |
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def _action_delete(self): |
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self.delete_entities(self._cw.edited_eids(withtype=True)) |
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return self.reset() |
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