author | Sylvain Thénault <sylvain.thenault@logilab.fr> |
Wed, 24 Mar 2010 08:42:49 +0100 | |
changeset 4984 | 6cb91be7707f |
parent 4940 | 3143a1258d62 |
child 5038 | 90493551b1eb |
permissions | -rw-r--r-- |
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"""The edit controller, handling form submitting. |
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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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: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 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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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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124 |
if self._cw.json_request: # XXX (syt) why? |
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125 |
ex.entity = eid |
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126 |
raise |
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127 |
self._to_create[eid] = neweid |
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128 |
return neweid |
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129 |
|
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130 |
def _update_entity(self, eid, rqlquery): |
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131 |
self._cw.execute(rqlquery.update_query(eid), rqlquery.kwargs) |
1753 | 132 |
|
0 | 133 |
def edit_entity(self, formparams, multiple=False): |
134 |
"""edit / create / copy an entity and return its eid""" |
|
135 |
etype = formparams['__type'] |
|
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136 |
entity = self._cw.vreg['etypes'].etype_class(etype)(self._cw) |
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137 |
entity.eid = formparams['eid'] |
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138 |
is_main_entity = self._cw.form.get('__maineid') == formparams['eid'] |
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139 |
# let a chance to do some entity specific stuff |
1753 | 140 |
entity.pre_web_edit() |
0 | 141 |
# create a rql query from parameters |
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142 |
rqlquery = RqlQuery() |
0 | 143 |
# process inlined relations at the same time as attributes |
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144 |
# this will generate less rql queries and might be useful in |
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145 |
# a few dark corners |
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146 |
formid = self._cw.form.get('__form_id', 'edition') |
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147 |
form = self._cw.vreg['forms'].select(formid, self._cw, entity=entity) |
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148 |
eid = form.actual_eid(entity.eid) |
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149 |
form.formvalues = {} # init fields value cache |
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150 |
try: |
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151 |
editedfields = formparams['_cw_edited_fields'] |
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152 |
except KeyError: |
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153 |
raise RequestError(self._cw._('no edited fields specified for entity %s' % entity.eid)) |
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154 |
for editedfield in splitstrip(editedfields): |
0 | 155 |
try: |
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156 |
name, role = editedfield.split('-') |
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157 |
except: |
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158 |
name = editedfield |
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159 |
role = None |
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160 |
if form.field_by_name.im_func.func_code.co_argcount == 4: # XXX |
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161 |
field = form.field_by_name(name, role, eschema=entity.e_schema) |
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162 |
else: |
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163 |
field = form.field_by_name(name, role) |
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164 |
for field in field.actual_fields(form): |
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165 |
if field.has_been_modified(form): |
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166 |
self.handle_formfield(form, field, rqlquery) |
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167 |
if self.errors: |
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168 |
errors = dict((f.role_name(), unicode(ex)) for f, ex in self.errors) |
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169 |
raise ValidationError(entity.eid, errors) |
0 | 170 |
if eid is None: # creation or copy |
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171 |
entity.eid = self._insert_entity(etype, formparams['eid'], rqlquery) |
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172 |
elif rqlquery.edited: # edition of an existant entity |
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173 |
self._update_entity(eid, rqlquery) |
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|
174 |
if is_main_entity: |
0 | 175 |
self.notify_edited(entity) |
176 |
if formparams.has_key('__delete'): |
|
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|
177 |
# XXX deprecate? |
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178 |
todelete = self._cw.list_form_param('__delete', formparams, pop=True) |
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|
179 |
autoform.delete_relations(self._cw, todelete) |
0 | 180 |
if formparams.has_key('__cloned_eid'): |
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|
181 |
entity.copy_relations(typed_eid(formparams['__cloned_eid'])) |
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182 |
if is_main_entity: # only execute linkto for the main entity |
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|
183 |
self.execute_linkto(entity.eid) |
0 | 184 |
return eid |
185 |
||
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186 |
def handle_formfield(self, form, field, rqlquery=None): |
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187 |
eschema = form.edited_entity.e_schema |
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|
188 |
try: |
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189 |
for field, value in field.process_posted(form): |
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|
190 |
if not ( |
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|
191 |
(field.role == 'subject' and field.name in eschema.subjrels) |
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|
192 |
or |
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|
193 |
(field.role == 'object' and field.name in eschema.objrels)): |
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|
194 |
continue |
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|
195 |
rschema = self._cw.vreg.schema.rschema(field.name) |
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|
196 |
if rschema.final: |
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|
197 |
rqlquery.kwargs[field.name] = value |
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198 |
rqlquery.edited.append('X %s %%(%s)s' % (rschema, rschema)) |
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|
199 |
else: |
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|
200 |
if form.edited_entity.has_eid(): |
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201 |
origvalues = set(entity.eid for entity in form.edited_entity.related(field.name, field.role, entities=True)) |
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202 |
else: |
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203 |
origvalues = set() |
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204 |
if value is None or value == origvalues: |
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|
205 |
continue # not edited / not modified / to do later |
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|
206 |
if rschema.inlined and rqlquery is not None and field.role == 'subject': |
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207 |
self.handle_inlined_relation(form, field, value, origvalues, rqlquery) |
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208 |
elif form.edited_entity.has_eid(): |
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209 |
self.handle_relation(form, field, value, origvalues) |
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210 |
else: |
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|
211 |
self._pending_fields.add( (form, field) ) |
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212 |
|
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|
213 |
except ProcessFormError, exc: |
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214 |
self.errors.append((field, exc)) |
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215 |
|
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216 |
def handle_inlined_relation(self, form, field, values, origvalues, rqlquery): |
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217 |
"""handle edition for the (rschema, x) relation of the given entity |
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218 |
""" |
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219 |
attr = field.name |
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220 |
if values: |
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221 |
rqlquery.kwargs[attr] = iter(values).next() |
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|
222 |
rqlquery.edited.append('X %s %s' % (attr, attr.upper())) |
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rqlquery.restrictions.append('%s eid %%(%s)s' % (attr.upper(), attr)) |
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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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235 |
subjvar, objvar = 'X', 'Y' |
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236 |
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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241 |
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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243 |
# 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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245 |
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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249 |
if seteids: |
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rql = 'SET %s %s %s WHERE X eid %%(x)s, Y eid %%(y)s' % ( |
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251 |
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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254 |
|
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def delete_entities(self, eidtypes): |
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"""delete entities from the repository""" |
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redirect_info = set() |
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eidtypes = tuple(eidtypes) |
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for eid, etype in eidtypes: |
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entity = self._cw.entity_from_eid(eid, etype) |
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path, params = entity.after_deletion_path() |
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redirect_info.add( (path, tuple(params.iteritems())) ) |
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entity.delete() |
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if len(redirect_info) > 1: |
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# In the face of ambiguity, refuse the temptation to guess. |
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self._after_deletion_path = 'view', () |
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else: |
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self._after_deletion_path = iter(redirect_info).next() |
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if len(eidtypes) > 1: |
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self._cw.set_message(self._cw._('entities deleted')) |
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else: |
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self._cw.set_message(self._cw._('entity deleted')) |
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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.set_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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