web/views/ajaxedit.py
author sylvain.thenault@logilab.fr
Fri, 17 Apr 2009 18:45:06 +0200
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new style security management forms
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"""Set of views allowing edition of entities/relations using ajax
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:organization: Logilab
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:copyright: 2009 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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__docformat__ = "restructuredtext en"
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from cubicweb.selectors import match_form_params, match_kwargs
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from cubicweb.web.box import EditRelationBoxTemplate
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class AddRelationView(EditRelationBoxTemplate):
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    """base class for view which let add entities linked
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    by a given relation
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    subclasses should define at least id, rtype and target
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    class attributes.
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    """
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    __registry__ = 'views'
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    __select__ = (match_form_params('rtype', 'target')
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                  | match_kwargs('rtype', 'target'))
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    property_defs = {} # don't want to inherit this from Box
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    id = 'xaddrelation'
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    expected_kwargs = form_params = ('rtype', 'target')
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    build_js = EditRelationBoxTemplate.build_reload_js_call
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    def cell_call(self, row, col, rtype=None, target=None, etype=None):
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        self.rtype = rtype or self.req.form['rtype']
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        self.target = target or self.req.form['target']
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        self.etype = etype or self.req.form.get('etype')
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        entity = self.entity(row, col)
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        rschema = self.schema.rschema(self.rtype)
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        if not self.etype:
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            if self.target == 'object':
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                etypes = rschema.objects(entity.e_schema)
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            else:
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                etypes = rschema.subjects(entity.e_schema)
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            if len(etypes) == 1:
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                self.etype = etypes[0]
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        fakebox = []
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        self.w(u'<div id="%s">' % self.id)
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        self.w(u'<h1>%s</h1>' % self.req._('relation %(relname)s of %(ent)s')
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               % {'relname': rschema.display_name(self.req, self.xtarget()[0]),
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                  'ent': entity.view('incontext')})
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        self.w(u'<ul>')
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        self.w_unrelated(fakebox, entity)
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        for boxitem in fakebox:
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            boxitem.render(self.w)
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        self.w(u'</ul></div>')
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    def unrelated_entities(self, entity):
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        """returns the list of unrelated entities
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        if etype is not defined on the Box's class, the default
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        behaviour is to use the entity's appropraite vocabulary function
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        """
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        x, target = self.xtarget()
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        # use entity.unrelated if we've been asked for a particular etype
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        if getattr(self, 'etype', None):
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            rset = entity.unrelated(self.rtype, self.etype, x, ordermethod='fetch_order')
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            self.pagination(self.req, rset, w=self.w)
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            return rset.entities()
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        # in other cases, use vocabulary functions
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        entities = []
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        for _, eid in entity.vocabulary(self.rtype, x):
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            if eid is not None:
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                rset = self.req.eid_rset(eid)
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                entities.append(rset.get_entity(0, 0))
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        return entities