Python django.contrib.contenttypes.generic.GenericRelation() Examples

The following are 2 code examples of django.contrib.contenttypes.generic.GenericRelation(). You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may also want to check out all available functions/classes of the module django.contrib.contenttypes.generic , or try the search function .
Example #1
Source File: state.py    From django-river with BSD 3-Clause "New" or "Revised" License 6 votes vote down vote up 
def contribute_to_class(self, cls, name, *args, **kwargs):
        @classproperty
        def river(_self):
            return RiverObject(_self)

        self.field_name = name

        self._add_to_class(cls, self.field_name + "_transition_approvals",
                           GenericRelation('%s.%s' % (TransitionApproval._meta.app_label, TransitionApproval._meta.object_name)))
        self._add_to_class(cls, self.field_name + "_transitions", GenericRelation('%s.%s' % (Transition._meta.app_label, Transition._meta.object_name)))

        if id(cls) not in workflow_registry.workflows:
            self._add_to_class(cls, "river", river)

        super(StateField, self).contribute_to_class(cls, name, *args, **kwargs)

        if id(cls) not in workflow_registry.workflows:
            post_save.connect(_on_workflow_object_saved, self.model, False, dispatch_uid='%s_%s_riverstatefield_post' % (self.model, name))
            post_delete.connect(_on_workflow_object_deleted, self.model, False, dispatch_uid='%s_%s_riverstatefield_post' % (self.model, name))

        workflow_registry.add(self.field_name, cls)
Example #2
Source File: xversion.py    From devops with MIT License 5 votes vote down vote up 
def _register_model(admin, model):
    if not hasattr(admin, 'revision_manager'):
        admin.revision_manager = default_revision_manager
    if not hasattr(admin, 'reversion_format'):
        admin.reversion_format = 'json'

    if not admin.revision_manager.is_registered(model):
        inline_fields = []
        for inline in getattr(admin, 'inlines', []):
            inline_model = inline.model
            if getattr(inline, 'generic_inline', False):
                ct_field = getattr(inline, 'ct_field', 'content_type')
                ct_fk_field = getattr(inline, 'ct_fk_field', 'object_id')
                for field in model._meta.many_to_many:
                    if isinstance(field, GenericRelation) and field.rel.to == inline_model and field.object_id_field_name == ct_fk_field and field.content_type_field_name == ct_field:
                        inline_fields.append(field.name)
                _autoregister(admin, inline_model)
            else:
                fk_name = getattr(inline, 'fk_name', None)
                if not fk_name:
                    for field in inline_model._meta.fields:
                        if isinstance(field, (models.ForeignKey, models.OneToOneField)) and issubclass(model, field.rel.to):
                            fk_name = field.name
                _autoregister(admin, inline_model, follow=[fk_name])
                if not inline_model._meta.get_field(fk_name).rel.is_hidden():
                    accessor = inline_model._meta.get_field(
                        fk_name).related.get_accessor_name()
                    inline_fields.append(accessor)
        _autoregister(admin, model, inline_fields)