Add widget support to SourceColumn

Allow passing a widget class to SourceColumn. This makes
using lambdas to render model column unnecesary and are
mostly removed too.

Signed-off-by: Roberto Rosario <Roberto.Rosario@mayan-edms.com>

mayan/apps/linking/apps.py

@@ -57,28 +57,22 @@ class LinkingApp(MayanAppConfig):
         )
 
         SourceColumn(
-            source=ResolvedSmartLink, label=_('Label'),
             func=lambda context: context['object'].get_label_for(
                 document=context['document']
-            )
+            ), label=_('Label'), source=ResolvedSmartLink
         )
 
         SourceColumn(
-            source=SmartLink, label=_('Dynamic label'),
-            attribute='dynamic_label'
+            attribute='label', is_identifier=True, source=SmartLink
         )
+        SourceColumn(attribute='dynamic_label', source=SmartLink)
         SourceColumn(
-            source=SmartLink, label=_('Enabled'),
-            func=lambda context: TwoStateWidget(
-                state=context['object'].enabled
-            ).render()
+            attribute='enabled', source=SmartLink, widget=TwoStateWidget
         )
 
         SourceColumn(
-            source=SmartLinkCondition, label=_('Enabled'),
-            func=lambda context: TwoStateWidget(
-                state=context['object'].enabled
-            ).render()
+            attribute='enabled', source=SmartLinkCondition,
+            widget=TwoStateWidget
         )
 
         menu_facet.bind_links(

mayan/apps/linking/views.py

@@ -139,7 +139,7 @@ class SmartLinkListView(SingleObjectListView):
 
     def get_extra_context(self):
         return {
-            'hide_link': True,
+            'hide_object': True,
             'no_results_icon': icon_smart_link_setup,
             'no_results_main_link': link_smart_link_create.resolve(
                 context=RequestContext(request=self.request)