Add generic "bulk delete" support to MasterView

tailbone/static/css/newgrids.css

@@ -34,6 +34,11 @@
     padding: 0 0.5em 0 0;
 }
 
+.newgrid-wrapper .grid-header td.tools form {
+    display: inline-block;
+}
+
+
 /******************************
  * filters
  ******************************/

tailbone/templates/master/index.mako

@@ -43,6 +43,25 @@
 
         % endif
 
+        % if master.bulk_deletable and request.has_perm('{}.bulk_delete'.format(permission_prefix)):
+
+        $('form[name="bulk-delete"] button').click(function() {
+            var count = 0;
+            var match = /showing \d+ thru \d+ of (\S+)/.exec($('.pager .showing').text());
+            if (match) {
+                count = match[1];
+            } else {
+                alert("There don't seem to be any results to delete!");
+                return;
+            }
+            if (! confirm("You are about to delete " + count + " ${model_title_plural}.\n\nAre you sure?")) {
+                return
+            }
+            $(this).button('disable').button('option', 'label', "Deleting Results...");
+            $('form[name="bulk-delete"]').submit();
+        });
+
+        % endif
     });
   </script>
 </%def>
@@ -61,6 +80,12 @@
       <button type="submit">Merge 2 ${model_title_plural}</button>
       ${h.end_form()}
   % endif
+  % if master.bulk_deletable and request.has_perm('{}.bulk_delete'.format(permission_prefix)):
+      ${h.form(url('{}.bulk_delete'.format(route_prefix)), name='bulk-delete')}
+      ${h.csrf_token(request)}
+      <button type="button">Delete Results</button>
+      ${h.end_form()}
+  % endif
 </%def>
 
 ${grid.render_complete(tools=capture(self.grid_tools).strip(), context_menu=capture(self.context_menu_items).strip())|n}

tailbone/views/master.py

@@ -54,6 +54,7 @@ class MasterView(View):
     viewable = True
     editable = True
     deletable = True
+    bulk_deletable = False
     mergeable = False
 
     listing = False
@@ -408,6 +409,19 @@ class MasterView(View):
             'instance_title': instance_title,
             'form': form})
 
+    def bulk_delete(self):
+        """
+        Delete all records matching the current grid query
+        """
+        if self.request.method == 'POST':
+            query = self.get_effective_query(sortable=False)
+            count = query.count()
+            query.delete(synchronize_session=False)
+            self.request.session.flash("Deleted {:,d} {}".format(count, self.get_model_title_plural()))
+        else:
+            self.request.session.flash("Sorry, you must POST to do a bulk delete operation")
+        return self.redirect(self.get_index_url())
+
     def get_merge_fields(self):
         if hasattr(self, 'merge_fields'):
             return self.merge_fields
@@ -895,7 +909,7 @@ class MasterView(View):
         """
         return session.query(self.get_model_class())
 
-    def get_effective_data(self, session=None):
+    def get_effective_data(self, session=None, **kwargs):
         """
         Convenience method which returns the "effective" data for the master
         grid, filtered and sorted to match what would show on the UI, but not
@@ -903,12 +917,14 @@ class MasterView(View):
         """
         if session is None:
             session = self.Session()
-        grid = self.make_grid(session=session, pageable=False,
-                              main_actions=[], more_actions=[])
+        kwargs.setdefault('pageable', False)
+        kwargs.setdefault('main_actions', [])
+        kwargs.setdefault('more_actions', [])
+        grid = self.make_grid(session=session, **kwargs)
         return grid._fa_grid.rows
 
-    def get_effective_query(self, session):
-        return self.get_effective_data(session)
+    def get_effective_query(self, session=None, **kwargs):
+        return self.get_effective_data(session=session, **kwargs)
 
     def checkbox(self, instance):
         """
@@ -1295,6 +1311,14 @@ class MasterView(View):
             config.add_tailbone_permission(permission_prefix, '{0}.create'.format(permission_prefix),
                                            "Create new {0}".format(model_title))
 
+        # bulk delete
+        if cls.bulk_deletable:
+            config.add_route('{}.bulk_delete'.format(route_prefix), '{}/bulk-delete'.format(url_prefix))
+            config.add_view(cls, attr='bulk_delete', route_name='{}.bulk_delete'.format(route_prefix),
+                            permission='{}.bulk_delete'.format(permission_prefix))
+            config.add_tailbone_permission(permission_prefix, '{}.bulk_delete'.format(permission_prefix),
+                                           "Bulk delete {}".format(model_title_plural))
+
         # merge
         if cls.mergeable:
             config.add_route('{}.merge'.format(route_prefix), '{}/merge'.format(url_prefix))