Merge pull request #1236 from symonbaikov/feat/no-member-filter

Add filter for cards without members ("No member" filter)

Conflicted with the negative label filter, which had added its own field to
the board model next to this one. Both stay; they filter on different things.

client/src/models/Board.js

@@ -69,6 +69,9 @@ export default class extends BaseModel {
     filterUsers: many('User', 'filterBoards'),
     filterLabels: many('Label', 'filterBoards'),
     filterExcludedLabels: many('Label', 'filterExcludedBoards'),
+    filterNoMember: attr({
+      getDefault: () => false,
+    }),
   };
 
   static reducer({ type, payload }, Board) {
@@ -299,6 +302,17 @@ export default class extends BaseModel {
         });
 
         break;
+      case ActionTypes.NO_MEMBER_TO_BOARD_FILTER_SET: {
+        const boardModel = Board.withId(payload.boardId);
+        boardModel.filterUsers.clear();
+        boardModel.update({ filterNoMember: true });
+        break;
+      }
+      case ActionTypes.NO_MEMBER_FROM_BOARD_FILTER_REMOVE: {
+        const boardModel = Board.withId(payload.boardId);
+        boardModel.update({ filterNoMember: false });
+        break;
+      }
       default:
     }
   }
@@ -416,6 +430,11 @@ export default class extends BaseModel {
       cardModels = filterCardLabels(cardModels, filterLabelIds, filterExcludedLabelIds);
     }
 
+    if (this.filterNoMember) {
+      cardModels = cardModels.filter((cardModel) => cardModel.users.toRefArray().length === 0);
+      return cardModels;
+    }
+
     return cardModels;
   }