Merge pull request #37 from marmelab/better-filters

add _neq filter

README.md

@@ -185,7 +185,7 @@ FakeRest uses a standard REST flavor, described below.
           { "id": 3, "author_id": 1, "title": "Sense and Sensibility" }
         ]
 
-        // use _gt, _gte, _lte, or _lt suffix on filter names to make range queries
+        // use _gt, _gte, _lte, _lt, or _neq suffix on filter names to make range queries
         GET /books?filter={"price_lte":20} // return books where price is less than or equal to 20
         GET /books?filter={"price_gt":20} // return books where price is greater than 20
 

src/Collection.js

@@ -47,6 +47,11 @@ const getSimpleFilter = (key, value) => {
         let realKey = key.replace(/(_gt)$/, '');
         return item => get(item, realKey) > value;
     }
+    if (key.indexOf('_neq') !== -1) {
+        // not equal
+        let realKey = key.replace(/(_neq)$/, '');
+        return item => get(item, realKey) != value;
+    }
     if (Array.isArray(value)) {
         return item => {
             if (Array.isArray(get(item, key))) {

src/Collection.spec.js

@@ -365,6 +365,14 @@ describe("Collection", () => {
         expect(collection.getAll({ filter: { v_lte: 0 } })).toEqual([]);
       });
 
+      it("should filter by inequality using _neq", () => {
+        const collection = new Collection([{ v: 1 }, { v: 2 }, { v: 3 }]);
+        expect(collection.getAll({ filter: { v_neq: 2 } })).toEqual([
+          { v: 1, id: 0 },
+          { v: 3, id: 2 },
+        ]);
+      });
+
       it("should filter by array", () => {
         const collection = new Collection([
           { a: "H" },