[RFR] Add support for array in filters

Author: djhi

src/resolver/Query/applyFilters.js

@@ -30,12 +30,25 @@ export default (entityData, filter = {}) => {
                 return;
             }
 
-            items = items.filter(
-                d =>
-                    filter[key] instanceof Date
-                        ? +d[key] == +filter[key]
-                        : d[key] == filter[key]
-            );
+            if (Array.isArray(filter[key])) {
+                items = items.filter(item => {
+                    if (Array.isArray(item[key])) {
+                        // array filter and array item value: where all items in values
+                        return filter[key].every(v =>
+                            item[key].some(itemValue => itemValue == v)
+                        );
+                    }
+                    // where item in values
+                    return filter[key].filter(v => v == item[key]).length > 0;
+                });
+            } else {
+                items = items.filter(
+                    d =>
+                        filter[key] instanceof Date
+                            ? +d[key] == +filter[key]
+                            : d[key] == filter[key]
+                );
+            }
         });
 
         if (filter.q) {