modifier works with

lib/model.js

@@ -239,7 +239,17 @@ lastStepModifierFunctions.$push = function (obj, field, value) {
   if (!obj.hasOwnProperty(field)) { obj[field] = []; }
 
   if (!util.isArray(obj[field])) { throw "Can't $push an element on non-array values"; }
-  obj[field].push(value);
+
+  if (value !== null && typeof value === 'object' && value.$each) {
+    if (Object.keys(value).length > 1) { throw "Can't use another field in conjunction with $each"; }
+    if (!util.isArray(value.$each)) { throw "$each requires an array value"; }
+
+    value.$each.forEach(function (v) {
+      obj[field].push(v);
+    });
+  } else {
+    obj[field].push(value);
+  }
 };
 
 

test/model.test.js

@@ -344,7 +344,7 @@ describe('Model', function () {
       });
 
       it('Can push an element to a non-existent field and will create the array', function () {
-        var obj = { arr: [] }
+        var obj = {}
           , modified;
 
         modified = model.modify(obj, { $push: { arr: 'world' } });
@@ -377,6 +377,22 @@ describe('Model', function () {
         }).should.throw();
       });
 
+      it('Can use the $each modifier to add multiple values to an array at once', function () {
+        var obj = { arr: ['hello'] }
+          , modified;
+
+        modified = model.modify(obj, { $push: { arr: { $each: ['world', 'earth', 'everything'] } } });
+        assert.deepEqual(modified, { arr: ['hello', 'world', 'earth', 'everything'] });
+
+        (function () {
+          modified = model.modify(obj, { $push: { arr: { $each: 45 } } });
+        }).should.throw();
+
+        (function () {
+          modified = model.modify(obj, { $push: { arr: { $each: ['world'], unauthorized: true } } });
+        }).should.throw();
+      });
+
     });   // End of '$push modifier'
 
     describe('$addToSet modifier', function () {