Merge pull request #3507 from akre54/matches-with-callback

Matches with predicate

backbone.js

@@ -421,7 +421,7 @@
 
     // Special-cased proxy to underscore's `_.matches` method.
     matches: function(attrs) {
-      return _.matches(attrs)(this.attributes);
+      return !!_.iteratee(attrs, this)(this.attributes);
     },
 
     // Set a hash of model attributes on the object, firing `"change"`. This is

bower.json

@@ -3,7 +3,7 @@
   "version"       : "1.1.2",
   "main"          : "backbone.js",
   "dependencies"  : {
-    "underscore"  : ">=1.6.0"
+    "underscore"  : ">=1.7.0"
   },
   "ignore"        : ["docs", "examples", "test", "*.yml", "*.html", "*.ico", "*.md", "CNAME"]
 }

package.json

@@ -5,7 +5,7 @@
   "keywords"      : ["model", "view", "controller", "router", "server", "client", "browser"],
   "author"        : "Jeremy Ashkenas <jeremy@documentcloud.org>",
   "dependencies"  : {
-    "underscore"  : ">=1.6.0"
+    "underscore"  : ">=1.7.0"
   },
   "devDependencies": {
     "coffee-script": "1.7.1",

test/model.js

@@ -216,6 +216,19 @@
     strictEqual(model.matches({'name': 'Jonas', 'cool': false}), false);
   });
 
+  test("matches with predicate", function() {
+    var model = new Backbone.Model({a: 0});
+
+    strictEqual(model.matches(function(attr) {
+      return attr.a > 1 && attr.b != null;
+    }), false);
+
+    model.set({a: 3, b: true});
+
+    strictEqual(model.matches(function(attr) {
+      return attr.a > 1 && attr.b != null;
+    }), true);
+  })
 
   test("set and unset", 8, function() {
     var a = new Backbone.Model({id: 'id', foo: 1, bar: 2, baz: 3});