Added a bunch of stuff

public/js/directives.js

@@ -872,3 +872,36 @@ angular.module('biomed.directives', [])
 		}
 	};
 })
+.directive('abDeviceUnique', function(Devices, $timeout) {
+  return {
+    restrict: 'A',
+    require: 'ngModel',
+    link: function(scope, element, attrs, ngModel) {
+      var stop_timeout;
+      return scope.$watch(function() {
+        return ngModel.$modelValue;
+      }, function(name) {
+        $timeout.cancel(stop_timeout);
+
+        if (!name) {
+          ngModel.$setValidity('unique', true);
+        }
+
+        stop_timeout = $timeout(function() {
+          var keyProperty = scope.$eval(attrs.abDeviceUnique);
+
+          if (name) {
+            Devices.isUnique({
+              key: keyProperty.key,
+              field: keyProperty.field,
+              value: name
+            }, function(result) {
+              console.log('unique = ' + result.isUnique);
+              ngModel.$setValidity('unique', result.isUnique);
+            });
+          }
+        }, 200);
+      });
+    }
+  };
+})