bootstrap的编辑标记 angularjs input 弹出框

.html

<div>
    {{instance.description}}
    <span class="glyphicon glyphicon-pencil btn-link" ng-click="editInstance(instance)" ></span>
</div>

//以下是做出弹出框
<script type="text/ng-template" id="edit-instance-desc.html">
    <div class="modal-header">
        <h3>Please Edit Instance's Description</h3>
    </div>

    <div class="modal-body">
        <input class="text form-control" value="{$ instance.description $}" onFocus="if(value==defaultValue){value='';this.style.color='#000'}" onBlur="if(!value){value=defaultValue; this.style.color='#999'}" style="color:#999" ng-model="description" id="description" />
    </div>

    <div class="modal-footer">
        <button class="btn btn-default" ng-click="cancel()">Cancel</button>
        <button class="btn btn-primary" ng-click="confirm(description)">Submit</button>
    </div>
</script>

　　

.js

// edit instance's description
    $scope.editInstance = function(instance){
        var modalInstance = $modal.open({
            templateUrl: 'edit-instance-desc.html',
            controller: EditInstanceDescController,
            resolve: {
                instance: function(){
                    return instance;
                }
            }
        });
        modalInstance.result.then(function(data) {
            if (data['error']){
                growl.error(data['error']);
            }else {
                $state.transitionTo($state.current, $stateParams, {
                    reload: true,
                    inherit: false,
                    notify: true
                });
            }
        }, function(){
        });
    };
    var EditInstanceDescController = function($scope, $modalInstance, growl, CommonHttpService, instance){
        $scope.instance = instance;
        $scope.description = instance.description;
        $scope.cancel = function(){
            $modalInstance.dismiss();
        };
        $scope.confirm = function(description){
            api_url = '/api/user/instance/' + instance.id + '/';
            post_data = {
                "editInstance":description
            };
            CommonHttpService.put(api_url, post_data).then(function(data){
                instance.description = description;
                $modalInstance.close(data);
            }, function(){
                $modalInstance.close(data);
            });
        }
    };