laravel后台返回ajax数据

后台模式：

 $array = array('msg'=>'添加失败!','status'=>'false');
 return json_encode($array);

前台显示：

 $.ajax({
                url: "{{url('ucenter/saveTrain')}}",
                type: "post",
                dataType: "json",
                data: {"content": content,"read": read,"trainer":trainer,"time1":time1,"where":where,"result":result,"score":score,'_token': "{{csrf_token()}}"},
                success: function (result) {
                   
                    if(result.status == 'true'){
                        layer.msg(result.msg);
                        location.href = '{{url('ucenter/train')}}';
                    }else{
                        layer.msg(result.msg);
                        return false;
                    }
                },