Question

我用laravel 5.3 aaand做一个项目我想用https://erik.cat/projects/Charts/docs/4#installation创建一个图表，我希望它是动态的，标签字段是用户参与其任务的项目标题数组（希望我很清楚）

直到现在我有类似的东西

$idUser = Auth::user()->id;

        $tasksUsed = DB::table('user_task')
            ->join('tasks', 'tasks.id', '=', 'user_task.task_id')
            ->join('projects', 'projects.id', '=', 'tasks.project_id')
            ->select('projects.title')->where('user_task.user_id',$idUser)->get();

           // dd($tasksUsed->toArray());

        $chart = Charts::create('donut', 'morris')
            // ->view('custom.line.chart.view') // Use this if you want to use your own template
            ->title('My nice chart')
            ->labels($tasksUsed->toArray())
            ->values([3,4])
            ->dimensions(300,300)
            ->responsive(false);

它给了我这个错误，我不知道如何解决它

   Method Illuminate\View\View::__toString() must not throw an exception, caught ErrorException: Object of class stdClass could not be converted to string 
...\vendor\consoletvs\charts\resources\views\morris\donut.blade.php)

Answer 1

我认为在donut.blade.php你正在做这样的事情：

{!! $chart !!}

因为$chart是一个对象，所以它不能打印为字符串

Answer 2

 $chart = Charts::create('donut', 'morris')
            // ->view('custom.line.chart.view') // Use this if you want to use your own template
            ->title('My nice chart')
            ->labels($tasksUsed->pluck('title')->toArray())
            ->values([3,4])
            ->dimensions(300,300)
            ->responsive(false);

这是解决方案

方法Illuminate \ View \ View :: __ toString（） - 类stdClass的对象无法转换为字符串

2 个答案: