如何使用 Laravel 正确上传一组图像

Question

我有这样的表格：

<form action="{{ route('popups.store') }}" method="POST" enctype="multipart/form-data">
    @csrf
    <div id="dynamic_field">
        <label>Date of showing</label>
        <input type="text" id="date" name="datep" class="form-control datepicker" value="" autofocus>
        
        <label for="title" class="control-label">Title</label>
        <input type="text" id="title" name="title" class="form-control" value="" autofocus>

        <label for="link" class="control-label">Link</label>
        <input type="text" id="link" name="linkp[]" class="form-control" value="" autofocus>

        <label for="bio" class="control-label">Text</label>
        <textarea class="form-control" name="bio[]" rows="3"></textarea>

        <label for="filep" class="control-label">Image</label>
        <input type="file" class="form-control-file" id="filep" name="filep[]">

        <button class="btn btn-success" type="submit">Submit</button>

        <a id="add" class="btn btn-info" style="color:white">Add new form</a>
    </div>                                      
</form>

如您所见，我添加了一个带有 id="add" 的链接，用于使用 javascript 动态添加其他表单字段。

这意味着用户可以添加多个图片、文本和链接。这就是为什么我使用filep[]、bio[] 和linkp[] 作为这些表单字段的名称（以便将它们保存为数组）。

然后在控制器处，我添加了这个：

  public function store(Request $request)
    {
        try{
            $data = $request->validate([
                'datep' => 'nullable',
                'title' => 'nullable',
                'linkp' => 'nullable',
                'bio' => 'nullable',
                'filep' => 'nullable',
            ]);
            
            $newPop = Popup::create([
                'datep' => $data['datep'],
                'title' => $data['title']
            ]);
            
            $files = $request->file('filep');

            if($request->hasFile('filep'))
            {
                foreach ($files as $file) {
                    $newImageName = time() . '-' . $request->name . '.' . $request->filep->extension();
                    $request->filep->move(public_path('popups'), $newImageName);
                    Popup::where('id',$newPop->id)->update(['image_path'=>",".$newImageName]);
                }
            }

        }catch (\Exception $e) {
            dd($e);
        }
        
        return redirect()->back();
    }

因此，对于每张图片，我尝试将其移动到 public/popups 文件夹中，然后它应该更新 ID 为 $newPop->id 的表的现有记录。

但它显示了这个错误：

调用数组上的成员函数 extension()

指的是这一行：

$newImageName = time() . '-' . $request->name . '.' . $request->filep->extension();

那么这里出了什么问题？如何使用数组上传多张图片？

Answer 1

你可以试试这个-

    if($files=$request->file('filep')){

    foreach ($files as $key=>$file) {
        $extension = $file->getClientOriginalName();
        $fileName = time().'-' .$request->name.'.'.$extension; // I don't know where did you get this $request->name, I didn't find it on your code.
       
        $created = Popup::create([
            'datep' => $request->datep[$key],
            'title' => $request->title[$key],
            'image_path' => $fileName
        ]);

        if($created){

            // $file->move('popups',$fileName); to store in public folder

            //  If you want to keep files in storage folder, you can use following : -

            Storage::disk('public')->put('popups/'.$location,File::get($file));

            // Dont't forget to run 'php artisan storage:link'
            // It will store into your storage folder and you can access it by Storage::url('file_path)
            

        }else{
            // Your error message.
        }
    }
}