Laravel：更新数据时在 null 上调用成员函数 getClientOriginalName()

Posted 2023-03-22

【中文标题】Laravel：更新数据时在 null 上调用成员函数 getClientOriginalName()

【英文标题】：Laravel : Call to a member function getClientOriginalName() on null when Update Data

【发布时间】：2021-11-25 17:58:51

【问题描述】：

我将更新其包含图像的数据，然后当我发送更新时出现错误调用成员函数 getClientOriginalName()

这是我的控制器

 public function updateBook(Request $request, $id)
    
    $book =   DB::table('books')->where('id',$id);
    $old = $book->select('images');

    $ChecK = 0;
    $file = var_dump($request->file('images')->getClientOriginalName());
    $filename = time().$file;
    $path = public_path('/Uploads');
    
    if($request->hasFile('images'))
        $file = $request->file('images');
        $file->move($path, $filename);
        Storage::delete($old);
        $ChecK = 1;
    
    else 
        dd('Request Hash No File!');
    
    $data = [
        'name'=> $request->input('bookName'),
        'year'=> $request->input('tahunT'),
        'author'=> $request->input('author'),
        'summary'=> $request->input('Summary'),
        'publisher'=> $request->input('publishers'),
        'pageCount' => $request->input('pageCount'),
        'readPage'=> $request->input('ReadPage'),
        'finished' => '$pageCount' == '$readPage' ? true : false,
        'reading' => '$readPage' > 0 ? true : false,
        'updatedAt'=> new DateTime()
    ];
    if( $ChecK == 1)
        $data = ['images' => $filename];
        $book->update($data);
        return redirect('home')->with('status', 'update succesfully'); 
    
    else 
        $data = ['images' => $old];
        $book->update($data);
        return redirect('home')->with('status', 'Update with old image '); 
    

这是视图

   <div class="card-body">
                @if (session('status'))
                    <div class="alert alert-success" role="alert">
                         session('status') 
                    </div>
                @endif
                @foreach ($toEdit as $dt)
                <form class="row g-3" enctype="multipart/form-data" method="POST" action=" route('update', $dt->id) " value="PUT">
                     csrf_field() 
                    <div class="col-md-6">
                        <label for="bookName" class="form-label">Nama Buku:</label>
                        <input type="text" class="form-control" name ="bookName"id="bookName" value=" ($dt->name) ">
                    </div>
                    <div class="col-md-3">
                        <label for="tahunT" class="form-label">Tahun Terbit : </label>
                        <input type="number" class="form-control" name="tahunT" id="tahunT" value=" ($dt->year) ">
                    </div>
                    <div class="col-md-3">
                        <label for="author" class="form-label">Author : </label>
                        <input type="text" class="form-control" name="author" id="author" value=" ($dt->author) ">
                    </div>
                    <div class="col-md-6">
                        <label for="publishers" class="form-label">Publisher : </label>
                        <input type="text" class="form-control" name="publishers" id="publishers" value=" ($dt->publisher) ">
                    </div>
                    <div class="col-md-3">
                        <label for="pageCount" class="form-label">Page Count :</label>
                        <input type="number" class="form-control" name="pageCount" id="pageCount" value=" ($dt->pageCount) ">
                    </div>
                    <div class="col-md-3">
                        <label for="ReadPage" class="form-label">Read Page :</label>
                        <input type="number" class="form-control" name="ReadPage" id="ReadPage"value=" ($dt->readPage) ">
                    </div>
                    <div class="col-12">
                        <label for="Summary" class="form-label">Summary :</label>
                        <textarea class="form-control" name="Summary" id="Summary"> ($dt->summary) </textarea>
                    </div>
                    <div class="col-md-12">
                        <label for="images" class="form-label">Book Image :</label>
                        <input type="file" class="form-group" name="images">
                        <br>
                        <img src=" asset('Uploads/'.$dt->images) " widht="300px"/>
                        <br>
                    </div>
                    <div class="col-12">
                        <button type="submit" class="btn btn-primary">Update</button>
                    </div>
                </form>
                @endforeach
            </div>

在这里，我会更新数据，如果用户想要更改图像，那么图像将被更新，如果没有，图像使用旧图像。它与其他输入相同。但是，当我尝试上传新的时，错误 Call to a member function getClientOriginalName() 发生了。 你对此有什么建议吗？我已经添加了代码enctype="multipart/form-data" 和var_dump()，但错误是一样的。谢谢你:)

【参考方案1】：

您必须通过条件检查您的image 是否为null，以避免出现此错误。

尝试类似：

if ( isset($request->file('images')) != null ) 
    $ChecK = 0;
    $file = $request->file('images')->getClientOriginalName();
    $filename = time().$file;
    $path = public_path('/Uploads');

//..

【参考方案2】：

只需添加一个简单的条件：

If($request->file('image')) 
  ...
$request->images->getClientOriginalNe();
.....

【讨论】：

您好，这段代码运行良好，谢谢