确定Laravel 5中是否存在文件

Question

目标:如果文件存在,请加载文件,否则加载default.png.

---

我试过了

  @if(file_exists(public_path().'/images/photos/account/{{Auth::user()->account_id}}.png'))
    <img src="/images/photos/account/{{Auth::user()->account_id}}.png" alt="">
  @else
    <img src="/images/photos/account/default.png" alt="">
  @endif

---

结果

它保持加载我的默认图像,而我100%确定1002.png存在.

如何正确检查该文件是否存在？

Answer 1

无论您在哪里,都可以尝试减少if语句数量.例如,我会做以下事情:

// User Model
public function photo()
{
    if (file_exists( public_path() . '/images/photos/account/' . $this->account_id . '.png')) {
        return '/images/photos/account/' . $this->account_id .'.png';
    } else {
        return '/images/photos/account/default.png';
    }     
}

// Blade Template
<img src="{!! Auth::user()->photo() !!}" alt="">

使您的模板更清洁,使用更少的代码.您也可以在此方法上编写单元测试来测试您的陈述:-)

Answer 2

使用"File ::"检查文件是否存在于操作中,并将resut传递给视图

$result = File::exists($myfile);

Answer 3

解

      @if(file_exists( public_path().'/images/photos/account/'.Auth::user()->account_id.'.png' ))
        <img src="/images/photos/account/{{Auth::user()->account_id}}.png" alt="">
      @else
        <img src="/images/photos/account/default.png" alt="">
      @endif

Answer 4

在Laravel 5.5中，可以exists在存储外观上使用该方法：

https://laravel.com/docs/5.5/filesystem

$exists = Storage::disk('s3')->exists('file.jpg');

您可以使用三元表达式：

$file = ($exists) ? Storage::disk('s3')->get('file.jpg') : 
         Storage::disk('s3')->get('default.jpg');

Answer 5

@if(file_exists('uploads/users-pic/'.auth()->user()->code_melli.'.jpg'))

    <img src="{{'/uploads/users-pic/'.auth()->user()->code_melli.'.jpg'}}"

class="img-circle" alt="{{auth()->user()->name}}" width="60" height="60">

@else
    <img src="/assets/images/user-4.png" width="60" height="60" class="img-circle img-corona" alt="user-pic" />
@endif

正如您在上面的代码中看到的，当您想检查图像时，不要在第一个路径中使用“/”

 @if(file_exists('uploads/users-pic/'.auth()->user()->code_melli.'.jpg'))