Laravel 5.6：检查文件是否存在
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Laravel 5.6:Check if a file exists
提问by Hammadr097
So i'm creating user profiles in laravel and want to show a generic profile image if the user hasn't uploaded his/her own profile image with the following if/else condition:
因此，我正在 laravel 中创建用户个人资料，并希望在用户未使用以下 if/else 条件上传他/她自己的个人资料图片时显示通用个人资料图片：
@if(false)
<img src="img/uploads/avatars/{{$user->Uname}}" class="img-thumbnail" alt="{{$user->Uname}}'s Profile Pic">
@else
<img src="img/uploads/avatars/{{$user->avatar}}" class="img-thumbnail" alt="{{$user->Uname}}'s Profile Pic">
@endif
I need to check if a file exists with the same name as the user-name of a user (uploads create a file with that name in the above specified location).The false is where the condition for file existence should be but i'm facing 2 problems that i haven't found in other solutions:
我需要检查是否存在与用户的用户名同名的文件（上传会在上面指定的位置创建一个具有该名称的文件）。错误是文件存在的条件应该是，但我是面临着我在其他解决方案中没有发现的 2 个问题：
The file exists in a path outside of storage. (it exists in public folder)
I want to do it without the use of storage or file facades.
该文件存在于存储外部的路径中。（它存在于公共文件夹中）
我想在不使用存储或文件外观的情况下做到这一点。
Note: Following changes have been made to filesystems.php
注意：对 filesystems.php 进行了以下更改
'local' => [
'driver' => 'local',
'root' => storage_path('../public/img/uploads/'),
]
Edit: The problem is similar to the one mentioned here but this solution didn't work for me:Determining If a File Exists in Laravel 5
编辑：问题与此处提到的问题类似，但此解决方案对我不起作用：确定 Laravel 5 中是否存在文件
Edit#2: Final Working Code:
编辑#2：最终工作代码：
@if(is_file("img/uploads/avatars/{$user->Uname}"))
<img src="img/uploads/avatars/{{$user->Uname}}" class="img-thumbnail" alt="{{$user->Uname}}'s Profile Pic">
@else
<img src="img/uploads/avatars/default.jpg" class="img-thumbnail" alt="{{$user->Uname}}'s Profile Pic">
@endif
回答by Tpojka
You should check if file exists
您应该检查文件是否存在
@if(is_file('/path/to/file.ext'))
// code
@else
// code
@endif
You could use laravel helpers, something like:
您可以使用 Laravel 助手，例如：
@if(is_file(public_path('img/uploads/avatars/' . $user->Uname)))
//<img src="{{ asset('img/uploads/avatars' . $user->Uname) }}">
回答by Sabyasachi Patra
You don't have your file extension in your image src.
您的图像 src 中没有文件扩展名。
@if(file_exists('img/uploads/avatars/'.$user->Uname.'png'))
<img src="img/uploads/avatars/{{$user->Uname}}.png" class="img-thumbnail" alt="{{$user->Uname}}'s Profile Pic">
@else
<img src="img/uploads/avatars/{{$user->avatar}}.png" class="img-thumbnail" alt="{{$user->Uname}}'s Profile Pic">
@endif
Use '.png' or '.jpg' as per your needs.
根据您的需要使用“.png”或“.jpg”。
