php 确定 Laravel 5 中是否存在文件
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Determining If a File Exists in Laravel 5
提问by cyber8200
Goal: If the file exist, load the file, else load the default.png.
目标：如果文件存在，则加载文件，否则加载default.png.
I've tried
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
Result
结果
It kept load my defaultimage while I'm 100% sure that 1002.pngis exist.
当我 100% 确定它存在时，它一直加载我的默认图像1002.png。
How do I properly check if that file is exist ?
如何正确检查该文件是否存在？
采纳答案by cyber8200
Solution
解决方案
@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
回答by Lee
Wherever you can, try and reduce the number of ifstatements. For example, I would do the following:
只要有可能，尽量减少if语句的数量。例如，我会执行以下操作：
// 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="">
Makes your template cleaner and uses less code. You can also write a unit test on this method to test your statement as well :-)
使您的模板更干净并使用更少的代码。您还可以对此方法编写单元测试来测试您的语句:-)
回答by Amancho
Check if file exists on action with "File::" and pass the resut to the view
使用 "File::" 检查文件是否存在于操作中并将结果传递给视图
$result = File::exists($myfile);
回答by jOshT
In Laravel 5.5, you can use the existsmethod on the storage facade:
在 Laravel 5.5 中，你可以使用exists存储门面的方法：
https://laravel.com/docs/5.5/filesystem
https://laravel.com/docs/5.5/filesystem
$exists = Storage::disk('s3')->exists('file.jpg');
You could use a ternary expression:
您可以使用三元表达式：
$file = ($exists) ? Storage::disk('s3')->get('file.jpg') :
Storage::disk('s3')->get('default.jpg');
回答by ???? ????? ?????? ???? ? ?????
@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
as you can see in above code when you want to check image don't use '/' at the first of you path
正如您在上面的代码中看到的那样，当您要检查图像时，请不要在第一个路径中使用“/”
@if(file_exists('uploads/users-pic/'.auth()->user()->code_melli.'.jpg'))
回答by ???? ????? ?????? ???? ? ?????
Save the of the file in the database.If the image path exist
将文件保存在数据库中。如果图片路径存在
<?php
$path = "packages/pathoffile/img/media/" . $filename;
$media = isset($media) ? $media : ""; //If media is saved
?>
@if($media == "")
<img src='../packages/defaultimagelocation/assets/img/user.png' />
@else
<img src='../packages/originalmedialocation/img/media{{ $media }}' />
@endif
