使用 Laravel 4 验证多个文件上传
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Validating multiple file uploads with Laravel 4
提问by Chris
How do I go about validating an array of uploaded files in Laravel 4? I've set it in the form to allow multiple files, and I've tested that the files exist in the Input::file('files') array. But how do I validate each file?
我如何在 Laravel 4 中验证一系列上传的文件？我在表单中将其设置为允许多个文件，并且我已经测试过这些文件是否存在于 Input::file('files') 数组中。但是我如何验证每个文件？
Here's what I've tried:
这是我尝试过的：
$notesData = array(
'date' => Input::get('date'),
'files' => Input::file('files')
);
// Declare the rules for the form validation.
$rules = array(
'date' => 'Required|date_format:Y-m-d',
'files' => 'mimes:jpeg,bmp,png,pdf,doc'
);
// Validate the inputs.
$validator = Validator::make($notesData, $rules);
// Check if the form validates with success.
if ($validator->passes())
{
// Redirect to homepage
return Redirect::to('')->with('success', 'Validation passed!');
}
// Something went wrong.
return Redirect::to(URL::previous())->withErrors($validator)->withInput(Input::all());
I expected Validator to complain about passing an array of files inside the data array, but it just passed validation even though the file I sent it was an mp3. When I tried to upload multiple files, it gave an unrelated error that the date field is required (though the date field was autopopulated).
我希望 Validator 抱怨在数据数组中传递文件数组，但它只是通过了验证，即使我发送的文件是 mp3。当我尝试上传多个文件时，它给出了一个不相关的错误，即日期字段是必需的（尽管日期字段是自动填充的）。
I'm pretty new to Laravel. What could I do to get this working?
我对 Laravel 很陌生。我该怎么做才能让它发挥作用？
UPDATE: I figured out part of the problem was my upload_max_filesize and post_max_size, which I fixed. I've also tried dynamically adding the files to the arrays as so:
更新：我发现问题的一部分是我的upload_max_filesize 和post_max_size，我修复了。我还尝试将文件动态添加到数组中，如下所示：
$notesData = array(
'date' => Input::get('date')
);
$i=0;
foreach(\Input::file('files') as $file){
$notesData['file'.++$i] = $file;
}
// Declare the rules for the form validation.
$rules = array(
'date' => 'Required|date_format:Y-m-d'
);
for($j=1; $j<=$i; $j++){
$rules['file'.$j] ='mimes:jpeg,bmp,png,doc';
}
But now I'm getting the following error:
但现在我收到以下错误：
Serialization of 'Symfony\Component\HttpFoundation\File\UploadedFile' is not allowed
不允许序列化 'Symfony\Component\HttpFoundation\File\UploadedFile'
And I'm lost. Any idea how to fix this?
我迷路了。知道如何解决这个问题吗？
采纳答案by Chris
Well, I'm not exactly sure what was causing the error, but after playing around a bit with the validator, I figured out that I couldn't just pass all the files at once. Instead, I made a new array that associated each file with keys 'file0', 'file1', etc. Then I passed these to the validator and set rules for each one (using a foreach loop). Then the validator worked as expected. Still, it wasn't flexible enough for my needs and I ended up using a non-laravel solution.
好吧，我不确定是什么导致了错误，但是在使用验证器玩了一会儿之后，我发现我不能一次传递所有文件。相反，我创建了一个新数组，将每个文件与键“file0”、“file1”等相关联。然后我将它们传递给验证器并为每个文件设置规则（使用 foreach 循环）。然后验证器按预期工作。尽管如此，它还是不够灵活，无法满足我的需求，我最终使用了非 Laravel 解决方案。
回答by Nick
I think, this is basically your initial solution. For anybody who's still confused, here's some code that worked for me…
我认为，这基本上是您的初始解决方案。对于仍然感到困惑的任何人，这里有一些对我有用的代码......
// Handle upload(s) with input name "files[]" (array) or "files" (single file upload)
if (Input::hasFile('files')) {
$all_uploads = Input::file('files');
// Make sure it really is an array
if (!is_array($all_uploads)) {
$all_uploads = array($all_uploads);
}
$error_messages = array();
// Loop through all uploaded files
foreach ($all_uploads as $upload) {
// Ignore array member if it's not an UploadedFile object, just to be extra safe
if (!is_a($upload, 'Symfony\Component\HttpFoundation\File\UploadedFile')) {
continue;
}
$validator = Validator::make(
array('file' => $upload),
array('file' => 'required|mimes:jpeg,png|image|max:1000')
);
if ($validator->passes()) {
// Do something
} else {
// Collect error messages
$error_messages[] = 'File "' . $upload->getClientOriginalName() . '":' . $validator->messages()->first('file');
}
}
// Redirect, return JSON, whatever...
return $error_messages;
} else {
// No files have been uploaded
}
回答by Robert ten Wolde
It might not be the direct answer for your question, but you can do a simple validation check on types like this:
它可能不是您问题的直接答案，但您可以对这样的类型进行简单的验证检查：
$file = Input::file('files');
switch($file->getClientMimeType()){
case 'application/pdf':
// upload stuff
break;
}
回答by Stephen Ainsworth
foreach(Request::file('photos') as $key => $value) {
$rules['photos.'.$key]="mimes:jpeg,jpg,png,gif|required|max:10000";
$friendly_names['photos.'.$key]="photos";
}
This worked for me in Laravel 5.2
这在 Laravel 5.2 中对我有用
