Laravel 5.6 文件上传异常：文件未存入storage/app目录

It’s frustrating when the filename is returned successfully but the file doesn’t show up in your storage/app directory—let’s walk through the most common fixes for this Laravel issue:

1. Check Directory Permissions & Existence #

First, ensure the target directory exists and has write permissions for your web server:

• Create the logos directory if it doesn’t exist:

  mkdir -p storage/app/logos
  

• Set proper permissions (adjust the user/group to match your server setup, e.g., www-data for Apache/Nginx):

  chmod -R 755 storage
  chown -R www-data:www-data storage
  

Laravel should create directories automatically, but permission restrictions often block this behavior.

2. Explicitly Specify the Filesystem Disk #

While local is the default storage disk, explicitly defining it in your storeAs call can rule out configuration mismatches:
Update your controller code to:

public function letterOfIntent(Request $request) {
    $fileName = "fileName".time().'.'.$request->fileToUpload->getClientOriginalExtension();
    // Add 'local' as the third parameter to enforce storage in storage/app
    $request->fileToUpload->storeAs('logos', $fileName, 'local');
    return 'success';
}

The local disk is configured to point to storage/app by default in config/filesystems.php.

3. Add Validation to Catch Silent Upload Errors #

You’re currently not validating the file upload, which means you might be getting silent failures (like oversized files) but still returning "success". Add validation to your method:

public function letterOfIntent(Request $request) {
    // Validate the file matches your view's requirements
    $validated = $request->validate([
        'fileToUpload' => 'required|file|max:2048', // Max 2MB as noted in your view
        // Add mimes rules if needed, e.g., 'mimes:pdf,jpg,jpeg,png'
    ]);

    $fileName = "fileName".time().'.'.$request->fileToUpload->getClientOriginalExtension();
    $request->fileToUpload->storeAs('logos', $fileName, 'local');
    
    return 'success';
}

This will throw an error response if the file fails validation, so you’ll know exactly why the upload isn’t working.

4. Debug the Exact Storage Path #

Add logging to confirm where Laravel is attempting to store the file:

public function letterOfIntent(Request $request) {
    if ($request->hasFile('fileToUpload') && $request->file('fileToUpload')->isValid()) {
        $fileName = "fileName".time().'.'.$request->fileToUpload->getClientOriginalExtension();
        $path = $request->fileToUpload->storeAs('logos', $fileName, 'local');
        
        // Log the full absolute path to your Laravel logs (storage/logs/laravel.log)
        \Log::info('File stored at: ' . storage_path('app/' . $path));
        
        return 'success';
    }
    
    return 'Upload failed: No valid file provided';
}

Check your logs to see the exact path Laravel is using—this will tell you if the file is being stored somewhere unexpected.

5. Clean Up Redundant Form Attribute #

Quick note on your view: you have method="post" twice in the form tag. Remove one to clean up your code:

<form method="post" action="/supplier-information/company-officer/letter-of-intent" enctype="multipart/form-data" data-form-method="create">

内容的提问来源于stack exchange，提问作者Martney Acha