File upload mime-type validation with Laravel 4
file-upload, laravel, laravel-4, mime-types, php
Solution
Edit
Built-in validator was still considering some mp3's as application/octet-stream, wether you converted the original file with this or that software.
I finally used the MimeReader class by user Shane, which totally works. I'm still wondering why is it so hard to detect a right mime type though.
I implemented it as a validator in Laravel:
- Move `MimeReader.phps` in `app/libraries/MimeReader.php` (watch the extension)
Extend the Laravel `Validator` (I put it in my `BaseController` constructor)
Validator::extend('audio', function($attribute, $value, $parameters)
{
$allowed = array('audio/mpeg', 'application/ogg', 'audio/wave', 'audio/aiff');
$mime = new MimeReader($value->getRealPath());
return in_array($mime->get_type(), $allowed);
});
- Add your error message in `app/lang/[whatever]/validation.php` (in my case, the key is `audio`)
- I can now use `audio` as a rule ! Example: `'file' => 'required|audio'`, where `file` refers to `Input::file('file')`
Laravel was considering `audio/mpeg` files to be `.mpga` and not `.mp3`. I corrected it in `MimeTypeExtensionGuesser.php` (in the Symfony library), along with `audio/ogg` that were considered as `.oga`. Maybe the audio mime-type depends on what software encoder was used.
Other method is to bypass the validator and check the mime-type directly into the controller using `Input::file('upload')->getMimeType()` like Sheikh Heera said.
Problem
When I upload a well-formed MP3 file, Laravel 4 tells me it's not `audio/mp3` but `application/octet-stream`, which makes this validation fails: ``` $validator = Validator::make( array('trackfile' => Input::file('trackfile')), array('trackfile' => 'required|mimes:mp3') ); if($validator->fails()) return 'doesn\'t works because mime type is '.Input::file('trackfile')->getMimeType(); else return 'it works!'; ``` Why doesn't it upload the file as an `audio/mp3` file ? (I already added `'files' => true` to the form declaration)