How to validate a file type in laravel

Question

I need to validate that a user only uploads a .jpg

I have the following request class. I made the image required but don't know how to check that it is only .jpg

public function rules()
{
    return [
        'name' => 'required|min:3',
        'sku' => 'required|min:5|unique:products',
        'description' => 'required|min:20',
        'price' => 'required',
        'image' => 'required'
    ];
} 

Answer 1

Does it have to just be .jpg? If so then something like:

'image' => 'required|mimes:jpeg'

Documentation: http://laravel.com/docs/5.1/validation#rule-mimes

If it can be any type of image, then:

'image' => 'required|image'

Documentation: http://laravel.com/docs/5.1/validation#rule-image

Answer 2

laravel 8

\request ()->validate(['photo' => 'mimes:jpg,bmp,png']);

official documentation link

Answer 3

You can create new validation rule:

<?php
declare(strict_types=1);

namespace App\Rules;

use Illuminate\Contracts\Validation\Rule;
use Illuminate\Http\UploadedFile;

class FileType implements Rule
{
    public function __construct(protected array $acceptedTypes)
    {
    }

    /**
     * @param $attribute
     * @param UploadedFile $value
     * @return bool
     */
    public function passes($attribute, $value): bool
    {
        try {
            $mimeType = $value->getMimeType();
            preg_match('/^(.*)\//', $mimeType, $res);
            $type = $res[1];

            return in_array($type, $this->acceptedTypes);
        } catch (\Throwable) {
            return false;
        }
    }
    public function message(): string
    {
        $types = implode(', ', $this->acceptedTypes);
        return 'File type invalid, accepted types: ' . $types;
    }
}


'file' => [
    'required',
    'file',
    'max:50240',
     new FileType(['audio', 'video'])
 ]