Laravel 5.4 Comma Separated Email Validation (Transforming Data)

EmailRequest.php

<?php

namespace App\Http\Requests;

use Illuminate\Foundation\Http\FormRequest;

class EmailRequest extends FormRequest
{
    /**
     * Determine if the user is authorized to make this request.
     *
     * @return bool
     */
    public function authorize()
    {
        return true;
    }

    /**
     * @inheritDoc
     */
    protected function prepareForValidation()
    {
        $this->replace(['email' => explode(',', $this->email)]);
    }

    /**
     * Get the validation rules that apply to the request.
     *
     * @return array
     */
    public function rules()
    {
        return [
            'email' => 'required|bail|array',
            'email.*' => 'email'
        ];
    }

    public function messages()
    {
        return [
            'email.*' => ':attribute is not a valid email address'
        ];
    }

    public function attributes()
    {
        $attributes = array();
        foreach ($this->email as $index=>$email) {
            $attributes['email.'.$index] = $email;
        }

        return $attributes;
    }
    
    /**
     * This is part of an API which should only
     * return JSON
     */
    public function wantsJson()
    {
        return true;
    }
}

Yep! Not sure how much of this is still valid considering so much has changed since 5.4. Yes, merge would work better here if you've got more than just email coming it.