ldc-supportweb/app/Http/Requests/Credit/CreateEstimateRequest.php

<?php

namespace App\Http\Requests\Credit;

use App\Models\Credit\Account;
use Illuminate\Foundation\Http\FormRequest;

class CreateEstimateRequest extends FormRequest
{
    /**
     * Determine if the user is authorized to make this request.
     *
     * @return boolean
     */
    public function authorize()
    {
        if (!auth()->check()) {
            return false;
        }
        /** @var \App\Models\User */
        $user = auth()->user();
        return $user->isAdmin() and $user->can('estimate', $this->ticket);
    }

    /**
     * Get the validation rules that apply to the request.
     *
     * @return array
     */
    public function rules()
    {
        /** @var \App\Models\Ticket */
        $ticket = $this->ticket;
        return [
            'amount' => [
                'required', 'numeric', 'gt:0', function ($attribute, $value, $fail) {
                    if ((\floatval($value) * 1000) % 125 !== 0) {
                        $fail("$attribute doit être un multiple de 125 (soit 0.125)");
                    }
                }
            ],
            'credit_account_id' => [
                'required', 'exists:credit_accounts,id',
                function ($attribute, $value, $fail) use ($ticket) {
                    /** @var \App\Models\Credit\Account|null */
                    $account = Account::whereId($value)->first();
                    if ($account and !$ticket->accountIsValidForThisTicket($account)) {
                        $fail("$attribute does not belong to the ticket brand");
                    }
                }
            ]
        ];
    }

    /**
     * Get custom messages for validator errors.
     *
     * @return array
     */
    public function messages(): array
    {
        return [
            'amount' => 'Montant',
            'credit_account_id' => 'Compte'
        ];
    }
}