Laravel unique validation if ID isn't in request - laravel

Question

I want to do some validation for a field. Right now works for unique values, the problem is that on Update I get the same error. So I want to filter the request, if that post request contain ID field then this field shouldn't be unique.
public function rules()
{
return [
'customer_id' => 'required|unique:customers',
];
}

Answer 1

You can use Rule class' unique method for the update method
public function rules()
{
return [
'customer_id' => [
'required',
Rule::unique('customers')->ignore($customer->customer_id),
];
}
Laravel docs: https://laravel.com/docs/8.x/validation#rule-unique
For common rules() function it can be done as
use Illuminate\Validation\Rule;
class CustomerController extends Controller
{
protected function rules($customer)
{
return [
'customer_id' => [
'required',
Rule::unique('customers')->ignore($customer->exists ? $customer->customer_id : null),
];
}
public function store(Request $request)
{
$customer = new Customer;
$request->validate($this->rules($customer));
}
public function update(Request $request, Customer $customer)
{
$request->validate($this->rules($customer);
}
}
In my case I have a single method for store/update and I check If I have an ID or not. Also I added $customer = request()->all(); and ignore($customer['ID'] , that is for my specific case.
Laravel Docs warns against passing user controller request input to the ignore method
For your specific case you can do
$customer = !empty($request->input('ID') ? Customer::findOrFail($request->input('ID')) : new Customer;
//Then pass the customer to the rules()
$validated = $request->validate($this->rules($customer));