Create custom validation error messages in CodeIgniter4

Question

How to create a custom error message for custom validation. I'm using codeIgniter4

Well I'm new to CI4 and I created a custom validation file using Spark command ./spark make:validation It works but the problem is I still don't know how The error message can also be customized, for example when I try to validate the date 05-06-2022 the message is Validation.isWeekday and I want it to say something meaningful like the date is not a weekday . < /p>

This is what my verification looks like

namespace App\Validation;

class CustomDateValidation
{
    public function isWeekday(string $date): bool
    {
        return date("N", strtotime($date)) < 6;
    }
}

My controller function looks a bit like this

if($this-validate(['date'=>'required|isWeekday'])){
...
}

Answer 1

You can pass an array of options for each field you want to validate, not just the rule string:

if($this-validate([
  'date'=> [
    'rules' => 'required|isWeekday',
    'errors' => [
       'required' => 'The date field is required',
       'isWeekday' => 'The date must be a weekday'
    ],
  ])){
...
}