Laravel validation call `after()` function if `rules()` validates successfully?

Laravel validation call after() function if rules() validates successfully?

Laravel's validation system is a powerful tool for ensuring user input conforms to certain rules before processing it further in your application. The after() method is a custom validation rule that can be used to define validation rules that should only be applied after other rules have passed.

When you call the validate() method on a Laravel request object, it will automatically apply all the rules defined in the rules() method for the given request. If all the rules pass, the validation process is considered successful, and you can then use the after() method to define additional validation rules that should be applied.

Here's an example of how you might use the after() method in Laravel:

use Illuminate\Foundation\Http\FormRequest;
use Illuminate\Validation\Rule;

class UserRequest extends FormRequest
{
    public function rules()
    {
        return [
            'name' => ['required', 'string'],
            'email' => ['required', 'email', Rule::unique('users', 'email')],
            'age' => ['numeric'],
        ];
    }

    public function messages()
    {
        return [
            'name.required' => 'The name field is required.',
            'email.unique' => 'The :attribute has already been taken.',
        ];
    }

    public function after()
    {
        return [
            'age.min' => ['age, 18'],
        ];
    }
}

In this example, the rules() method defines three rules for the name, email, and age fields. The messages() method defines error messages for the name and email rules.

The after() method defines an additional rule for the age field, which checks that the age is at least 18. This rule will only be applied if all the rules defined in the rules() method pass.

So, to answer the question, the after() function is called if the rules defined in the rules() method validate successfully. The after() method can be used to define additional validation rules that should only be applied if the previous rules pass.