Is there any way to validate required field when the requested url contains some parameter?
Assuming you are using Form requsts, you can simple use PHP condition.
public function rules()
{
$rules = []; // here you put some rules
// here you check condition and add some rule when it's true
if (str_contains($this->input('url'), 'something')) {
$rules['some_other_field'] = 'required';
}
return $rules;
}