I'm trying to setup validation rule with condition but have no idea how to do following:
In my form I have title_url (array for multiple language versions). I want to have unique title_url but only when module_cat_id in the form has same value as existing rows in DB.
This is my rule:
'title_url.*' => 'required|min:3|unique:modules_cat_lang,title_url'
Any ideas how to solve this?
You can define your custom similar to code below:
\Validator::extend('custom_validator', function ($attribute, $value, $parameters) {
foreach ($value as $v) {
$query = \DB::table('modules_cat_lang') // use model if you have
->where('title_url', $v)
->where('module_cat_id', \Input::get('module_cat_id'));
if ($query->exists()) {
return false;
}
}
});
'title_url.*' => 'required|min:3|custom_validator'
Read more here https://laravel.com/docs/5.3/validation#custom-validation-rules .
If you want to add your own custom validation logic to the existing laravel validator then You can use after hooks. Please have a look at the below examples.
Reference : https://laravel.com/docs/8.x/validation#adding-after-hooks-to-form-requests
Example 1(Without Parameter)
$validator->after(function ($validator) {
if ('your condition') {
$validator->errors()->add('field', 'Something went wrong!');
}
});
Example 2(With Parameter) // Here you can pass a custom parameter($input)
$validator->after(function ($validator) use ($input) {
if ($input) {
$validator->errors()->add('field', 'Something went wrong!');
}
});
