How to apply validation on any single field having same name Laravel? - php

Question

I have a project that consists of multilingual functionality. So I'm creating a form that consists of multiple languages to be inserted if User wants.
But validation should be like if any of the fields having the same name consist value then leave rest one like as
Form
<form>
<input type="text" name="name[EN]" />
<input type="text" name="name[AR]" />
<input type="text" name="name[FR]" />
<input type="submit" value="submit" />
</form>
Now I want to validate that if any one of these fields have value then submit form else throw a validation
So I've tried Laravels required_if, but it didn't work.
public function rules()
{
return [
'name.*' => 'required_if:name,1',
];
}
So how to make such validation in laravel

Answer 1

I've searched but could not find a built in way of doing this. You can create your own rule using
php artisan make:rule NonEmptyFiltered
and then define the rule as:
class NotEmptyFiltered implements Rule {
public function passes($attribute, $value) {
return !empty(array_filter($value));
}
public function message() {
return ':attribute must have at least one non-null element';
}
}
You can then do:
public function rules()
{
return [
'name' => [ new NonEmptyFiltered() ]
];
}

Answer 2

I believe this should do the trick:
$rules = [
'name.EN' => 'required_without_all:name.AR,name.FR',
'name.AR' => 'required_without_all:name.EN,name.FR',
'name.FR' => 'required_without_all:name.EN,name.AR',
];
The rule makes the field to be required if the other fields are empty https://laravel.com/docs/5.6/validation#rule-required-without-all.