Validate Laravel Nested Rules in Array - arrays

Question

I'm with Laravel and I want to write elegant validation rules :) With this Framework its really easy, but I don't know how to approach this when facing 1:n relationships.
I have two Resources, User and Contact. An User can have multiple Contacts.
So, I want a Form where you can fill all User's fields AND all Contact's information.
To do that, I would like to write a Request like this:
UserRequest:
public function rules()
return [
'name' => 'required|string',
'email' => 'required|email|unique:exists:users,id',
'contacts' => 'array',
'contacts.*' => new ContactRequest() // This is the problem
]
My question is: How can I apply this type of validation? Specifically when using array, how can I make a Modular Validation to apply validations of nested Resources? Or should I develop a ContactRule instead?
Edit:
I want that front end send form like this:
` // POST: users
{
'name': 'UserName',
'email': 'user#mail.com'
'contacts': [
[
'email' => 'contac_1#mail.com',
'contact_type_id => 1
],
[
'email' => 'contac_2#mail.com',
'contact_type_id => 2
],
}
`
Thats all,
Thx!

Answer 1

We have an API with 100's of results in each request or perhaps post/patch.
We still use:
'data.relationships.users.data.*.id' => [
'string',
'unique:api_groups,name,' . ($this->route('group')->id ?? 0),
]
So for you
'contacts.*.email' => 'required|email|unique:exists:users,id'
Works perfectly. It doesn't get more complex or anything.