Merge FormRequest rules - laravel

Question

This question is based on this thread: Merge 2 rules FormFequest for validate an update and store action in laravel5.5
Context: Let's suppose I have these 2 requests and I want to merge the SocialMediaFormRequest rules in ReadersFormRequest rules.
ReadersFormRequest
class ReadersFormRequest extends FormRequest
{
public function rules(SocialMediaFormRequest $social)
{
$mediaRules = $social->rules();
$rules = [
'first_name'=>'required',
'last_name'=>'required',
'birthday'=>'required',
'region'=>'required',
'photo_url'=>'required',
'support'=>'required',
'riwayas_id'=>'required',
'description'=>'required',
];
return array_merge($rules,$mediaRules);
}
}
SocialMediaFormRequest
class SocialMediaFormRequest extends FormRequest
{
public function rules()
{
return [
'url'=>'required|url',
'title'=>'required'
];
}
}
Form that I received
first_name: "example"
last_name: "example"
birthday: 2022-06-13
region: somewhere
photo_url: "https:XXX"
support: false
riwayas_id: 1
description: ""
media.url: "https:YYY"
media.title: "stackoverflow"
Question: How can I only pass the argument media.XXX in my form SocialMediaFormRequest?

Answer 1

You can use prepareForValidation() method in the form request to sanitize the inputs : https://laravel.com/docs/9.x/validation#preparing-input-for-validation
So, if in SocialMediaFormRequest you receive the full request you can only get the required fields like that:
public function prepareForValidation()
{
$this->replace([
'url' => $this->url ?? ($this->media['url'] ?? null),
'title' => $this->title ?? ($this->media['title'] ?? null),
]);
}
Also, in ReadersFormRequest when you inject the other request or resolve it from the container it doesn't work correctly, so it is better to get the rules like that:
public function rules()
{
$mediaRules = (new SocialMediaFormRequest())->rules();
and in order to access the media.* attributes in ReadersFormRequest you can again use prepareForValidation:
public function prepareForValidation()
{
$this->merge([
'url' => $this->media['url'] ?? null,
'title' => $this->media['title'] ?? null,
]);
}