Right way to handle this situation using Laravel validation - laravel

Question

i am new in Laravel and I would like to have some directive on how to handle this situation.
I have two entities: Ad and Nomination. Ad can have many Nominations.
In a controller i receive two external inputs: [ad_id] and [nomination_id] both required.
What i have to do with these two inputs is:
Check if [ad_id] is an existing Ad entity and his attribute "active" is true.
Check [nomination_id] is an existing Nomination entity.
Only if [ad_id] was an existing Ad and [nomination_id] was an existing Nomination check if this Nomination belongs to this Ad.
Can you show me an example about how to manage this using only validation class?

Answer 1

You can write your validation rules like this
public function rules()
{
return [
'ad_id' => [
'bail',
'required',
Rule::exists('ads')->where(function ($query) use ($request) {
$query->where([
['active' => 1],
['id' => $request->ad_id]
]);
}),
],
'nomination_id' => [
'bail',
'required',
Rule::exists('nominations')->where(function ($query) use ($request) {
$query->where([
['ad_id' => $request->ad_id],
['id' => $request->nomination_id]
]);
}),
],
];
}
Assuming you have ads and nominations are tables name and primary key field is id and ad_id as foreign key in nominations table.

Answer 2

It's pretty straightforward - you can write validation rules just as you listed them in your question:
$validator = Validator::make($request->only('ad_id', 'nomination_id'), [
'ad_id' => 'required|exists:ads,id,active,1',
'nomination_id' => 'required|exists:nominations,id,ad_id,' . $request->ad_id,
]);
if ($validator->fails()) {
...
}

Answer 3

$inputAd = <some_value>;
$inputNomination = <some_value>;
$nomination = Nomination::where(['id' => $inputNomination])->with(['ads'])->first();
if(!$nomination || !($nomination->ad_id == $inputAd)) {
// not the same
}
// same

Answer 4

To validate the ad_id and nomination_id, you can use laravel in rule.
FormRequest Class
public function rules()
{
return [
'ad_id' => [
'required',
Rule::in(Ad::where('active', true)->pluck('id')->toArray()),
],
'nomination_id' => [
'required',
Rule::in(Nomination::where('id', $this->nomination_id)->where('ad_id', $this->ad_id)->pluck('id')->toArray()),
],
];
}
The Rule::in(Ad::where('active', true)->pluck('id')->toArray()), rule will check if the ad_id is present in the array of ids of Ad which have active field is true.
The Rule::in(Nomination::where('id', $this->nomination_id)->where('ad_id', $this->ad_id)->pluck('id')->toArray()), rule will check if the nomination_id is present in the array of ids of Nomination which is related to Ad.