Laravel eloquent relationship for finding multilevel array - php

Question

I am a beginner in laravel i want to create a nested api in which one model is connected with another using hasmany relationship here it is:
Model 1:
class Project extends Model
{
use HasFactory;
protected $table = 'projects';
public $timestamps = true;
protected $fillable = [
'title','description'
];
function categorywithqestions()
{
return $this->hasMany('App\Models\questionmd','cat','id');
}
}
Model 2:
class questionmd extends Model
{
use HasFactory;
protected $table = 'questions';
public $timestamps = true;
protected $fillable = [
'title',
'description',
'cat',
'q_type',
];
function relatedquestions()
{
return $this->hasMany('App\Models\relatedquestion','question_id','id');
}
}
Model 3:
class relatedquestion extends Model
{
use HasFactory;
protected $table = 'related_questions';
public $timestamps = true;
protected $fillable = [
'question_id',
'title',
'description',
];
}
and here is controller:
$callback = function($query) {
$query->where('q_type', '=', 'direct_ask');
};
$questionmd = Project::whereHas('categorywithqestions', $callback)
->with(['categorywithqestions' => $callback])->get();
return response()->json(['message' => 'Success', 'status' => 200,'data'=>$questionmd]);
I want to fetch the related questions also inside the "categorywithqestions" how to do it?

Answer 1

From what i see, you can use hasManyThrough helper.
The database structure should be like this.
1 Project hasMany categories
1 Category hasMany questions
projects
id - integer
name - string
categories
id - integer
project_id - integer
name - string
questions
id - integer
category_id- integer
commit_hash - string
on Project model you can do like this
<?php
namespace App\Models;
use Illuminate\Database\Eloquent\Model;
class Project extends Model
{
/**
* Get all of the deployments for the project.
*/
public function deployments()
{
return $this->hasManyThrough(Deployment::class, Environment::class);
}
}
later on in you queries you can make
$questions = Project::all()->load('questions');

Answer 2

Please try this way.
$questionmd = Project::whereHas('categorywithqestions', function($q) {
$q->where('q_type', '=', 'direct_ask');
})->with(['categorywithqestions.relatedquestions'])->get();