Nested JSON with Eloquent - php

Question

I'm new in Laravel and I want to create an API . I just want to know on how to build a JSON response like this
JSON RESPONSE:
[
{ //THIS IS MODEL FOR Industry
id: "1",
value: "Accounting / Finance
sectors: [ //THIS IS MODEL FOR Sectors
{
id: "1", //sector_id AS id
value: "Accounting"
},
{
id: "3",
value: "Finance"
}
],
id: "2",
value: "Audit / Tax"
sectors: [
{
id: "4",
value: "Audit"
},
{
id: "5",
value: "Tax"
}
]
}
]
The database in my industries contains
| id | value |
| 1 | Accounting/Finance |
| 2 | Audit/Tax |
while my database in industry_sectors contains
| sector_id | industry_id | name |
| 1 | 1 | Accounting |
| 3 | 1 | Finance |
| 4 | 2 | Audit |
| 5 | 2 | Tax |
Below are my partial code for models.
MODELS
Industries.php
namespace App\Models;
use Illuminate\Notifications\Notifiable;
use Illuminate\Foundation\Auth\User as Authenticatable;
class Industries extends Authenticatable
{
use Notifiable;
/**
* The attributes that are mass assignable.
*
* #var array
*/
public $primaryKey = 'id';
public $table = 'industries';
public $timestamps = false;
protected $guarded = [];
}
IndustrySectors.php
namespace App\Models;
use Illuminate\Notifications\Notifiable;
use Illuminate\Foundation\Auth\User as Authenticatable;
class IndustrySectors extends Authenticatable
{
use Notifiable;
/**
* The attributes that are mass assignable.
*
* #var array
*/
public $primaryKey = 'sector_id';
public $table = 'industry_sectors';
public $timestamps = false;
protected $guarded = [];
}
I want to use the API as a GET method and this is my partial code but it just print the whole database in json in Industry Sectors table.
public function getIndustry(){
$flight = IndustrySectors::all();
return response()->json($flight);
}

Answer 1

You need to declare the relationship between industries and industry_sectors first by declaring it
// in Industries.php
public function industrySectors() {
return $this->hasMany('App\IndustrySectors');
}
// in IndustrySectors.php
public function industries() {
return $this->belongsTo('App\Industries');
}
Also be sure to read Laravel Eloquent Relationship Documentation carefully