In this article, we will see laravel 8 eloquent whereHas() condition. You will learn about wherehas() condition in laravel 8. I will give you simple example of how to use wherehas() condition with laravel 8 eloquent relationship. You can also use the laravel 6, laravel 7, laravel 8, and laravel 9 version.
For wherehas condition in laravel 8 we need two table like users and country and in users tabel add country_id.
So, let's see, laravel 8 wherehas query or laravel 8 wherehas relationship.
Example 1 : Laravel whereHas()
Laravel eloquent whereHas() method works basically the same as has() but it just allows you to specify additional filters for the related model to check.
public function index()
{
$name = 'india';
$users = User::with('country')
->whereHas('country', function ($query) use($name){
$query->where('name', 'like', '%'.$name.'%');
})
->get()
->toArray();
}
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Example 2 : Laravel has()
Laravel eloquent has() method is used to filter the selecting model based on the selected relationship. It works similarly to where method for relations.
use App\Models\User;
$users = User::has('country')->get();
You may also specify an operator and count value to further customize the query:
$posts = Post::has('comments', '>=', 3)->get();
Example : 3
app/Models/User.php
<?php
namespace App\Models;
use Illuminate\Contracts\Auth\MustVerifyEmail;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Foundation\Auth\User as Authenticatable;
class User extends Authenticatable
{
protected $fillable = [
'name',
'email',
'password',
];
public function country()
{
return $this->belongsTo(Country::class);
}
}
app/Models/Country.php
<?php
namespace App\Models;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
class Country extends Model
{
use HasFactory;
}
app/Http/Controllers/UserController.php
<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\Models\User;
class UserController extends Controller
{
public function index()
{
$name = 'india';
$users = User::with('country')
->whereHas('country', function ($query) use($name){
$query->where('name', 'like', '%'.$name.'%');
})
->get()
->toArray();
}
}
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