In this article, we will see that laravel 9 has many through relationship example. hasManyThrough relationship is difficult to understand compared to other relationships. You can use hasManyThrough relationship laravel 6, laravel 7 and laravel 8. The has-many-through relationship provides a convenient way to access distant relations via an intermediate relation.
So, let's see has many through in laravel 9, has many through pivot laravel 9, hasmanythrough laravel 9 example, laravel 9 has many through.
For example, a categories is connected with products and products connected with orders, then we can access all orders connected with a specific categories. So, simply you can access or get data using intermediate model relation using hasManyThrough in laravel 9.
Now, we will create categories, products and orders table. categories table connected with products and products table connected with orders table like below screenshot and we also create migration and model for all table and retrieve data using model.
Categories Table :
Schema::create('categories', function (Blueprint $table) {
$table->increments('id');
$table->string('name');
$table->timestamps();
});
Products Table :
Schema::create('products', function (Blueprint $table) {
$table->increments('id');
$table->integer('categories_id')->unsigned();
$table->timestamps();
$table->foreign('categories_id')->references('id')->on('categories')->onDelete('cascade');
});
Orders Table :
Schema::create('orders', function (Blueprint $table) {
$table->increments('id');
$table->integer('product_id')->unsigned();
$table->timestamps();
$table->foreign('product_id')->references('id')->on('products')->onDelete('cascade');
});
Now, we will create categories model and define relationship on model.
Category Model :
<?php
namespace App\Models;
use Illuminate\Database\Eloquent\Model;
class Category extends Model
{
public function order()
{
return $this->hasManyThrough(Order::class, Product::class);
}
}
The first argument passed to the hasManyThrough
method is the name of the final model we wish to access, while the second argument is the name of the intermediate model.
Though the Order model table does not contain category_id column, the hasManyThrough relation we can access to $categories->orders like this.
Now, retrive record using intermediate model through like below code example.
$category = Category::find(1);
dd($category->order);
You might also like :
In this article, we will see how to import and export Excel & CSV files in laravel 10. Here, we will learn about lar...
Mar-08-2023
A user-friendly and dynamic interface is paramount to engaging users on your site. Angular is one of the most powerful a...
Oct-04-2023
In today's digital age, where security is paramount, user authentication has become a cornerstone concern for web ap...
Aug-21-2023
In this example we will see how to convert html to pdf using javaScript. PDF file format is very useful to dow...
Aug-23-2021