Laravel One to One Eloquent Relationship Tutorial

Hi Dev,

Today,I will learn you how to use hasone relationship in laravel. This is a short guide on laravel if hasone relationship. We will use how to use hasone relationship in laravel. Here you will learn how to use hasone relationship in laravel. We will use how to use if hasone relationship in laravel. Let's get started with how to hasone relationship use in laravel.

Here i will give you many example how you can check hasone relationship in laravel.

Create Migrations:

Now we have to create migration of "Products" and "ProductCategories" table. so let's create like as below:

Products table migration:

<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

class CreateProductsTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('Products', function (Blueprint $table) {
            $table->id();
            $table->string('title');
            $table->string('sub_title');
            $table->integer('product_category_id');
            $table->text('description');
            $table->string('image');
            $table->string('client');
            $table->date('date');
            $table->timestamps();
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists('Products');
    }
}
?>

ProductCategories table migration:

<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

class CreateProductCategoriesTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('Product_categories', function (Blueprint $table) {
            $table->id();
            $table->string('name');
            $table->timestamps();
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists('Product_categories');
    }
}
?>

Create Models:

Here, we will create Product and ProductCategory table model. we will also use "hasOne()" for relationship of both model.

Product Model:

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class Product extends Model
{
    use HasFactory;

    public $table = 'Products';
   
    public $fillable = ['title','sub_title','product_category_id','description'];

    /**
        * Write code on Method
        *
        * @return response()
    */
    public function ProductCategory(){
        return $this->hasOne(ProductCategory::class, 'id', 'product_category_id');
    }
}
?>

ProductCategory Model:

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class Product_Category extends Model
{
    use HasFactory;

    public $table = 'Product_categories';
   
    public $fillable = ['name'];
}
?>

Retrieve Records:

$ProductCategory = Product::find(1)->ProductCategory;
dd($ProductCategory);

$Product = ProductCategory::find(1)->Product;
dd($Product);

Create Records:

$Product = Product::find(1);
 
$ProductCategory = new ProductCategory;
$ProductCategory->ProductCategory->name = 'Mobile';
 
$Product->ProductCategory()->save($ProductCategory);

$ProductCategory = ProductCategory::find(1);
 
$Product = Product::find(10);
 
$ProductCategory->Product()->associate($Product)->save();

It will help you....