Laravel 8 E-Commerce - Admin Create Model, Migration and Relationship for Checkout

In this video, we are going to learn about creating a Model, Migration, and Relationship for Checkout.

So, let's see how we can create a Model, Migration, and Relationship for Checkout.

For Checkout, we need four tables: Order, OrderItem, Shipping, and Transaction.

So, let's create these tables' models and migrations one by one.

First, switch to the command prompt and run the following command:

php artisan make:model Order –m

php artisan make:model OrderItem –m

php artisan make:model Shipping –m

php artisan make:model Transaction –m

Now, let's open the create_orders_table migration and add the following code:

<?php

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

class CreateOrdersTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('orders', function (Blueprint $table) {
            $table->id();
            $table->bigInteger('user_id')->unsigned();
            $table->decimal('subtotal');
            $table->decimal('discount')->default(0);
            $table->decimal('tax');
            $table->decimal('total');
            $table->string('firstname');
            $table->string('lastname');
            $table->string('mobile');
            $table->string('email');
            $table->string('line1');
            $table->string('line2')->nullable();
            $table->string('city');
            $table->string('province');
            $table->string('country');
            $table->string('zipcode');
            $table->enum('status',['ordered','delivered','canceled'])->default('ordered');
            $table->boolean('is_shipping_different')->default(false);
            $table->timestamps();
            $table->foreign('user_id')->references('id')->on('users')->onDelete('cascade');
        });
    }

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

Next, let's open the create_order_items_table migration and add the following code:

<?php

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

class CreateOrderItemsTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('order_items', function (Blueprint $table) {
            $table->id();
            $table->bigInteger('product_id')->unsigned();
            $table->bigInteger('order_id')->unsigned();
            $table->decimal('price');
            $table->integer('quantity');            
            $table->timestamps();
            $table->foreign('product_id')->references('id')->on('products')->onDelete('cascade');
            $table->foreign('order_id')->references('id')->on('orders')->onDelete('cascade');
        });
    }

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

Then, let's open the create_shippings_table migration and add the following code:

<?php

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

class CreateShippingsTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('shippings', function (Blueprint $table) {
            $table->id();
            $table->bigInteger('order_id')->unsigned();
            $table->string('firstname');
            $table->string('lastname');
            $table->string('mobile');
            $table->string('email');
            $table->string('line1');
            $table->string('line2')->nullable();
            $table->string('city');
            $table->string('province');
            $table->string('country');
            $table->string('zipcode');
            $table->timestamps();
            $table->foreign('order_id')->references('id')->on('orders')->onDelete('cascade');
        });
    }

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

After that, let's open the create_transactions_table migration and add the following code:

<?php

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

class CreateTransactionsTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('transactions', function (Blueprint $table) {
            $table->id();
            $table->bigInteger('user_id')->unsigned();
            $table->bigInteger('order_id')->unsigned();
            $table->enum('mode',['cod','card','paypal']);
            $table->enum('status',['pending','approved','declined','refunded'])->default('pending');            
            $table->timestamps();
            $table->foreign('user_id')->references('id')->on('users')->onDelete('cascade');
            $table->foreign('order_id')->references('id')->on('orders')->onDelete('cascade');
        });
    }

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

Now, open the Order Model and add the following code:

<?php

namespace App\Models;

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

class Order extends Model
{
    use HasFactory;

    protected $table = "orders";

    public function user()
    {
        return $this->belongsTo(User::class);
    }

    public function orderItems()
    {
        return $this->hasMany(OrderItem::class);
    }

    public function shipping()
    {
        return $this->hasOne(Shipping::class);
    }

    public function transaction()
    {
        return $this->hasOne(Transaction::class);
    }
}

Next, open the OrderItem model and add the following code:

<?php

namespace App\Models;

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

class OrderItem extends Model
{
    use HasFactory;

    protected $table = "order_items";

    public function product()
    {
        return $this->belongsTo(Product::class);
    }

    public function order()
    {
        return $this->belongsTo(Order::class);
    }   
    
    public function review()
    {
        return $this->hasOne(Review::class,'order_item_id');
    }
    
}

Then, open the Shipping model and add the following code:

<?php

namespace App\Models;

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

class Shipping extends Model
{
    use HasFactory;

    protected $table = "shippings";

    public function order()
    {
        return $this->belongsTo(Order::class);
    }
}

Finally, open the Transaction model and add the following code:

<?php

namespace App\Models;

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

class Transaction extends Model
{
    use HasFactory;

    protected $table = "transactions";

    public function order()
    {
        return $this->belongsTo(Order::class);
    }
}

We have now created all four models, migrations, and relationships with models.

So, in this way, you can create a Model, Migration, and relationship for Checkout.