# Override Core Model

# Introduction

Bagisto utilizes Concord, a Laravel extension, for building modules on top of Laravel's built-in service providers. Concord introduces the concept of model proxies, which allow you to override and extend core models in a modular way.

Concord requires the existence of an interface, such as Product, which serves as a contract that can be bound to a concrete class using Concord's registerModel() method.

By default, the Models\Product class is bound to the Contracts\Product interface within the module. If you want to extend or override this class, you can use Concord's registerModel() method.

The registerModel() method handles the binding of the interface and implementation in Laravel's service container, enabling you to easily type-hint the interface for automatic injection.

For more details, you can visit the Concord GitHub repository (opens new window) or refer to the Concord documentation (opens new window).

# Overriding a Model Class

  • In Concord modules, an interface is typically defined for each Eloquent model. If you wish to override a model, you can instruct Concord to use another class for that interface. Here's an example:

    <?php

namespace Webkul\Blog\Providers;

use Illuminate\Support\ServiceProvider;

class BlogServiceProvider extends ServiceProvider
{
    /**
     * Bootstrap any application services.
     *
     * @return void
     */
    public function boot()
    {
        //...
        
        $this->app->concord->registerModel(
            \Webkul\Product\Contracts\Product::class, \App\Http\Product::class
        );
    }
}

  • In the code above, the registerModel() method accepts two parameters:

    • The first parameter specifies the path to the interface (contract) you want to override.
    • The second parameter specifies the path to the model class that will override the default implementation.

  • The model class you're overriding must extend your specified model path, as shown in the example below:

    <?php

namespace App\Http;

use Webkul\Product\Models\Product as ProductBaseModel;

class Product extends ProductBaseModel
{
    //
}

By following this approach, you can override core models in Bagisto using Concord's module system.

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