Laravel Eloquent Join With Relationships

#Laravel Eloquent JoinWith

Laravel Eloquent Join With is a package that simplifies performing efficient database joins on existing Eloquent relationships of type HasOne and BelongsTo. By utilizing these relationships, JoinWith optimizes performance by executing a single query instead of the two separate queries typically required with the standard with method. This translates to faster and more efficient data retrieval.

#Installation

You can install the package via composer:

composer require msafadi/laravel-eloquent-join-with

#Usage

There are two ways to use Laravel JoinWith in your application models:

#1. Use JoinWith Trait

Include the JoinWith trait provided by the package in your application models:

<?php
 
namespace App\Models;
 
use Illuminate\Database\Eloquent\Model;
use Safadi\EloquentJoinWith\Database\Concerns\JoinWith;
 
class User extends Model
{
    use JoinWith;
 
    // ... other model properties and methods
}

With the trait included, you can then use the joinWith method directly on your model queries.

#2. Extend the Model Class

Alternatively, you can extend your model classes with Safadi\EloquentJoinWith\Database\Eloquent\Model:

<?php
 
namespace App\Models;
 
use Illuminate\Database\Eloquent\Model;
use Safadi\EloquentJoinWith\Database\Eloquent\Model as JoinWithModel;
 
class User extends JoinWithModel
{
    // ... other model properties and methods
}

This approach also grants access to the joinWith method on your model queries.

#Usage Examples

Once you've integrated Laravel JoinWith into your models, you can use the joinWith method on your Eloquent model queries.

The defintion and usage of joinWith is exactly the same as using the standard with method. But it will execute a single query joining the parent model and the realted model tables instead of fetching realted models with executing an extra database query. Here's an example:

$user = User::joinWith('profile')
            ->select('users.id', 'users.name')
            ->first();
 
// This will execute a single query joining the users and profiles tables
// based on the defined HasOne relationship between User and Profile models.

This code retrieves the user information along with the associated profile's avatar in a single query.

As the standard with method, you can also use nested relations:

$user = User::joinWith('profile.country')
            ->first();
 
// This will execute a single query joining the users, profiles, and countries tables
// based on the defined HasOne relationship between User and Profile and between Profile and Country models.

For more complex scenarios, you can pass a closure to the joinWith method to customize the join conditions, similar to the standard with method:

$orders = Orders::joinWith(['user' => function ($query) {
    $query->where('users.status', '=', 'verified');
}])
->get();
 
// This will execute a single query joining orders and users tables
// based on the BelongsTo relationship and the additional where clause.

This example retrieves orders that belongs to a verified user, combining the user and order information in a single query.

#Limitations

• Laravel JoinWith currently works with HasOne and BelongsTo relationships. Support for other relationship types might be added in future versions.
• Specifying which columns of the relationship you would like to retrieve is not supported yet but might be added in future versions.

#Contributing

We welcome contributions to this package! If you'd like to contribute, please feel free to open a pull request.

#License

This package is distributed under the MIT License. Please see the LICENSE file for more information.