Laravel Repository

Laravel Repository is a package for Laravel 5.7 which is used to abstract the database layer. This makes applications much easier to maintain.

The main differnece between this project and others is:

• use eloquent model as an entity
• put business logic into eloquent model
• always use repository to persist eloquent model, $repository->save($model);
• don't call $model->save, $model->update, $model->delete, etc... persistence method directly, always use $repository->save($model)

Installation

Run the following command from you terminal:

composer require tlikai/laravel-repository

or add this to require section in your composer.json file:

"tlikai/repository": "^1.0"

then run composer update

Usage

First, create your repository class. Note that your repository class MUST extend Uniqueway\Repositories\Eloquent\Repository and implement model() method

<?php namespace App\Repositories;

use Uniqueway\Repositories\Contracts\RepositoryInterface;
use Uniqueway\Repositories\Eloquent\Repository;

class FilmsRepository extends Repository {

    public function model() {
        return 'App\Film';
    }
}

By implementing model() method you telling repository what model class you want to use. Now, create App\Film model:

<?php namespace App;

use Illuminate\Database\Eloquent\Model;

class Film extends Model {

    protected $primaryKey = 'film_id';

    protected $table = 'film';

    protected $casts = [
        "rental_rate"       => 'float'
    ];
}

And finally, use the repository in the controller:

<?php namespace App\Http\Controllers;

use App\Repositories\FilmsRepository as Film;

class FilmsController extends Controller {

    private $film;

    public function __construct(Film $film) {

        $this->film = $film;
    }

    public function index() {
        return \Response::json($this->film->all());
    }
}

Available Methods

The following methods are available:

Uniqueway\Repositories\Contracts\RepositoryInterface

public function all($columns = array('*'))
public function lists($value, $key = null)
public function paginate($perPage = 1, $columns = array('*'))
public function save($model)
public function delete($model)
public function find($id, $columns = array('*'))
public function findBy($field, $value, $columns = array('*'))
public function findAllBy($field, $value, $columns = array('*'))
public function findWhere($where, $columns = array('*'))
public function findWhereIn($field, $values, $columns = ['*'])
public function whereHas($relation, $closure)

Uniqueway\Repositories\Contracts\CriteriaInterface

public function apply($model, Repository $repository)

Example usage

Find film by id;

$this->film->find($id);

Create a new film:

$film = new Film;
$film->fill($attributes);
$this->film->save($film);

Update existing film:

$film = $this->film->find($id);
$film->fill($attributes);
$this->film->save($film);

Delete film:

$film = $this->film->find($id);
$this->film->delete($film);

Find one film by column

```php
$this->film->findBy('title', $title);

Find all film by column

$this->film->findAllBy('author_id', $author_id);

Get all rows by multiple fields

$this->film->findWhere([
    'author_id' => $author_id,
    ['year','>',$year]
]);

Put domain logic into model, use repository perist it

<?php namespace App;

use Illuminate\Database\Eloquent\Model;

class Film extends Model {

    protected $primaryKey = 'film_id';

    protected $table = 'film';

    protected $casts = [
        "rental_rate"       => 'float'
    ];

    public function publish()
    {
        $this->status = 'publish';
    }
}
?>

<?php namespace App\Http\Controllers;

use App\Repositories\FilmsRepository as Film;

class FilmsController extends Controller {

    private $film;

    public function __construct(Film $film) {

        $this->film = $film;
    }

    public function markAsPublish(Request $request, $id) {
        $film = $this->film->find($id);
        $film->publish();
        $this->film->save($film);
        return \Response::ok();
    }
}
?>

Criteria

Criteria is a simple way to apply specific condition, or set of conditions to the repository query. Your criteria class MUST extend the abstract Uniqueway\Repositories\Criteria\Criteria class.

Here is a simple criteria:

<?php namespace App\Repositories\Criteria\Films;

use Uniqueway\Repositories\Criteria\Criteria;
use Uniqueway\Repositories\Contracts\RepositoryInterface as Repository;

class LengthOverTwoHours extends Criteria {

    /**
     * @param $model
     * @param RepositoryInterface $repository
     * @return mixed
     */
    public function apply($model, Repository $repository)
    {
        $model = $model->where('length', '>', 120);
        return $model;
    }
}

Now, inside you controller class you call pushCriteria method:

<?php namespace App\Http\Controllers;

use App\Repositories\Criteria\Films\LengthOverTwoHours;
use App\Repositories\FilmsRepository as Film;

class FilmsController extends Controller {

    /**
     * @var Film
     */
    private $film;

    public function __construct(Film $film) {

        $this->film = $film;
    }

    public function index() {
        $this->film->pushCriteria(new LengthOverTwoHours());
        return \Response::json($this->film->all());
    }
}

Inspired by

• prettus/l5-repository
• bosnadev/repository