###This package is abandoned and no longer maintained. The author suggests using the https://github.com/andersao/l5-repository package instead.

Laravel 4 - Repositories

Laravel 4 Repositories is used to abstract the data layer, making our application more flexible to maintain.

See Laravel 5 - Repositories

Installation

Add this line "prettus/laravel-repository": "2.0.*" in your composer.json.

"require": {
    "prettus/laravel-repository": "2.0.*"
}

Issue composer update

Add to app/config/app.php service provider array:

    'Prettus\Repository\RepositoryServiceProvider',

Publish Configuration

php artisan config:publish prettus/laravel-repository

Methods

Repository

• scopeReset()
• find($id, $columns = ['*'])
• findByField($field, $value, $columns = ['*'])
• all($columns = array('*'))
• paginate($limit = null, $columns = ['*'])
• create(array $attributes)
• update(array $attributes, $id)
• delete($id)
• getModel()
• with(array $relations);
• pushCriteria(Criteria $criteria)
• getCriteria()
• getByCriteria(Criteria $criteria)
• skipCriteria()

Criteria

• apply($query)

Usage

Create a Model

Create your model normally , but it is important to define the attributes that can be filled from the input form data.

class Post extends Eloquent { // or Ardent, Or any other Model Class

    protected $fillable = [
        'title',
        'author',
        ...
     ];

     ...
}

Create a Repository

use Prettus\Repository\Eloquent\Repository;

class PostRepository extends Repository {

    public function __construct(Post $model)
    {
        parent::__construct($model);
    }   
    
}

Use methods

class PostsController extends BaseController {

    /**
     * @var PostRepository
     */
    protected $repository;

    public function __construct(PostRepository $repository){
        $this->repository = $repository;
    }
    
    ....
}

Find all results in Repository

$posts = $this->repository->all();

Find all results in Repository with pagination

$posts = $this->repository->paginate($limit = null, $columns = ['*']);

Find by result by id

$post = $this->repository->find($id);

Create new entry in Repository

$post = $this->repository->create( Input::all() );

Update entry in Repository

$post = $this->repository->update( Input::all(), $id );

Delete entry in Repository

$this->repository->delete($id)

Create a Criteria

Criteria is a way to change the repository of the query by applying specific conditions according to their need . You can add multiple Criteria in your repository

class MyCriteria implements \Prettus\Repository\Contracts\Criteria {

    public function apply($query)
    {
        $query = $query->where('user_id','=', Auth::user()->id );
        return $query;
    }
}

Using the Criteria in a Controller

class PostsController extends BaseController {

    /**
     * @var PostRepository
     */
    protected $repository;

    public function __construct(PostRepository $repository){
        $this->repository = $repository;
    }


    public function index()
    {
        $this->repository->pushCriteria(new MyCriteria());
        $posts = $this->repository->all();
		...
    }

}

Getting results from criteria

$posts = $this->repository->getByCriteria(new MyCriteria());

Setting Criteria default in Repository

use Prettus\Repository\Eloquent\Repository;

class PostRepository extends Repository {

    public function __construct(Post $model)
    {
        parent::__construct($model);
    }
    
    public function boot(){
        $this->pushCriteria(new MyCriteria());
        $this->pushCriteria(new AnotherCriteria());
        ...
    }
    
}

Skip criteria defined in the repository

Use skipCriteria before any method in the repository

$posts = $this->repository->skipCriteria()->all();

Using the RequestCriteria

RequestCriteria is a standard Criteria implementation. It enables filters perform in the repository from parameters sent in the request.

You can perform a dynamic search , filtering the data and customize queries

To use the Criteria in your repository , you can add a new criteria in the boot method of your repository , or directly use in your controller , in order to filter out only a few requests

####Enabling in your Repository

use Prettus\Repository\Eloquent\Repository;
use Prettus\Repository\Criteria\RequestCriteria;

class PostRepository extends Repository {

	/**
     * @var array
     */
    protected $fieldSearchable = [
        'name',
        'email'
    ];

    public function __construct(Post $model)
    {
        parent::__construct($model);
    }
    
    public function boot(){
        $this->pushCriteria(app('Prettus\Repository\Criteria\RequestCriteria'));
        ...
    }
    
}

Remember, you need to define which fields from the model can are searchable.

In your repository set $fieldSearchable with their fields searchable.

protected $fieldSearchable = [
	'name',
	'email'
];

You can set the type of condition will be used to perform the query , the default condition is "="

protected $fieldSearchable = [
	'name'=>'like',
	'email', // Default Condition "="
	'your_field'=>'condition'
];

####Enabling in your Controller

	public function index()
    {
        $this->repository->pushCriteria(app('Prettus\Repository\Criteria\RequestCriteria'));
        $posts = $this->repository->all();
		...
    }

Example the Crirteria

Request all data without filter by request

http://prettus.local/users

[
    {
        "id": 1,
        "name": "Anderson Andrade",
        "email": "[email protected]",
        "created_at": "-0001-11-30 00:00:00",
        "updated_at": "-0001-11-30 00:00:00"
    },
    {
        "id": 2,
        "name": "Lorem Ipsum",
        "email": "[email protected]",
        "created_at": "-0001-11-30 00:00:00",
        "updated_at": "-0001-11-30 00:00:00"
    },
    {
        "id": 3,
        "name": "Laravel",
        "email": "[email protected]",
        "created_at": "-0001-11-30 00:00:00",
        "updated_at": "-0001-11-30 00:00:00"
    }
]

Conducting research in the repository

http://prettus.local/users?search=Anderson%20Andrade

or

http://prettus.local/users?search=Anderson&searchFields=name:like

or

http://prettus.local/[email protected]&searchFields=email:=

[
    {
        "id": 1,
        "name": "Anderson Andrade",
        "email": "[email protected]",
        "created_at": "-0001-11-30 00:00:00",
        "updated_at": "-0001-11-30 00:00:00"
    }
]

Filtering fields

http://prettus.local/users?filter=id;name

[
    {
        "id": 1,
        "name": "Anderson Andrade"
    },
    {
        "id": 2,
        "name": "Lorem Ipsum"
    },
    {
        "id": 3,
        "name": "Laravel"
    }
]

Sorting the results

http://prettus.local/users?filter=id;name&orderBy=id&sortedBy=desc

[
    {
        "id": 3,
        "name": "Laravel"
    },
    {
        "id": 2,
        "name": "Lorem Ipsum"
    },
    {
        "id": 1,
        "name": "Anderson Andrade"
    }
]

####Overwrite params name

You can change the name of the parameters in the configuration file config/repository-criteria.php

Author

Anderson Andrade - [email protected]