<h1 align="center"><img src="https://i.imgur.com/fHMqwTF.png" width="170" alt="Corcel PHP"></h1>

**A collection of Model classes that allows you to get data directly from a WordPress database.**

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Corcel is a collection of PHP classes built on top of [Eloquent ORM](https://laravel.com/docs/master/eloquent) (from [Laravel](http://laravel.com) framework), that provides a fluent interface to connect and get data directly from a [WordPress](http://wordpress.org) database.

You can use WordPress as the backend (administration panel) or CMS, for inserting posts, custom types, etc, and any other PHP app in the other side querying those data (as a Model layer). It's easier to use Corcel with Laravel, but you're free to use it with any PHP project that uses Composer.

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# Table of Contents
# <a id="install"></a> Installing Corcel


- [Version Compatibility](#versions)
- [Installing Corcel](#install)
- [Database Setup](#database-setup)
- [Usage](#usage)
    - [Posts](#posts)
    - [Advanced Custom Fields (ACF) Integration](#acf)
    - [Custom Post Type](#custom-post)
    - [Single Table Inheritance](#single-tab)
    - [Taxonomies](#taxonomies)
    - [Post Format](#post-format)
    - [Pages](#pages)
    - [Categories & Taxonomies](#cats)
    - [Attachments & Revision](#attachments)
    - [Thumbnails](#thumbnails)
    - [Options](#options)
    - [Menu](#menu)
    - [Users](#users)
    - [Authentication](#auth)
    - [Running Tests](#tests)
- [Contributing](#contrib)
- [License](#license)

# <a id="versions"></a> Version Compatibility

 Laravel  | Corcel
:---------|:----------
 5.1.x    | 2.1.x
 5.2.x    | 2.2.x
 5.3.x    | 2.3.x
 5.4.x    | 2.4.x
 5.5.x    | 2.5.x
 5.6.x    | 2.6.x
 5.7.x    | 2.7.x

# <a id="install"></a> Installing Corcel

You need to use Composer to install Corcel into your project:

```
composer require jgrossi/corcel
```

## Configuring (Laravel)

Now you have to include `CorcelServiceProvider` in your `config/app.php`:

```php
'providers' => [
    /*
     * Package Service Providers...
     */
    Corcel\Laravel\CorcelServiceProvider::class,
]
```

Now configure our config file to make sure your database is set correctly and to allow you to register custom post types and shortcodes in a very easy way:

Run the following Artisan command in your terminal:

```
php artisan vendor:publish --provider="Corcel\Laravel\CorcelServiceProvider"
```

Now you have a `config/corcel.php` config file, where you can set the database connection with WordPress tables and much more.

# <a id="database-setup"></a> Database Setup

## Laravel Setup

Just set the database `connection` you want to be used by Corcel in `config/corcel.php`.

Let' suppose you have those following database connections in your `config/database.php` file:

```php
// File: /config/database.php

'connections' => [

    'mysql' => [ // for Laravel database
        'driver'    => 'mysql',
        'host'      => 'localhost',
        'database'  => 'mydatabase',
        'username'  => 'admin'
        'password'  => 'secret',
        'charset'   => 'utf8',
        'collation' => 'utf8_unicode_ci',
        'prefix'    => '',
        'strict'    => false,
        'engine'    => null,
    ],

    'wordpress' => [ // for WordPress database (used by Corcel)
        'driver'    => 'mysql',
        'host'      => 'localhost',
        'database'  => 'mydatabase',
        'username'  => 'admin',
        'password'  => 'secret',
        'charset'   => 'utf8',
        'collation' => 'utf8_unicode_ci',
        'prefix'    => 'wp_',
        'strict'    => false,
        'engine'    => null,
    ],
],
```

In this case you should want to use the `wordpress` connection for Corcel, so just set it into the Corcel config file `config/corcel.php`:

```php
'connection' => 'wordpress',
```

## Other PHP Framework (not Laravel) Setup

Here you have to configure the database to fit the Corcel requirements. First, you should include the Composer `autoload` file if not already loaded:

```php
require __DIR__ . '/vendor/autoload.php';
```

Now you must set your WordPress database params:

```php
$params = array(
    'database'  => 'database_name',
    'username'  => 'username',
    'password'  => 'pa$$word',
    'prefix'    => 'wp_' // default prefix is 'wp_', you can change to your own prefix
);
Corcel\Database::connect($params);
```

You can specify all Eloquent params, but some are default (but you can override them).

```php
'driver'    => 'mysql',
'host'      => 'localhost',
'charset'   => 'utf8',
'collation' => 'utf8_unicode_ci',
'prefix'    => 'wp_', // Specify the prefix for WordPress tables, default prefix is 'wp_'
```

# <a id="usage"></a>  Usage

## <a id="posts"></a> Posts

> Every time you see `Post::method()`, if you're using your own Post class (where you set the connection name), like `App\Post` you should use `App\Post::method()` and not `Post::method()`. All the examples are assuming you already know this difference.

> In the examples, every time you see `Post::method()` assume `Corcel\Model\Post::method()`.

```php
// All published posts
$posts = Post::published()->get();
$posts = Post::status('publish')->get();

// A specific post
$post = Post::find(31);
echo $post->post_title;
```

## Creating your own model classes

Optionally you can create your own `Post` model (or Page, or whatever) which extends `Corcel\Post`. Then set the connection name (if you want to override the Corcel's default one) you're using, in this case `foo-bar`:

> Extending `Corcel\Model\Post` class can add flexibility to your project, once you can add custom methods and logic, according what you need to use from your WordPress database.

```php
<?php // File: app/Post.php

namespace App;

use Corcel\Model\Post as Corcel;

class Post extends Corcel
{
    protected $connection = 'foo-bar';

    public function customMethod() {
        //
    }
}
```

So, now you can fetch WP database data using your own class:

```php
$posts = App\Post::all(); // using the 'foo-bar' connection
```

> Just remember you don't have to extends our `Post` class, you can use `Corcel\Model\Post` and all others model without any problem.

### Meta Data (Custom Fields)

> NOTE: In Corcel v1 you could save meta data using the `Post::save()` method. That's not allowed anymore. Use `saveMeta()` or `createMeta()` (see below) methods to save post meta.

You can retrieve meta data from posts too.

```php
// Get a custom meta value (like 'link' or whatever) from a post (any type)
$post = Post::find(31);
echo $post->meta->link; // OR
echo $post->fields->link;
echo $post->link; // OR
```

To create or update meta data form a User just use the `saveMeta()` or `saveField()` methods. They return `bool` like the Eloquent `save()` method.

```php
$post = Post::find(1);
$post->saveMeta('username', 'jgrossi');
```

You can save many meta data at the same time too:

```php
$post = Post::find(1);
$post->saveMeta([
    'username' => 'jgrossi',
    'url' => 'http://jgrossi.com',
]);
```

You also have the `createMeta()` and `createField()` methods, that work like the `saveX()` methods, but they are used only for creation and return the `PostMeta` created instance, instead of `bool`.

```php
$post = Post::find(1);
$postMeta = $post->createMeta('foo', 'bar'); // instance of PostMeta class
$trueOrFalse = $post->saveMeta('foo', 'baz'); // boolean
```

### Querying Posts by Custom Fields (Meta)

There are multiples possibilities to query posts by their custom fields (meta) by using scopes on a `Post` (or another other model which uses the `HasMetaFields` trait) class:

To check if a meta key exists, use the `hasMeta()` scope:
```
// Finds a published post with a meta flag.
$post = Post::published()->hasMeta('featured_article')->first();
```

If you want to precisely match a meta-field, you can use the `hasMeta()` scope with a value.

```php
// Find a published post which matches both meta_key and meta_value.
$post = Post::published()->hasMeta('username', 'jgrossi')->first();
```

If you need to match multiple meta-fields, you can also use the `hasMeta()` scope passing an array as parameter:

```php
$post = Post::hasMeta(['username' => 'jgrossi'])->first();
$post = Post::hasMeta(['username' => 'jgrossi', 'url' => 'jgrossi.com'])->first();
// Or just passing the keys
$post = Post::hasMeta(['username', 'url'])->first();
```

If you need to match a case-insensitive string, or match with wildcards, you can use the `hasMetaLike()` scope with a value. This uses an SQL `LIKE` operator, so use '%' as a wildcard operator.

```php
// Will match: 'J Grossi', 'J GROSSI', and 'j grossi'.
$post = Post::published()->hasMetaLike('author', 'J GROSSI')->first();

// Using % as a wildcard will match: 'J Grossi', 'J GROSSI', 'j grossi', 'Junior Grossi' etc.
$post = Post::published()->hasMetaLike('author', 'J%GROSSI')->first();
```

### Fields Aliases

The `Post` class has support to "aliases", so if you check the `Post` class you should note some aliases defined in the static `$aliases` array, like `title` for `post_title` and `content` for `post_content`.

```php
$post = Post::find(1);
$post->title === $post->post_title; // true
```

If you're extending the `Post` class to create your own class you can use `$aliases` too. Just add new aliases to that static property inside your own class and it will automatically inherit all aliases from parent `Post` class:

```php
class A extends \Corcel\Post
{
    protected static $aliases = [
        'foo' => 'post_foo',
    ];
}

$a = A::find(1);
echo $a->foo;
echo $a->title; // from Post class
```

### Custom Scopes

To order posts you can use `newest()` and `oldest()` scopes, for both `Post` and `User` classes:

```php
$newest = Post::newest()->first();
$oldest = Post::oldest()->first();
```

### Pagination

To order posts just use Eloquent `paginate()` method:

```php
$posts = Post::published()->paginate(5);
foreach ($posts as $post) {
    // ...
}
```

To display the pagination links just call the `links()` method:

 ```php
 {{ $posts->links() }}
 ```

## <a id="acf"></a>  Advanced Custom Fields (ACF)

If you want to retrieve a custom field created by the [Advanced Custom Fields (ACF)](http://advancedcustomfields.com) plugin, you have to install the `corcel/acf` plugin - [click here for more information](http://github.com/corcel/acf) - and call the custom field like this:

```php
$post = Post::find(123);
echo $post->acf->some_radio_field;
$repeaterFields = $post->acf->my_repeater_name;
```

To avoid unnecessary SQL queries just set the field type you're requesting. Usually two SQL queries are necessary to get the field type, so if you want to specify it you're skipping those extra queries:

```php
$post = Post::find(123);
echo $post->acf->text('text_field_name');
echo $post->acf->boolean('boolean_field_name');
```

## <a id="custom-post"></a> Custom Post Type

You can work with custom post types too. You can use the `type(string)` method or create your own class.

```php
// using type() method
$videos = Post::type('video')->status('publish')->get();

// using your own class
class Video extends Corcel\Post
{
    protected $postType = 'video';
}
$videos = Video::status('publish')->get();
```

Using `type()` method will make Corcel to return all objects as `Corcel\Post`. Using your custom class you have the advantage to customize classes, including custom methods and properties, return all objects as `Video`, for example.

Custom post types and meta data:

```php
// Get 3 posts with custom post type (store) and show its address
$stores = Post::type('store')->status('publish')->take(3)->get();
foreach ($stores as $store) {
    $storeAddress = $store->address; // option 1
    $storeAddress = $store->meta->address; // option 2
    $storeAddress = $store->fields->address; // option 3
}
```

### Configuring the returning Instance

Every time you call something like `Post::type('video)->first()` or `Video::first()` you receive a `Corcel\Model\Post` instance.

If you choose to create a new class for your custom post type, you can have this class be returned for all instances of that post type.

#### Registering Post Types (the easy way)

Instead of call `Post::registerPostType()` method for all custom post type you want to register, just use the Corcel's config file and map all custom posts and it's classes. They will be registered automatically for you:

```php
'post_types' => [
    'video' => App\Video::class,
    'foo' => App\Foo::class,
]
```

So every time you query a custom post type the mapped instance will be returned.

> This is particular useful when you are intending to get a Collection of Posts of different types (e.g. when fetching the posts defined in a menu).

#### Registering Post Types (the hard way)

```php
//all objects in the $videos Collection will be instances of Post
$videos = Post::type('video')->status('publish')->get();

// register the video custom post type and its particular class
Post::registerPostType('video', '\App\Video')


//now all objects in the $videos Collection will be instances of Video
$videos = Post::type('video')->status('publish')->get();
```

You can also do this for inbuilt classes, such as Page or Post. Simply register the Page or Post class with the associated post type string, and that object will be returned instead of the default one.

## <a id="shortcodes"></a> Shortcodes

### From config (Laravel)

You can map all shortcodes you want inside the `config/corcel.php` file, under the `'shortcodes'` key. In this case you should create your own class that `implements` the `Corcel\Shortcode` interface, that requires a `render()` method:

```php
'shortcodes' => [
    'foo' => App\Shortcodes\FooShortcode::class,
    'bar' => App\Shortcodes\BarShortcode::class,
],
```

This is a sample shortcode class:

```php
class FakeShortcode implements \Corcel\Shortcode
{
    /**
     * @param ShortcodeInterface $shortcode
     * @return string
     */
    public function render(ShortcodeInterface $shortcode)
    {
        return sprintf(
            'html-for-shortcode-%s-%s',
            $shortcode->getName(),
            $shortcode->getParameter('one')
        );
    }
}
```

### In runtime

You can add [shortcodes](https://codex.wordpress.org/Shortcode_API) by calling the `addShortcode` method on the `Post` model :

```php
// [gallery id="1"]
Post::addShortcode('gallery', function ($shortcode) {
    return $shortcode->getName() . '.' . $shortcode->getParameter('id');
});
$post = Post::find(1);
echo $post->content;
```

> Laravel 5.5 uses Package Auto-Discovery, so doesn't require you to manually add the ServiceProvider

If you are using Laravel, we suggest adding your shortcodes handlers in `App\Providers\AppServiceProvider`, in the `boot` method.

### Shortcode Parsing

Shortcodes are parsed with the [*thunderer/shortcode*](https://github.com/thunderer/Shortcode) library. 

Several different parsers are provided. `RegularParser` is the most technically correct and is provided by default. This is suitable for most cases. However if you encounter some irregularities in your shortcode parsing, you may need to configure Corcel to use the `WordpressParser`, which more faithfully matches WordPress' shortcode regex. To do this, if you are using Laravel, edit the `config/corcel.php` file, and uncomment your preferred parser. Alternatively, you can replace this with a parser of your own.

```php
'shortcode_parser' => Thunder\Shortcode\Parser\RegularParser::class,
// 'shortcode_parser' => Thunder\Shortcode\Parser\WordpressParser::class,
```

If you are not using Laravel, you can to do this in runtime, calling the `setShortcodeParser()` method from any class which uses the `Shortcodes` trait, such as `Post`, for example.

```php
$post->setShortcodeParser(new WordpressParser());
echo $post->content; // content parsed with "WordpressParser" class
```

For more information about the shortcode package, [click here](https://github.com/thunderer/Shortcode).

## <a id="taxonomies"></a>Taxonomies

You can get taxonomies for a specific post like:

```php
$post = Post::find(1);
$taxonomy = $post->taxonomies()->first();
echo $taxonomy->taxonomy;
```

Or you can search for posts using its taxonomies:

```php
$post = Post::taxonomy('category', 'php')->first();
```

## <a id="post-format"></a>Post Format

You can also get the post format, like the WordPress function `get_post_format()`:

```php
echo $post->getFormat(); // should return something like 'video', etc
```

## <a id="pages"></a>Pages

Pages are like custom post types. You can use `Post::type('page')` or the `Corcel\Model\Page` class.

```php

use Corcel\Model\Page;

// Find a page by slug
$page = Page::slug('about')->first(); // OR
$page = Post::type('page')->slug('about')->first();
echo $page->post_title;
```

## <a id="cats"></a>Categories and Taxonomies

Get a category or taxonomy or load posts from a certain category. There are multiple ways
to achieve it.

```php
// all categories
$cat = Taxonomy::category()->slug('uncategorized')->posts->first();
echo "<pre>"; print_r($cat->name); echo "</pre>";

// only all categories and posts connected with it
$cat = Taxonomy::where('taxonomy', 'category')->with('posts')->get();
$cat->each(function($category) {
    echo $category->name;
});

// clean and simple all posts from a category
$cat = Category::slug('uncategorized')->posts->first();
$cat->posts->each(function($post) {
    echo $post->post_title;
});
```

## <a id="attachments"></a>Attachment and Revision

Getting the attachment and/or revision from a `Post` or `Page`.

```php
$page = Page::slug('about')->with('attachment')->first();
// get feature image from page or post
print_r($page->attachment);

$post = Post::slug('test')->with('revision')->first();
// get all revisions from a post or page
print_r($post->revision);
```

## <a id="thumbnails"></a>Thumbnails

Getting the thumbnail for a `Post` or `Page`.

```php
$post = Post::find(1);

// Retrieve an instance of Corcel\Model\Meta\ThumbnailMeta.
print_r($post->thumbnail);

// For convenience you may also echo the thumbnail instance to get the URL of the original image.
echo $post->thumbnail;
```

To retrieve a particular thumbnail size you may call the `->size()` method on the thumbnail object and pass in a thumbnail size string parameter (e.g. `thumbnail` or `medium`). If the thumbnail has been generated, this method returns an array of image metadata, otherwise the original image URL will be returned as a fallback.

```php
if ($post->thumbnail !== null) {
    /**
     * [
     *     'file' => 'filename-300x300.jpg',
     *     'width' => 300,
     *     'height' => 300,
     *     'mime-type' => 'image/jpeg',
     *     'url' => 'http://localhost/wp-content/uploads/filename-300x300.jpg',
     * ]
     */
    print_r($post->thumbnail->size(Corcel\Model\Meta\ThumbnailMeta::SIZE_THUMBNAIL));

    // http://localhost/wp-content/uploads/filename.jpg
    print_r($post->thumbnail->size('invalid_size'));
}
```

## <a id="options"></a>Options

> In previous versions of Corcel this classe was called `Options` instead of `Option` (singular). So take care of using always this class in the singular form starting from `v2.0.0`.

> The `Option::getAll()` method was removed in Corcel 2+, in favor of `Option::asArray($keys [])`.

You can use the `Option` class to get data from `wp_options` table:

```php
$siteUrl = Option::get('siteurl');
```

You can also add new options:

```php
Option::add('foo', 'bar'); // stored as string
Option::add('baz', ['one' => 'two']); // this will be serialized and saved
```

You can get all options in a simple array:

```php
$options = Option::asArray();
echo $options['siteurl'];
```

Or you can specify only the keys you want to get:

```php
$options = Option::asArray(['siteurl', 'home', 'blogname']);
echo $options['home'];
```

## <a id="menu"></a> Menu

To get a menu by its slug, use the syntax below. The menu items will be loaded in the `items` variable (it's a collection of `Corcel\Model\MenuItem` objects).

The currently supported menu items are: Pages, Posts, Custom Links and Categories.

Once you'll have instances of `MenuItem` class, if you want to use the original instance (like the original Page or Term, for example), just call the `MenuItem::instance()` method. The `MenuItem` object is just a post with `post_type` equals `nav_menu_item`:

```php
$menu = Menu::slug('primary')->first();

foreach ($menu->items as $item) {
    echo $item->instance()->title; // if it's a Post
    echo $item->instance()->name; // if it's a Term
    echo $item->instance()->link_text; // if it's a custom link
}
```

The `instance()` method will return the matching object:

- `Post` instance for `post` menu item;
- `Page` instance for `page` menu item;
- `CustomLink` instance for `custom` menu item;
- `Term` instance for `category` menu item.

### Multi-levels Menus

To handle multi-levels menus, loop through all the menu items to put them on the right levels, for example.

You can use the `MenuItem::parent()` method to retrieve the parent instance of that menu item:

```php
$items = Menu::slug('foo')->first()->items;
$parent = $items->first()->parent(); // Post, Page, CustomLink or Term (category)
```

To group menu items according their parents, you can use the `->groupBy()` method in the `$menu->items` collection, grouping menu items by their `$item->parent()->ID`.

To read more about the `groupBy()` method [take a look on the Laravel documentation](https://laravel.com/docs/5.4/collections#method-groupby).

## <a id="users"></a> Users

You can manipulate users in the same manner you work with posts:

```php
// All users
$users = User::get();

// A specific user
$user = User::find(1);
echo $user->user_login;
```

## <a id="auth"></a>Authentication

### Using Laravel

Make sure you have `CorcelServiceProvider` provider registered in `config/app.php` :

```php
'providers' => [
    // Other Service Providers

    Corcel\Laravel\CorcelServiceProvider::class,
],
```

And then, define the user provider in `config/auth.php` to allow Laravel to login with WordPress users:

```php
'providers' => [
    'users' => [
        'driver' => 'corcel',
        'model'  => Corcel\Model\User::class,
    ],
],
```

Now you can use the `Auth` facade to authenticate users:

```php
Auth::validate([
    'email' => 'admin@example.com', // or using 'username' too
    'password' => 'secret',
]);
```

To make Laravel's Password Reset work with Corcel, we have to override how passwords are stored in the database. To do this, you must change `Auth/PasswordController.php` from:

```php
use App\Http\Controllers\Controller;
use Illuminate\Foundation\Auth\ResetsPasswords;

class PasswordController extends Controller
{
    use ResetsPasswords;
```

to

```php
use App\Http\Controllers\Controller;
use Illuminate\Foundation\Auth\ResetsPasswords;
use Corcel\Laravel\Auth\ResetsPasswords as CorcelResetsPasswords;

class PasswordController extends Controller
{
    use ResetsPasswords, CorcelResetsPasswords {
        CorcelResetsPasswords::resetPassword insteadof ResetsPasswords;
    }
```

### Not using Laravel

You can use the `AuthUserProvider` class to manually authenticate a user :

```php
$userProvider = new Corcel\Laravel\Auth\AuthUserProvider;
$user = $userProvider->retrieveByCredentials(['username' => 'admin']);
if(!is_null($user) && $userProvider->validateCredentials($user, ['password' => 'admin'])) {
    // successfully login
}
```

> Remember you can use both `username` and `email` as credentials for a User.

# <a id="tests"></a> Running Tests

To run the phpunit tests, execute the following command :

```
./vendor/bin/phpunit
```

If you have the global `phpunit` command installed you can just type:

```
phpunit
```

All tests were written using Sqlite with `:memory` database, so it runs in your memory. All tests use `factories` and `migrations`. Take a look on `tests/database/factories` and `tests/database/migrations` directories for more information.

# <a id="contrib"></a> Contributing

All contributions are welcome to help improve Corcel.

Before you submit your Pull Request (PR) consider the following guidelines:

- Fork https://github.com/corcel/corcel in Github;

- Clone your forked repository (not Corcel's) locally and create your own branch based on the version you want to fix (`2.1`, `2.2`, `2.3`, `2.4` or `2.5`): `git checkout -b my-fix-branch 2.5`;

- Make all code changes. Remember here to write at least one test case for any feature you add or any bugfix (if it's not tested yet). Our goal is to have 100% of the code covered by tests, so help us to write a better code ;-) If you don' have experience with tests it's a good opportunity to learn. Just take a look into our tests cases and you'll see how simple they are.

- Run the unit tests locally to make sure your changes did not break any other piece of code;

- Push your new branch to your forked repository, usually `git push origin HEAD` should work;

- In GitHub again, create a Pull Request (PR) from your custom `my-fix-branch` branch (from your forked repository) to the related branch (`corcel:2.5`, for example, not `corcel:master`, please;

- Wait for the approval :-)

## <a id="license"></a> Licence

[MIT License](http://jgrossi.mit-license.org/) © Junior Grossi
