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/*
* This file is part of the ICanBoogie package.
*
* (c) Olivier Laviale <olivier.laviale@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace ICanBoogie\ActiveRecord;
use ICanBoogie\Accessor\AccessorTrait;
use ICanBoogie\OffsetNotWritable;
/**
* Relation collection of a model.
*
* @property-read Model $model The parent model.
*/
class RelationCollection implements \ArrayAccess
{
use AccessorTrait;
/**
* Parent model.
*
* @var Model
*/
protected $model;
protected function get_model()
{
return $this->model;
}
/**
* Relations.
*
* @var Relation[]
*/
protected $relations;
/**
* Initialize the {@link $model} property.
*
* @param Model $model The parent model.
*/
public function __construct(Model $model)
{
$this->model = $model;
}
public function offsetExists($relation_name)
{
return isset($this->relations[$relation_name]);
}
public function offsetGet($relation_name)
{
if (!$this->offsetExists($relation_name))
{
throw new RelationNotDefined($relation_name, $this);
}
return $this->relations[$relation_name];
}
public function offsetSet($relation_name, $relation)
{
throw new OffsetNotWritable([ $relation_name, $this ]);
}
public function offsetUnset($relation_name)
{
throw new OffsetNotWritable([ $relation_name, $this ]);
}
/**
* Add a _belongs to_ relation.
*
* <pre>
* $cars->belongs_to([ $drivers, $brands ]);
* # or
* $cars->belongs_to([ 'drivers', 'brands' ]);
* # or
* $cars->belongs_to($drivers, $brands);
* # or
* $cars->belongs_to($drivers)->belongs_to($brands);
* # or
* $cars->belongs_to([
*
* [ $drivers, [ 'local_key' => 'card_id', 'foreign_key' => 'driver_id' ] ]
* [ $brands, [ 'local_key' => 'brand_id', 'foreign_key' => 'brand_id' ] ]
*
* ]);
* </pre>
*
* @param string|array $belongs_to
*
* @return Model
*/
public function belongs_to($belongs_to)
{
if (func_num_args() > 1)
{
$belongs_to = func_get_args();
}
foreach ((array) $belongs_to as $definition)
{
if (!is_array($definition))
{
$definition = [ $definition ];
}
list($related, $options) = ((array) $definition) + [ 1 => [] ];
$relation = new BelongsToRelation($this->model, $related, $options);
$this->relations[$relation->as] = $relation;
}
return $this->model;
}
/**
* Add a one-to-many relation.
*
* <pre>
* $this->has_many('comments');
* $this->has_many([ 'comments', 'attachments' ]);
* $this->has_many([ [ 'comments', [ 'as' => 'comments' ] ], 'attachments' ]);
* </pre>
*
* @param Model|string $related The related model can be specified using its instance or its
* identifier.
* @param array $options the following options are available:
*
* - `local_key`: The name of the local key. Default: The parent model's primary key.
* - `foreign_key`: The name of the foreign key. Default: The parent model's primary key.
* - `as`: The name of the magic property to add to the prototype. Default: a plural name
* resolved from the foreign model's id.
*
* @return Model
*
* @see HasManyRelation
*/
public function has_many($related, array $options = [])
{
if (is_array($related))
{
$relation_list = $related;
foreach ($relation_list as $definition)
{
list($related, $options) = ((array) $definition) + [ 1 => [] ];
$relation = new HasManyRelation($this->model, $related, $options);
$this->relations[$relation->as] = $relation;
}
return null;
}
$relation = new HasManyRelation($this->model, $related, $options);
$this->relations[$relation->as] = $relation;
return $this->model;
}
}