Viewing file:  MorphToMany.php (5.66 KB) -rwxrwxr-x
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<?php
namespace Illuminate\Database\Eloquent\Relations;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Arr;
class MorphToMany extends BelongsToMany
{
/**
* The type of the polymorphic relation.
*
* @var string
*/
protected $morphType;
/**
* The class name of the morph type constraint.
*
* @var string
*/
protected $morphClass;
/**
* Indicates if we are connecting the inverse of the relation.
*
* This primarily affects the morphClass constraint.
*
* @var bool
*/
protected $inverse;
/**
* Create a new morph to many relationship instance.
*
* @param \Illuminate\Database\Eloquent\Builder $query
* @param \Illuminate\Database\Eloquent\Model $parent
* @param string $name
* @param string $table
* @param string $foreignPivotKey
* @param string $relatedPivotKey
* @param string $parentKey
* @param string $relatedKey
* @param string|null $relationName
* @param bool $inverse
* @return void
*/
public function __construct(Builder $query, Model $parent, $name, $table, $foreignPivotKey,
$relatedPivotKey, $parentKey, $relatedKey, $relationName = null, $inverse = false)
{
$this->inverse = $inverse;
$this->morphType = $name.'_type';
$this->morphClass = $inverse ? $query->getModel()->getMorphClass() : $parent->getMorphClass();
parent::__construct(
$query, $parent, $table, $foreignPivotKey,
$relatedPivotKey, $parentKey, $relatedKey, $relationName
);
}
/**
* Set the where clause for the relation query.
*
* @return $this
*/
protected function addWhereConstraints()
{
parent::addWhereConstraints();
$this->query->where($this->qualifyPivotColumn($this->morphType), $this->morphClass);
return $this;
}
/**
* Set the constraints for an eager load of the relation.
*
* @param array $models
* @return void
*/
public function addEagerConstraints(array $models)
{
parent::addEagerConstraints($models);
$this->query->where($this->qualifyPivotColumn($this->morphType), $this->morphClass);
}
/**
* Create a new pivot attachment record.
*
* @param int $id
* @param bool $timed
* @return array
*/
protected function baseAttachRecord($id, $timed)
{
return Arr::add(
parent::baseAttachRecord($id, $timed), $this->morphType, $this->morphClass
);
}
/**
* Add the constraints for a relationship count query.
*
* @param \Illuminate\Database\Eloquent\Builder $query
* @param \Illuminate\Database\Eloquent\Builder $parentQuery
* @param array|mixed $columns
* @return \Illuminate\Database\Eloquent\Builder
*/
public function getRelationExistenceQuery(Builder $query, Builder $parentQuery, $columns = ['*'])
{
return parent::getRelationExistenceQuery($query, $parentQuery, $columns)->where(
$this->qualifyPivotColumn($this->morphType), $this->morphClass
);
}
/**
* Get the pivot models that are currently attached.
*
* @return \Illuminate\Support\Collection
*/
protected function getCurrentlyAttachedPivots()
{
return parent::getCurrentlyAttachedPivots()->map(function ($record) {
return $record instanceof MorphPivot
? $record->setMorphType($this->morphType)
->setMorphClass($this->morphClass)
: $record;
});
}
/**
* Create a new query builder for the pivot table.
*
* @return \Illuminate\Database\Query\Builder
*/
public function newPivotQuery()
{
return parent::newPivotQuery()->where($this->morphType, $this->morphClass);
}
/**
* Create a new pivot model instance.
*
* @param array $attributes
* @param bool $exists
* @return \Illuminate\Database\Eloquent\Relations\Pivot
*/
public function newPivot(array $attributes = [], $exists = false)
{
$using = $this->using;
$pivot = $using ? $using::fromRawAttributes($this->parent, $attributes, $this->table, $exists)
: MorphPivot::fromAttributes($this->parent, $attributes, $this->table, $exists);
$pivot->setPivotKeys($this->foreignPivotKey, $this->relatedPivotKey)
->setMorphType($this->morphType)
->setMorphClass($this->morphClass);
return $pivot;
}
/**
* Get the pivot columns for the relation.
*
* "pivot_" is prefixed at each column for easy removal later.
*
* @return array
*/
protected function aliasedPivotColumns()
{
$defaults = [$this->foreignPivotKey, $this->relatedPivotKey, $this->morphType];
return collect(array_merge($defaults, $this->pivotColumns))->map(function ($column) {
return $this->qualifyPivotColumn($column).' as pivot_'.$column;
})->unique()->all();
}
/**
* Get the foreign key "type" name.
*
* @return string
*/
public function getMorphType()
{
return $this->morphType;
}
/**
* Get the class name of the parent model.
*
* @return string
*/
public function getMorphClass()
{
return $this->morphClass;
}
/**
* Get the indicator for a reverse relationship.
*
* @return bool
*/
public function getInverse()
{
return $this->inverse;
}
}
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