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<?php |
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namespace Thinktomorrow\Chief\Relations; |
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use Illuminate\Database\Eloquent\Builder; |
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use Illuminate\Database\Eloquent\Model; |
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class Relation extends Model |
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{ |
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public $timestamps = false; |
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public $guarded = []; |
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/** |
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* Set the keys for a save update query. |
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* We override the default save setup since we do not have a primary key in relation table. |
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* There should however always be the parent and child references so we can use |
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* those to target the record in database. |
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* |
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* @param Builder $query |
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* @return Builder |
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*/ |
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protected function setKeysForSaveQuery(Builder $query) |
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{ |
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$query->where('parent_type', $this->getMorphClass()) |
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->where('parent_id', $this->getKey()) |
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->where('child_type', $this->child_type) |
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->where('child_id', $this->child_id); |
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return $query; |
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} |
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public function parent() |
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{ |
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return $this->morphTo('parent', 'parent_type', 'parent_id'); |
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} |
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public function child() |
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{ |
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return $this->morphTo('child', 'child_type', 'child_id'); |
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} |
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public static function parents($child_type, $child_id) |
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{ |
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$relations = static::where('child_type', $child_type) |
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->where('child_id', $child_id) |
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->orderBy('sort', 'ASC') |
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->get(); |
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return $relations->map(function (Relation $relation) { |
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$parent = $relation->parent; |
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$parent->relation = $relation; |
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return $parent; |
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}); |
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} |
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public static function children($parent_type, $parent_id) |
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{ |
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$relations = static::where('parent_type', $parent_type) |
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->where('parent_id', $parent_id) |
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->orderBy('sort', 'ASC') |
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->get(); |
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return $relations->map(function (Relation $relation) use ($parent_type, $parent_id) { |
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// It could be that the child itself is soft-deleted, if this is the case, we will ignore it and move on. |
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if (!$child = $relation->child) { |
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if (!$relation->child()->withTrashed()->first()) { |
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// if ((!method_exists($childInstance, 'trashed')) || ! $childInstance->onlyTrashed()->find($relation->child_id)) { |
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// If we cannot retrieve it then he collection type is possibly off, this is a database inconsistency and should be addressed |
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throw new \DomainException('Corrupt relation reference. Related child ['.$relation->child_type.'@'.$relation->child_id.'] could not be retrieved for parent [' . $parent_type.'@'.$parent_id.']. Make sure the morph key can resolve to a valid class.'); |
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} |
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return null; |
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} |
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$child->relation = $relation; |
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return $child; |
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}) |
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// In case of soft-deleted entries, this will be null and should be ignored. We make sure that keys are reset in case of removed child |
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->reject(function ($child) { |
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return is_null($child); |
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}) |
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->values(); |
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} |
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public function delete() |
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{ |
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return static::where('parent_type', $this->parent_type) |
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->where('parent_id', $this->parent_id) |
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->where('child_type', $this->child_type) |
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->where('child_id', $this->child_id) |
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->delete(); |
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} |
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public static function deleteRelationsOf($type, $id) |
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{ |
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$relations = static::where(function ($query) use ($type, $id) { |
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return $query->where('parent_type', $type) |
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->where('parent_id', $id); |
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})->orWhere(function ($query) use ($type, $id) { |
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return $query->where('child_type', $type) |
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->where('child_id', $id); |
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})->get(); |
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foreach ($relations as $relation) { |
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$relation->delete(); |
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} |
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} |
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public static function deleteAllChildRelationsOf($type, $id) |
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{ |
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$relations = static::where(function ($query) use ($type, $id) { |
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return $query->where('parent_type', $type) |
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->where('parent_id', $id); |
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})->get(); |
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foreach ($relations as $relation) { |
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$relation->delete(); |
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} |
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} |
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public static function deleteAllParentRelationsOf($type, $id) |
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{ |
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$relations = static::where(function ($query) use ($type, $id) { |
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return $query->where('child_type', $type) |
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->where('child_id', $id); |
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})->get(); |
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foreach ($relations as $relation) { |
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$relation->delete(); |
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} |
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} |
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} |
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thinktomorrow /
chief
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