Subversion-Projekte lars-tiefland.laravel_shop

<?php

namespace Illuminate\Database\Eloquent\Relations;

use Illuminate\Database\Eloquent\Builder;

use Illuminate\Database\Eloquent\Collection;

use Illuminate\Database\Eloquent\Model;

use Illuminate\Database\Eloquent\Relations\Concerns\InteractsWithDictionary;

abstract class HasOneOrMany extends Relation

{

    use InteractsWithDictionary;

    /**

     * The foreign key of the parent model.

     *

     * @var string

     */

    protected $foreignKey;

    /**

     * The local key of the parent model.

     *

     * @var string

     */

    protected $localKey;

    /**

     * Create a new has one or many relationship instance.

     *

     * @param  \Illuminate\Database\Eloquent\Builder  $query

     * @param  \Illuminate\Database\Eloquent\Model  $parent

     * @param  string  $foreignKey

     * @param  string  $localKey

     * @return void

     */

    public function __construct(Builder $query, Model $parent, $foreignKey, $localKey)

    {

        $this->localKey = $localKey;

        $this->foreignKey = $foreignKey;

        parent::__construct($query, $parent);

    }

    /**

     * Create and return an un-saved instance of the related model.

     *

     * @param  array  $attributes

     * @return \Illuminate\Database\Eloquent\Model

     */

    public function make(array $attributes = [])

    {

        return tap($this->related->newInstance($attributes), function ($instance) {

            $this->setForeignAttributesForCreate($instance);

        });

    }

    /**

     * Create and return an un-saved instance of the related models.

     *

     * @param  iterable  $records

     * @return \Illuminate\Database\Eloquent\Collection

     */

    public function makeMany($records)

    {

        $instances = $this->related->newCollection();

        foreach ($records as $record) {

            $instances->push($this->make($record));

        }

        return $instances;

    }

    /**

     * Set the base constraints on the relation query.

     *

     * @return void

     */

    public function addConstraints()

    {

        if (static::$constraints) {

            $query = $this->getRelationQuery();

            $query->where($this->foreignKey, '=', $this->getParentKey());

            $query->whereNotNull($this->foreignKey);

        }

    }

    /**

     * Set the constraints for an eager load of the relation.

     *

     * @param  array  $models

     * @return void

     */

    public function addEagerConstraints(array $models)

    {

        $whereIn = $this->whereInMethod($this->parent, $this->localKey);

        $this->getRelationQuery()->{$whereIn}(

            $this->foreignKey, $this->getKeys($models, $this->localKey)

        );

    }

    /**

     * Match the eagerly loaded results to their single parents.

     *

     * @param  array  $models

     * @param  \Illuminate\Database\Eloquent\Collection  $results

     * @param  string  $relation

     * @return array

     */

    public function matchOne(array $models, Collection $results, $relation)

    {

        return $this->matchOneOrMany($models, $results, $relation, 'one');

    }

    /**

     * Match the eagerly loaded results to their many parents.

     *

     * @param  array  $models

     * @param  \Illuminate\Database\Eloquent\Collection  $results

     * @param  string  $relation

     * @return array

     */

    public function matchMany(array $models, Collection $results, $relation)

    {

        return $this->matchOneOrMany($models, $results, $relation, 'many');

    }

    /**

     * Match the eagerly loaded results to their many parents.

     *

     * @param  array  $models

     * @param  \Illuminate\Database\Eloquent\Collection  $results

     * @param  string  $relation

     * @param  string  $type

     * @return array

     */

    protected function matchOneOrMany(array $models, Collection $results, $relation, $type)

    {

        $dictionary = $this->buildDictionary($results);

        // Once we have the dictionary we can simply spin through the parent models to

        // link them up with their children using the keyed dictionary to make the

        // matching very convenient and easy work. Then we'll just return them.

        foreach ($models as $model) {

            if (isset($dictionary[$key = $this->getDictionaryKey($model->getAttribute($this->localKey))])) {

                $model->setRelation(

                    $relation, $this->getRelationValue($dictionary, $key, $type)

                );

            }

        }

        return $models;

    }

    /**

     * Get the value of a relationship by one or many type.

     *

     * @param  array  $dictionary

     * @param  string  $key

     * @param  string  $type

     * @return mixed

     */

    protected function getRelationValue(array $dictionary, $key, $type)

    {

        $value = $dictionary[$key];

        return $type === 'one' ? reset($value) : $this->related->newCollection($value);

    }

    /**

     * Build model dictionary keyed by the relation's foreign key.

     *

     * @param  \Illuminate\Database\Eloquent\Collection  $results

     * @return array

     */

    protected function buildDictionary(Collection $results)

    {

        $foreign = $this->getForeignKeyName();

        return $results->mapToDictionary(function ($result) use ($foreign) {

            return [$this->getDictionaryKey($result->{$foreign}) => $result];

        })->all();

    }

    /**

     * Find a model by its primary key or return a new instance of the related model.

     *

     * @param  mixed  $id

     * @param  array  $columns

     * @return \Illuminate\Support\Collection|\Illuminate\Database\Eloquent\Model

     */

    public function findOrNew($id, $columns = ['*'])

    {

        if (is_null($instance = $this->find($id, $columns))) {

            $instance = $this->related->newInstance();

            $this->setForeignAttributesForCreate($instance);

        }

        return $instance;

    }

    /**

     * Get the first related model record matching the attributes or instantiate it.

     *

     * @param  array  $attributes

     * @param  array  $values

     * @return \Illuminate\Database\Eloquent\Model

     */

    public function firstOrNew(array $attributes = [], array $values = [])

    {

        if (is_null($instance = $this->where($attributes)->first())) {

            $instance = $this->related->newInstance(array_merge($attributes, $values));

            $this->setForeignAttributesForCreate($instance);

        }

        return $instance;

    }

    /**

     * Get the first related record matching the attributes or create it.

     *

     * @param  array  $attributes

     * @param  array  $values

     * @return \Illuminate\Database\Eloquent\Model

     */

    public function firstOrCreate(array $attributes = [], array $values = [])

    {

        if (is_null($instance = $this->where($attributes)->first())) {

            $instance = $this->create(array_merge($attributes, $values));

        }

        return $instance;

    }

    /**

     * Create or update a related record matching the attributes, and fill it with values.

     *

     * @param  array  $attributes

     * @param  array  $values

     * @return \Illuminate\Database\Eloquent\Model

     */

    public function updateOrCreate(array $attributes, array $values = [])

    {

        return tap($this->firstOrNew($attributes), function ($instance) use ($values) {

            $instance->fill($values);

            $instance->save();

        });

    }

    /**

     * Attach a model instance to the parent model.

     *

     * @param  \Illuminate\Database\Eloquent\Model  $model

     * @return \Illuminate\Database\Eloquent\Model|false

     */

    public function save(Model $model)

    {

        $this->setForeignAttributesForCreate($model);

        return $model->save() ? $model : false;

    }

    /**

     * Attach a model instance without raising any events to the parent model.

     *

     * @param  \Illuminate\Database\Eloquent\Model  $model

     * @return \Illuminate\Database\Eloquent\Model|false

     */

    public function saveQuietly(Model $model)

    {

        return Model::withoutEvents(function () use ($model) {

            return $this->save($model);

        });

    }

    /**

     * Attach a collection of models to the parent instance.

     *

     * @param  iterable  $models

     * @return iterable

     */

    public function saveMany($models)

    {

        foreach ($models as $model) {

            $this->save($model);

        }

        return $models;

    }

    /**

     * Attach a collection of models to the parent instance without raising any events to the parent model.

     *

     * @param  iterable  $models

     * @return iterable

     */

    public function saveManyQuietly($models)

    {

        return Model::withoutEvents(function () use ($models) {

            return $this->saveMany($models);

        });

    }

    /**

     * Create a new instance of the related model.

     *

     * @param  array  $attributes

     * @return \Illuminate\Database\Eloquent\Model

     */

    public function create(array $attributes = [])

    {

        return tap($this->related->newInstance($attributes), function ($instance) {

            $this->setForeignAttributesForCreate($instance);

            $instance->save();

        });

    }

    /**

     * Create a new instance of the related model without raising any events to the parent model.

     *

     * @param  array  $attributes

     * @return \Illuminate\Database\Eloquent\Model

     */

    public function createQuietly(array $attributes = [])

    {

        return Model::withoutEvents(fn () => $this->create($attributes));

    }

    /**

     * Create a new instance of the related model. Allow mass-assignment.

     *

     * @param  array  $attributes

     * @return \Illuminate\Database\Eloquent\Model

     */

    public function forceCreate(array $attributes = [])

    {

        $attributes[$this->getForeignKeyName()] = $this->getParentKey();

        return $this->related->forceCreate($attributes);

    }

    /**

     * Create a Collection of new instances of the related model.

     *

     * @param  iterable  $records

     * @return \Illuminate\Database\Eloquent\Collection

     */

    public function createMany(iterable $records)

    {

        $instances = $this->related->newCollection();

        foreach ($records as $record) {

            $instances->push($this->create($record));

        }

        return $instances;

    }

    /**

     * Set the foreign ID for creating a related model.

     *

     * @param  \Illuminate\Database\Eloquent\Model  $model

     * @return void

     */

    protected function setForeignAttributesForCreate(Model $model)

    {

        $model->setAttribute($this->getForeignKeyName(), $this->getParentKey());

    }

    /**

     * Add the constraints for a relationship 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 = ['*'])

    {

        if ($query->getQuery()->from == $parentQuery->getQuery()->from) {

            return $this->getRelationExistenceQueryForSelfRelation($query, $parentQuery, $columns);

        }

        return parent::getRelationExistenceQuery($query, $parentQuery, $columns);

    }

    /**

     * Add the constraints for a relationship query on the same table.

     *

     * @param  \Illuminate\Database\Eloquent\Builder  $query

     * @param  \Illuminate\Database\Eloquent\Builder  $parentQuery

     * @param  array|mixed  $columns

     * @return \Illuminate\Database\Eloquent\Builder

     */

    public function getRelationExistenceQueryForSelfRelation(Builder $query, Builder $parentQuery, $columns = ['*'])

    {

        $query->from($query->getModel()->getTable().' as '.$hash = $this->getRelationCountHash());

        $query->getModel()->setTable($hash);

        return $query->select($columns)->whereColumn(

            $this->getQualifiedParentKeyName(), '=', $hash.'.'.$this->getForeignKeyName()

        );

    }

    /**

     * Get the key for comparing against the parent key in "has" query.

     *

     * @return string

     */

    public function getExistenceCompareKey()

    {

        return $this->getQualifiedForeignKeyName();

    }

    /**

     * Get the key value of the parent's local key.

     *

     * @return mixed

     */

    public function getParentKey()

    {

        return $this->parent->getAttribute($this->localKey);

    }

    /**

     * Get the fully qualified parent key name.

     *

     * @return string

     */

    public function getQualifiedParentKeyName()

    {

        return $this->parent->qualifyColumn($this->localKey);

    }

    /**

     * Get the plain foreign key.

     *

     * @return string

     */

    public function getForeignKeyName()

    {

        $segments = explode('.', $this->getQualifiedForeignKeyName());

        return end($segments);

    }

    /**

     * Get the foreign key for the relationship.

     *

     * @return string

     */

    public function getQualifiedForeignKeyName()

    {

        return $this->foreignKey;

    }

    /**

     * Get the local key for the relationship.

     *

     * @return string

     */

    public function getLocalKeyName()

    {

        return $this->localKey;

    }

}