| Total Complexity | 46 |
| Total Lines | 385 |
| Duplicated Lines | 0 % |
| Changes | 1 | ||
| Bugs | 0 | Features | 0 |
Complex classes like EmbedsOneOrMany often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use EmbedsOneOrMany, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 11 | abstract class EmbedsOneOrMany extends Relation |
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| 12 | { |
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| 13 | /** |
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| 14 | * The local key of the parent model. |
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| 15 | * @var string |
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| 16 | */ |
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| 17 | protected $localKey; |
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| 18 | |||
| 19 | /** |
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| 20 | * The foreign key of the parent model. |
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| 21 | * @var string |
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| 22 | */ |
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| 23 | protected $foreignKey; |
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| 24 | |||
| 25 | /** |
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| 26 | * The "name" of the relationship. |
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| 27 | * @var string |
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| 28 | */ |
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| 29 | protected $relation; |
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| 30 | |||
| 31 | /** |
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| 32 | * Create a new embeds many relationship instance. |
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| 33 | * @param Builder $query |
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| 34 | * @param Model $parent |
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| 35 | * @param Model $related |
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| 36 | * @param string $localKey |
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| 37 | * @param string $foreignKey |
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| 38 | * @param string $relation |
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| 39 | */ |
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| 40 | public function __construct(Builder $query, Model $parent, Model $related, $localKey, $foreignKey, $relation) |
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| 41 | { |
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| 42 | $this->query = $query; |
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| 43 | $this->parent = $parent; |
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| 44 | $this->related = $related; |
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| 45 | $this->localKey = $localKey; |
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| 46 | $this->foreignKey = $foreignKey; |
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| 47 | $this->relation = $relation; |
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| 48 | |||
| 49 | // If this is a nested relation, we need to get the parent query instead. |
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| 50 | if ($parentRelation = $this->getParentRelation()) { |
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| 51 | $this->query = $parentRelation->getQuery(); |
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| 52 | } |
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| 53 | |||
| 54 | $this->addConstraints(); |
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| 55 | } |
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| 56 | |||
| 57 | /** |
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| 58 | * {@inheritdoc} |
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| 59 | */ |
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| 60 | public function addConstraints() |
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| 61 | { |
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| 62 | if (static::$constraints) { |
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| 63 | $this->query->where($this->getQualifiedParentKeyName(), '=', $this->getParentKey()); |
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| 64 | } |
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| 65 | } |
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| 66 | |||
| 67 | /** |
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| 68 | * {@inheritdoc} |
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| 69 | */ |
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| 70 | public function addEagerConstraints(array $models) |
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| 71 | { |
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| 72 | // There are no eager loading constraints. |
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| 73 | } |
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| 74 | |||
| 75 | /** |
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| 76 | * {@inheritdoc} |
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| 77 | */ |
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| 78 | public function match(array $models, Collection $results, $relation) |
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| 79 | { |
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| 80 | foreach ($models as $model) { |
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| 81 | $results = $model->$relation()->getResults(); |
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| 82 | |||
| 83 | $model->setParentRelation($this); |
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| 84 | |||
| 85 | $model->setRelation($relation, $results); |
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| 86 | } |
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| 87 | |||
| 88 | return $models; |
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| 89 | } |
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| 90 | |||
| 91 | /** |
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| 92 | * Shorthand to get the results of the relationship. |
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| 93 | * @param array $columns |
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| 94 | * @return Collection |
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| 95 | */ |
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| 96 | public function get($columns = ['*']) |
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| 97 | { |
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| 98 | return $this->getResults(); |
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| 99 | } |
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| 100 | |||
| 101 | /** |
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| 102 | * Get the number of embedded models. |
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| 103 | * @return int |
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| 104 | */ |
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| 105 | public function count() |
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| 106 | { |
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| 107 | return count($this->getEmbedded()); |
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| 108 | } |
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| 109 | |||
| 110 | /** |
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| 111 | * Attach a model instance to the parent model. |
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| 112 | * @param Model $model |
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| 113 | * @return Model|bool |
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| 114 | */ |
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| 115 | public function save(Model $model) |
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| 116 | { |
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| 117 | $model->setParentRelation($this); |
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| 118 | |||
| 119 | return $model->save() ? $model : false; |
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| 120 | } |
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| 121 | |||
| 122 | /** |
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| 123 | * Attach a collection of models to the parent instance. |
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| 124 | * @param Collection|array $models |
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| 125 | * @return Collection|array |
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| 126 | */ |
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| 127 | public function saveMany($models) |
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| 128 | { |
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| 129 | foreach ($models as $model) { |
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| 130 | $this->save($model); |
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| 131 | } |
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| 132 | |||
| 133 | return $models; |
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| 134 | } |
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| 135 | |||
| 136 | /** |
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| 137 | * Create a new instance of the related model. |
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| 138 | * @param array $attributes |
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| 139 | * @return Model |
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| 140 | */ |
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| 141 | public function create(array $attributes = []) |
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| 142 | { |
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| 143 | // Here we will set the raw attributes to avoid hitting the "fill" method so |
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| 144 | // that we do not have to worry about a mass accessor rules blocking sets |
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| 145 | // on the models. Otherwise, some of these attributes will not get set. |
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| 146 | $instance = $this->related->newInstance($attributes); |
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| 147 | |||
| 148 | $instance->setParentRelation($this); |
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| 149 | |||
| 150 | $instance->save(); |
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| 151 | |||
| 152 | return $instance; |
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| 153 | } |
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| 154 | |||
| 155 | /** |
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| 156 | * Create an array of new instances of the related model. |
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| 157 | * @param array $records |
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| 158 | * @return array |
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| 159 | */ |
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| 160 | public function createMany(array $records) |
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| 161 | { |
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| 162 | $instances = []; |
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| 163 | |||
| 164 | foreach ($records as $record) { |
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| 165 | $instances[] = $this->create($record); |
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| 166 | } |
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| 167 | |||
| 168 | return $instances; |
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| 169 | } |
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| 170 | |||
| 171 | /** |
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| 172 | * Transform single ID, single Model or array of Models into an array of IDs. |
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| 173 | * @param mixed $ids |
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| 174 | * @return array |
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| 175 | */ |
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| 176 | protected function getIdsArrayFrom($ids) |
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| 177 | { |
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| 178 | if ($ids instanceof \Illuminate\Support\Collection) { |
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| 179 | $ids = $ids->all(); |
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| 180 | } |
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| 181 | |||
| 182 | if (! is_array($ids)) { |
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| 183 | $ids = [$ids]; |
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| 184 | } |
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| 185 | |||
| 186 | foreach ($ids as &$id) { |
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| 187 | if ($id instanceof Model) { |
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| 188 | $id = $id->getKey(); |
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| 189 | } |
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| 190 | } |
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| 191 | |||
| 192 | return $ids; |
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| 193 | } |
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| 194 | |||
| 195 | /** |
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| 196 | * {@inheritdoc} |
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| 197 | */ |
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| 198 | protected function getEmbedded() |
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| 199 | { |
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| 200 | // Get raw attributes to skip relations and accessors. |
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| 201 | $attributes = $this->parent->getAttributes(); |
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| 202 | |||
| 203 | // Get embedded models form parent attributes. |
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| 204 | $embedded = isset($attributes[$this->localKey]) ? (array) $attributes[$this->localKey] : null; |
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| 205 | |||
| 206 | return $embedded; |
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| 207 | } |
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| 208 | |||
| 209 | /** |
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| 210 | * {@inheritdoc} |
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| 211 | */ |
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| 212 | protected function setEmbedded($records) |
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| 213 | { |
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| 214 | // Assign models to parent attributes array. |
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| 215 | $attributes = $this->parent->getAttributes(); |
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| 216 | $attributes[$this->localKey] = $records; |
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| 217 | |||
| 218 | // Set raw attributes to skip mutators. |
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| 219 | $this->parent->setRawAttributes($attributes); |
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| 220 | |||
| 221 | // Set the relation on the parent. |
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| 222 | return $this->parent->setRelation($this->relation, $records === null ? null : $this->getResults()); |
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| 223 | } |
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| 224 | |||
| 225 | /** |
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| 226 | * Get the foreign key value for the relation. |
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| 227 | * @param mixed $id |
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| 228 | * @return mixed |
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| 229 | */ |
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| 230 | protected function getForeignKeyValue($id) |
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| 231 | { |
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| 232 | if ($id instanceof Model) { |
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| 233 | $id = $id->getKey(); |
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| 234 | } |
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| 235 | |||
| 236 | // Convert the id to MongoId if necessary. |
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| 237 | return $this->getBaseQuery()->convertKey($id); |
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| 238 | } |
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| 239 | |||
| 240 | /** |
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| 241 | * Convert an array of records to a Collection. |
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| 242 | * @param array $records |
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| 243 | * @return Collection |
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| 244 | */ |
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| 245 | protected function toCollection(array $records = []) |
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| 246 | { |
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| 247 | $models = []; |
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| 248 | |||
| 249 | foreach ($records as $attributes) { |
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| 250 | $models[] = $this->toModel($attributes); |
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| 251 | } |
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| 252 | |||
| 253 | if (count($models) > 0) { |
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| 254 | $models = $this->eagerLoadRelations($models); |
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| 255 | } |
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| 256 | |||
| 257 | return $this->related->newCollection($models); |
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| 258 | } |
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| 259 | |||
| 260 | /** |
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| 261 | * Create a related model instanced. |
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| 262 | * @param array $attributes |
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| 263 | * @return Model |
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| 264 | */ |
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| 265 | protected function toModel($attributes = []) |
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| 266 | { |
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| 267 | if ($attributes === null) { |
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| 268 | return; |
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| 269 | } |
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| 270 | |||
| 271 | $connection = $this->related->getConnection(); |
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| 272 | |||
| 273 | $model = $this->related->newFromBuilder( |
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| 274 | (array) $attributes, |
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| 275 | $connection ? $connection->getName() : null |
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| 276 | ); |
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| 277 | |||
| 278 | $model->setParentRelation($this); |
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| 279 | |||
| 280 | $model->setRelation($this->foreignKey, $this->parent); |
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| 281 | |||
| 282 | // If you remove this, you will get segmentation faults! |
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| 283 | $model->setHidden(array_merge($model->getHidden(), [$this->foreignKey])); |
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| 284 | |||
| 285 | return $model; |
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| 286 | } |
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| 287 | |||
| 288 | /** |
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| 289 | * Get the relation instance of the parent. |
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| 290 | * @return Relation |
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| 291 | */ |
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| 292 | protected function getParentRelation() |
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| 293 | { |
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| 294 | return $this->parent->getParentRelation(); |
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| 295 | } |
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| 296 | |||
| 297 | /** |
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| 298 | * {@inheritdoc} |
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| 299 | */ |
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| 300 | public function getQuery() |
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| 301 | { |
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| 302 | // Because we are sharing this relation instance to models, we need |
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| 303 | // to make sure we use separate query instances. |
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| 304 | return clone $this->query; |
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| 305 | } |
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| 306 | |||
| 307 | /** |
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| 308 | * {@inheritdoc} |
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| 309 | */ |
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| 310 | public function getBaseQuery() |
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| 311 | { |
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| 312 | // Because we are sharing this relation instance to models, we need |
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| 313 | // to make sure we use separate query instances. |
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| 314 | return clone $this->query->getQuery(); |
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| 315 | } |
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| 316 | |||
| 317 | /** |
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| 318 | * Check if this relation is nested in another relation. |
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| 319 | * @return bool |
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| 320 | */ |
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| 321 | protected function isNested() |
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| 322 | { |
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| 323 | return $this->getParentRelation() != null; |
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| 324 | } |
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| 325 | |||
| 326 | /** |
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| 327 | * Get the fully qualified local key name. |
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| 328 | * @param string $glue |
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| 329 | * @return string |
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| 330 | */ |
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| 331 | protected function getPathHierarchy($glue = '.') |
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| 338 | } |
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| 339 | |||
| 340 | /** |
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| 341 | * {@inheritdoc} |
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| 342 | */ |
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| 343 | public function getQualifiedParentKeyName() |
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| 344 | { |
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| 345 | if ($parentRelation = $this->getParentRelation()) { |
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| 346 | return $parentRelation->getPathHierarchy().'.'.$this->parent->getKeyName(); |
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| 347 | } |
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| 348 | |||
| 349 | return $this->parent->getKeyName(); |
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| 350 | } |
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| 351 | |||
| 352 | /** |
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| 353 | * Get the primary key value of the parent. |
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| 354 | * @return string |
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| 355 | */ |
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| 356 | protected function getParentKey() |
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| 357 | { |
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| 358 | return $this->parent->getKey(); |
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| 359 | } |
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| 360 | |||
| 361 | /** |
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| 362 | * Return update values. |
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| 363 | * @param $array |
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| 364 | * @param string $prepend |
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| 365 | * @return array |
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| 366 | */ |
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| 367 | public static function getUpdateValues($array, $prepend = '') |
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| 376 | } |
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| 377 | |||
| 378 | /** |
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| 379 | * Get the foreign key for the relationship. |
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| 380 | * @return string |
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| 381 | */ |
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| 382 | public function getQualifiedForeignKeyName() |
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| 383 | { |
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| 384 | return $this->foreignKey; |
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| 385 | } |
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| 386 | |||
| 387 | /** |
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| 388 | * Get the name of the "where in" method for eager loading. |
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| 389 | * @param \Illuminate\Database\Eloquent\Model $model |
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| 390 | * @param string $key |
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| 391 | * @return string |
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| 392 | */ |
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| 393 | protected function whereInMethod(EloquentModel $model, $key) |
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| 396 | } |
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| 397 | } |
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| 398 |