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<?php |
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// +---------------------------------------------------------------------- |
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// | ThinkPHP [ WE CAN DO IT JUST THINK ] |
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// +---------------------------------------------------------------------- |
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// | Copyright (c) 2006~2019 http://thinkphp.cn All rights reserved. |
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// +---------------------------------------------------------------------- |
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// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 ) |
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// +---------------------------------------------------------------------- |
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// | Author: liu21st <[email protected]> |
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// +---------------------------------------------------------------------- |
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declare (strict_types = 1); |
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namespace think\model\relation; |
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use Closure; |
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use think\App; |
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use think\Collection; |
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use think\db\Query; |
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use think\Model; |
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use think\model\Relation; |
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/** |
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* 一对多关联类 |
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*/ |
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class HasMany extends Relation |
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{ |
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/** |
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* 架构函数 |
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* @access public |
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* @param Model $parent 上级模型对象 |
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* @param string $model 模型名 |
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* @param string $foreignKey 关联外键 |
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* @param string $localKey 当前模型主键 |
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*/ |
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public function __construct(Model $parent, string $model, string $foreignKey, string $localKey) |
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{ |
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$this->parent = $parent; |
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$this->model = $model; |
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$this->foreignKey = $foreignKey; |
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$this->localKey = $localKey; |
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$this->query = (new $model)->db(); |
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if (get_class($parent) == $model) { |
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$this->selfRelation = true; |
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} |
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} |
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/** |
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* 延迟获取关联数据 |
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* @access public |
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* @param array $subRelation 子关联名 |
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* @param Closure $closure 闭包查询条件 |
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* @return Collection |
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*/ |
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public function getRelation(array $subRelation = [], Closure $closure = null): Collection |
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{ |
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if ($closure) { |
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$closure($this->query); |
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} |
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return $this->query |
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->where($this->foreignKey, $this->parent->{$this->localKey}) |
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->relation($subRelation) |
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->select() |
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->setParent(clone $this->parent); |
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} |
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/** |
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* 预载入关联查询 |
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* @access public |
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* @param array $resultSet 数据集 |
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* @param string $relation 当前关联名 |
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* @param array $subRelation 子关联名 |
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* @param Closure $closure 闭包 |
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* @return void |
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*/ |
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public function eagerlyResultSet(array &$resultSet, string $relation, array $subRelation, Closure $closure = null): void |
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{ |
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$localKey = $this->localKey; |
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$range = []; |
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foreach ($resultSet as $result) { |
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// 获取关联外键列表 |
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if (isset($result->$localKey)) { |
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$range[] = $result->$localKey; |
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} |
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} |
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if (!empty($range)) { |
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$where = [ |
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[$this->foreignKey, 'in', $range], |
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]; |
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$data = $this->eagerlyOneToMany($where, $relation, $subRelation, $closure); |
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// 关联属性名 |
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$attr = App::parseName($relation); |
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// 关联数据封装 |
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foreach ($resultSet as $result) { |
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$pk = $result->$localKey; |
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if (!isset($data[$pk])) { |
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$data[$pk] = []; |
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} |
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$result->setRelation($attr, $this->resultSetBuild($data[$pk], clone $this->parent)); |
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} |
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} |
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} |
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/** |
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* 预载入关联查询 |
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* @access public |
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* @param Model $result 数据对象 |
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* @param string $relation 当前关联名 |
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* @param array $subRelation 子关联名 |
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* @param Closure $closure 闭包 |
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* @return void |
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*/ |
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public function eagerlyResult(Model $result, string $relation, array $subRelation = [], Closure $closure = null): void |
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{ |
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$localKey = $this->localKey; |
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if (isset($result->$localKey)) { |
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$pk = $result->$localKey; |
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$where = [$this->foreignKey, '=', $pk]; |
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$data = $this->eagerlyOneToMany([$where], $relation, $subRelation, $closure); |
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// 关联数据封装 |
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if (!isset($data[$pk])) { |
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$data[$pk] = []; |
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} |
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$result->setRelation(App::parseName($relation), $this->resultSetBuild($data[$pk], clone $this->parent)); |
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} |
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} |
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/** |
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* 关联统计 |
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* @access public |
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* @param Model $result 数据对象 |
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* @param Closure $closure 闭包 |
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* @param string $aggregate 聚合查询方法 |
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* @param string $field 字段 |
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* @param string $name 统计字段别名 |
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* @return integer |
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*/ |
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public function relationCount(Model $result, Closure $closure, string $aggregate = 'count', string $field = '*', string &$name = null) |
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{ |
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$localKey = $this->localKey; |
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if (!isset($result->$localKey)) { |
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return 0; |
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} |
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if ($closure) { |
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$closure($this->query, $name); |
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} |
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return $this->query |
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->where($this->foreignKey, '=', $result->$localKey) |
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->$aggregate($field); |
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} |
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/** |
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* 创建关联统计子查询 |
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* @access public |
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* @param Closure $closure 闭包 |
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* @param string $aggregate 聚合查询方法 |
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* @param string $field 字段 |
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* @param string $name 统计字段别名 |
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* @return string |
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*/ |
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public function getRelationCountQuery(Closure $closure = null, string $aggregate = 'count', string $field = '*', string &$name = null): string |
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{ |
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if ($closure) { |
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$return = $closure($this->query); |
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if ($return && is_string($return)) { |
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$name = $return; |
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} |
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} |
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return $this->query->alias($aggregate . '_table') |
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->whereExp($aggregate . '_table.' . $this->foreignKey, '=' . $this->parent->getTable() . '.' . $this->localKey) |
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->fetchSql() |
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->$aggregate($field); |
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} |
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/** |
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* 一对多 关联模型预查询 |
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* @access public |
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* @param array $where 关联预查询条件 |
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* @param string $relation 关联名 |
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* @param array $subRelation 子关联 |
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* @param Closure $closure |
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* @return array |
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*/ |
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protected function eagerlyOneToMany(array $where, string $relation, array $subRelation = [], Closure $closure = null): array |
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{ |
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$foreignKey = $this->foreignKey; |
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$this->query->removeWhereField($this->foreignKey); |
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// 预载入关联查询 支持嵌套预载入 |
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if ($closure) { |
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$closure($this->query); |
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} |
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$list = $this->query->where($where)->with($subRelation)->select(); |
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// 组装模型数据 |
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$data = []; |
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foreach ($list as $set) { |
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$data[$set->$foreignKey][] = $set; |
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} |
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return $data; |
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} |
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/** |
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* 保存（新增）当前关联数据对象 |
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* @access public |
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* @param mixed $data 数据 可以使用数组 关联模型对象 |
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* @param boolean $replace 是否自动识别更新和写入 |
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* @return Model|false |
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*/ |
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public function save($data, bool $replace = true) |
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{ |
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$model = $this->make(); |
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return $model->replace($replace)->save($data) ? $model : false; |
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} |
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/** |
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* 创建关联对象实例 |
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* @param array|Model $data |
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* @return Model |
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*/ |
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public function make($data = []): Model |
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{ |
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if ($data instanceof Model) { |
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$data = $data->getData(); |
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} |
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// 保存关联表数据 |
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$data[$this->foreignKey] = $this->parent->{$this->localKey}; |
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return new $this->model($data); |
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} |
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/** |
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* 批量保存当前关联数据对象 |
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* @access public |
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* @param iterable $dataSet 数据集 |
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* @param boolean $replace 是否自动识别更新和写入 |
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* @return array|false |
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*/ |
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public function saveAll(iterable $dataSet, bool $replace = true) |
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{ |
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$result = []; |
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foreach ($dataSet as $key => $data) { |
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$result[] = $this->save($data, $replace); |
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} |
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return empty($result) ? false : $result; |
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} |
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/** |
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* 根据关联条件查询当前模型 |
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* @access public |
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* @param string $operator 比较操作符 |
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* @param integer $count 个数 |
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* @param string $id 关联表的统计字段 |
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* @param string $joinType JOIN类型 |
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* @return Query |
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*/ |
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public function has(string $operator = '>=', int $count = 1, string $id = '*', string $joinType = 'INNER'): Query |
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{ |
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$table = $this->query->getTable(); |
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$model = App::classBaseName($this->parent); |
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$relation = App::classBaseName($this->model); |
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return $this->parent->db() |
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->alias($model) |
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->field($model . '.*') |
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->join([$table => $relation], $model . '.' . $this->localKey . '=' . $relation . '.' . $this->foreignKey, $joinType) |
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->group($relation . '.' . $this->foreignKey) |
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->having('count(' . $id . ')' . $operator . $count); |
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} |
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/** |
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* 根据关联条件查询当前模型 |
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* @access public |
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* @param mixed $where 查询条件（数组或者闭包） |
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* @param mixed $fields 字段 |
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* @param string $joinType JOIN类型 |
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* @return Query |
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*/ |
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public function hasWhere($where = [], $fields = null, string $joinType = ''): Query |
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{ |
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$table = $this->query->getTable(); |
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$model = App::classBaseName($this->parent); |
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$relation = App::classBaseName($this->model); |
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if (is_array($where)) { |
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$this->getQueryWhere($where, $relation); |
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} |
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|
311
|
|
|
$fields = $this->getRelationQueryFields($fields, $model); |
|
312
|
|
|
|
|
313
|
|
|
return $this->parent->db() |
|
314
|
|
|
->alias($model) |
|
315
|
|
|
->group($model . '.' . $this->localKey) |
|
316
|
|
|
->field($fields) |
|
317
|
|
|
->join([$table => $relation], $model . '.' . $this->localKey . '=' . $relation . '.' . $this->foreignKey) |
|
318
|
|
|
->where($where); |
|
319
|
|
|
} |
|
320
|
|
|
|
|
321
|
|
|
/** |
|
322
|
|
|
* 执行基础查询（仅执行一次） |
|
323
|
|
|
* @access protected |
|
324
|
|
|
* @return void |
|
325
|
|
|
*/ |
|
326
|
|
|
protected function baseQuery(): void |
|
327
|
|
|
{ |
|
328
|
|
|
if (empty($this->baseQuery)) { |
|
329
|
|
|
if (isset($this->parent->{$this->localKey})) { |
|
330
|
|
|
// 关联查询带入关联条件 |
|
331
|
|
|
$this->query->where($this->foreignKey, '=', $this->parent->{$this->localKey}); |
|
332
|
|
|
} |
|
333
|
|
|
|
|
334
|
|
|
$this->baseQuery = true; |
|
335
|
|
|
} |
|
336
|
|
|
} |
|
337
|
|
|
|
|
338
|
|
|
} |
|
339
|
|
|
|
top-think /
framework
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