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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) 2006~2018 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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namespace think\model; |
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use think\db\Query; |
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use think\Exception; |
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use think\Model; |
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/** |
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* Class Relation |
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* @package think\model |
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* |
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* @mixin Query |
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*/ |
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abstract class Relation |
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{ |
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// 父模型对象 |
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protected $parent; |
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/** @var Model 当前关联的模型类 */ |
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protected $model; |
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/** @var Query 关联模型查询对象 */ |
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protected $query; |
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// 关联表外键 |
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protected $foreignKey; |
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// 关联表主键 |
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protected $localKey; |
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// 基础查询 |
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protected $baseQuery; |
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// 是否为自关联 |
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protected $selfRelation; |
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/** |
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* 获取关联的所属模型 |
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* @access public |
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* @return Model |
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*/ |
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public function getParent() |
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{ |
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return $this->parent; |
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} |
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/** |
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* 获取当前的关联模型类的实例 |
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* @access public |
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* @return Model |
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*/ |
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public function getModel() |
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{ |
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return $this->query->getModel(); |
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} |
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/** |
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* 获取当前的关联模型类的实例 |
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* @access public |
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* @return Query |
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*/ |
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public function getQuery() |
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{ |
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return $this->query; |
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} |
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/** |
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* 设置当前关联为自关联 |
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* @access public |
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* @param bool $self 是否自关联 |
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* @return $this |
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*/ |
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public function selfRelation($self = true) |
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{ |
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$this->selfRelation = $self; |
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return $this; |
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} |
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/** |
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* 当前关联是否为自关联 |
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* @access public |
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* @return bool |
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*/ |
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public function isSelfRelation() |
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{ |
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return $this->selfRelation; |
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} |
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/** |
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* 封装关联数据集 |
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* @access public |
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* @param array $resultSet 数据集 |
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* @return mixed |
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*/ |
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protected function resultSetBuild($resultSet) |
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{ |
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return (new $this->model)->toCollection($resultSet); |
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} |
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protected function getQueryFields($model) |
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{ |
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$fields = $this->query->getOptions('field'); |
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return $this->getRelationQueryFields($fields, $model); |
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} |
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protected function getRelationQueryFields($fields, $model) |
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{ |
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if ($fields) { |
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if (is_string($fields)) { |
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$fields = explode(',', $fields); |
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} |
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foreach ($fields as &$field) { |
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if (false === strpos($field, '.')) { |
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$field = $model . '.' . $field; |
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} |
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} |
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} else { |
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$fields = $model . '.*'; |
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} |
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return $fields; |
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} |
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protected function getQueryWhere(&$where, $relation) |
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{ |
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foreach ($where as $key => &$val) { |
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if (is_string($key)) { |
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$where[] = [false === strpos($key, '.') ? $relation . '.' . $key : $key, '=', $val]; |
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unset($where[$key]); |
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} elseif (isset($val[0]) && false === strpos($val[0], '.')) { |
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$val[0] = $relation . '.' . $val[0]; |
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} |
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} |
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} |
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/** |
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* 删除记录 |
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* @access public |
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* @param mixed $data 表达式 true 表示强制删除 |
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* @return int |
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* @throws Exception |
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* @throws PDOException |
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*/ |
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public function delete($data = null) |
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{ |
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return $this->query->delete($data); |
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} |
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/** |
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* 执行基础查询（仅执行一次） |
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* @access protected |
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* @return void |
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*/ |
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protected function baseQuery() |
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{} |
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public function __call($method, $args) |
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{ |
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if ($this->query) { |
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// 执行基础查询 |
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$this->baseQuery(); |
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$result = call_user_func_array([$this->query->getModel(), $method], $args); |
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return $result === $this->query && !in_array(strtolower($method), ['fetchsql', 'fetchpdo']) ? $this : $result; |
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} else { |
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throw new Exception('method not exists:' . __CLASS__ . '->' . $method); |
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} |
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} |
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} |
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