156 lines
3.6 KiB
PHP
156 lines
3.6 KiB
PHP
<?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 <liu21st@gmail.com>
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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对象实例
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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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* 获取关联的查询对象
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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 $fields;
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}
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/**
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* 执行基础查询（仅执行一次）
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* @access protected
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* @return void
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*/
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protected function baseQuery()
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{}
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public function __call($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, $method], $args);
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if ($result instanceof Query) {
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return $this;
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} else {
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$this->baseQuery = false;
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return $result;
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}
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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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