77 lines
2.5 KiB
PHP
77 lines
2.5 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) 2006~2016 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\relation;
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use think\Model;
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use think\model\relation\OneToOne;
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class HasOne extends OneToOne
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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 关联主键
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* @param array $alias 别名定义
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* @param string $joinType JOIN类型
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*/
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public function __construct(Model $parent, $model, $foreignKey, $localKey, $alias = [], $joinType = 'INNER')
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{
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$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->alias = $alias;
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$this->joinType = $joinType;
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$this->query = (new $model)->db();
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}
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/**
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* 延迟获取关联数据
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* @access public
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*/
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public function getRelation()
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{
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// 执行关联定义方法
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$localKey = $this->localKey;
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// 判断关联类型执行查询
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return $this->query->where($this->foreignKey, $this->parent->$localKey)->find();
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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 Model $model 模型对象
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* @param mixed $where 查询条件（数组或者闭包）
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* @return Query
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*/
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public function hasWhere($model, $where = [])
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{
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$table = $this->query->getTable();
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if (is_array($where)) {
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foreach ($where as $key => $val) {
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if (false === strpos($key, '.')) {
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$where['b.' . $key] = $val;
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unset($where[$key]);
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}
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}
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}
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return $model->db()->alias('a')
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->field('a.*')
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->join($table . ' b', 'a.' . $this->localKey . '=b.' . $this->foreignKey, $this->joinType)
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->where($where);
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}
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}
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