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706 lines
25 KiB
PHP
Executable File
706 lines
25 KiB
PHP
Executable File
<?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;
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use think\Db;
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use think\Exception;
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use think\Loader;
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use think\Model;
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use think\model\Pivot;
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class Relation
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{
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const HAS_ONE = 1;
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const HAS_MANY = 2;
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const HAS_MANY_THROUGH = 5;
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const BELONGS_TO = 3;
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const BELONGS_TO_MANY = 4;
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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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// 中间表模型
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protected $middle;
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// 当前关联类型
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protected $type;
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// 关联表外键
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protected $foreignKey;
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// 中间关联表外键
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protected $throughKey;
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// 关联表主键
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protected $localKey;
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// 数据表别名
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protected $alias;
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// 当前关联的JOIN类型
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protected $joinType;
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// 关联模型查询对象
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protected $query;
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// 关联查询条件
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protected $where;
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// 关联查询参数
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protected $option;
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/**
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* 架构函数
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* @access public
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* @param Model $model 上级模型对象
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*/
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public function __construct(Model $model)
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{
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$this->parent = $model;
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}
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/**
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* 获取当前关联信息
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* @access public
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* @param string $name 关联信息
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* @return array|string|integer
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*/
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public function getRelationInfo($name = '')
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{
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$info = [
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'type' => $this->type,
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'model' => $this->model,
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'middle' => $this->middle,
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'foreignKey' => $this->foreignKey,
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'localKey' => $this->localKey,
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'alias' => $this->alias,
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'joinType' => $this->joinType,
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'option' => $this->option,
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];
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return $name ? $info[$name] : $info;
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}
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// 获取关联数据
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public function getRelation($name)
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{
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// 执行关联定义方法
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$relation = $this->parent->$name();
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$foreignKey = $this->foreignKey;
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$localKey = $this->localKey;
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// 判断关联类型执行查询
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switch ($this->type) {
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case self::HAS_ONE:
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$result = $relation->where($foreignKey, $this->parent->$localKey)->find();
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break;
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case self::BELONGS_TO:
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$result = $relation->where($localKey, $this->parent->$foreignKey)->find();
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break;
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case self::HAS_MANY:
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$result = $relation->select();
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break;
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case self::HAS_MANY_THROUGH:
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$result = $relation->select();
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break;
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case self::BELONGS_TO_MANY:
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// 关联查询
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$pk = $this->parent->getPk();
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$condition['pivot.' . $localKey] = $this->parent->$pk;
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$result = $this->belongsToManyQuery($relation, $this->middle, $foreignKey, $localKey, $condition)->select();
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foreach ($result as $set) {
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$pivot = [];
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foreach ($set->getData() as $key => $val) {
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if (strpos($key, '__')) {
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list($name, $attr) = explode('__', $key, 2);
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if ('pivot' == $name) {
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$pivot[$attr] = $val;
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unset($set->$key);
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}
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}
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}
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$set->pivot = new Pivot($pivot, $this->middle);
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}
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break;
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default:
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// 直接返回
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$result = $relation;
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}
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return $result;
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}
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/**
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* 预载入关联查询 返回数据集
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* @access public
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* @param array $resultSet 数据集
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* @param string $relation 关联名
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* @param string $class 数据集对象名 为空表示数组
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* @return array
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*/
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public function eagerlyResultSet($resultSet, $relation, $class = '')
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{
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/** @var array $relations */
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$relations = is_string($relation) ? explode(',', $relation) : $relation;
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foreach ($relations as $key => $relation) {
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$subRelation = '';
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$closure = false;
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if ($relation instanceof \Closure) {
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$closure = $relation;
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$relation = $key;
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}
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if (strpos($relation, '.')) {
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list($relation, $subRelation) = explode('.', $relation);
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}
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// 执行关联方法
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$model = $this->parent->$relation();
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// 获取关联信息
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$localKey = $this->localKey;
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$foreignKey = $this->foreignKey;
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switch ($this->type) {
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case self::HAS_ONE:
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case self::BELONGS_TO:
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foreach ($resultSet as $result) {
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// 模型关联组装
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$this->match($this->model, $relation, $result);
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}
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break;
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case self::HAS_MANY:
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$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($range)) {
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$this->where[$foreignKey] = ['in', $range];
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$data = $this->eagerlyOneToMany($model, [
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$foreignKey => [
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'in',
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$range,
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],
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], $relation, $subRelation, $closure);
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// 关联数据封装
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foreach ($resultSet as $result) {
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if (!isset($data[$result->$localKey])) {
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$data[$result->$localKey] = [];
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}
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$result->setAttr($relation, $this->resultSetBuild($data[$result->$localKey], $class));
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}
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}
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break;
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case self::BELONGS_TO_MANY:
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$pk = $resultSet[0]->getPk();
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$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->$pk)) {
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$range[] = $result->$pk;
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}
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}
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if (!empty($range)) {
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// 查询关联数据
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$data = $this->eagerlyManyToMany($model, [
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'pivot.' . $localKey => [
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'in',
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$range,
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],
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], $relation, $subRelation);
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// 关联数据封装
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foreach ($resultSet as $result) {
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if (!isset($data[$result->$pk])) {
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$data[$result->$pk] = [];
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}
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$result->setAttr($relation, $this->resultSetBuild($data[$result->$pk], $class));
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}
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}
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break;
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}
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}
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return $resultSet;
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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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* @param string $class 数据集类名
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* @return mixed
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*/
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protected function resultSetBuild($resultSet, $class = '')
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{
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return $class ? new $class($resultSet) : $resultSet;
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}
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/**
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* 预载入关联查询 返回模型对象
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* @access public
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* @param Model $result 数据对象
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* @param string $relation 关联名
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* @param string $class 数据集对象名 为空表示数组
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* @return Model
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*/
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public function eagerlyResult($result, $relation, $class = '')
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{
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$relations = is_string($relation) ? explode(',', $relation) : $relation;
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foreach ($relations as $key => $relation) {
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$subRelation = '';
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$closure = false;
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if ($relation instanceof \Closure) {
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$closure = $relation;
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$relation = $key;
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}
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if (strpos($relation, '.')) {
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list($relation, $subRelation) = explode('.', $relation);
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}
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// 执行关联方法
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$model = $this->parent->$relation();
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$localKey = $this->localKey;
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$foreignKey = $this->foreignKey;
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switch ($this->type) {
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case self::HAS_ONE:
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case self::BELONGS_TO:
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// 模型关联组装
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$this->match($this->model, $relation, $result);
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break;
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case self::HAS_MANY:
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if (isset($result->$localKey)) {
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$data = $this->eagerlyOneToMany($model, [$foreignKey => $result->$localKey], $relation, $subRelation, $closure);
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// 关联数据封装
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if (!isset($data[$result->$localKey])) {
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$data[$result->$localKey] = [];
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}
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$result->setAttr($relation, $this->resultSetBuild($data[$result->$localKey], $class));
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}
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break;
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case self::BELONGS_TO_MANY:
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$pk = $result->getPk();
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if (isset($result->$pk)) {
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$pk = $result->$pk;
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// 查询管理数据
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$data = $this->eagerlyManyToMany($model, ['pivot.' . $localKey => $pk], $relation, $subRelation);
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// 关联数据封装
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if (!isset($data[$pk])) {
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$data[$pk] = [];
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}
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$result->setAttr($relation, $this->resultSetBuild($data[$pk], $class));
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}
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break;
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}
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}
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return $result;
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}
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/**
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* 一对一 关联模型预查询拼装
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* @access public
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* @param string $model 模型名称
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* @param string $relation 关联名
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* @param Model $result 模型对象实例
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* @return void
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*/
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protected function match($model, $relation, &$result)
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{
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// 重新组装模型数据
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foreach ($result->getData() as $key => $val) {
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if (strpos($key, '__')) {
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list($name, $attr) = explode('__', $key, 2);
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if ($name == $relation) {
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$list[$name][$attr] = $val;
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unset($result->$key);
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}
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}
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}
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$result->setAttr($relation, !isset($list[$relation]) ? null : (new $model($list[$relation]))->isUpdate(true));
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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 object $model 关联模型对象
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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 string $subRelation 子关联
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* @param bool $closure
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* @return array
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*/
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protected function eagerlyOneToMany($model, $where, $relation, $subRelation = '', $closure = false)
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{
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$foreignKey = $this->foreignKey;
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// 预载入关联查询 支持嵌套预载入
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if ($closure) {
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call_user_func_array($closure, [ & $model]);
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}
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$list = $model->where($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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* 多对多 关联模型预查询
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* @access public
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* @param object $model 关联模型对象
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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 string $subRelation 子关联
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* @return array
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*/
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protected function eagerlyManyToMany($model, $where, $relation, $subRelation = '')
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{
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$foreignKey = $this->foreignKey;
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$localKey = $this->localKey;
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// 预载入关联查询 支持嵌套预载入
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$list = $this->belongsToManyQuery($model, $this->middle, $foreignKey, $localKey, $where)->with($subRelation)->select();
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// 组装模型数据
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$data = [];
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foreach ($list as $set) {
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$pivot = [];
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foreach ($set->getData() as $key => $val) {
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if (strpos($key, '__')) {
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list($name, $attr) = explode('__', $key, 2);
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if ('pivot' == $name) {
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$pivot[$attr] = $val;
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unset($set->$key);
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}
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}
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}
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$set->pivot = new Pivot($pivot, $this->middle);
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$data[$pivot[$localKey]][] = $set;
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}
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return $data;
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}
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/**
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* 设置当前关联定义的数据表别名
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* @access public
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* @param array $alias 别名定义
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* @return $this
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*/
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public function setAlias($alias)
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{
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$this->alias = $alias;
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return $this;
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}
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/**
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* HAS ONE 关联定义
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* @access public
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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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* @return $this
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*/
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public function hasOne($model, $foreignKey, $localKey, $alias = [], $joinType = 'INNER')
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{
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$this->type = self::HAS_ONE;
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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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// 返回关联的模型对象
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return $this;
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}
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/**
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* BELONGS TO 关联定义
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* @access public
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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 $otherKey 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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* @return $this
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*/
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public function belongsTo($model, $foreignKey, $otherKey, $alias = [], $joinType = 'INNER')
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{
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// 记录当前关联信息
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$this->type = self::BELONGS_TO;
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$this->model = $model;
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$this->foreignKey = $foreignKey;
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$this->localKey = $otherKey;
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$this->alias = $alias;
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$this->joinType = $joinType;
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$this->query = (new $model)->db();
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// 返回关联的模型对象
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return $this;
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}
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/**
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* HAS MANY 关联定义
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* @access public
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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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* @return $this
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*/
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public function hasMany($model, $foreignKey, $localKey, $alias)
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{
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// 记录当前关联信息
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$this->type = self::HAS_MANY;
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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->query = (new $model)->db();
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// 返回关联的模型对象
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return $this;
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}
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/**
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* HAS MANY 远程关联定义
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* @access public
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* @param string $model 模型名
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* @param string $through 中间模型名
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* @param string $firstkey 关联外键
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* @param string $secondKey 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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* @return $this
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*/
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public function hasManyThrough($model, $through, $foreignKey, $throughKey, $localKey, $alias)
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{
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// 记录当前关联信息
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$this->type = self::HAS_MANY_THROUGH;
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$this->model = $model;
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$this->middle = $through;
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$this->foreignKey = $foreignKey;
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$this->throughKey = $throughKey;
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$this->localKey = $localKey;
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$this->alias = $alias;
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$this->query = (new $model)->db();
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// 返回关联的模型对象
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return $this;
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}
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/**
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* BELONGS TO MANY 关联定义
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* @access public
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* @param string $model 模型名
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* @param string $table 中间表名
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* @param string $foreignKey 关联模型外键
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* @param string $localKey 当前模型关联键
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* @param array $alias 别名定义
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* @return $this
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*/
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public function belongsToMany($model, $table, $foreignKey, $localKey, $alias)
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{
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// 记录当前关联信息
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$this->type = self::BELONGS_TO_MANY;
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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->middle = $table;
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$this->alias = $alias;
|
|
$this->query = (new $model)->db();
|
|
// 返回关联的模型对象
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* BELONGS TO MANY 关联查询
|
|
* @access public
|
|
* @param object $model 关联模型对象
|
|
* @param string $table 中间表名
|
|
* @param string $foreignKey 关联模型关联键
|
|
* @param string $localKey 当前模型关联键
|
|
* @param array $condition 关联查询条件
|
|
* @return \think\db\Query|string
|
|
*/
|
|
protected function belongsToManyQuery($model, $table, $foreignKey, $localKey, $condition = [])
|
|
{
|
|
// 关联查询封装
|
|
$tableName = $model->getTable();
|
|
$relationFk = $model->getPk();
|
|
return $model::field($tableName . '.*')
|
|
->field(true, false, $table, 'pivot', 'pivot__')
|
|
->join($table . ' pivot', 'pivot.' . $foreignKey . '=' . $tableName . '.' . $relationFk)
|
|
->where($condition);
|
|
}
|
|
|
|
/**
|
|
* 保存（新增）当前关联数据对象
|
|
* @access public
|
|
* @param mixed $data 数据 可以使用数组 关联模型对象 和 关联对象的主键
|
|
* @param array $pivot 中间表额外数据
|
|
* @return integer
|
|
*/
|
|
public function save($data, array $pivot = [])
|
|
{
|
|
// 判断关联类型
|
|
switch ($this->type) {
|
|
case self::HAS_ONE:
|
|
case self::BELONGS_TO:
|
|
case self::HAS_MANY:
|
|
if ($data instanceof Model) {
|
|
$data = $data->getData();
|
|
}
|
|
// 保存关联表数据
|
|
$data[$this->foreignKey] = $this->parent->{$this->localKey};
|
|
$model = new $this->model;
|
|
return $model->save($data);
|
|
case self::BELONGS_TO_MANY:
|
|
// 保存关联表/中间表数据
|
|
return $this->attach($data, $pivot);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 批量保存当前关联数据对象
|
|
* @access public
|
|
* @param array $dataSet 数据集
|
|
* @param array $pivot 中间表额外数据
|
|
* @return integer
|
|
*/
|
|
public function saveAll(array $dataSet, array $pivot = [])
|
|
{
|
|
$result = false;
|
|
foreach ($dataSet as $key => $data) {
|
|
// 判断关联类型
|
|
switch ($this->type) {
|
|
case self::HAS_MANY:
|
|
$data[$this->foreignKey] = $this->parent->{$this->localKey};
|
|
$result = $this->save($data);
|
|
break;
|
|
case self::BELONGS_TO_MANY:
|
|
// TODO
|
|
$result = $this->attach($data, !empty($pivot) ? $pivot[$key] : []);
|
|
break;
|
|
}
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* 附加关联的一个中间表数据
|
|
* @access public
|
|
* @param mixed $data 数据 可以使用数组、关联模型对象 或者 关联对象的主键
|
|
* @param array $pivot 中间表额外数据
|
|
* @return integer
|
|
*/
|
|
public function attach($data, $pivot = [])
|
|
{
|
|
if (is_array($data)) {
|
|
// 保存关联表数据
|
|
$model = new $this->model;
|
|
$model->save($data);
|
|
$id = $model->getLastInsID();
|
|
} elseif (is_numeric($data) || is_string($data)) {
|
|
// 根据关联表主键直接写入中间表
|
|
$id = $data;
|
|
} elseif ($data instanceof Model) {
|
|
// 根据关联表主键直接写入中间表
|
|
$relationFk = $data->getPk();
|
|
$id = $data->$relationFk;
|
|
}
|
|
|
|
if ($id) {
|
|
// 保存中间表数据
|
|
$pk = $this->parent->getPk();
|
|
$pivot[$this->localKey] = $this->parent->$pk;
|
|
$pivot[$this->foreignKey] = $id;
|
|
$query = clone $this->parent->db();
|
|
return $query->table($this->middle)->insert($pivot);
|
|
} else {
|
|
throw new Exception('miss relation data');
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 解除关联的一个中间表数据
|
|
* @access public
|
|
* @param integer|array $data 数据 可以使用关联对象的主键
|
|
* @param bool $relationDel 是否同时删除关联表数据
|
|
* @return integer
|
|
*/
|
|
public function detach($data, $relationDel = false)
|
|
{
|
|
if (is_array($data)) {
|
|
$id = $data;
|
|
} elseif (is_numeric($data) || is_string($data)) {
|
|
// 根据关联表主键直接写入中间表
|
|
$id = $data;
|
|
} elseif ($data instanceof Model) {
|
|
// 根据关联表主键直接写入中间表
|
|
$relationFk = $data->getPk();
|
|
$id = $data->$relationFk;
|
|
}
|
|
// 删除中间表数据
|
|
$pk = $this->parent->getPk();
|
|
$pivot[$this->localKey] = $this->parent->$pk;
|
|
if (isset($id)) {
|
|
$pivot[$this->foreignKey] = is_array($id) ? ['in', $id] : $id;
|
|
}
|
|
$query = clone $this->parent->db();
|
|
$query->table($this->middle)->where($pivot)->delete();
|
|
|
|
// 删除关联表数据
|
|
if (isset($id) && $relationDel) {
|
|
$model = $this->model;
|
|
$model::destroy($id);
|
|
}
|
|
}
|
|
|
|
public function __call($method, $args)
|
|
{
|
|
if ($this->query) {
|
|
switch ($this->type) {
|
|
case self::HAS_MANY:
|
|
if (isset($this->where)) {
|
|
$this->query->where($this->where);
|
|
} elseif (isset($this->parent->{$this->localKey})) {
|
|
// 关联查询带入关联条件
|
|
$this->query->where($this->foreignKey, $this->parent->{$this->localKey});
|
|
}
|
|
break;
|
|
case self::HAS_MANY_THROUGH:
|
|
$through = $this->middle;
|
|
$model = $this->model;
|
|
$alias = Loader::parseName(basename(str_replace('\\', '/', $model)));
|
|
$throughTable = $through::getTable();
|
|
$pk = (new $this->model)->getPk();
|
|
$throughKey = $this->throughKey;
|
|
$modelTable = $this->parent->getTable();
|
|
$this->query->field($alias . '.*')->alias($alias)
|
|
->join($throughTable, $throughTable . '.' . $pk . '=' . $alias . '.' . $throughKey)
|
|
->join($modelTable, $modelTable . '.' . $this->localKey . '=' . $throughTable . '.' . $this->foreignKey)
|
|
->where($throughTable . '.' . $this->foreignKey, $this->parent->{$this->localKey});
|
|
break;
|
|
case self::BELONGS_TO_MANY:
|
|
// TODO
|
|
|
|
}
|
|
$result = call_user_func_array([$this->query, $method], $args);
|
|
if ($result instanceof \think\db\Query) {
|
|
$this->option = $result->getOptions();
|
|
return $this;
|
|
} else {
|
|
$this->option = [];
|
|
return $result;
|
|
}
|
|
} else {
|
|
throw new Exception('method not exists:' . __CLASS__ . '->' . $method);
|
|
}
|
|
}
|
|
|
|
}
|