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412 lines
22 KiB
PHTML
412 lines
22 KiB
PHTML
5 years ago
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<?php
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// +----------------------------------------------------------------------
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// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
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// +----------------------------------------------------------------------
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// | Copyright (c) 2006-2014 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\Model;
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/**
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* ThinkPHP关联模型扩展
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*/
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class RelationModel extends Model {
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const HAS_ONE = 1;
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const BELONGS_TO = 2;
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const HAS_MANY = 3;
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const MANY_TO_MANY= 4;
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// 关联定义
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protected $_link = array();
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/**
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* 动态方法实现
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* @access public
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* @param string $method 方法名称
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* @param array $args 调用参数
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* @return mixed
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*/
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public function __call($method,$args) {
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if(strtolower(substr($method,0,8))=='relation'){
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$type = strtoupper(substr($method,8));
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if(in_array($type,array('ADD','SAVE','DEL'),true)) {
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array_unshift($args,$type);
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return call_user_func_array(array(&$this, 'opRelation'), $args);
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}
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}else{
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return parent::__call($method,$args);
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}
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}
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/**
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* 得到关联的数据表名
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* @access public
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* @return string
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*/
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public function getRelationTableName($relation) {
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$relationTable = !empty($this->tablePrefix) ? $this->tablePrefix : '';
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$relationTable .= $this->tableName?$this->tableName:$this->name;
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$relationTable .= '_'.$relation->getModelName();
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return strtolower($relationTable);
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}
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// 查询成功后的回调方法
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protected function _after_find(&$result,$options) {
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// 获取关联数据 并附加到结果中
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if(!empty($options['link']))
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$this->getRelation($result,$options['link']);
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}
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// 查询数据集成功后的回调方法
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protected function _after_select(&$result,$options) {
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// 获取关联数据 并附加到结果中
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if(!empty($options['link']))
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$this->getRelations($result,$options['link']);
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}
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// 写入成功后的回调方法
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protected function _after_insert($data,$options) {
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// 关联写入
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if(!empty($options['link']))
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$this->opRelation('ADD',$data,$options['link']);
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}
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// 更新成功后的回调方法
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protected function _after_update($data,$options) {
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// 关联更新
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if(!empty($options['link']))
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$this->opRelation('SAVE',$data,$options['link']);
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}
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// 删除成功后的回调方法
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protected function _after_delete($data,$options) {
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// 关联删除
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if(!empty($options['link']))
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$this->opRelation('DEL',$data,$options['link']);
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}
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/**
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* 对保存到数据库的数据进行处理
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* @access protected
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* @param mixed $data 要操作的数据
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* @return boolean
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*/
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protected function _facade($data) {
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$this->_before_write($data);
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return $data;
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}
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/**
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* 获取返回数据集的关联记录
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* @access protected
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* @param array $resultSet 返回数据
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* @param string|array $name 关联名称
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* @return array
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*/
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protected function getRelations(&$resultSet,$name='') {
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// 获取记录集的主键列表
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foreach($resultSet as $key=>$val) {
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$val = $this->getRelation($val,$name);
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$resultSet[$key] = $val;
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}
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return $resultSet;
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}
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/**
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* 获取返回数据的关联记录
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* @access protected
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* @param mixed $result 返回数据
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* @param string|array $name 关联名称
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* @param boolean $return 是否返回关联数据本身
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* @return array
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*/
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protected function getRelation(&$result,$name='',$return=false) {
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if(!empty($this->_link)) {
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foreach($this->_link as $key=>$val) {
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$mappingName = !empty($val['mapping_name'])?$val['mapping_name']:$key; // 映射名称
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if(empty($name) || true === $name || $mappingName == $name || (is_array($name) && in_array($mappingName,$name))) {
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$mappingType = !empty($val['mapping_type'])?$val['mapping_type']:$val; // 关联类型
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$mappingClass = !empty($val['class_name'])?$val['class_name']:$key; // 关联类名
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$mappingFields = !empty($val['mapping_fields'])?$val['mapping_fields']:'*'; // 映射字段
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$mappingCondition = !empty($val['condition'])?$val['condition']:'1=1'; // 关联条件
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$mappingKey =!empty($val['mapping_key'])? $val['mapping_key'] : $this->getPk(); // 关联键名
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if(strtoupper($mappingClass)==strtoupper($this->name)) {
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// 自引用关联 获取父键名
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$mappingFk = !empty($val['parent_key'])? $val['parent_key'] : 'parent_id';
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}else{
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$mappingFk = !empty($val['foreign_key'])?$val['foreign_key']:strtolower($this->name).'_id'; // 关联外键
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}
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// 获取关联模型对象
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$model = D($mappingClass);
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switch($mappingType) {
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case self::HAS_ONE:
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$pk = $result[$mappingKey];
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$mappingCondition .= " AND {$mappingFk}='{$pk}'";
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$relationData = $model->where($mappingCondition)->field($mappingFields)->find();
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if (!empty($val['relation_deep'])){
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$model->getRelation($relationData,$val['relation_deep']);
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}
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break;
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case self::BELONGS_TO:
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if(strtoupper($mappingClass)==strtoupper($this->name)) {
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// 自引用关联 获取父键名
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$mappingFk = !empty($val['parent_key'])? $val['parent_key'] : 'parent_id';
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}else{
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$mappingFk = !empty($val['foreign_key'])?$val['foreign_key']:strtolower($model->getModelName()).'_id'; // 关联外键
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}
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$fk = $result[$mappingFk];
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$mappingCondition .= " AND {$model->getPk()}='{$fk}'";
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$relationData = $model->where($mappingCondition)->field($mappingFields)->find();
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if (!empty($val['relation_deep'])){
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$model->getRelation($relationData,$val['relation_deep']);
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}
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break;
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case self::HAS_MANY:
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$pk = $result[$mappingKey];
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$mappingCondition .= " AND {$mappingFk}='{$pk}'";
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$mappingOrder = !empty($val['mapping_order'])?$val['mapping_order']:'';
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$mappingLimit = !empty($val['mapping_limit'])?$val['mapping_limit']:'';
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// 延时获取关联记录
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$relationData = $model->where($mappingCondition)->field($mappingFields)->order($mappingOrder)->limit($mappingLimit)->select();
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if (!empty($val['relation_deep'])){
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foreach($relationData as $key=>$data){
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$model->getRelation($data,$val['relation_deep']);
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$relationData[$key] = $data;
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}
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}
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break;
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case self::MANY_TO_MANY:
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$pk = $result[$mappingKey];
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$prefix = $this->tablePrefix;
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$mappingCondition = " {$mappingFk}='{$pk}'";
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$mappingOrder = $val['mapping_order'];
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$mappingLimit = $val['mapping_limit'];
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$mappingRelationFk = $val['relation_foreign_key']?$val['relation_foreign_key']:$model->getModelName().'_id';
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if(isset($val['relation_table'])){
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$mappingRelationTable = preg_replace_callback("/__([A-Z_-]+)__/sU", function($match) use($prefix){ return $prefix.strtolower($match[1]);}, $val['relation_table']);
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}else{
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$mappingRelationTable = $this->getRelationTableName($model);
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}
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$sql = "SELECT b.{$mappingFields} FROM {$mappingRelationTable} AS a, ".$model->getTableName()." AS b WHERE a.{$mappingRelationFk} = b.{$model->getPk()} AND a.{$mappingCondition}";
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if(!empty($val['condition'])) {
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$sql .= ' AND '.$val['condition'];
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}
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if(!empty($mappingOrder)) {
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$sql .= ' ORDER BY '.$mappingOrder;
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}
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if(!empty($mappingLimit)) {
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$sql .= ' LIMIT '.$mappingLimit;
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}
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$relationData = $this->query($sql);
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if (!empty($val['relation_deep'])){
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foreach($relationData as $key=>$data){
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$model->getRelation($data,$val['relation_deep']);
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$relationData[$key] = $data;
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}
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}
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break;
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}
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if(!$return){
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if(isset($val['as_fields']) && in_array($mappingType,array(self::HAS_ONE,self::BELONGS_TO)) ) {
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// 支持直接把关联的字段值映射成数据对象中的某个字段
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// 仅仅支持HAS_ONE BELONGS_TO
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$fields = explode(',',$val['as_fields']);
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foreach ($fields as $field){
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if(strpos($field,':')) {
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list($relationName,$nick) = explode(':',$field);
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$result[$nick] = $relationData[$relationName];
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}else{
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$result[$field] = $relationData[$field];
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}
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}
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}else{
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$result[$mappingName] = $relationData;
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}
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unset($relationData);
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}else{
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return $relationData;
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}
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}
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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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* 操作关联数据
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* @access protected
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* @param string $opType 操作方式 ADD SAVE DEL
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* @param mixed $data 数据对象
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* @param string $name 关联名称
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* @return mixed
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*/
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protected function opRelation($opType,$data='',$name='') {
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$result = false;
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if(empty($data) && !empty($this->data)){
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$data = $this->data;
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}elseif(!is_array($data)){
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// 数据无效返回
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return false;
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}
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if(!empty($this->_link)) {
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// 遍历关联定义
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foreach($this->_link as $key=>$val) {
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// 操作制定关联类型
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$mappingName = $val['mapping_name']?$val['mapping_name']:$key; // 映射名称
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if(empty($name) || true === $name || $mappingName == $name || (is_array($name) && in_array($mappingName,$name)) ) {
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// 操作制定的关联
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$mappingType = !empty($val['mapping_type'])?$val['mapping_type']:$val; // 关联类型
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$mappingClass = !empty($val['class_name'])?$val['class_name']:$key; // 关联类名
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$mappingKey =!empty($val['mapping_key'])? $val['mapping_key'] : $this->getPk(); // 关联键名
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// 当前数据对象主键值
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$pk = $data[$mappingKey];
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if(strtoupper($mappingClass)==strtoupper($this->name)) {
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// 自引用关联 获取父键名
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$mappingFk = !empty($val['parent_key'])? $val['parent_key'] : 'parent_id';
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}else{
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$mappingFk = !empty($val['foreign_key'])?$val['foreign_key']:strtolower($this->name).'_id'; // 关联外键
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}
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if(!empty($val['condition'])) {
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$mappingCondition = $val['condition'];
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}else{
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$mappingCondition = array();
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$mappingCondition[$mappingFk] = $pk;
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}
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// 获取关联model对象
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$model = D($mappingClass);
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$mappingData = isset($data[$mappingName])?$data[$mappingName]:false;
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if(!empty($mappingData) || $opType == 'DEL') {
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switch($mappingType) {
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case self::HAS_ONE:
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switch (strtoupper($opType)){
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case 'ADD': // 增加关联数据
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$mappingData[$mappingFk] = $pk;
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$result = $model->add($mappingData);
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break;
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case 'SAVE': // 更新关联数据
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$result = $model->where($mappingCondition)->save($mappingData);
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break;
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case 'DEL': // 根据外键删除关联数据
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$result = $model->where($mappingCondition)->delete();
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break;
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}
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break;
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case self::BELONGS_TO:
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break;
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case self::HAS_MANY:
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switch (strtoupper($opType)){
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case 'ADD' : // 增加关联数据
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$model->startTrans();
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foreach ($mappingData as $val){
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$val[$mappingFk] = $pk;
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$result = $model->add($val);
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}
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$model->commit();
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break;
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case 'SAVE' : // 更新关联数据
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$model->startTrans();
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$pk = $model->getPk();
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foreach ($mappingData as $vo){
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if(isset($vo[$pk])) {// 更新数据
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$mappingCondition = "$pk ={$vo[$pk]}";
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$result = $model->where($mappingCondition)->save($vo);
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}else{ // 新增数据
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$vo[$mappingFk] = $data[$mappingKey];
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$result = $model->add($vo);
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}
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}
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$model->commit();
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break;
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case 'DEL' : // 删除关联数据
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$result = $model->where($mappingCondition)->delete();
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break;
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}
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break;
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case self::MANY_TO_MANY:
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$mappingRelationFk = $val['relation_foreign_key']?$val['relation_foreign_key']:$model->getModelName().'_id';// 关联
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$prefix = $this->tablePrefix;
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if(isset($val['relation_table'])){
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$mappingRelationTable = preg_replace_callback("/__([A-Z_-]+)__/sU", function($match) use($prefix){ return $prefix.strtolower($match[1]);}, $val['relation_table']);
|
||
|
|
}else{
|
||
|
|
$mappingRelationTable = $this->getRelationTableName($model);
|
||
|
|
}
|
||
|
|
if(is_array($mappingData)) {
|
||
|
|
$ids = array();
|
||
|
|
foreach ($mappingData as $vo)
|
||
|
|
$ids[] = $vo[$mappingKey];
|
||
|
|
$relationId = implode(',',$ids);
|
||
|
|
}
|
||
|
|
switch (strtoupper($opType)){
|
||
|
|
case 'ADD': // 增加关联数据
|
||
|
|
if(isset($relationId)) {
|
||
|
|
$this->startTrans();
|
||
|
|
// 插入关联表数据
|
||
|
|
$sql = 'INSERT INTO '.$mappingRelationTable.' ('.$mappingFk.','.$mappingRelationFk.') SELECT a.'.$this->getPk().',b.'.$model->getPk().' FROM '.$this->getTableName().' AS a ,'.$model->getTableName()." AS b where a.".$this->getPk().' ='. $pk.' AND b.'.$model->getPk().' IN ('.$relationId.") ";
|
||
|
|
$result = $model->execute($sql);
|
||
|
|
if(false !== $result)
|
||
|
|
// 提交事务
|
||
|
|
$this->commit();
|
||
|
|
else
|
||
|
|
// 事务回滚
|
||
|
|
$this->rollback();
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case 'SAVE': // 更新关联数据
|
||
|
|
if(isset($relationId)) {
|
||
|
|
$this->startTrans();
|
||
|
|
// 删除关联表数据
|
||
|
|
$this->table($mappingRelationTable)->where($mappingCondition)->delete();
|
||
|
|
// 插入关联表数据
|
||
|
|
$sql = 'INSERT INTO '.$mappingRelationTable.' ('.$mappingFk.','.$mappingRelationFk.') SELECT a.'.$this->getPk().',b.'.$model->getPk().' FROM '.$this->getTableName().' AS a ,'.$model->getTableName()." AS b where a.".$this->getPk().' ='. $pk.' AND b.'.$model->getPk().' IN ('.$relationId.") ";
|
||
|
|
$result = $model->execute($sql);
|
||
|
|
if(false !== $result)
|
||
|
|
// 提交事务
|
||
|
|
$this->commit();
|
||
|
|
else
|
||
|
|
// 事务回滚
|
||
|
|
$this->rollback();
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case 'DEL': // 根据外键删除中间表关联数据
|
||
|
|
$result = $this->table($mappingRelationTable)->where($mappingCondition)->delete();
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
if (!empty($val['relation_deep'])){
|
||
|
|
$model->opRelation($opType,$mappingData,$val['relation_deep']);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return $result;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 进行关联查询
|
||
|
|
* @access public
|
||
|
|
* @param mixed $name 关联名称
|
||
|
|
* @return Model
|
||
|
|
*/
|
||
|
|
public function relation($name) {
|
||
|
|
$this->options['link'] = $name;
|
||
|
|
return $this;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 关联数据获取 仅用于查询后
|
||
|
|
* @access public
|
||
|
|
* @param string $name 关联名称
|
||
|
|
* @return array
|
||
|
|
*/
|
||
|
|
public function relationGet($name) {
|
||
|
|
if(empty($this->data))
|
||
|
|
return false;
|
||
|
|
return $this->getRelation($this->data,$name,true);
|
||
|
|
}
|
||
|
|
}
|