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323 lines
11 KiB
323 lines
11 KiB
4 years ago
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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 <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\db\Query;
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use think\Model;
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class Merge extends Model
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{
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protected $relationModel = []; // HAS ONE 关联的模型列表
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protected $fk = ''; // 外键名 默认为主表名_id
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protected $mapFields = []; // 需要处理的模型映射字段，避免混淆 array( id => 'user.id' )
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/**
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* 构造函数
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* @access public
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* @param array|object $data 数据
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*/
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public function __construct($data = [])
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{
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parent::__construct($data);
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// 设置默认外键名 仅支持单一外键
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if (empty($this->fk)) {
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$this->fk = strtolower($this->name) . '_id';
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}
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}
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/**
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* 查找单条记录
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* @access public
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* @param mixed $data 主键值或者查询条件（闭包）
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* @param string|array $with 关联预查询
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* @param bool $cache 是否缓存
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* @return \think\Model
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*/
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public static function get($data = null, $with = [], $cache = false)
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{
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$query = self::parseQuery($data, $with, $cache);
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$query = self::attachQuery($query);
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return $query->find($data);
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}
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/**
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* 附加查询表达式
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* @access protected
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* @param \think\db\Query $query 查询对象
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* @return \think\db\Query
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*/
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protected static function attachQuery($query)
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{
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$class = new static();
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$master = $class->name;
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$fields = self::getModelField($query, $master, '', $class->mapFields, $class->field);
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$query->alias($master)->field($fields);
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foreach ($class->relationModel as $key => $model) {
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$name = is_int($key) ? $model : $key;
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$table = is_int($key) ? $query->getTable($name) : $model;
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$query->join($table . ' ' . $name, $name . '.' . $class->fk . '=' . $master . '.' . $class->getPk());
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$fields = self::getModelField($query, $name, $table, $class->mapFields, $class->field);
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$query->field($fields);
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}
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return $query;
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}
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/**
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* 获取关联模型的字段 并解决混淆
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* @access protected
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* @param \think\db\Query $query 查询对象
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* @param string $name 模型名称
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* @param string $table 关联表名称
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* @param array $map 字段映射
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* @param array $fields 查询字段
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* @return array
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*/
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protected static function getModelField($query, $name, $table = '', $map = [], $fields = [])
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{
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// 获取模型的字段信息
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$fields = $fields ?: $query->getTableInfo($table, 'fields');
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$array = [];
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foreach ($fields as $field) {
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if ($key = array_search($name . '.' . $field, $map)) {
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// 需要处理映射字段
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$array[] = $name . '.' . $field . ' AS ' . $key;
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} else {
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$array[] = $field;
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}
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}
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return $array;
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}
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/**
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* 查找所有记录
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* @access public
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* @param mixed $data 主键列表或者查询条件（闭包）
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* @param array|string $with 关联预查询
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* @param bool $cache
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* @return array|false|string
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*/
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public static function all($data = null, $with = [], $cache = false)
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{
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$query = self::parseQuery($data, $with, $cache);
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$query = self::attachQuery($query);
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return $query->select($data);
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}
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/**
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* 处理写入的模型数据
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* @access public
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* @param string $model 模型名称
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* @param array $data 数据
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* @return array
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*/
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protected function parseData($model, $data)
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{
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$item = [];
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foreach ($data as $key => $val) {
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if ($this->fk != $key && array_key_exists($key, $this->mapFields)) {
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list($name, $key) = explode('.', $this->mapFields[$key]);
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if ($model == $name) {
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$item[$key] = $val;
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}
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} else {
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$item[$key] = $val;
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}
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}
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return $item;
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}
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/**
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* 保存模型数据 以及关联数据
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* @access public
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* @param mixed $data 数据
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* @param array $where 更新条件
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* @param string $sequence 自增序列名
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* @return false|int
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* @throws \Exception
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*/
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public function save($data = [], $where = [], $sequence = null)
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{
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if (!empty($data)) {
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// 数据自动验证
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if (!$this->validateData($data)) {
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return false;
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}
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// 数据对象赋值
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foreach ($data as $key => $value) {
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$this->setAttr($key, $value, $data);
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}
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if (!empty($where)) {
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$this->isUpdate = true;
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}
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}
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// 数据自动完成
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$this->autoCompleteData($this->auto);
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// 自动写入更新时间
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if ($this->autoWriteTimestamp && $this->updateTime && !isset($this->data[$this->updateTime])) {
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$this->setAttr($this->updateTime, null);
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}
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// 事件回调
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if (false === $this->trigger('before_write', $this)) {
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return false;
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}
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$db = $this->db();
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$db->startTrans();
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$pk = $this->getPk();
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try {
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if ($this->isUpdate) {
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// 自动写入
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$this->autoCompleteData($this->update);
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if (false === $this->trigger('before_update', $this)) {
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return false;
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}
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if (empty($where) && !empty($this->updateWhere)) {
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$where = $this->updateWhere;
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}
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// 获取有更新的数据
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$data = $this->getChangedData();
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// 保留主键数据
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foreach ($this->data as $key => $val) {
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if ($this->isPk($key)) {
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$data[$key] = $val;
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}
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}
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// 处理模型数据
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$data = $this->parseData($this->name, $data);
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if (is_string($pk) && isset($data[$pk])) {
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if (!isset($where[$pk])) {
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unset($where);
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$where[$pk] = $data[$pk];
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}
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unset($data[$pk]);
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}
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// 写入主表数据
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$result = $db->strict(false)->where($where)->update($data);
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// 写入附表数据
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foreach ($this->relationModel as $key => $model) {
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$name = is_int($key) ? $model : $key;
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$table = is_int($key) ? $db->getTable($model) : $model;
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// 处理关联模型数据
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$data = $this->parseData($name, $data);
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if (Db::table($table)->strict(false)->where($this->fk, $this->data[$this->getPk()])->update($data)) {
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$result = 1;
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}
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}
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// 新增回调
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$this->trigger('after_update', $this);
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} else {
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// 自动写入
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$this->autoCompleteData($this->insert);
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// 自动写入创建时间
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if ($this->autoWriteTimestamp && $this->createTime && !isset($this->data[$this->createTime])) {
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$this->setAttr($this->createTime, null);
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}
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if (false === $this->trigger('before_insert', $this)) {
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return false;
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}
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// 处理模型数据
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$data = $this->parseData($this->name, $this->data);
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// 写入主表数据
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$result = $db->name($this->name)->strict(false)->insert($data);
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if ($result) {
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$insertId = $db->getLastInsID($sequence);
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// 写入外键数据
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if ($insertId) {
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if (is_string($pk)) {
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$this->data[$pk] = $insertId;
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}
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$this->data[$this->fk] = $insertId;
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}
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// 写入附表数据
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$source = $this->data;
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if ($insertId && is_string($pk) && isset($source[$pk]) && $this->fk != $pk) {
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unset($source[$pk]);
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}
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foreach ($this->relationModel as $key => $model) {
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$name = is_int($key) ? $model : $key;
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$table = is_int($key) ? $db->getTable($model) : $model;
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// 处理关联模型数据
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$data = $this->parseData($name, $source);
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Db::table($table)->strict(false)->insert($data);
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}
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}
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// 标记为更新
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$this->isUpdate = true;
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// 新增回调
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$this->trigger('after_insert', $this);
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}
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$db->commit();
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// 写入回调
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$this->trigger('after_write', $this);
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$this->origin = $this->data;
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return $result;
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} catch (\Exception $e) {
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$db->rollback();
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throw $e;
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}
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}
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/**
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* 删除当前的记录 并删除关联数据
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* @access public
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* @return int
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* @throws \Exception
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*/
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public function delete()
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{
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if (false === $this->trigger('before_delete', $this)) {
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return false;
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}
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$db = $this->db();
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$db->startTrans();
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try {
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$result = $db->delete($this->data);
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if ($result) {
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// 获取主键数据
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$pk = $this->data[$this->getPk()];
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// 删除关联数据
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foreach ($this->relationModel as $key => $model) {
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$table = is_int($key) ? $db->getTable($model) : $model;
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$query = new Query;
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$query->table($table)->where($this->fk, $pk)->delete();
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}
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}
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$this->trigger('after_delete', $this);
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$db->commit();
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return $result;
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} catch (\Exception $e) {
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$db->rollback();
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throw $e;
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}
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}
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}
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