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<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006~2017 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
namespace think\model;
use think\Db;
use think\db\Query;
use think\Model;
class Merge extends Model
{
protected $relationModel = []; // HAS ONE 关联的模型列表
protected $fk = ''; // 外键名 默认为主表名_id
protected $mapFields = []; // 需要处理的模型映射字段，避免混淆 array( id => 'user.id' )
/**
* 构造函数
* @access public
* @param array|object $data 数据
*/
public function __construct($data = [])
{
parent::__construct($data);
// 设置默认外键名 仅支持单一外键
if (empty($this->fk)) {
$this->fk = strtolower($this->name) . '_id';
}
}
/**
* 查找单条记录
* @access public
* @param mixed $data 主键值或者查询条件（闭包）
* @param string|array $with 关联预查询
* @param bool $cache 是否缓存
* @return \think\Model
*/
public static function get($data = null, $with = [], $cache = false)
{
$query = self::parseQuery($data, $with, $cache);
$query = self::attachQuery($query);
return $query->find($data);
}
/**
* 附加查询表达式
* @access protected
* @param \think\db\Query $query 查询对象
* @return \think\db\Query
*/
protected static function attachQuery($query)
{
$class = new static();
$master = $class->name;
$fields = self::getModelField($query, $master, '', $class->mapFields, $class->field);
$query->alias($master)->field($fields);
foreach ($class->relationModel as $key => $model) {
$name = is_int($key) ? $model : $key;
$table = is_int($key) ? $query->getTable($name) : $model;
$query->join($table . ' ' . $name, $name . '.' . $class->fk . '=' . $master . '.' . $class->getPk());
$fields = self::getModelField($query, $name, $table, $class->mapFields, $class->field);
$query->field($fields);
}
return $query;
}
/**
* 获取关联模型的字段 并解决混淆
* @access protected
* @param \think\db\Query $query 查询对象
* @param string $name 模型名称
* @param string $table 关联表名称
* @param array $map 字段映射
* @param array $fields 查询字段
* @return array
*/
protected static function getModelField($query, $name, $table = '', $map = [], $fields = [])
{
// 获取模型的字段信息
$fields = $fields ?: $query->getTableInfo($table, 'fields');
$array = [];
foreach ($fields as $field) {
if ($key = array_search($name . '.' . $field, $map)) {
// 需要处理映射字段
$array[] = $name . '.' . $field . ' AS ' . $key;
} else {
$array[] = $field;
}
}
return $array;
}
/**
* 查找所有记录
* @access public
* @param mixed $data 主键列表或者查询条件（闭包）
* @param array|string $with 关联预查询
* @param bool $cache
* @return array|false|string
*/
public static function all($data = null, $with = [], $cache = false)
{
$query = self::parseQuery($data, $with, $cache);
$query = self::attachQuery($query);
return $query->select($data);
}
/**
* 处理写入的模型数据
* @access public
* @param string $model 模型名称
* @param array $data 数据
* @return array
*/
protected function parseData($model, $data)
{
$item = [];
foreach ($data as $key => $val) {
if ($this->fk != $key && array_key_exists($key, $this->mapFields)) {
list($name, $key) = explode('.', $this->mapFields[$key]);
if ($model == $name) {
$item[$key] = $val;
}
} else {
$item[$key] = $val;
}
}
return $item;
}
/**
* 保存模型数据 以及关联数据
* @access public
* @param mixed $data 数据
* @param array $where 更新条件
* @param string $sequence 自增序列名
* @return false|int
* @throws \Exception
*/
public function save($data = [], $where = [], $sequence = null)
{
if (!empty($data)) {
// 数据自动验证
if (!$this->validateData($data)) {
return false;
}
// 数据对象赋值
foreach ($data as $key => $value) {
$this->setAttr($key, $value, $data);
}
if (!empty($where)) {
$this->isUpdate = true;
}
}
// 数据自动完成
$this->autoCompleteData($this->auto);
// 自动写入更新时间
if ($this->autoWriteTimestamp && $this->updateTime && !isset($this->data[$this->updateTime])) {
$this->setAttr($this->updateTime, null);
}
// 事件回调
if (false === $this->trigger('before_write', $this)) {
return false;
}
$db = $this->db();
$db->startTrans();
$pk = $this->getPk();
try {
if ($this->isUpdate) {
// 自动写入
$this->autoCompleteData($this->update);
if (false === $this->trigger('before_update', $this)) {
return false;
}
if (empty($where) && !empty($this->updateWhere)) {
$where = $this->updateWhere;
}
// 获取有更新的数据
$data = $this->getChangedData();
// 保留主键数据
foreach ($this->data as $key => $val) {
if ($this->isPk($key)) {
$data[$key] = $val;
}
}
// 处理模型数据
$data = $this->parseData($this->name, $data);
if (is_string($pk) && isset($data[$pk])) {
if (!isset($where[$pk])) {
unset($where);
$where[$pk] = $data[$pk];
}
unset($data[$pk]);
}
// 写入主表数据
$result = $db->strict(false)->where($where)->update($data);
// 写入附表数据
foreach ($this->relationModel as $key => $model) {
$name = is_int($key) ? $model : $key;
$table = is_int($key) ? $db->getTable($model) : $model;
// 处理关联模型数据
$data = $this->parseData($name, $data);
if (Db::table($table)->strict(false)->where($this->fk, $this->data[$this->getPk()])->update($data)) {
$result = 1;
}
}
// 新增回调
$this->trigger('after_update', $this);
} else {
// 自动写入
$this->autoCompleteData($this->insert);
// 自动写入创建时间
if ($this->autoWriteTimestamp && $this->createTime && !isset($this->data[$this->createTime])) {
$this->setAttr($this->createTime, null);
}
if (false === $this->trigger('before_insert', $this)) {
return false;
}
// 处理模型数据
$data = $this->parseData($this->name, $this->data);
// 写入主表数据
$result = $db->name($this->name)->strict(false)->insert($data);
if ($result) {
$insertId = $db->getLastInsID($sequence);
// 写入外键数据
if ($insertId) {
if (is_string($pk)) {
$this->data[$pk] = $insertId;
}
$this->data[$this->fk] = $insertId;
}
// 写入附表数据
$source = $this->data;
if ($insertId && is_string($pk) && isset($source[$pk]) && $this->fk != $pk) {
unset($source[$pk]);
}
foreach ($this->relationModel as $key => $model) {
$name = is_int($key) ? $model : $key;
$table = is_int($key) ? $db->getTable($model) : $model;
// 处理关联模型数据
$data = $this->parseData($name, $source);
Db::table($table)->strict(false)->insert($data);
}
}
// 标记为更新
$this->isUpdate = true;
// 新增回调
$this->trigger('after_insert', $this);
}
$db->commit();
// 写入回调
$this->trigger('after_write', $this);
$this->origin = $this->data;
return $result;
} catch (\Exception $e) {
$db->rollback();
throw $e;
}
}
/**
* 删除当前的记录 并删除关联数据
* @access public
* @return int
* @throws \Exception
*/
public function delete()
{
if (false === $this->trigger('before_delete', $this)) {
return false;
}
$db = $this->db();
$db->startTrans();
try {
$result = $db->delete($this->data);
if ($result) {
// 获取主键数据
$pk = $this->data[$this->getPk()];
// 删除关联数据
foreach ($this->relationModel as $key => $model) {
$table = is_int($key) ? $db->getTable($model) : $model;
$query = new Query;
$query->table($table)->where($this->fk, $pk)->delete();
}
}
$this->trigger('after_delete', $this);
$db->commit();
return $result;
} catch (\Exception $e) {
$db->rollback();
throw $e;
}
}
}
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