/*** ThinkPHP Model模型类* 实现了ORM和ActiveRecords模式* @category   Think* @package  Think* @subpackage  Core* @author    liu21st <liu21st@gmail.com>*/
class Model {// 操作状态const MODEL_INSERT          =   1;      //  插入模型数据const MODEL_UPDATE          =   2;      //  更新模型数据const MODEL_BOTH            =   3;      //  包含上面两种方式const MUST_VALIDATE         =   1;// 必须验证const EXISTS_VALIDATE       =   0;// 表单存在字段则验证const VALUE_VALIDATE        =   2;// 表单值不为空则验证// 当前使用的扩展模型private   $_extModel        =   null;// 当前数据库操作对象protected $db               =   null;// 主键名称protected $pk               =   'id';// 数据表前缀protected $tablePrefix      =   '';// 模型名称protected $name             =   '';// 数据库名称protected $dbName           =   '';//数据库配置protected $connection       =   '';// 数据表名（不包含表前缀）protected $tableName        =   '';// 实际数据表名（包含表前缀）protected $trueTableName    =   '';// 最近错误信息protected $error            =   '';// 数据表的所有字段信息protected $fields           =   array();// 数据信息protected $data             =   array();// 查询表达式参数protected $options          =   array();protected $_validate        =   array();  // 自动验证定义protected $_auto            =   array();  // 自动完成定义protected $_map             =   array();  // 字段映射定义protected $_scope           =   array();  // 命名范围定义// 是否自动检测数据表字段信息protected $autoCheckFields  =   true;// 是否批处理验证protected $patchValidate    =   false;// 链操作方法列表protected $methods          =   array('table','order','alias','having','group','lock','distinct','auto','filter','validate');/*** 架构函数* 取得DB类的实例对象 字段检查* @access public* @param string $name 模型名称* @param string $tablePrefix 表前缀* @param mixed $connection 数据库连接信息*/public function __construct($name='',$tablePrefix='',$connection='') {// 模型初始化$this->_initialize();// 获取模型名称if(!empty($name)) {if(strpos($name,'.')) { // 支持 数据库名.模型名的 定义//属性1-数据库名   属性2-模型表名(数据表名)list($this->dbName,$this->name) = explode('.',$name);}else{//模型名$this->name   =  $name;}}elseif(empty($this->name)){//模型名为空的情况$this->name =   $this->getModelName();}// 设置表前缀，检查$tablePrefix表前缀参数是否为Null，注意：不是检查表前缀参数是否为空if(is_null($tablePrefix)) {// 如果表前缀参数为Null表示没有前缀$this->tablePrefix = '';//没有前缀的情况}elseif('' != $tablePrefix) {//如果表前缀参数不为空$this->tablePrefix = $tablePrefix;}else{//默认执行：如果类中未指定表前缀，那么将采用系统默认指定的表前缀$this->tablePrefix = $this->tablePrefix?$this->tablePrefix:C('DB_PREFIX');}// 数据库初始化操作// 获取数据库操作对象// 当前模型有独立的数据库连接信息$this->db(0,empty($this->connection)?$connection:$this->connection);}/*** 自动检测数据表信息* @access protected* @return void*/protected function _checkTableInfo() {// 如果不是Model类 自动记录数据表信息// 只在第一次执行记录if(empty($this->fields)) {//默认执行// 如果数据表字段没有定义则自动获取//调试模式下不执行if(C('DB_FIELDS_CACHE')) {//字段缓存的启用$db   =  $this->dbName?$this->dbName:C('DB_NAME');//数据库名$fields = F('_fields/'.strtolower($db.'.'.$this->name));if($fields) {$version    =   C('DB_FIELD_VERISON');if(empty($version) || $fields['_version']== $version) {$this->fields   =   $fields;return ;}}}// 每次都会读取数据表信息$this->flush();}}/*** 获取字段信息并缓存* @access public* @return void*/public function flush() {//$this->db:数据库驱动类Db,class.php实例化对象，查看$this->db()方法// 缓存不存在则查询数据表信息//var_dump($this->db);//DbMysql.class.php驱动类对象//setModel()方法为Db.class.php中方法//class DbMysql extends Db{}$this->db->setModel($this->name);//$this->getTableName():获取表名,如：think_user//getFields方法获取数据表每个字段的信息/***[id] => Array(*   [name] => id*   [type] => smallint(4) unsigned*   [notnull] => *   [default] => *   [primary] => 1*   [autoinc] => 1*    )*/$fields =   $this->db->getFields($this->getTableName());if(!$fields) { // 无法获取字段信息return false;}/*** Array(*        [0] => id*        [1] => title*        [2] => content*        [3] => create_time*    )*/$this->fields   =   array_keys($fields);$this->fields['_autoinc'] = false;//注意：循环的不是$this->fieldsforeach ($fields as $key=>$val){// 记录字段类型$type[$key]    =   $val['type'];//如：$type[id]=intif($val['primary']) {$this->fields['_pk'] = $key;//主键字段，这里的$key为字段名if($val['autoinc']) $this->fields['_autoinc']   =   true;//自动增长}}// 记录字段类型信息$this->fields['_type'] =  $type;//表中各个字段的类型if(C('DB_FIELD_VERISON')) $this->fields['_version'] =   C('DB_FIELD_VERISON');// 2008-3-7 增加缓存开关控制//调试模式下，为禁用，即：不会缓存if(C('DB_FIELDS_CACHE')){// 永久缓存数据表信息$db   =  $this->dbName?$this->dbName:C('DB_NAME');F('_fields/'.strtolower($db.'.'.$this->name),$this->fields);}}/*** 设置数据对象的值* @access public* @param string $name 名称* @param mixed $value 值* @return void*/public function __set($name,$value) {// 设置数据对象属性$this->data[$name]  =   $value;}/*** 获取数据对象的值* @access public* @param string $name 名称* @return mixed*/public function __get($name) {return isset($this->data[$name])?$this->data[$name]:null;}/*** 检测数据对象的值* @access public* @param string $name 名称* @return boolean*/public function __isset($name) {return isset($this->data[$name]);}/*** 销毁数据对象的值* @access public* @param string $name 名称* @return void*/public function __unset($name) {unset($this->data[$name]);}/*** 利用__call方法实现一些特殊的Model方法* @access public* @param string $method 方法名称* @param array $args 调用参数* @return mixed*/public function __call($method,$args) {if(in_array(strtolower($method),$this->methods,true)) {// 连贯操作的实现$this->options[strtolower($method)] =   $args[0];return $this;}elseif(in_array(strtolower($method),array('count','sum','min','max','avg'),true)){// 统计查询的实现$field =  isset($args[0])?$args[0]:'*';return $this->getField(strtoupper($method).'('.$field.') AS tp_'.$method);}elseif(strtolower(substr($method,0,5))=='getby') {// 根据某个字段获取记录$field   =   parse_name(substr($method,5));$where[$field] =  $args[0];return $this->where($where)->find();}elseif(strtolower(substr($method,0,10))=='getfieldby') {// 根据某个字段获取记录的某个值$name   =   parse_name(substr($method,10));$where[$name] =$args[0];return $this->where($where)->getField($args[1]);}elseif(isset($this->_scope[$method])){// 命名范围的单独调用支持return $this->scope($method,$args[0]);}else{throw_exception(__CLASS__.':'.$method.L('_METHOD_NOT_EXIST_'));return;}}// 回调方法 初始化模型protected function _initialize() {}/*** 对保存到数据库的数据进行处理* @access protected* @param mixed $data 要操作的数据* @return boolean*/protected function _facade($data) {// 检查非数据字段if(!empty($this->fields)) {foreach ($data as $key=>$val){if(!in_array($key,$this->fields,true)){unset($data[$key]);}elseif(is_scalar($val)) {// 字段类型检查$this->_parseType($data,$key);}}}// 安全过滤if(!empty($this->options['filter'])) {$data = array_map($this->options['filter'],$data);unset($this->options['filter']);}$this->_before_write($data);return $data;}// 写入数据前的回调方法 包括新增和更新protected function _before_write(&$data) {}/*** 新增数据* @access public* @param mixed $data 数据* @param array $options 表达式* @param boolean $replace 是否replace* @return mixed*/public function add($data='',$options=array(),$replace=false) {if(empty($data)) {// 没有传递数据，获取当前数据对象的值if(!empty($this->data)) {$data           =   $this->data;//数据对象中的数据// 重置数据$this->data     = array();}else{$this->error    = L('_DATA_TYPE_INVALID_');return false;}}// 分析表达式$options    =   $this->_parseOptions($options);// 数据处理$data       =   $this->_facade($data);//对保存到数据库中的数据进行处理if(false === $this->_before_insert($data,$options)) {return false;}// 写入数据到数据库/*** $options:默认值有下面两个* Array([table] => think_form[model] => Form)*/$result = $this->db->insert($data,$options,$replace);if(false !== $result ) {$insertId   =   $this->getLastInsID();if($insertId) {// 自增主键返回插入ID$data[$this->getPk()]  = $insertId;$this->_after_insert($data,$options);return $insertId;}$this->_after_insert($data,$options);}return $result;}// 插入数据前的回调方法protected function _before_insert(&$data,$options) {}// 插入成功后的回调方法protected function _after_insert($data,$options) {}public function addAll($dataList,$options=array(),$replace=false){if(empty($dataList)) {$this->error = L('_DATA_TYPE_INVALID_');return false;}// 分析表达式$options =  $this->_parseOptions($options);// 数据处理foreach ($dataList as $key=>$data){$dataList[$key] = $this->_facade($data);}// 写入数据到数据库$result = $this->db->insertAll($dataList,$options,$replace);if(false !== $result ) {$insertId   =   $this->getLastInsID();if($insertId) {return $insertId;}}return $result;}/*** 通过Select方式添加记录* @access public* @param string $fields 要插入的数据表字段名* @param string $table 要插入的数据表名* @param array $options 表达式* @return boolean*/public function selectAdd($fields='',$table='',$options=array()) {// 分析表达式$options =  $this->_parseOptions($options);// 写入数据到数据库if(false === $result = $this->db->selectInsert($fields?$fields:$options['field'],$table?$table:$this->getTableName(),$options)){// 数据库插入操作失败$this->error = L('_OPERATION_WRONG_');return false;}else {// 插入成功return $result;}}/*** 保存数据* @access public* @param mixed $data 数据* @param array $options 表达式* @return boolean*/public function save($data='',$options=array()) {if(empty($data)) {// 没有传递数据，获取当前数据对象的值if(!empty($this->data)) {$data           =   $this->data;// 重置数据$this->data     =   array();}else{$this->error    =   L('_DATA_TYPE_INVALID_');return false;}}// 数据处理$data       =   $this->_facade($data);// 分析表达式$options    =   $this->_parseOptions($options);if(false === $this->_before_update($data,$options)) {return false;}if(!isset($options['where']) ) {// 如果存在主键数据 则自动作为更新条件if(isset($data[$this->getPk()])) {$pk                 =   $this->getPk();$where[$pk]         =   $data[$pk];$options['where']   =   $where;$pkValue            =   $data[$pk];unset($data[$pk]);}else{// 如果没有任何更新条件则不执行$this->error        =   L('_OPERATION_WRONG_');return false;}}$result     =   $this->db->update($data,$options);if(false !== $result) {if(isset($pkValue)) $data[$pk]   =  $pkValue;$this->_after_update($data,$options);}return $result;}// 更新数据前的回调方法protected function _before_update(&$data,$options) {}// 更新成功后的回调方法protected function _after_update($data,$options) {}/*** 删除数据* @access public* @param mixed $options 表达式* @return mixed*/public function delete($options=array()) {if(empty($options) && empty($this->options['where'])) {// 如果删除条件为空 则删除当前数据对象所对应的记录if(!empty($this->data) && isset($this->data[$this->getPk()]))return $this->delete($this->data[$this->getPk()]);elsereturn false;}if(is_numeric($options)  || is_string($options)) {// 根据主键删除记录$pk   =  $this->getPk();if(strpos($options,',')) {$where[$pk]     =  array('IN', $options);}else{$where[$pk]     =  $options;}$pkValue            =  $where[$pk];$options            =  array();$options['where']   =  $where;}// 分析表达式$options =  $this->_parseOptions($options);$result=    $this->db->delete($options);if(false !== $result) {$data = array();if(isset($pkValue)) $data[$pk]   =  $pkValue;$this->_after_delete($data,$options);}// 返回删除记录个数return $result;}// 删除成功后的回调方法protected function _after_delete($data,$options) {}/*** 查询数据集* @access public* @param array $options 表达式参数* @return mixed*/public function select($options=array()) {if(is_string($options) || is_numeric($options)) {// 根据主键查询$pk   =  $this->getPk();if(strpos($options,',')) {$where[$pk]     =  array('IN',$options);}else{$where[$pk]     =  $options;}$options            =  array();$options['where']   =  $where;}elseif(false === $options){ // 用于子查询 不查询只返回SQL$options            =  array();// 分析表达式$options            =  $this->_parseOptions($options);return  '( '.$this->db->buildSelectSql($options).' )';}// 分析表达式$options    =  $this->_parseOptions($options);$resultSet  = $this->db->select($options);if(false === $resultSet) {return false;}if(empty($resultSet)) { // 查询结果为空return null;}$this->_after_select($resultSet,$options);return $resultSet;}// 查询成功后的回调方法protected function _after_select(&$resultSet,$options) {}/*** 生成查询SQL 可用于子查询* @access public* @param array $options 表达式参数* @return string*/public function buildSql($options=array()) {// 分析表达式$options =  $this->_parseOptions($options);return  '( '.$this->db->buildSelectSql($options).' )';}/*** 分析表达式* @access proteced* @param array $options 表达式参数* @return array*/protected function _parseOptions($options=array()) {if(is_array($options))$options =  array_merge($this->options,$options);// 查询过后清空sql表达式组装 避免影响下次查询$this->options  =   array();if(!isset($options['table']))// 自动获取表名$options['table']   =   $this->getTableName();if(!empty($options['alias'])) {$options['table']  .=   ' '.$options['alias'];}// 记录操作的模型名称$options['model']       =   $this->name;// 字段类型验证if(isset($options['where']) && is_array($options['where']) && !empty($this->fields)) {// 对数组查询条件进行字段类型检查foreach ($options['where'] as $key=>$val){$key            =   trim($key);if(in_array($key,$this->fields,true)){if(is_scalar($val)) {$this->_parseType($options['where'],$key);}}elseif('_' != substr($key,0,1) && false === strpos($key,'.') && false === strpos($key,'|') && false === strpos($key,'&')){unset($options['where'][$key]);}}}// 表达式过滤$this->_options_filter($options);return $options;}// 表达式过滤回调方法protected function _options_filter(&$options) {}/*** 数据类型检测* @access protected* @param mixed $data 数据* @param string $key 字段名* @return void*/protected function _parseType(&$data,$key) {$fieldType = strtolower($this->fields['_type'][$key]);if(false === strpos($fieldType,'bigint') && false !== strpos($fieldType,'int')) {$data[$key]   =  intval($data[$key]);}elseif(false !== strpos($fieldType,'float') || false !== strpos($fieldType,'double')){$data[$key]   =  floatval($data[$key]);}elseif(false !== strpos($fieldType,'bool')){$data[$key]   =  (bool)$data[$key];}}/*** 查询数据* @access public* @param mixed $options 表达式参数* @return mixed*/public function find($options=array()) {if(is_numeric($options) || is_string($options)) {$where[$this->getPk()]  =   $options;$options                =   array();$options['where']       =   $where;}// 总是查找一条记录$options['limit']   =   1;// 分析表达式$options            =   $this->_parseOptions($options);$resultSet          =   $this->db->select($options);if(false === $resultSet) {return false;}if(empty($resultSet)) {// 查询结果为空return null;}$this->data         =   $resultSet[0];$this->_after_find($this->data,$options);return $this->data;}// 查询成功的回调方法protected function _after_find(&$result,$options) {}/*** 处理字段映射* @access public* @param array $data 当前数据* @param integer $type 类型 0 写入 1 读取* @return array*/public function parseFieldsMap($data,$type=1) {// 检查字段映射if(!empty($this->_map)) {foreach ($this->_map as $key=>$val){if($type==1) { // 读取if(isset($data[$val])) {$data[$key] =   $data[$val];unset($data[$val]);}}else{if(isset($data[$key])) {$data[$val] =   $data[$key];unset($data[$key]);}}}}return $data;}/*** 设置记录的某个字段值* 支持使用数据库字段和方法* @access public* @param string|array $field  字段名* @param string $value  字段值* @return boolean*/public function setField($field,$value='') {if(is_array($field)) {$data           =   $field;}else{$data[$field]   =   $value;}return $this->save($data);}/*** 字段值增长* @access public* @param string $field  字段名* @param integer $step  增长值* @return boolean*/public function setInc($field,$step=1) {return $this->setField($field,array('exp',$field.'+'.$step));}/*** 字段值减少* @access public* @param string $field  字段名* @param integer $step  减少值* @return boolean*/public function setDec($field,$step=1) {return $this->setField($field,array('exp',$field.'-'.$step));}/*** 获取一条记录的某个字段值* @access public* @param string $field  字段名* @param string $spea  字段数据间隔符号 NULL返回数组* @return mixed*/public function getField($field,$sepa=null) {$options['field']       =   $field;$options                =   $this->_parseOptions($options);$field                  =   trim($field);if(strpos($field,',')) { // 多字段$options['limit']   =   is_numeric($sepa)?$sepa:'';$resultSet          =   $this->db->select($options);if(!empty($resultSet)) {$_field         =   explode(',', $field);$field          =   array_keys($resultSet[0]);$key            =   array_shift($field);$key2           =   array_shift($field);$cols           =   array();$count          =   count($_field);foreach ($resultSet as $result){$name   =  $result[$key];if(2==$count) {$cols[$name]   =  $result[$key2];}else{$cols[$name]   =  is_string($sepa)?implode($sepa,array_slice($result,1)):$result;}}return $cols;}}else{   // 查找一条记录// 返回数据个数if(true !== $sepa) {// 当sepa指定为true的时候 返回所有数据$options['limit']   =   is_numeric($sepa)?$sepa:1;}$result = $this->db->select($options);if(!empty($result)) {if(true !== $sepa && 1==$options['limit']) return reset($result[0]);foreach ($result as $val){$array[]    =   $val[$field];}return $array;}}return null;}/*** 创建数据对象 但不保存到数据库，数据对象就是指的Model.class.php类中的$data属性* @access public* @param mixed $data 创建数据* @param string $type 状态* @return mixed*/public function create($data='',$type='') {// 如果没有传值默认取POST数据if(empty($data)) {$data   =   $_POST;//自动获取$_POST过来的表单数据}elseif(is_object($data)){$data   =   get_object_vars($data);}// 验证数据if(empty($data) || !is_array($data)) {$this->error = L('_DATA_TYPE_INVALID_');return false;}// 检查字段映射$data = $this->parseFieldsMap($data,0);//参数2：0-写入   1-读取// 状态:1-插入模型数据$type = $type?$type:(!empty($data[$this->getPk()])?self::MODEL_UPDATE:self::MODEL_INSERT);// 检测提交字段的合法性，适用于$this->field('field1,field2...')->create()情况if(isset($this->options['field'])) { // $this->field('field1,field2...')->create()$fields =   $this->options['field'];unset($this->options['field']);}elseif($type == self::MODEL_INSERT && isset($this->insert_fields)) {$fields =   $this->insert_fields;}elseif($type == self::MODEL_UPDATE && isset($this->update_fields)) {$fields =   $this->update_fields;}if(isset($fields)) {//都是filed()方法中指定的字段if(is_string($fields)) {$fields =   explode(',',$fields);}foreach ($data as $key=>$val){if(!in_array($key,$fields)) {unset($data[$key]);}}}// 数据自动验证if(!$this->autoValidation($data,$type)) return false;// 表单令牌验证if(C('TOKEN_ON') && !$this->autoCheckToken($data)) {$this->error = L('_TOKEN_ERROR_');return false;}// 验证完成生成数据对象if($this->autoCheckFields) { // 开启字段检测 则过滤非法字段数据$fields =   $this->getDbFields();//获取数据表所有字段名foreach ($data as $key=>$val){//提交过来的表单数据名必须在数据表中存在相同的字段名if(!in_array($key,$fields)) {unset($data[$key]);}elseif(MAGIC_QUOTES_GPC && is_string($val)){$data[$key] =   stripslashes($val);//对提交的标题数据进行过滤处理}}}// 创建完成对数据进行自动处理$this->autoOperation($data,$type);//返回$data// 赋值当前数据对象$this->data =   $data;//将提交过来的表单数据赋值给当前的data属性// 返回创建的数据以供其他调用return $data;//返回提交过来的表单数据}// 自动表单令牌验证// TODO  ajax无刷新多次提交暂不能满足public function autoCheckToken($data) {if(C('TOKEN_ON')){$name   = C('TOKEN_NAME');if(!isset($data[$name]) || !isset($_SESSION[$name])) { // 令牌数据无效return false;}// 令牌验证list($key,$value)  =  explode('_',$data[$name]);if($_SESSION[$name][$key] == $value) { // 防止重复提交unset($_SESSION[$name][$key]); // 验证完成销毁sessionreturn true;}// 开启TOKEN重置if(C('TOKEN_RESET')) unset($_SESSION[$name][$key]);return false;}return true;}/*** 使用正则验证数据* @access public* @param string $value  要验证的数据* @param string $rule 验证规则* @return boolean*/public function regex($value,$rule) {$validate = array('require'   =>  '/.+/','email'     =>  '/^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/','url'       =>  '/^http(s?):\/\/(?:[A-za-z0-9-]+\.)+[A-za-z]{2,4}(?:[\/\?#][\/=\?%\-&~`@[\]\':+!#\w]*)?$/','currency'  =>  '/^\d+(\.\d+)?$/','number'    =>  '/^\d+$/','zip'       =>  '/^\d{6}$/','integer'   =>  '/^[-\+]?\d+$/','double'    =>  '/^[-\+]?\d+(\.\d+)?$/','english'   =>  '/^[A-Za-z]+$/',);// 检查是否有内置的正则表达式if(isset($validate[strtolower($rule)]))$rule       =   $validate[strtolower($rule)];return preg_match($rule,$value)===1;}/*** 自动表单处理* @access public* @param array $data 创建数据* @param string $type 创建类型* @return mixed*/private function autoOperation(&$data,$type) {if(!empty($this->options['auto'])) {//默认为空$_auto   =   $this->options['auto'];unset($this->options['auto']);}elseif(!empty($this->_auto)){//默认为空$_auto   =   $this->_auto;}// 自动填充if(isset($_auto)) {foreach ($_auto as $auto){// 填充因子定义格式// array('field','填充内容','填充条件','附加规则',[额外参数])if(empty($auto[2])) $auto[2] = self::MODEL_INSERT; // 默认为新增的时候自动填充if( $type == $auto[2] || $auto[2] == self::MODEL_BOTH) {switch(trim($auto[3])) {case 'function':    //  使用函数进行填充 字段的值作为参数case 'callback': // 使用回调方法$args = isset($auto[4])?(array)$auto[4]:array();if(isset($data[$auto[0]])) {array_unshift($args,$data[$auto[0]]);}if('function'==$auto[3]) {$data[$auto[0]]  = call_user_func_array($auto[1], $args);}else{$data[$auto[0]]  =  call_user_func_array(array(&$this,$auto[1]), $args);}break;case 'field':    // 用其它字段的值进行填充$data[$auto[0]] = $data[$auto[1]];break;case 'string':default: // 默认作为字符串填充$data[$auto[0]] = $auto[1];}if(false === $data[$auto[0]] )   unset($data[$auto[0]]);}}}return $data;//返回$data}/*** 自动表单验证* @access protected* @param array $data 创建数据* @param string $type 创建类型* @return boolean*/protected function autoValidation($data,$type) {if(!empty($this->options['validate'])) {$_validate   =   $this->options['validate'];unset($this->options['validate']);}elseif(!empty($this->_validate)){$_validate   =   $this->_validate;}// 属性验证if(isset($_validate)) { // 如果设置了数据自动验证则进行数据验证if($this->patchValidate) { // 重置验证错误信息$this->error = array();}foreach($_validate as $key=>$val) {// 验证因子定义格式// array(field,rule,message,condition,type,when,params)// 判断是否需要执行验证if(empty($val[5]) || $val[5]== self::MODEL_BOTH || $val[5]== $type ) {if(0==strpos($val[2],'{%') && strpos($val[2],'}'))// 支持提示信息的多语言 使用 {%语言定义} 方式$val[2]  =  L(substr($val[2],2,-1));$val[3]  =  isset($val[3])?$val[3]:self::EXISTS_VALIDATE;$val[4]  =  isset($val[4])?$val[4]:'regex';// 判断验证条件switch($val[3]) {case self::MUST_VALIDATE:   // 必须验证 不管表单是否有设置该字段if(false === $this->_validationField($data,$val)) return false;break;case self::VALUE_VALIDATE:    // 值不为空的时候才验证if('' != trim($data[$val[0]]))if(false === $this->_validationField($data,$val)) return false;break;default:    // 默认表单存在该字段就验证if(isset($data[$val[0]]))if(false === $this->_validationField($data,$val)) return false;}}}// 批量验证的时候最后返回错误if(!empty($this->error)) return false;}return true;}/*** 验证表单字段 支持批量验证* 如果批量验证返回错误的数组信息* @access protected* @param array $data 创建数据* @param array $val 验证因子* @return boolean*/protected function _validationField($data,$val) {if(false === $this->_validationFieldItem($data,$val)){if($this->patchValidate) {$this->error[$val[0]]   =   $val[2];}else{$this->error            =   $val[2];return false;}}return ;}/*** 根据验证因子验证字段* @access protected* @param array $data 创建数据* @param array $val 验证因子* @return boolean*/protected function _validationFieldItem($data,$val) {switch(strtolower(trim($val[4]))) {case 'function':// 使用函数进行验证case 'callback':// 调用方法进行验证$args = isset($val[6])?(array)$val[6]:array();if(is_string($val[0]) && strpos($val[0], ','))$val[0] = explode(',', $val[0]);if(is_array($val[0])){// 支持多个字段验证foreach($val[0] as $field)$_data[$field] = $data[$field];array_unshift($args, $_data);}else{array_unshift($args, $data[$val[0]]);}if('function'==$val[4]) {return call_user_func_array($val[1], $args);}else{return call_user_func_array(array(&$this, $val[1]), $args);}case 'confirm': // 验证两个字段是否相同return $data[$val[0]] == $data[$val[1]];case 'unique': // 验证某个值是否唯一if(is_string($val[0]) && strpos($val[0],','))$val[0]  =  explode(',',$val[0]);$map = array();if(is_array($val[0])) {// 支持多个字段验证foreach ($val[0] as $field)$map[$field]   =  $data[$field];}else{$map[$val[0]] = $data[$val[0]];}if(!empty($data[$this->getPk()])) { // 完善编辑的时候验证唯一$map[$this->getPk()] = array('neq',$data[$this->getPk()]);}if($this->where($map)->find())   return false;return true;default:  // 检查附加规则return $this->check($data[$val[0]],$val[1],$val[4]);}}/*** 验证数据 支持 in between equal length regex expire ip_allow ip_deny* @access public* @param string $value 验证数据* @param mixed $rule 验证表达式* @param string $type 验证方式 默认为正则验证* @return boolean*/public function check($value,$rule,$type='regex'){switch(strtolower(trim($type))) {case 'in': // 验证是否在某个指定范围之内 逗号分隔字符串或者数组$range   = is_array($rule)?$rule:explode(',',$rule);return in_array($value ,$range);case 'between': // 验证是否在某个范围if (is_array($rule)){$min    =    $rule[0];$max    =    $rule[1];}else{list($min,$max)   =  explode(',',$rule);}return $value>=$min && $value<=$max;case 'equal': // 验证是否等于某个值return $value == $rule;case 'length': // 验证长度$length  =  mb_strlen($value,'utf-8'); // 当前数据长度if(strpos($rule,',')) { // 长度区间list($min,$max)   =  explode(',',$rule);return $length >= $min && $length <= $max;}else{// 指定长度return $length == $rule;}case 'expire':list($start,$end)   =  explode(',',$rule);if(!is_numeric($start)) $start   =  strtotime($start);if(!is_numeric($end)) $end   =  strtotime($end);return $_SERVER['REQUEST_TIME'] >= $start && $_SERVER['REQUEST_TIME'] <= $end;case 'ip_allow': // IP 操作许可验证return in_array(get_client_ip(),explode(',',$rule));case 'ip_deny': // IP 操作禁止验证return !in_array(get_client_ip(),explode(',',$rule));case 'regex':default:    // 默认使用正则验证 可以使用验证类中定义的验证名称// 检查附加规则return $this->regex($value,$rule);}}/*** SQL查询* @access public* @param string $sql  SQL指令* @param mixed $parse  是否需要解析SQL* @return mixed*/public function query($sql,$parse=false) {if(!is_bool($parse) && !is_array($parse)) {$parse = func_get_args();array_shift($parse);}$sql  =   $this->parseSql($sql,$parse);return $this->db->query($sql);}/*** 执行SQL语句* @access public* @param string $sql  SQL指令* @param mixed $parse  是否需要解析SQL* @return false | integer*/public function execute($sql,$parse=false) {if(!is_bool($parse) && !is_array($parse)) {$parse = func_get_args();array_shift($parse);}$sql  =   $this->parseSql($sql,$parse);return $this->db->execute($sql);}/*** 解析SQL语句* @access public* @param string $sql  SQL指令* @param boolean $parse  是否需要解析SQL* @return string*/protected function parseSql($sql,$parse) {// 分析表达式if(true === $parse) {$options =  $this->_parseOptions();$sql  =   $this->db->parseSql($sql,$options);}elseif(is_array($parse)){ // SQL预处理$sql  = vsprintf($sql,$parse);}else{if(strpos($sql,'__TABLE__'))$sql    =   str_replace('__TABLE__',$this->getTableName(),$sql);}$this->db->setModel($this->name);return $sql;}/*** 切换当前的数据库连接* @access public* @param integer $linkNum  连接序号* @param mixed $config  数据库连接信息* @param array $params  模型参数* @return Model*/public function db($linkNum='',$config='',$params=array()){if(''===$linkNum && $this->db) {//如果当前数据库操作对象存在，则直接返回当前数据库操作对象return $this->db;//当前数据库操作对象}static $_linkNum    =   array();//连接序号static $_db = array();//默认执行ifif(!isset($_db[$linkNum]) || (isset($_db[$linkNum]) && $config && $_linkNum[$linkNum]!=$config) ) {// 创建一个新的实例，默认不执行if(!empty($config) && is_string($config) && false === strpos($config,'/')) { // 支持读取配置参数//默认不执行$config  =  C($config);}//默认执行，返回一个数据库驱动类Db,class.php实例化对象/*** Db::getInstance($config);详解* 第一步：查找Db.class.php类库的getInstance()方法* 第二步：getInstance()方法调用common.php文件的get_instance_of(__CLASS__,'factory',$args);* 第三步：get_instance_of(__CLASS__,'factory',$args)再次调用Db.class.php类的factory()方法* 第四步：Db.class.php中的factory()方法,会加载数据库驱动类文件DbMysql.class.php,并返回一个数据库驱动类实例化对象*/$_db[$linkNum]            =    Db::getInstance($config);//返回一个数据库驱动类DbMysql.class.php实例化对象}elseif(NULL === $config){$_db[$linkNum]->close(); // 关闭数据库连接unset($_db[$linkNum]);return ;}if(!empty($params)) {//默认不执行if(is_string($params))    parse_str($params,$params);foreach ($params as $name=>$value){$this->setProperty($name,$value);}}// 记录连接信息$_linkNum[$linkNum] =   $config;// 切换数据库连接$this->db   =    $_db[$linkNum];//数据库驱动类Db,class.php实例化对象$this->_after_db();// 字段检测                        是否自动检测数据表字段信息if(!empty($this->name) && $this->autoCheckFields)   $this->_checkTableInfo();return $this;//返回当前对象,其中就包括数据库连接对象}// 数据库切换后回调方法protected function _after_db() {}/*** 得到当前的数据对象名称* @access public* @return string*/public function getModelName() {if(empty($this->name))$this->name =   substr(get_class($this),0,-5);return $this->name;}/*** 得到完整的数据表名* @access public* @return string*/public function getTableName() {if(empty($this->trueTableName)) {$tableName  = !empty($this->tablePrefix) ? $this->tablePrefix : '';//think_if(!empty($this->tableName)) {//默认不执行$tableName .= $this->tableName;}else{//parse_name()函数将模型名转化为小写，如，User转换为user//think_user$tableName .= parse_name($this->name);}//真实表名$this->trueTableName    =   strtolower($tableName);}//think_userreturn (!empty($this->dbName)?$this->dbName.'.':'').$this->trueTableName;}/*** 启动事务* @access public* @return void*/public function startTrans() {$this->commit();$this->db->startTrans();return ;}/*** 提交事务* @access public* @return boolean*/public function commit() {return $this->db->commit();}/*** 事务回滚* @access public* @return boolean*/public function rollback() {return $this->db->rollback();}/*** 返回模型的错误信息* @access public* @return string*/public function getError(){return $this->error;}/*** 返回数据库的错误信息* @access public* @return string*/public function getDbError() {return $this->db->getError();}/*** 返回最后插入的ID* @access public* @return string*/public function getLastInsID() {return $this->db->getLastInsID();}/*** 返回最后执行的sql语句* @access public* @return string*/public function getLastSql() {return $this->db->getLastSql($this->name);}// 鉴于getLastSql比较常用 增加_sql 别名public function _sql(){return $this->getLastSql();}/*** 获取主键名称* @access public* @return string*/public function getPk() {return isset($this->fields['_pk'])?$this->fields['_pk']:$this->pk;}/*** 获取数据表字段信息* @access public* @return array*/public function getDbFields(){if(isset($this->options['table'])) {// 动态指定表名$fields     =   $this->db->getFields($this->options['table']);return  $fields?array_keys($fields):false;}if($this->fields) {$fields     =  $this->fields;unset($fields['_autoinc'],$fields['_pk'],$fields['_type'],$fields['_version']);return $fields;}return false;}/*** 设置数据对象值* @access public* @param mixed $data 数据* @return Model*/public function data($data=''){if('' === $data && !empty($this->data)) {return $this->data;}if(is_object($data)){$data   =   get_object_vars($data);}elseif(is_string($data)){parse_str($data,$data);}elseif(!is_array($data)){throw_exception(L('_DATA_TYPE_INVALID_'));}$this->data = $data;return $this;}/*** 查询SQL组装 join* @access public* @param mixed $join* @return Model*/public function join($join) {if(is_array($join)) {$this->options['join']      =   $join;}elseif(!empty($join)) {$this->options['join'][]    =   $join;}return $this;}/*** 查询SQL组装 union* @access public* @param mixed $union* @param boolean $all* @return Model*/public function union($union,$all=false) {if(empty($union)) return $this;if($all) {$this->options['union']['_all']  =   true;}if(is_object($union)) {$union   =  get_object_vars($union);}// 转换union表达式if(is_string($union) ) {$options =  $union;}elseif(is_array($union)){if(isset($union[0])) {$this->options['union']  =  array_merge($this->options['union'],$union);return $this;}else{$options =  $union;}}else{throw_exception(L('_DATA_TYPE_INVALID_'));}$this->options['union'][]  =   $options;return $this;}/*** 查询缓存* @access public* @param mixed $key* @param integer $expire* @param string $type* @return Model*/public function cache($key=true,$expire=null,$type=''){$this->options['cache']  =  array('key'=>$key,'expire'=>$expire,'type'=>$type);return $this;}/*** 指定查询字段 支持字段排除* @access public* @param mixed $field* @param boolean $except 是否排除* @return Model*/public function field($field,$except=false){if(true === $field) {// 获取全部字段$fields     =  $this->getDbFields();$field      =  $fields?$fields:'*';}elseif($except) {// 字段排除if(is_string($field)) {$field  =  explode(',',$field);}$fields     =  $this->getDbFields();$field      =  $fields?array_diff($fields,$field):$field;}$this->options['field']   =   $field;return $this;}/*** 调用命名范围* @access public* @param mixed $scope 命名范围名称 支持多个 和直接定义* @param array $args 参数* @return Model*/public function scope($scope='',$args=NULL){if('' === $scope) {if(isset($this->_scope['default'])) {// 默认的命名范围$options    =   $this->_scope['default'];}else{return $this;}}elseif(is_string($scope)){ // 支持多个命名范围调用 用逗号分割$scopes         =   explode(',',$scope);$options        =   array();foreach ($scopes as $name){if(!isset($this->_scope[$name])) continue;$options    =   array_merge($options,$this->_scope[$name]);}if(!empty($args) && is_array($args)) {$options    =   array_merge($options,$args);}}elseif(is_array($scope)){ // 直接传入命名范围定义$options        =   $scope;}if(is_array($options) && !empty($options)){$this->options  =   array_merge($this->options,array_change_key_case($options));}return $this;}/*** 指定查询条件 支持安全过滤* @access public* @param mixed $where 条件表达式* @param mixed $parse 预处理参数* @return Model*/public function where($where,$parse=null){if(!is_null($parse) && is_string($where)) {if(!is_array($parse)) {$parse = func_get_args();array_shift($parse);}$parse = array_map(array($this->db,'escapeString'),$parse);$where =   vsprintf($where,$parse);}elseif(is_object($where)){$where  =   get_object_vars($where);}$this->options['where'] =   $where;return $this;}/*** 指定查询数量* @access public* @param mixed $offset 起始位置* @param mixed $length 查询数量* @return Model*/public function limit($offset,$length=null){$this->options['limit'] =   is_null($length)?$offset:$offset.','.$length;return $this;}/*** 指定分页* @access public* @param mixed $page 页数* @param mixed $listRows 每页数量* @return Model*/public function page($page,$listRows=null){$this->options['page'] =   is_null($listRows)?$page:$page.','.$listRows;return $this;}/*** 设置模型的属性值* @access public* @param string $name 名称* @param mixed $value 值* @return Model*/public function setProperty($name,$value) {if(property_exists($this,$name))$this->$name = $value;return $this;}}?>