About the principle and analysis of automatic filling in thinkPHP framework

This article mainly introduces the automatic filling of the thinkPHP framework. It analyzes the principles, usage methods and related operation precautions of the thinkPHP framework automatic filling in detail in the form of examples. Friends in need can refer to this article

Examples analyze the principles and usage of automatic filling in the thinkPHP framework. Share it with everyone for your reference, the details are as follows:

thinkphp has a method to automatically fill fields

The filling rules are as follows

array(
   array(完成字段1,完成规则,[完成条件,附加规则]),
   array(完成字段2,完成规则,[完成条件,附加规则]),
   ......
);

Note: After studying the source code, I found that there is actually a fourth parameter, which is used to pass parameters to functions or callback methods. Parameter 1 defaults to this field value, such as:

array('mobile','trim',3,'function',参数2，参数3'),

Verify payment dynamic and static

Static verification

The automatic verification rules of the model are pre-defined in the model class, and will be automatically verified after using the create method.

The following is the official example

1. First define the verification rules in the model

namespace Home\Model;
use Think\Model;
class UserModel extends Model{
   protected $_auto = array (
     array('status','1'), // 新增的时候把status字段设置为1
     array('password','md5',3,'function') , // 对password字段在新增和编辑的时候使md5函数处理
     array('name','getName',3,'callback'), // 对name字段在新增和编辑的时候回调getName方法
     array('update_time','time',2,'function'), // 对update_time字段在更新的时候写入当前时间戳
   );
}

2. When calling, use the create method to automatically fill in the

$User = D("User"); // 实例化User对象
if (!$User->create()){ // 创建数据对象
   // 如果创建失败 表示验证没有通过 输出错误提示信息
   exit($User->getError());
}else{
   // 验证通过 写入新增数据
   $User->add();
}

dynamic verification

following It is an official example

$rules = array (
  array('status','1'), // 新增的时候把status字段设置为1
  array('password','md5',3,'function') , // 对password字段在新增和编辑的时候使md5函数处理
  array('update_time','time',2,'function'), // 对update_time字段在更新的时候写入当前时间戳
);
$User = M('User');
$User->auto($rules)->create();
$User->add();

The following is the core code analysis:

The create method will be called after calling autoOperationMethod, the method is as follows

/**
 * 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'])) {
    $_auto  =  $this->options['auto'];
    unset($this->options['auto']);
  }elseif(!empty($this->_auto)){
    $_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])) $auto[2] = self::MODEL_INSERT; // 默认为新增的时候自动填充
      //这里的判断是关键，$type为当前的操作状态，值为1表示是插入，值为2表示是更新
      //如果当前的$type状态值等于设置的值$auto[2]或者$auto[2]的值为3，代表需要填充
      if( $type == $auto[2] || $auto[2] == self::MODEL_BOTH) {
        if(empty($auto[3])) $auto[3] = 'string';
        switch(trim($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 'ignore': // 为空忽略
            if($auto[1]===$data[$auto[0]])
              unset($data[$auto[0]]);
            break;
          case 'string':
          default: // 默认作为字符串填充
            $data[$auto[0]] = $auto[1];
        }
        if(isset($data[$auto[0]]) && false === $data[$auto[0]] )  unset($data[$auto[0]]);
      }
    }
  }
  return $data;
}

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