Detailed explanation of the principles and usage of thinkPHP framework automatic filling

This time I will bring you a detailed explanation of the automatic filling principle and usage of the thinkPHP framework. What are the precautions when using the automatic filling principle of the thinkPHP framework. The following is a practical case, let's take a look.

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 the field value , such as:

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

Verify payment dynamics and Static

Static verification

Predefine the automatic validation rules of the model in the model class, and use create will be automatically verified after the 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.Use the create method when calling It will be filled in automatically

$User = D("User"); // 实例化User对象
if (!$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

The following is the 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:

After the create method is called, the autoOperation method will be called. 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;
}

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other php Chinese websites. related articles!

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