YII load()

Posted 2021-01-28 Brush

 

  看上图 其中数组 UniversityPostSearch 是通过前端表单传过来的数据，而我只想验证 这个表单数据是不是合法 应该这样写

$this->load($param,\'UniversityPostSearch\'); 

参数 $param 是YII::$app->requist->get() 传过来的所有值 就是上图的 array(3){[id] = .......}
参数 \'UniversityPostSearch\' 是需要验证的表单

这个加载的好处就是 不用再一步一步的复制 其作用等价于

$this->title = (string)$param[\'UniversityPostSearch\'][\'title\'];

$this->create_time_start = (string)$param[\'UniversityPostSearch\'][\'create_time_start\'];

$this->create_time_end = (string)$param[\'UniversityPostSearch\'][\'create_time_end\'];

$this->status = (int)$param[\'UniversityPostSearch\'][\'status\'];

....

好多行逐一赋值的代码  浓缩为  一行代码 也即

$this->load($param,\'UniversityPostSearch\');

底层 load() 函数的代码如下图 这就是为什么要传第二个参数的原因

接下来就是rule规则验证的问题

 

为什么create_time_start 和 create_time_end 需要单独定义一下，而 \'is_top\'， \'title\' 不用定义，直接写在 rule()方法  里面了  ??

因为 create_time_start   create_time_end 并不是数据库已经存在的字段 如果不写的话 $this->create_time_start 就会报错    说Undifiend create_time_start ..

而 \'is_top\' , \'title\' 是数据库里面的字段，不用定义，就可以 引用 $this->is_top，但是必须要写在rules规则里面，不写错，值为null，赋值就不起作用了。

 

 

全部代码如下

 

<?php
/**
 * Created by PhpStorm.
 * User: tangwei
 * Date: 2018-12-19
 * Time: 11:26
 */

namespace business\\models\\university\\search;

use common\\models\\quan\\QuanPost;
use yii\\data\\ActiveDataProvider;

class UniversityPostSearch extends QuanPost
{

    public $create_time_start;
    public $create_time_end;

public function rules()
{
   return [
     [ [\'create_time_start\', \'create_time_end\',\'title\'], \'string\'], 
     [ [\'is_top\',\'status\',\'is_essence\',\'sort\'] ,\'integer\'],
   ];
}

    public function search($param,$university){


        $query = QuanPost::find()->select(\'
              quan_post.id,
              quan_post.title,
              quan_post.num_view,
              quan_post.num_praise,
              quan_post.num_comment,
              quan_post.status,
              quan_post.create_at,
              quan_post.is_top,
              quan_topic.title as topic_title,
              
              quan_module.name as module_name,
        \')
         ->leftJoin(\'quan_topic\',\'quan_post.topic_id = quan_topic.id\')
         ->leftJoin(\'quan_module\',\'quan_post.module_id_school = quan_module.id\')
         ->andWhere([\'university_id\' => $university]);

        $dataProvider = new ActiveDataProvider([
            \'query\' => $query,
            \'pagination\' => [
                \'pageSize\' => 10,
            ]
        ]);

        $this->load($param,\'UniversityPostSearch\');

       

        if(!$this->validate()){
            return $dataProvider;
        }


        if(!empty($this->title)){

            $query->andWhere([\'like\',\'quan_post.title\', $this->title]);
        }

        if(!empty($this->create_time_start)){

            $query->andWhere([\'>=\', \'quan_post.create_at\', strtotime($this->create_time_start)]);
        }

        if(!empty($this->create_time_end)){

            $query->andWhere([\'<=\', \'quan_post.create_at\', strtotime($this->create_time_end)]);
        }

        #审核状态
        if(is_numeric($this->status)){

            $query->andWhere([\'quan_post.status\' => $this->status]);
        }

        #是否置顶
        if(is_numeric($this->is_top)){

            $query->andWhere([\'quan_post.is_top\' => $this->is_top]);
        }

        #是否加精
        if(is_numeric($this->is_essence)){

            $query->andWhere([\'quan_post.is_essence\' => $this->is_essence]);
        }

        #排序
        if(!empty($this->sort)){

            #最热排序
            $query->addOrderBy(\'quan_post.num_view desc\');

        }else{
             #最新排序
            $query->addOrderBy(\'quan_post.create_at desc\');
        }


        return $dataProvider;
    }
}