Yii2 implementation of three-level linkage between provinces, cities, and cities in China

This article describes how Yii2 achieves a three-level linkage between provinces, cities, and cities in China. I think this is a good example. I would like to share it with you and give you a reference. Let's take a look at it with Xiaobian. Yii2 implementation of three-level linkage between provinces, cities, and cities in China

Install

Add to your composer. json file

"chenkby/yii2-region": "dev-master"

Switch to the Project directory

Composer update;

3. configuration

1) add the following method to the Model of the region:

public static function getRegion($parentId=0){  $result = static::find()->where(['parent_id'=>$parentId])->asArray()->all();  return ArrayHelper::map($result, 'id', 'name');}

2) add the following actions to the controller:

public function actions(){  $actions=parent::actions();  $actions['get-region']=[    'class'=>\chenkby\region\RegionAction::className(),    'model'=>\app\models\Region::className()  ];  return $actions;}

3) add the enablePrettyUrl of urlManager to main. php in common/config to hide index. php.

"UrlManager" => [// indicates whether URL beautification is enabled for urlManager. in Yii1.1, it is called a URL in path format, and // rename and beautify in Yii2.0. // Disabled by default. However, it is generally enabled in actual use, especially in the product environment. "EnablePrettyUrl" => true, // whether to enable strict resolution. if strict resolution is enabled, the current request must match at least one routing rule. // otherwise, the request is considered invalid. // This option is only valid after enablePrettyUrl is enabled. "EnableStrictParsing" => false, // whether the script is displayed in the URL. Is a further supplement to the beautification function. "ShowScriptName" => false, // specifies a suffix after the URL, such as. html. Valid only when enablePrettyUrl is enabled. "Suffix" => "", "rules" => ["
 
  
/
  
   
"=>"
   
    
/View ","
    
     
/"=>"
     
      
/"],],
     
    
   
  
 

4. use

 Field ($ model, 'District ')-> widget (\ chenkby \ region \ Region: className (), ['model' => $ model, 'URL' => \ yii \ helpers \ url: toRoute (['get-region']), 'Province '=> ['attribute' => 'Province ', 'items '=> Region: getRegion (), 'options' => ['class' => 'form-control form-control-inline ', 'proppt' => 'Select province '], 'City' => ['attribute' => 'city', 'items' => Region :: getRegion ($ model ['Province ']), 'options' => ['class' => 'form-control f Orm-control-inline ', 'proppt' => 'Select City'], 'District' => ['attribute' => 'District ', 'items '=> Region: getRegion ($ model ['city']), 'options' => ['class' => 'form-control form-control-inline', 'propt' => 'Select County/region']);?>

The above is all the content of this article. I hope it will help you learn and support PHP.

MoreYii2 implementation of three-level linkage between provinces, cities, and cities in ChinaFor more information, see PHP!

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