如何在Yii中为相同的AR模型连接规则

Question

我使用Yii MVC。

我必须经常在数据表中添加新列。

我想使用Gii并重新生成model并保留我做的chnages;更改，如常量，变量，规则，关系，等等

所以，让我们例如url类模型：

<?php 

/** 
* This is the model class for table "url". 
* 
* The followings are the` available columns in table 'url': 
* @property string $id 
* @property integer $instance_id 
* @property integer $website_id 
* @property string $link 
* @property string $title 
* @property integer $created 
* @property integer $updated 
* @property integer $status 
*/ 
class Url extends CActiveRecord { 

    const ACTIVE = 1; 

    /** 
    * Returns the static model of the specified AR class. 
    * @param string $className active record class name. 
    * @return Url the static model class 
    */ 
    public static function model($className = __CLASS__) { 
     return parent::model($className); 
    } 

    /** 
    * @return string the associated database table name 
    */ 
    public function tableName() { 
     return 'url'; 
    } 

    /** 
    * @return array validation rules for model attributes. 
    */ 
    public function rules() { 
     // NOTE: you should only define rules for those attributes that 
     // will receive user inputs. 
     return array(
      array('instance_id, website_id, link, title, created, updated, status', 'required'), 
      array('instance_id, website_id, created, updated, status', 'numerical', 'integerOnly' => true), 
      array('link, title', 'length', 'max' => 255), 
      array('link', 'unique'), 
      // The following rule is used by search(). 
      // Please remove those attributes that should not be searched. 
      array('id, instance_id, website_id, link, title, created, updated, status', 'safe', 'on' => 'search'), 
     ); 
    } 

    /** 
    * @return array relational rules. 
    */ 
    public function relations() { 
     // NOTE: you may need to adjust the relation name and the related 
     // class name for the relations automatically generated below. 
     return array(
     ); 
    } 

    /** 
    * @return array customized attribute labels (name=>label) 
    */ 
    public function attributeLabels() { 
     return array(
      'id' => 'ID', 
      'instance_id' => 'Instance', 
      'website_id' => 'Website', 
      'link' => 'Link', 
      'title' => 'Title', 
      'created' => 'Created', 
      'updated' => 'Updated', 
      'status' => 'Status', 
     ); 
    } 

    /** 
    * Retrieves a list of models based on the current search/filter conditions. 
    * @return CActiveDataProvider the data provider that can return the models based on the search/filter conditions. 
    */ 
    public function search() { 
     // Warning: Please modify the following code to remove attributes that 
     // should not be searched. 

     $criteria = new CDbCriteria; 

     $criteria->compare('id', $this->id, true); 
     $criteria->compare('instance_id', $this->instance_id); 
     $criteria->compare('website_id', $this->website_id); 
     $criteria->compare('link', $this->link, true); 
     $criteria->compare('title', $this->title, true); 
     $criteria->compare('created', $this->created); 
     $criteria->compare('updated', $this->updated); 
     $criteria->compare('status', $this->status); 

     return new CActiveDataProvider($this, array(
      'criteria' => $criteria, 
     )); 
    } 

} 

的时候我会重新生成model，该const和rule与unique将丢失

所以，我创建了一个新的model class，UrlM，它扩展了url模型类，这个类KEPS我的所有增强功能：

<?php 

class UrlM extends Url { 

    const ACTIVE = 1; 

    public function rules() { 
     return array(
      array('link', 'unique'), 
     ); 
    } 

    public function relations() { 
     return array(
     ); 
    } 

} 

我如何Concat的从url模型类的规则与rules从urlm模型类？

相同的答案应该APLY为今后的改进，如relations

Answer 1

父类中的每一个功能 - 就像rules()，relations()等，返回数组。所以你可以使用呼叫parent::rules()，然后加入“阵列”。

public function rules() { 
    $myParentRules=parent::rules(); 
    $myConcatRules=$myParentRules + array(
    array('link', 'unique'), 
); 
    return $myConcatRules; 
} 

Answer 2

array_merge会帮助你。

public function rules() { 
    $myRules = array(
     array('id', 'numerical', 'integerOnly'=>true), 
    ); 

    return array_merge(parent::rules(),$myRules); 

}