Question

我有三张桌子：

contacts包含多个群组
contact_groups有多个联系人
contact_contact_groups

联系

列

contact_id | contact_name

contact_groups

列

group_id | group_name

contact_contact_groups

列

contact_contact_group_id | contact_id | group_id

MODEL

接触模式

public function getContactContactGroups()
{
    return $this->hasMany(ContactContactGroups::className(),
                          ['contact_id' => 'contact_id']);
}

contact_groups模型

public function getContactContactGroups()
{
    return $this->hasMany(ContactContactGroups::className(),
                          ['group_id' => 'group_id']);
}

contact_contact_groups模型

public function getGroup()
{
  return $this->hasOne(ContactGroups::className(), ['group_id' => 'group_id']);
}

public function getContact()
{
  return $this->hasOne(Contacts::className(), ['contact_id' => 'contact_id']);
}

我想像这样显示网格：

-----------------------------
Contact Name | Group Name
-----------------------------
Me           | Uncategorized
Mother       | Family
Jhon         | Business

查看

<?= GridView::widget([
  'dataProvider' => $dataProvider,
  'filterModel' => $searchModel,
  'tableOptions' =>['class' => 'table table-striped table-bordered'],
  'columns' => [
    [
      'attribute' => 'contact_name',
      'value' => 'contact_name',
    ],
    [
      'attribute' => 'contactContactGroups.group_id',
      'value' => 'contactContactGroups.group.group_name',
      'filter' => Html::activeDropDownList($searchModel, 'group_id', ArrayHelper::map(ContactGroups::find()->where(['group_status'=>'ACTIVE'])->asArray()->all(), 'group_id', 'group_name'),['class'=>'form-control','prompt' => 'Select Group']),
    ],
  ],]); 
?>

ContactsController

public function actionIndex() { 
    $this->unsetThisButton(array(4,5));   
    $searchModel = new ContactsSearch(); 
    $dataProvider = $searchModel->search(Yii::$app->request->queryParams); 
    return $this->render('index', [ 
          'searchModel' => $searchModel, 
          'dataProvider' => $dataProvider,
     ]); 
}

但它显示(not set)不是group_name。

Answer 1

一种简单的方法是基于在模型中添加一个getter，例如：for contact_contact_groups model

你有关系

public function getGroup()
{
  return $this->hasOne(ContactGroups::className(), ['group_id' => 'group_id']);
}

为group_name使用getter

 public function getGroup_group_name() {
    return $this->group->group_name;
}

并在属性的网格视图中

[
  'attribute' => 'group_group_name',
  'filter' => Html::activeDropDownList($searchModel, 'group_id', ArrayHelper::map(ContactGroups::find()->where(['group_status'=>'ACTIVE'])->asArray()->all(), 'group_id', 'group_name'),['class'=>'form-control','prompt' => 'Select Group']),
],

为关系和字段做同样的事情

Answer 2

我找到了这样简单的东西：）

GRID（VIEW）

[
        'attribute' => 'contactContactGroups.group_id',
        'value'=>function ($data) {
            $d = array();
            foreach ($data->contactContactGroups as $k=>$m)
            {
              $d[] = ContactContactGroups::get_group_name_by_id($m->group_id);
            }
            return implode($d, ', '); 
          },
        'filter' => Html::activeDropDownList($searchModel, 'group_id', ArrayHelper::map(ContactGroups::find()->where(['group_status'=>'ACTIVE'])->asArray()->all(), 'group_id', 'group_name'),['class'=>'form-control','prompt' => 'Select Group']),
      ],

models / ContactContactGroups.php模型

我创建了函数get_group_name_by_id($id)

public static function get_group_name_by_id($id){
  $model = ContactGroups::find()->where(["group_id" => $id])->one();
  if(!empty($model)){
    return $model->group_name;
  }
  return null;
}

所以结果是：

Contact   | Category
-------------------------------
Me        | Business, Family
Erick     | Business, Office
Jhon      | Office

感谢@scaisEdge，你给我some clue;）

如何连接三个表并在网格视图中获取值

2 个答案: