Yii2 Modify find() Method in Model search()

Question

I am trying to modify the find() method inside the model search and it throws an error "The data provider property must be set".

Here is my search model:

public function search($params)
{

    $userID = Yii::$app->user->identity->id;

    $groups = GroupAccess::find()
    ->where(['user_id' => $userID, 'item_name' => 'group_creator'])
        ->asArray()
        ->all();
        foreach ($groups as $group) {
            $accessGroups[] = $group['group_id'];
        }

    $query = Group::find($accessGroups);

    $dataProvider = new ActiveDataProvider([
        'query' => $query,
    ]);

    $this->load($params);

    if (!$this->validate()) {
        // uncomment the following line if you do not want to any records when validation fails
        // $query->where('0=1');
        return $dataProvider;
    }

    $query->andFilterWhere([
        'id' => $this->id,
        'status_id' => $this->status_id,
        //'created_user_id' => $this->created_user_id,
        'created_date' => $this->created_date,
        'profile_updated_user_id' => $this->profile_updated_user_id,
        'profile_updated_date' => $this->profile_updated_date,
        'last_accessed_user_id' => $this->last_accessed_user_id,
        'last_accessed_date' => $this->last_accessed_date,
    ]);

    $query->andFilterWhere(['like', 'name', $this->name])
        ->andFilterWhere(['like', 'description', $this->description]);

    return $dataProvider;
}

And here is my controller action:

$searchModel = new GroupSearch();
    $dataProvider =    $searchModel->search(Yii::$app->request->queryParams);

if (Yii::$app->request->isPjax) {
        return $this->renderAjax('groups', [
        'searchModel' => $searchModel,
        'dataProviderMine' => $dataProvider,
    ]);
    } else {
        return $this->render('groups', [
        'searchModel' => $searchModel,
        'dataProviderMine' => $dataProvider,
    ]);
    }

}

It is important to refine the query as the user should be able to see other groups.

How can i modify the find() method properly?

Thanks.

Answer 1

I see two bugs here:

1. Your find method

   $query = Group::find($accessGroups)

   will not work - just replace it with

   $query = Group::find()->where(['id' => $accessGroups]);

2. I guess "The data provider property must be set" error is caused by your view code. E.g. if you are using GridView, you should set its 'dataProvider' widget option:

   GridView::widget([
       'dataProvider' => $dataProviderMine,
       'searchModel' => $searchModel,
       'columns' => [
           'id', 'status_id', 'created_date' // your view columns here
       ]
   ])

3. Consider also using sub queries in your search method:

   $idAccessQuery = GroupAccess::find()
       ->where(['user_id' => $userID, 'item_name' => 'group_creator'])
       ->select('group_id');
   $query = Group::find()->where([
       'id' => $idAccessQuery
   ]);