public function up()
{
$table = Vote::tableName();
$this->createTable($table, ['answer_id' => $this->integer(), 'user_id' => $this->integer(), 'created_at' => $this->integer()]);
MigrationHelper::addForeignKey($table, 'answer_id', Answer::tableName(), 'id', 'CASCADE', 'CASCADE');
MigrationHelper::addForeignKey($table, 'user_id', User::tableName(), 'id', 'SET NULL', 'CASCADE');
}
/**
* Finds the Answer model based on its primary key value.
* If the model is not found, a 404 HTTP exception will be thrown.
* @param integer $id
* @return Answer the loaded model
* @throws NotFoundHttpException if the model cannot be found
*/
protected function findModel($id)
{
if (($model = Answer::findOne($id)) !== null) {
return $model;
} else {
throw new NotFoundHttpException('The requested page does not exist.');
}
}
/**
* Creates data provider instance with search query applied
*
* @param array $params
*
* @return ActiveDataProvider
*/
public function search($params)
{
$query = Answer::find();
// add conditions that should always apply here
$dataProvider = new ActiveDataProvider(['query' => $query]);
$this->load($params);
if (!$this->validate()) {
// uncomment the following line if you do not want to return any records when validation fails
// $query->where('0=1');
return $dataProvider;
}
// grid filtering conditions
$query->andFilterWhere(['id' => $this->id, 'question_id' => $this->question_id]);
$query->andFilterWhere(['like', 'title', $this->title]);
return $dataProvider;
}
/**
* @return \yii\db\ActiveQuery
*/
public function getAnswer()
{
return $this->hasOne(Answer::className(), ['id' => 'answer_id'])->from(['answer' => Answer::tableName()]);
}
/**
* @return \yii\db\ActiveQuery
*/
public function getAnswers()
{
return $this->hasMany(Answer::className(), ['question_id' => 'id']);
}
public function down()
{
$this->dropTable(Answer::tableName());
}
