/**
* 通过ID获取指定问题
*/
protected function findAnswer($id, \Closure $callback = null)
{
$query = Answer::find();
$callback !== null && $callback($query);
if (($model = $query->andWhere(['id' => $id])->one()) !== 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, ActiveQuery $query = null)
{
$query === null && ($query = Answer::find());
$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, 'pid' => $this->pid, 'author_id' => $this->author_id, 'view_count' => $this->view_count, 'comment_count' => $this->comment_count, 'favorite_count' => $this->favorite_count, 'like_count' => $this->like_count, 'hate_count' => $this->hate_count, 'status' => $this->status, 'created_at' => $this->created_at, 'updated_at' => $this->updated_at]);
$query->andFilterWhere(['like', 'subject', $this->subject])->andFilterWhere(['like', 'content', $this->content])->andFilterWhere(['like', 'type', $this->type]);
return $dataProvider;
}
/**
* 添加回答
* @param Answer $model
* @return mixed
*/
public function addAnswer(Answer $model)
{
$model->setAttributes(['pid' => $this->id]);
if ($result = $model->save()) {
$model->setActive();
//TODO 后期可以改为开关审核问题
}
return $result;
}
/**
* 创建新回答
* @param $question
* @return Answer
*/
protected function newAnswer(Question $question)
{
$model = new Answer();
if ($model->load(Yii::$app->request->post())) {
$model->author_id = Yii::$app->user->id;
if ($question->addAnswer($model)) {
return $this->message('回答发表成功!', 'success', $this->refresh(), 'flash');
}
}
return $model;
}
/**
* 获取用户喜欢的指定回答
* @return static
*/
public function getLikeAnswer($id)
{
return $this->hasOne(Answer::className(), ['id' => 'target_id'])->via('likes', function ($query) use($id) {
$query->andWhere(['target_type' => Answer::TYPE, 'target_id' => $id]);
$query->multiple = false;
});
}
