How to change search model for using one field - search

Question

I have CRUD generated bu Gii. By default, the search in app use one field for each table column. How should i change my search model, for make search in all columns via alone field?
That's my model:
class UserSearch extends User
{
/**
* #inheritdoc
*/
public function rules()
{
return [
[['id', 'status', 'created_at', 'updated_at'], 'integer'],
[['username', 'auth_key', 'password_hash', 'password_reset_token', 'email'], 'safe'],
];
}
/**
* #inheritdoc
*/
public function scenarios()
{
// bypass scenarios() implementation in the parent class
return Model::scenarios();
}
/**
* Creates data provider instance with search query applied
*
* #param array $params
*
* #return ActiveDataProvider
*/
public function search($params)
{
$query = User::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,
'status' => $this->status,
'created_at' => $this->created_at,
'updated_at' => $this->updated_at,
]);
$query->andFilterWhere(['like', 'username', $this->username])
->andFilterWhere(['like', 'auth_key', $this->auth_key])
->andFilterWhere(['like', 'password_hash', $this->password_hash])
->andFilterWhere(['like', 'password_reset_token', $this->password_reset_token])
->andFilterWhere(['like', 'email', $this->email]);
return $dataProvider;
}
}

Answer 1

This is how I do it:
public function search($params)
{
..............................
if($this->keyword) {
if(preg_match("/[A-Za-z]+/", $this->keyword) == true) {
$query->andFilterWhere(['like', 'LOWER(CONCAT(name, age, WHATEVERFIELDS)), ', strtolower($this->keyword)]);
} else {
$query->andFilterWhere(['id' => $this->keyword]);
}
}
keyword is not actually a column in the db it is just a variable I attached to the search model. If the keyword is numeric I consider it an ID, you can ignore this part if you want. Otherwise I concat some fields and search in the result. You can also not concat the fields and just add a condition for each field, up to you.
You can see the full file at: https://github.com/Mihai-P/yii2-core/blob/master/models/ContactSearch.php