我是 YII2 的初学者。首先，我使用 Gii 扩展来生成我的模型和控制器。我已经在站点根目录的 config 文件夹中的 db.php 文件中设置了我的数据库。
然后我在我之前在我的管理模块中创建的那个模型上使用了 CRUD 生成器。
当我现在转到管理模块时，我收到此错误：
Class yii\db\Query contains 1 abstract method and must therefore be declared abstract or implement the remaining methods (yii\db\QueryInterface::indexBy)
我的模型：
<?php
namespace app\models;
use Yii;
use yii\base\Model;
use yii\data\ActiveDataProvider;
use yii\db\ActiveRecord;
/**
* This is the model class for table "user".
*
* @property string $id
* @property string $name
* @property string $username
* @property string $pass
* @property string $email
* @property string $user_type
* @property string $date_joined
*
* @property Authassignment $authassignment
* @property Authitem[] $itemnames
*/
class User extends ActiveRecord
{
/**
* @inheritdoc
*/
public static function tableName()
{
return 'user';
}
/**
* @inheritdoc
*/
public function rules()
{
return [
[['user_type'], 'string'],
[['date_joined'], 'required'],
[['date_joined'], 'safe'],
[['name'], 'string', 'max' => 248],
[['username'], 'string', 'max' => 45],
[['pass'], 'string', 'max' => 256],
[['email'], 'string', 'max' => 60],
[['name', 'username', 'password', 'email', 'user_type', 'date_joined'], 'safe'],
];
}
/**
* @inheritdoc
*/
public function attributeLabels()
{
return [
'id' => 'ID',
'name' => 'Name',
'username' => 'Username',
'password' => 'Password',
'email' => 'Email',
'user_type' => 'User Type',
'date_joined' => 'Date Joined',
];
}
/**
* @return \yii\db\ActiveQuery
*/
public function getAuthassignment()
{
return $this->hasOne(Authassignment::className(), ['userid' => 'id']);
}
/**
* @return \yii\db\ActiveQuery
*/
public function getItemnames()
{
return $this->hasMany(Authitem::className(), ['name' => 'itemname'])->viaTable('_authassignment', ['userid' => 'id']);
}
public function scenarios()
{
// bypass scenarios() implementation in the parent class
return Model::scenarios();
}
public function search($params)
{
$query = $this::find();
$dataProvider = new ActiveDataProvider([
'query' => $query,
]);
if (!($this->load($params) && $this->validate())) {
return $dataProvider;
}
$query->andFilterWhere([
'id' => $this->id,
'date_joined' => $this->date_joined,
]);
$query->andFilterWhere(['like', 'name', $this->name])
->andFilterWhere(['like', 'username', $this->username])
->andFilterWhere(['like', 'pass', $this->pass])
->andFilterWhere(['like', 'email', $this->email])
->andFilterWhere(['like', 'user_type', $this->user_type]);
return $dataProvider;
}
}
我试图使类抽象，但这给出了错误
Cannot instantiate abstract class app\models\User
我究竟做错了什么。
谢谢。
编辑 ：
我已将网络服务器上的 php 升级到 5.5.10，这已修复此错误，我正在运行 V5.4