通过连接表yii2的相关模型

如何解决通过连接表yii2的相关模型

我有3个设备表，一个用户表和一个user_equipment_mapping表。

设备： 1.笔记本电脑：PK-ID，laptop_model，laptop_series，laptop_date_acq 2.Display：PK-ID，display_model，display_series，display_date_acq 3.Phone：PK-ID，phone_model，phone_series，phone_date_acq

用户：ID-PK，用户名，密码

User_Equipment_mapping：ID-PK，user_id-FK（来自tbl用户的id），laptop_id-FK（来自tbl笔记本电脑的id），display_id-FK（来自tbl显示器的id），phone_id-FK（来自tbl手机的id），开始日期，结束日期。

对我来说，这是一个多对多的关系。

我想获得用户设备/通过联结表创建用户阵列，以便我可以使用gridview中的下拉菜单将设备分配给用户。我需要您的帮助来吸引用户，我已经在clas UserEquipmentMapping中创建了一个方法，并试图在视图中使用print_r（$ users），但它给了我以下错误：不在对象上下文中使用$ this

谢谢您的任何建议！

控制器：

<?php

namespace app\controllers;

use Yii;
use app\models\UserEquipmentMapping;
use app\models\UserequipmentmappingSearch;
use yii\web\Controller;
use yii\web\NotFoundHttpException;
use yii\filters\VerbFilter;

/**
 * UserequipmentmappingController implements the CRUD actions for UserEquipmentMapping model.
 */
class UserequipmentmappingController extends Controller
{
    /**
     * {@inheritdoc}
     */
    public function behaviors()
    {
        return [
            'verbs' => [
                'class' => VerbFilter::className(),'actions' => [
                    'delete' => ['POST'],],];
    }

    /**
     * Lists all UserEquipmentMapping models.
     * @return mixed
     */
    public function actionIndex()
    {
        $searchModel = new UserequipmentmappingSearch();
        $dataProvider = $searchModel->search(Yii::$app->request->queryParams);

        return $this->render('index',[
            'searchModel' => $searchModel,'dataProvider' => $dataProvider,]);
    }

    /**
     * Displays a single UserEquipmentMapping model.
     * @param integer $id
     * @return mixed
     * @throws NotFoundHttpException if the model cannot be found
     */
    public function actionView($id)
    {
        return $this->render('view',[
            'model' => $this->findModel($id),]);
    }

    /**
     * Creates a new UserEquipmentMapping model.
     * If creation is successful,the browser will be redirected to the 'view' page.
     * @return mixed
     */
    public function actionCreate()
    {
        $model = new UserEquipmentMapping();

        if ($model->load(Yii::$app->request->post()) && $model->save()) {
            return $this->redirect(['view','id' => $model->id]);
        }

        return $this->render('create',[
            'model' => $model,]);
    }

    /**
     * Updates an existing UserEquipmentMapping model.
     * If update is successful,the browser will be redirected to the 'view' page.
     * @param integer $id
     * @return mixed
     * @throws NotFoundHttpException if the model cannot be found
     */
    public function actionUpdate($id)
    {
        $model = $this->findModel($id);

        if ($model->load(Yii::$app->request->post()) && $model->save()) {
            return $this->redirect(['view','id' => $model->id]);
        }

        return $this->render('update',]);
    }

    /**
     * Deletes an existing UserEquipmentMapping model.
     * If deletion is successful,the browser will be redirected to the 'index' page.
     * @param integer $id
     * @return mixed
     * @throws NotFoundHttpException if the model cannot be found
     */
    public function actionDelete($id)
    {
        $this->findModel($id)->delete();

        return $this->redirect(['index']);
    }

    /**
     * Finds the UserEquipmentMapping model based on its primary key value.
     * If the model is not found,a 404 HTTP exception will be thrown.
     * @param integer $id
     * @return UserEquipmentMapping the loaded model
     * @throws NotFoundHttpException if the model cannot be found
     */
    protected function findModel($id)
    {
        if (($model = UserEquipmentMapping::findOne($id)) !== null) {
            return $model;
        }

        throw new NotFoundHttpException('The requested page does not exist.');
    }
}

型号：

<?php

namespace app\models;

use Yii;

/**
 * This is the model class for table "user_equipment_mapping".
 *
 * @property int $id
 * @property int $user_id
 * @property int|null $laptop_id
 * @property int|null $phone_id
 * @property int|null $display_id
 * @property string|null $start_date
 * @property string|null $stop_date
 *
 * @property Display $display
 * @property Laptop $laptop
 * @property Phone $phone
 * @property User $user
 */
class UserEquipmentMapping extends \yii\db\ActiveRecord
{
    /**
     * {@inheritdoc}
     */
    public static function tableName()
    {
        return 'user_equipment_mapping';
    }

    /**
     * {@inheritdoc}
     */
    public function rules()
    {
        return [
            [['user_id'],'required'],[['user_id','laptop_id','phone_id','display_id'],'integer'],[['start_date','stop_date'],'safe'],[['display_id'],'exist','skipOnError' => true,'targetClass' => Display::className(),'targetAttribute' => ['display_id' => 'id']],[['laptop_id'],'targetClass' => Laptop::className(),'targetAttribute' => ['laptop_id' => 'id']],[['phone_id'],'targetClass' => Phone::className(),'targetAttribute' => ['phone_id' => 'id']],[['user_id'],'targetClass' => User::className(),'targetAttribute' => ['user_id' => 'id']],];
    }

    /**
     * {@inheritdoc}
     */
    public function attributeLabels()
    {
        return [
            'id' => 'ID','user_id' => 'User ID','laptop_id' => 'Laptop ID','phone_id' => 'Phone ID','display_id' => 'Display ID','start_date' => 'Start Date','stop_date' => 'Stop Date',];
    }

    /**
     * Gets query for [[Display]].
     *
     * @return \yii\db\ActiveQuery|DisplayQuery
     */
    public function getDisplay()
    {
        return $this->hasOne(Display::className(),['id' => 'display_id']);
    }

    /**
     * Gets query for [[Laptop]].
     *
     * @return \yii\db\ActiveQuery|LaptopQuery
     */
    public function getLaptop()
    {
        return $this->hasOne(Laptop::className(),['id' => 'laptop_id']);
    }

    /**
     * Gets query for [[Phone]].
     *
     * @return \yii\db\ActiveQuery|PhoneQuery
     */
    public function getPhone()
    {
        return $this->hasOne(Phone::className(),['id' => 'phone_id']);
    }

    /**
     * Gets query for [[User]].
     *
     * @return \yii\db\ActiveQuery|UserQuery
     */
    public function getUser()
    {
        return $this->hasOne(User::className(),['id' => 'user_id']);
    }
    
    public function getUsername()
    {
        return $this->hasMany(User::className(),['user_id' => 'id'])
                    ->viaTable('user');
    }

    /**
     * {@inheritdoc}
     * @return UserEquipmentMappingQuery the active query used by this AR class.
     */
    public static function find()
    {
        return new UserEquipmentMappingQuery(get_called_class());
    }
}

创建：

<?php

use yii\helpers\Html;

/* @var $this yii\web\View */
/* @var $model app\models\UserEquipmentMapping */

$this->title = 'Create User Equipment Mapping';
$this->params['breadcrumbs'][] = ['label' => 'User Equipment Mappings','url' => ['index']];
$this->params['breadcrumbs'][] = $this->title;
?>


<?php 
use app\models\UserEquipmentMapping;
$users =UserEquipmentMapping::getUsername();
print_r($users);die;
?>

<div class="user-equipment-mapping-create">

    <h1><?= Html::encode($this->title) ?></h1>

    <?= $this->render('_form',[
        'model' => $model,]) ?>

</div>

通过连接表yii2的相关模型

如何解决通过连接表yii2的相关模型

相关推荐