以yii2计算平均值

Question

我正在制作成本会计应用程序。

我想找到3个月以上的平均价格。

Kartik GridView中生成的摘要显示的是初始股价而不是总价。

这是我的控制器

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URL

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这是我的观点

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<?php

namespace backend\controllers;

use Yii;
use backend\models\Triwulan;
use backend\models\TriwulanSearch;
use yii\web\Controller;
use yii\web\NotFoundHttpException;
use yii\filters\VerbFilter;

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

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

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

    /**
     * Displays a single Triwulan model.
     * @param string $id
     * @return mixed
     */
    public function actionView($id)
    {
        return $this->render('view', [
            'model' => $this->findModel($id),
        ]);
    }

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

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

    /**
     * Updates an existing Triwulan model.
     * If update is successful, the browser will be redirected to the 'view' page.
     * @param string $id
     * @return mixed
     */
    public function actionUpdate($id)
    {
        $model = $this->findModel($id);

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

    /**
     * Deletes an existing Triwulan model.
     * If deletion is successful, the browser will be redirected to the 'index' page.
     * @param string $id
     * @return mixed
     */
    public function actionDelete($id)
    {
        $this->findModel($id)->delete();

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

    /**
     * Finds the Triwulan model based on its primary key value.
     * If the model is not found, a 404 HTTP exception will be thrown.
     * @param string $id
     * @return Triwulan the loaded model
     * @throws NotFoundHttpException if the model cannot be found
     */
    protected function findModel($id)
    {
        if (($model = Triwulan::findOne($id)) !== null) {
            return $model;
        } else {
            throw new NotFoundHttpException('The requested page does not exist.');
        }
    }
}

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Answer 1

纠正 scaisEdge的回答中的一些语法错误

public function actionIndex()
{
    $searchModel = new TriwulanSearch();
    $dataProvider = $searchModel->search(Yii::$app->request->queryParams);


    // calc the average
    $myAverage = 0;
    $myTot  =0;
    $myCnt = 0;
    foreach ($dataProvider->models as $key => $value) {
        $myTot += $value['price'];
        $cnt++; // This should be $myCnt
    }

    if ($cnt>0){  // inside if use $myCnt
      $myAverage = myTot/$myCont // here use $myTot/$myCnt

    }


    return $this->render('index', [
        'searchModel' => $searchModel,
        'dataProvider' => $dataProvider,

       // render the avegare too
        'myAverage' => $myAverage,
    ]);
}