How do I create and call a custom class?

Yii 2.0 General Discussions
1

Hi there,

I am new to Yii2 and trying to figure out how to implement a helper class which can be accessed global in order to format date and time using the Yii2 Advanced Template.

I have created a file with custom class in /application/frontend/components/

The class file is as follows:





namespace frontend\components\formatDate;


class formatDate {

    const DATE_FORMAT = 'php:yyyymmdd';

    const DATETIME_FORMAT = 'php:yyyymmddHis';

    const TIME_FORMAT = 'php:His';

 

    public static function convert($dateStr, $type='date', $format = null) {

        if ($type === 'datetime') {

              $fmt = ($format == null) ? self::DATETIME_FORMAT : $format;

        }

        elseif ($type === 'time') {

              $fmt = ($format == null) ? self::TIME_FORMAT : $format;

        }

        else {

              $fmt = ($format == null) ? self::DATE_FORMAT : $format;

        }

        return \Yii::$app->formatter->asDate($dateStr, $fmt);

    }

}

I have added an extra line in frontend/web/index.php to use the new class file:




require(__DIR__ . '/../../vendor/autoload.php');

require(__DIR__ . '/../../vendor/yiisoft/yii2/Yii.php');

require(__DIR__ . '/../../common/config/bootstrap.php');

require(__DIR__ . '/../config/bootstrap.php');

require(__DIR__ . '/../components/formatDate.php');

I have the following action in a controller:




public function actionCreate()

    {

        $model = new Projects();

 

        if ($model->load(Yii::$app->request->post())) {

		  $model->date_created = $model->dateAttr = formatDate::convert($model->dateAttr);

           if ($model->save()) {             

             return $this->redirect(['view', 'id' => $model->id]);             

           } 

        } 

        return $this->render('create', [

            'model' => $model,

        ]);

    }

I get the following error when I submit my CRUD form to create the record:




Cannot redeclare class frontend\components\formatDate\formatDate

1. in "C:\wamp\www\application\frontend\components\formatDate.php" at line 5

this is the line that’s throwing the error:





"class formatDate {"

Can someone help to resolve this error?

Thanks

2

use it

http://www.yiiframework.com/wiki/747/write-use-a-custom-component-in-yii2-0/

3

Thanks for the link – I followed the instructions and tried to implement Tip#4 in this tutorial: http://www.yiiframework.com/wiki/684/save-and-display-date-time-fields-in-different-formats-in-yii2

But the following line seems to be throwing an error:


$model->dateAttr = formatDate::convert($model->dateAttr);

Error: "Getting unknown property: app\models\Projects::dateAttr"

Here is the function that uses "dateAttrib"


public function actionCreate()

    {

        $model = new Projects();

 

        if ($model->load(Yii::$app->request->post())) {

		  $model->date_created = Yii::$model->dateAttr = formatDate::convert($model->dateAttr);;

           if ($model->save()) {             

             return $this->redirect(['view', 'id' => $model->id]);             

           } 

        } 

        return $this->render('create', [

            'model' => $model,

        ]);

    }

I don’t understand this error and can’t figure out what I’m doing wrong… any ideas??

Thanks in advance