Helpful behaviors

Save behavior to app\behaviors. If you use advanced app, then save to common\behaviors and change namespace namespace app\behaviors;.

Yii2-SetColumnBehavior

Behavior for working with MySQL column type SET. Behavior for automatical convert string => array and back.

How to use:

In model we need to set model attributes which have type SET:

/**
 *  @return [] behaviors
 */
public function behaviors()
{
   return [
       'SetColumn' => [
            'class' => app\behaviors\SetColumnBehavior::className(),
            'attributes' => 'weekdays',
        ]
    ];
}

public function rules()
{
    return [
       [['weekdays'], 'each', 'rule' => ['in', 'range' => ['sun', 'mon', 'tue', 'wed', 'thu', 'fri', 'sat']]],
    ];
}

And render in view:

echo $form->field($model, 'weekdays')->checkboxList(['sun' => 'sun', 'mon' => 'mon', 'tue' => 'tue', 'wed' => 'wed', 'thu' => 'thu', 'fri' => 'fri', 'sat' => 'sat']);

Yii2-ImageBehavior

Easy way to attach image in your model. Automatically assign UploadFile instance to your attribute, stores and remove old image. But validation rules you need to set.

How to use:

Attach behavior to your model:

    /**
     *  @return [] behaviors
     */
    public function behaviors()
    {
    	return [
                'imageBehavior' => [
                    'class' => \path\to\ImageBehavior::className(),
                    'imageAttribute' => 'image',  //Attribute of model which using to upload image
                    'uploadPath' => '@webroot/uploads',  //Path to upload dir
                    'uploadUrl' => '@web/uploads',  //Url to upload dir	
                ],
        ];
    }

Examples

In controller behavior absolutely imperceptible:

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

As there helper methods:

$model = Model::findOne();
echo $model->imageUrl;  //returned url of current image
echo $model->imagePath; //returned path of current image

Yii2 - DateToTimestamp

Behavior for automatically change date to timestamp and back. It allows you to store the date in the timestamp format, and show in the desired format. #How to use Exist a few ways for attaching attributes, basic:

    /**
     *  @return [] behaviors
     */
    public function behaviors()
    {
        return [
            'DateToTimestampBehavior' => [
                'class' => \path\to\DateToTimestampBehavior::className(),
                'attributes' => 'delivery_date', // Attribute of model with date format
                'format' => 'M/d/Y', // Format for convert
            ],
        ];
    }

List of attributes:

    /**
     *  @return [] behaviors
     */
    public function behaviors()
    {
        return [
            'DateToTimestampBehavior' => [
                'class' => \path\to\DateToTimestampBehavior::className(),
                'attributes' => [
                    'delivery_date',
                    'schedule_date',
                    'register_date',
                ],
                'format' => 'M/d/Y', // Format for convert
            ],
        ];
    }

Customize some attributes:

    /**
     *  @return [] behaviors
     */
    public function behaviors()
    {
        return [
            'DateToTimestampBehavior' => [
                'class' => \path\to\DateToTimestampBehavior::className(),
                'attributes' => [
                    'delivery_date',
                    [
                        'attribute' => 'schedule_date',
                        'format' => 'Y.m.d H:i',
                    ],
                    'register_date',
                    [
                        'attribute' => 'birth_date',
                        'format' => 'd M',
                    ],
                ],
                'format' => 'M/d/Y', // Format for convert
            ],
        ];
    }