Optional Foreign Key - Call To A Member Function Getattributelabel() On A Non-Object...

Yii 1.1 General Discussion
1

I have a foreign key in my product table which is optional.

I have used the crud generator for the product table, but as you will be aware, I am now faced with turning id’s into names.

I am faced with an error caused by my customised view.php when trying to call getAttributeLabel on a non-object.

The problem is that the country field is nullable field. If the country is not set (i.e. null), i get the error.


<?php $this->widget('zii.widgets.CDetailView', array(

	'data'=>$model,

	'attributes'=>array(

		'id',

		'product_type_id',

        array(

            'label' => $model->country->getAttributeLabel('country'),

            'value' => $model->country->country

        ),

		'name',

	),

)); ?>

Any recommendations on how to fix this?

2

Does this not work for you?




        'attributes'=>array(

                'id',

                'product_type_id',

                'country.country',

                'name',

        ),
3

It does work for me! I didn’t know you could do that! :) Thank you!!!

4

Final question related to same topic, but to the scaffolded _view.php partial view.

I have modified my ProductController.php, actionIndex method as follows to:




	public function actionIndex()

	{

		$dataProvider=new CActiveDataProvider('Product', array(

                   'criteria'=>array(

                          'with'=>array('productType', 'country'),

                   ),

                   'pagination'=>array(

                         'pageSize'=>20,

            ),

        ));

now, the problem is that country is a nullable field.

As such, when I amend the _view.php as follows to display the country name:


	<b><?php echo CHtml::encode($data->getAttributeLabel('country_id')); ?>:</b>

	<?php echo CHtml::encode($data->country->country); ?>

	<br />

I get a PHP notice, trying to get a property of non-object.

5

Either




    <? if ($data->country): ?>

        <b><?php echo CHtml::encode($data->getAttributeLabel('country_id')); ?>:</b>

        <?php echo CHtml::encode($data->country->country); ?>

        <br />

    <? endif; ?>

or




    <b><?php echo CHtml::encode($data->getAttributeLabel('country_id')); ?>:</b>

    <?php echo CHtml::encode($data->country ? $data->country->country : 'None'); ?>

    <br />