1. The missing echo
2. The echo too much
3. Rules for numbers

Please join the party by adding your own favorite Yii programming errors. Be sure to leave at least a hint at the correction.

The missing echo ¶

In the view put:

<h1>Edit item: <?php $model->label; ?></h1>

Now spend your time debugging why $model->label has no value set.

The echo too much ¶

In the view put:

<h1>Edit item: <?php echo $this->widget('CWidget'); ?></h1>

"Object of class CWidget could not be converted to string." A widget may not have an echo.

Rules for numbers ¶

In the model rules() method put:

array('count', 'number', 'integerOnly'=>true),

then try

array('count', 'numeric', 'integerOnly'=>true),

and only then look it up: 'numerical'.