Allows to define new columns in the layout model.
The event handler should accept two parameters - the layout object and the form execution context string.
To add new columns to the layout model, call the
define_column() method of
the layout object.
Before you add new columns to the model, you should add them to the database (the
templates table).
public function subscribeEvents()
{
Backend::$events->addEvent('cms:onExtendTemplateModel', $this, 'extend_template_model');
Backend::$events->addEvent('cms:onExtendTemplateForm', $this, 'extend_template_form');
}
public function extend_template_model($template, $context)
{
$template->define_column('x_extra_description', 'Extra description');
}
public function extend_template_form($template, $context)
{
$template->add_form_field('x_extra_description');
}
