I would like to add a new Field (Select list of all menu-items) to the menu item-edit form. To do so I was setting up an system plugin with the following directory structure:
languageroot/languageroot.php
languageroot/form/form.xml
As you can see in the posted code, that is all very basic to try out.
Only after adding the following lines:
<li
<?php echo $this-form-getLabel( 'langroot-text', 'main' )?
<?php echo $this-form-getInput('langroot-text', 'main' ); ?
</li
to: /admininstrator/components/com_menus/views/item/tmpl/edit.php
a textfield shows up.
Is it possible to inject the field without touching the edit.php? Is there anywhere a good tutorial about the JForm api? Is a system-plugin the right kind, or could it be a content plugin, or should it even be a component?