First of all add this in any layout file, to load the editor in the config section:
<adminhtml_system_config_edit> <update handle="editor"/> <reference name="head"> <action method="setCanLoadTinyMce"><load>1</load></action> </reference> </adminhtml_system_config_edit>
Now create your own field renderer. It has to be a block inside your module:
<?php class Namespace_Module_Block_Adminhtml_System_Config_Editor extends Mage_Adminhtml_Block_System_Config_Form_Field implements Varien_Data_Form_Element_Renderer_Interface{ protected function _getElementHtml(Varien_Data_Form_Element_Abstract $element){ $element->setWysiwyg(true); $element->setConfig(Mage::getSingleton('cms/wysiwyg_config')->getConfig()); return parent::_getElementHtml($element); } }
Now for the element inside the system.xml set the frontend_type ‘editor’ and the frontend_model your new block
<fieldname translate="label"> <label>Field label </label> <frontend_type>editor</frontend_type> <frontend_model>module/adminhtml_system_config_editor</frontend_model> <sort_order>150</sort_order> <show_in_default>1</show_in_default> <show_in_website>1</show_in_website> <show_in_store>1</show_in_store> </fieldname>
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