How to add WYSIWYG editor button editor in backend block form

Question

when editing product there is wysiwyg button like this wysiwyg editor button

this button will popup wysiwyg editor when you click it and the value goes to the field text with html tag, i've tried the solution in here, but it didnt work at all

is there a way to add it to one of my fieldset that goes like this

$fieldset->addField(
 'custom_field',
 'text',
 array(
 'name' => 'custom_field0',
 'container_id' => 'attribute-custom0',
 'placeholder' => $this->__('Custom Attribute Field'),
 ));

• Piyush: try this - piyushsuthar.wordpress.com/2015/07/13/…
• Harshil Parekh: @Idham Choudry : solved your problem from my answer?
• Idham Choudry: @Piyush Fatal error: Class 'Mage_Modulename_Helper_Data' not found in C:\xampp\htdocs\ourdreamparty\app\Mage.php on line 555
• Piyush: @IdhamChoudry create a helper file in app/code/local/Namespace/Module/Helper/ directory
• Idham Choudry: @Piyush i already have helper data

Answer 1

Try Below Code:

$fieldset->addField(
 'custom_field',
 'editor',
 array(
 'name' => 'custom_field0',
 'container_id' => 'attribute-custom0',
 'placeholder' => $this->__('Custom Attribute Field'),
 'config' => Mage::getSingleton('cms/wysiwyg_config')->getConfig(),
 'wysiwyg' => true,
 ));

• Idham Choudry: @the field is showing wysiwyg editor but not the way i want, what i want is a button like image above to open wysiwyg editor in pop up mode
• Harshil Parekh: pop up mode? than I think you need put jqeury for that