need to add custom template file inside form container magento admin

Question

What i have tried is the following.

I have a class which extends Mage_Adminhtml_Block_Widget_Form. Inside that i have the _prepareLayout function. Now i have set a block inside that function like this.

echo $this->getLayout()->createBlock('adminhtml/template')->setTemplate('path/tothefile.phtml')->toHtml();

Its working. But the issue is i have a javascript code inside this .phtml file and its running twice.

May be because of the core/text_list block type of widget instance or for the toHtml() . Do you guys have any idea whats wrong.

• sandip: have you specified that block in layout.xml ?
• Kingshuk Deb: Why i should add it inside layout.xml ??...I was trying to add it from block. However i managed to do it. Thanks.
• laketuna: @KingshukDeb, how did you add a custom template file for the admin form?
• sandip: @KingshukDeb $this->getLayout()->createBlock('core/text', 'example-block')->setText('<div id="messages"><ul class="messages"><li class="error-msg"><ul><li><span>CreateBlock.</span></li></ul></li></ul></div>')

Answer 1

Add __toHtml() method in form container block.

 protected function _toHtml() {
 $tabsContainer = $this->getLayout()->createBlock('core/text', 'example-block')->setText('<div id="messages"><ul class="messages"><li class="error-msg"><ul><li><span>CreateBlock.</span></li></ul></li></ul></div>');
 return parent::_toHtml() .
 $tabsContainer->toHtml() .
 '<div data id="tabs_container"></div>';
 }