Magento form setting controller and block

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<?php
class Excellence_Form_Block_Adminhtml_Form_Edit extends Mage_Adminhtml_Block_Widget_Form_Container
{
    public function __construct()
    {
        parent::__construct();
                 
        $this->_objectId = 'id';
        $this->_blockGroup = 'form';
        $this->_controller = 'adminhtml_form';
        
        $this->_updateButton('save', 'label', Mage::helper('form')->__('Save'));
        $this->_updateButton('delete', 'label', Mage::helper('form')->__('Delete'));
        
        $this->_addButton('saveandcontinue', array(
            'label'     => Mage::helper('adminhtml')->__('Save And Continue Edit'),
            'onclick'   => 'saveAndContinueEdit()',
            'class'     => 'save',
        ), -100);
    }
    public function getHeaderText()
    {
        return Mage::helper('form')->__('My Form Container');
    }
}

Attached is a screenshot of the form container Admin Form Container
Important things in the class are

  • getHeaderText(): This function return’s the Text to display as the form header. You can see the form header in the screenshot attached Admin Form Container.
  • $this->_objectId: This variable is used in the form URL’s. This variable has the forms entity primary key, e.g the delete button URL would be module/controller/action/$this->_objectid/3
  • $this->_blockGroup = ‘form’; and $this->_controller = ‘adminhtml_form’; There two variables are very important, these variables are used to find FORM tabs php file. i.e the path of the form tabs php should be {$this->_blockGroup . ‘/’ . $this->_controller . ‘_’ . $this->_mode . ‘_form’}. The value of $this->_mode by default is ‘edit’. So the path of the php file which contains the form tag in our case would be ‘form/adminhtml_form_edit_form’.
  • $this->_updateButton() and $this->_addButton() are used to update/add buttons to the form container. These buttons are visible in the screenshot Admin Form Container
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