$this->getRequest()->getPost() return empty array in magento back end form submission - forms

Question

I am creating a magento custom admin module and a form. I want update this form but not updating. In Controller, under SaveAction() I print $this->getRequest()->getPost() and get empty array. please help me. Below code for form declination..
protected function _prepareForm() {
$form = new Varien_Data_Form(array(
'id' => 'edit_form1',
'action' => $this->getUrl('*/*/save', array('id' => $this->getRequest()->getParam('id'))),
'method' => 'post',
'enctype' => 'multipart/form-data'
)
);
$form->setUseContainer(true);
$this->setForm($form);
return parent::_prepareForm();
}
And Create a from filed set like
protected function _prepareForm() {
$form = new Varien_Data_Form();
$this->setForm($form);
$fieldset = $form->addFieldset('qbanner_form', array('legend' => Mage::helper('qbanner')->__('Art information')));
$fieldset->addField('name', 'text', array(
'label' => Mage::helper('catalog')->__('Product'),
'required' => false,
'name' => 'name',
));
$fieldset->addField('artist_name', 'text', array(
'label' => Mage::helper('catalog')->__('Artist Name'),
// 'name' => 'artist_name',
'value' => Mage::helper('catalog')->__('Art Name value'),
));
$fieldset->addField('bca_status', 'select', array(
'label' => Mage::helper('catalog')->__('Art status'),
'name' => 'bca_status',
'values' =>$this->_getAttributeOptions('bca_status'),
));
$fieldset->addField('reason', 'editor', array(
'name' => 'reason',
'label' => Mage::helper('catalog')->__('Reason'),
'title' => Mage::helper('catalog')->__('Reason'),
'style' => 'width:440px; height:300px;',
'wysiwyg' => true,
'required' => false,
));
$fieldset->addField('thumbnail', 'text', array(
'label' => Mage::helper('catalog')->__('Art status'),
'name' => 'thumbnail',
//'values' =>$this->_getAttributeOptions('thumbnail'),
//'renderer' => 'Qaz_Qbanner_Block_Adminhtml_Qbanner_Grid_Renderer_Image'
));
if (Mage::getSingleton('adminhtml/session')->getQbannerData()) {
$form->setValues(Mage::getSingleton('adminhtml/session')->getQbannerData());
Mage::getSingleton('adminhtml/session')->setQbannerData(null);
} elseif (Mage::registry('qbanner_data')) {
$form->setValues(Mage::registry('qbanner_data')->getData());
}
return parent::_prepareForm();
}
protected function _getAttributeOptions($attribute_code)
{
$attribute = Mage::getModel('eav/config')->getAttribute('catalog_product', $attribute_code);
$options = array();
foreach( $attribute->getSource()->getAllOptions(true, true) as $option ) {
$options[$option['value']] = $option['label'];
}
return $options;
}
Here my
SaveAction()
public function saveAction() {
echo print_r( $this->getRequest()->getPost());
}
I have tied verious post. Any ideas?

Answer 1

Common error for all. You just need to add form key to your form.
Just add this line below your form declaration.
<input type="hidden" name="form_key" value="<?php echo Mage::getSingleton('core/session')->getFormKey(); ?>" />
Like this
<form action="<?php echo Mage::helper("adminhtml")->getUrl("demo/adminhtml_demo/demo");?>" method="post" id="custom-payment-form" enctype="multipart/form-data">
<input type="hidden" name="form_key" value="<?php echo Mage::getSingleton('core/session')->getFormKey(); ?>" />
Add this. Now you can get parameters by $this->getRequest()->getPost().

Answer 2

you can get variable of post and get method in magento with $this->getRequest()->getParams(); getParams() method But if you want to get exactly some variable data then use getParam('id');
/magento/catalog/product/view/id/406/category/14
$this->getRequest()->getParam('id') // 406
$this->getRequest()->getParams(); //get all get and post variables