magento can't upload csv file custom module

Question

here is all my file

Form.php

<?php
class Sample_Bigcom_Block_Adminhtml_Form_Edit_Form extends Mage_Adminhtml_Block_Widget_Form
{
 /**
 * Preparing form
 *
 * @return Mage_Adminhtml_Block_Widget_Form
 */
 protected function _prepareForm()
 {
 $form = new Varien_Data_Form(
 array(
 'id' => 'edit_form',
 'action' => $this->getUrl('*/*/save'),
 'method' => 'post',
 )
 );
 $form->setUseContainer(true);
 $this->setForm($form);
 $fieldset = $form->addFieldset('bigcom_form', array('legend'=>Mage::helper('sample_bigcom')->__('Project information')));
 $fieldset->addField('file', 'file', array(
 'label' => Mage::helper('sample_bigcom')->__('Upload'),
 'name' => 'csvupload',
 'value' => 'Uplaod',
 // 'after_element_html' => '<small>Comments</small>',
 'tabindex' => 1
 ));
 $fieldset->addField('submit', 'submit', array(
 'label' => Mage::helper('sample_bigcom')->__('Submit'),
 //'required' => true,
 'value' => 'Submit',
 //'after_element_html' => '<small>Comments</small>',
 'tabindex' => 2
 ));
 return parent::_prepareForm();
 }
}

here is my controller

BigcomController.php

<?php
class Sample_Bigcom_Adminhtml_BigcomController extends Mage_Adminhtml_Controller_Action
{
 /**
 * View form action
 */
 public function indexAction()
 {
 $this->loadLayout()
 ->_setActiveMenu('mycustomtab')
 ->_title($this->__('Index Action'));
$block11=$this->getLayout()->createBlock('sample_bigcom/adminhtml_form_edit_form');
$this->getResponse()->setBody($block11->toHtml());
$block=$this->getLayout()->createBlock('sample_bigcom/adminhtml_form_edit');
$this->getResponse()->setBody($block->toHtml());
 // my stuff
 $this->renderLayout();
 }
 public function saveAction()
 {
 print_r($_REQUEST);
 Mage::log($_FILES);
 if ($data = $this->getRequest()->getPost()) {
 $type = 'csvupload';
 echo $_FILES[$type]['name'];
 if(isset($_FILES[$type]['name']) && $_FILES[$type]['name'] != '') {
 try {
 $uploader = new Varien_File_Uploader('csvupload');
 $uploader->setAllowedExtensions(array('csv'));
 $uploader->setAllowRenameFiles(true);
 $uploader->setFilesDispersion(true);
 $path = Mage::getBaseDir('media') . DS . 'uploads' . DS;
 $uploader->save($path, $_FILES[$type]['name'] );
 $filename = $uploader->getUploadedFileName();
 } catch (Exception $e) {
 }
 }
 echo $filename;
 }
 }
}

i tried lot but every time i got error:

2015年08月08日T07:07:08+00:00 DEBUG (7): Array
(
)
2015年08月08日T07:07:08+00:00 ERR (3): Notice: Undefined index: csvupload in C:\xampp\htdocs\magentosample77\app\code\local\Sample\Bigcom\controllers\Adminhtml\BigcomController.php on line 30
2015年08月08日T07:07:08+00:00 ERR (3): Notice: Undefined variable: filename in C:\xampp\htdocs\magentosample77\app\code\local\Sample\Bigcom\controllers\Adminhtml\BigcomController.php on line 45

Answer 1

You also need to change this:

$form = new Varien_Data_Form(array(
 'id' => 'edit_form',
 'action' => $this->getUrl('*/*/import'),
 'method' => 'post',
 'enctype' => 'multipart/form-data'
 ));