Button redirecting to the grid page - magento-1.7

Question

I have a custom module 'banner' and in which I have added a button in its second tab(only two tabs for the module). when click on that button, it is submitting my banner automatically and then go to the grid page(i e it acts as just another save button). But the function of this button is to add an uploading image field.ie whenever the button is clicked, it should add an image form field to my tab file. This is my tab file.
<?php
class Karaokeshop_Banner_Block_Adminhtml_Banner_Edit_Tab_Image extends Mage_Adminhtml_Block_Widget_Form
{
protected function _prepareForm()
{
$form = new Varien_Data_Form();
$this->setForm($form);
$fieldset = $form->addFieldset('banner_image', array('legend'=>Mage::helper('banner')->__('Banner Image')));
//declaring a new custom form field and adding
$fieldset->addType('add_button', 'Karaokeshop_Banner_Block_Adminhtml_Banner_Edit_Tab_Field_Custom');
$fieldset->addField('banner_img_add_button', 'add_button', array(
'title' => Mage::helper('banner')->__('Add Banner Image'),
'id' => 'add_banner_img_button',
'class' => 'scalable save',
'style' => '',
'onclick' => 'banner.add(this)',
'type' => 'button',
));
return parent::_prepareForm();
}
}
this is my button defining file
<?php
class Karaokeshop_Banner_Block_Adminhtml_Banner_Edit_Tab_Field_Custom extends Varien_Data_Form_Element_Abstract
{
public function __construct($attributes=array())
{
parent::__construct($attributes);
}
public function getElementHtml()
{
$value = $this->getTitle();
$onclick=$this->getOnclick();
$class=$this->getClass();
$id=$this->getId();
$style=$this->getStyle();
$type=$this->getType();
$html='<button id="'.$id.'" class="'.$class.'" style="'.$style.'" onclick="'.$onclick.'" type="'.$type.'" title="'.$value.'">'.$value.' </button>';
$html .= '<p id="' . $this->getHtmlId() . '"'. $this->serialize($this->getHtmlAttributes()) .'>
<script type="text/javascript">
//<![CDATA[
var banner =
{
add : function(obj)
{
},
};
//]]>
</script>
</p>';
return $html;
}
}
what should i do to change my button to an add button? what should I do to avoid this submitting functionality of the button. Please help me. Thanks in advance

Answer 1

First you need to call your phtml from block like this :
class My_Moudles_Block_Adminhtml_Image_Edit_Tab_Form extends Mage_Adminhtml_Block_Widget_Form
{
public function __construct()
{
parent::__construct();
$this->setTemplate('modules/imageupload.phtml');
$this->setFormAction(Mage::getUrl('*/*/imageupload'));
}
then create file in adminhtml/default/default/template/yourmodule/imageupload.phtml and put this code there.
<div class="entry-edit">
<div class="entry-edit-head">
<h4 class="icon-head head-edit-form fieldset-legend"><?php echo $this->__('General')?></h4>
<div class="form-buttons"></div>
</div>
<form id="imageform" method="post" action="<? echo $this->getFormAction(); ?>">
<div id="rules_form" class="fieldset ">
<div class="hor-scroll">
<table cellspacing="0" class="form-list">
<tbody>
<tr>
<td class="label"><?php echo $this->__('Add Image')?></td>
<td class="grid tier" colspan="10">
<table cellspacing="0" id="chain_tiers" class="chain border" style=" width:465px; ">
<thead>
<tr class="headings">
<th><?php echo $this->__('Image')?></th>
<th class="last"><?php echo $this->__('Action')?></th>
</tr>
<tr class="template no-display" id="email_chain_add_template">
<td class="nobr">
<input type="file" id="chain_Image" value="0" name="imageg" class="requried-entry input-text">
</td>
<td class="last"><input type="hidden" value="" disabled="no-template" class="delete" name="email_chain[__index__][delete]"><button onclick="emailsControl.deleteItem(event);return false" class="scalable delete icon-btn delete-product-option" title="Delete Image"><span><?php echo $this->__('Delete')?></span></button></td>
</tr>
</thead>
<tfoot>
<tr>
<td></td>
<td class="a-right" colspan="6">
<button style="" onclick="emailsControl.addItem()" class="scalable add" type="button" title="Add email" id="id"><span><span><span><?php echo $this->__('Add Image')?></span></span></span></button></td>
</tr>
</tfoot>
<tbody id="email_chain_container">
<tr>
<td class="nobr">
<input type="file" id="chain_Image" value="" name="Image[]" class="input-text">
</td>
<td class="last"><input type="hidden" value="" class="delete" name="email_chain[delete][]"><button onclick="emailsControl.deleteItem(event);return false" class="scalable delete icon-btn delete-product-option" title="Delete Image"><span><?php echo $this->__('Delete')?></span></button></td>
</tr>
</tbody>
</table>
<script type="text/javascript">
//<![Cchain[
var emailsControl = {
itemsCount : 0,
deleteButton : false,
addItem : function () {
var chain = {};
chain.TEMPLATE_ID = 0;
chain.index = this.itemsCount++;
if (arguments.length == 1) {
chain.TEMPLATE_ID = arguments[0];
}
var s = '<tr>' + $('email_chain_add_template').innerHTML.replace(/__index__/g, '#{index}').replace(/\sdisabled="?no-template"?/g, ' ').replace(/disabled/g, ' ').replace(/="'([^']*)'"/g, '="$1"') + '</tr>';
var template = new Template(s);
Element.insert($('email_chain_container'), {'bottom': template.evaluate(chain)});
$('chain_row_'+chain.index+'_TEMPLATE').value = chain.TEMPLATE_ID;
maxItemsCount++;
},
deleteItem : function(event) {
var tr = Event.findElement(event, 'tr');
if (tr) {
jQuery(tr).remove();
}
}
}
var maxItemsCount = 2;
//]]>
</script>
</td>
</tr>
</tbody>
</table>
</div></form>
</div>
</div>
Hopes this will solve your issue.
For edit you can do it like this :
<tbody id="email_chain_container">
<?php foreach($images as $row){ ?><tr>
<td class="nobr">
your image code
</td></tr>