OpenCart Community

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    <file name="catalog/view/theme/[YOUR THEME NAME]/template/checkout/payment.tpl">

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    $('#button-coupon').after('<span class="wait">&nbsp;<img src="catalog/view/theme/[YOUR THEME NAME]/image/loading.gif" alt="" /></span>'); 

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<modification>
	<id>Opencart core file modifications for adding coupon support into the checkout sequence</id>
	<version>1.5.1.1</version>
	<vqmver>1.2.3</vqmver>
	<author>mhccorp.com</author>
	
	<file name="catalog/controller/checkout/payment.php">
		<operation>
			<search position="after"><![CDATA[$this->data['text_comments'] = $this->language->get('text_comments');]]></search>
			<add><![CDATA[
		$this->data['entry_payment_coupon'] = $this->language->get('entry_payment_coupon');
		$this->data['text_payment_coupon'] = $this->language->get('text_payment_coupon');
		$this->data['text_payment_coupon_success'] = $this->language->get('text_payment_coupon_success');
		$this->data['button_coupon'] = $this->language->get('button_coupon');
			]]></add>
		</operation>
	</file>
	<file name="catalog/language/english/checkout/checkout.php">
		<operation>
			<search position="after"><![CDATA[$_['text_comments']]]></search>
			<add><![CDATA[
$_['entry_payment_coupon']           = 'Enter your code (if available) and click "Apply Coupon"';
$_['text_payment_coupon']            = 'Discount Coupon Code:';
$_['text_payment_coupon_success']    = 'Your discount coupon has been successfuly applied to your order. You will see it in the next checkout step';
$_['button_coupon']                  = 'Apply Coupon';
			]]></add>
		</operation>
	</file>
	<file name="catalog/view/theme/yostore/template/checkout/payment.tpl">
		<operation>
			<search position="after" offset="2"><![CDATA[<textarea name="comment"]]></search>
			<add><![CDATA[
<div id="coupon">
  <b><?php echo $entry_payment_coupon; ?></b><br /><br />
  <?php echo $text_payment_coupon; ?>&nbsp;
  <input type="text" name="coupon" value="" />
  &nbsp;<a id="button-coupon" class="button"><span><?php echo $button_coupon; ?></span></a><br />
</div>
			]]></add>
		</operation>
		<operation>
			<search position="before"><![CDATA[<script type="text/javascript"><!--]]></search>
			<add><![CDATA[
<script type="text/javascript"><!--
$('#button-coupon').bind('click', function() {
	$.ajax({
		type: 'POST',
		url: 'index.php?route=total/coupon/calculate',
		data: $('#coupon :input'),
		dataType: 'json',		
		beforeSend: function() {
			$('#button-coupon').attr('disabled', true);
			$('#button-coupon').after('<span class="wait">&nbsp;<img src="catalog/view/theme/yostore/image/loading.gif" alt="" /></span>');
		},
		complete: function() {
			$('#button-coupon').attr('disabled', false);
			$('.wait').remove();
		},		
		success: function(json) {
			if (json['error']) {
				alert( json['error'] );
			} else {
				$("input[name=coupon]").val("");
				alert( "<?php echo $text_payment_coupon_success; ?>" );
			}
		}
	});
});
//--></script> 
			]]></add>
		</operation>
	</file>
	
</modification>

Code: Select all

<script type="text/javascript">
$('#button-coupon').bind('click', function() {
	$.ajax({
		type: 'POST',
		url: 'index.php?route=total/coupon/calculate',
		data: $('#coupon :input'),
		dataType: 'json',		
		beforeSend: function() {
			$('#button-coupon').attr('disabled', true);
			$('#button-coupon').after('<span class="wait">&nbsp;<img src="catalog/view/theme/default/image/loading.gif" alt="" /></span>');
		},
		complete: function() {
			$('#button-coupon').attr('disabled', false);
			$('.wait').remove();
		},		
		success: function(json) {
			if (json['error']) {
				alert( json['error'] );
			} else {
				$("input[name=coupon]").val("");
				alert( "<?php echo $text_payment_coupon_success; ?>" );
			}
		}
	});
});
</script>