Magento - Controller to Ajax Estimate Shipping: Load Block and display phtml - ajax

Question

I copied estimatePostAction and made estimateAjaxPostAction (overriding core - I did not hack the core). The controller action works as well (class Mage_Checkout_CartController).
Now I want to get/create a block for replacing shipping block after estimate shipping with ajax. I tried this:
public function estimateAjaxPostAction()
{
$country = (string) $this->getRequest()->getParam('country_id');
$postcode = (string) $this->getRequest()->getParam('estimate_postcode');
$city = (string) $this->getRequest()->getParam('estimate_city');
$regionId = (string) $this->getRequest()->getParam('region_id');
$region = (string) $this->getRequest()->getParam('region');
$this->_getQuote()->getShippingAddress()
->setCountryId($country)
->setCity($city)
->setPostcode($postcode)
->setRegionId($regionId)
->setRegion($region)
->setCollectShippingRates(true);
$this->_getQuote()->save();
//$this->_goBack();
$this->loadLayout();
$block = $this->getLayout()->createBlock('Mage_Checkout_Block_Cart_Shipping','checkout.cart.shipping.ajax',array('template' => 'checkout/cart/shipping.phtml'));
if($block) {
$response = array();
$response['shipping'] = $block->toHtml();
$this->getResponse()->setBody(Mage::helper('core')->jsonEncode($response));
}
}
The block checkout.cart.shipping.ajax was created. But toHtml() returns nothing.
My JSON returns:
{"shipping":""}
Why toHtml method doesn't work?
Edit: My block code (checkout/cart/shipping.phtml)
<?php /** #var $this Mage_Checkout_Block_Cart_Shipping */ ?>
<div class="row contem-shipping">
<div class="col-xs-10 shipping">
<div class="text-ship">
<h2><?php echo $this->__('Calcular o frete:') ?></h2>
<p><?php echo $this->__('Insira o CEP do endereço<br />no campo ao lado.') ?></p>
</div>
<div class="shipping-form">
<form action="<?php echo $this->getUrl('checkout/cart/estimatePost') ?>" method="post" id="shipping-zip-form">
<ul class="form-list">
<li class="no-display">
<div class="input-box">
<?php echo Mage::getBlockSingleton('directory/data')->getCountryHtmlSelect($this->getEstimateCountryId()) ?>
</div>
</li>
<?php if($this->getStateActive()): ?>
<li>
<label for="region_id"<?php if ($this->isStateProvinceRequired()) echo ' class="required"' ?>><?php if ($this->isStateProvinceRequired()) echo '<em>*</em>' ?><?php echo $this->__('State/Province') ?></label>
<div class="input-box">
<select id="region_id" name="region_id" title="<?php echo $this->__('State/Province') ?>" style="display:none;"<?php echo ($this->isStateProvinceRequired() ? ' class="validate-select"' : '') ?>>
<option value=""><?php echo $this->__('Please select region, state or province') ?></option>
</select>
<script type="text/javascript">
//<![CDATA[
$('region_id').setAttribute('defaultValue', "<?php echo $this->getEstimateRegionId() ?>");
//]]>
</script>
<input type="text" id="region" name="region" value="<?php echo $this->escapeHtml($this->getEstimateRegion()) ?>" title="<?php echo $this->__('State/Province') ?>" class="input-text" style="display:none;" />
</div>
</li>
<?php endif; ?>
<?php if($this->getCityActive()): ?>
<li>
<label for="city"<?php if ($this->isCityRequired()) echo ' class="required"' ?>><?php if ($this->isCityRequired()) echo '<em>*</em>' ?><?php echo $this->__('City') ?></label>
<div class="input-box">
<input class="input-text<?php if ($this->isCityRequired()):?> required-entry<?php endif;?>" id="city" type="text" name="estimate_city" value="<?php echo $this->escapeHtml($this->getEstimateCity()) ?>" />
</div>
</li>
<?php endif; ?>
<li>
<div class="input-box">
<input class="input-text validate-postcode<?php if ($this->isZipCodeRequired()):?> required-entry<?php endif;?>" type="text" id="postcode" name="estimate_postcode" value="<?php echo $this->escapeHtml($this->getEstimatePostcode()) ?>" />
</div>
</li>
</ul>
<div class="buttons-set">
<button id="button-cep" style="width: 100px;" type="button" title="<?php echo $this->__('Get a Quote') ?>" onclick="calculaFreteAjax(jQuery('#postcode').val()); return false;" class="btn btn-2 btn-2a"><?php echo $this->__('Get a Quote') ?></button>
</div>
</form>
<script type="text/javascript">
//<![CDATA[
new RegionUpdater('country', 'region', 'region_id', <?php echo $this->helper('directory')->getRegionJson() ?>);
//]]>
</script>
<?php $_shippingRateGroups = $this->getEstimateRates(); ?>
<?php if ($_shippingRateGroups): ?>
<form id="co-shipping-method-form" action="<?php echo $this->getUrl('checkout/cart/estimateUpdatePost') ?>">
<dl class="sp-methods">
<?php foreach ($_shippingRateGroups as $code => $_rates): ?>
<dt><?php echo $this->escapeHtml($this->getCarrierName($code)) ?></dt>
<dd>
<ul>
<?php foreach ($_rates as $_rate): ?>
<li<?php if ($_rate->getErrorMessage()) echo ' class="error-msg"';?>>
<?php if ($_rate->getErrorMessage()): ?>
<?php echo $this->escapeHtml($_rate->getErrorMessage()) ?>
<?php else: ?>
<input name="estimate_method" type="radio" value="<?php echo $this->escapeHtml($_rate->getCode()) ?>" id="s_method_<?php echo $_rate->getCode() ?>"<?php if($_rate->getCode()===$this->getAddressShippingMethod()) echo ' checked="checked"' ?> class="radio" />
<label for="s_method_<?php echo $_rate->getCode() ?>"><?php echo $this->escapeHtml($_rate->getMethodTitle()) ?>
<?php $_excl = $this->getShippingPrice($_rate->getPrice(), $this->helper('tax')->displayShippingPriceIncludingTax()); ?>
<?php $_incl = $this->getShippingPrice($_rate->getPrice(), true); ?>
<?php echo $_excl; ?>
<?php if ($this->helper('tax')->displayShippingBothPrices() && $_incl != $_excl): ?>
(<?php echo $this->__('Incl. Tax'); ?> <?php echo $_incl; ?>)
<?php endif; ?>
</label>
<?php endif ?>
</li>
<?php endforeach; ?>
</ul>
</dd>
<?php endforeach; ?>
</dl>
</form>
<?php endif; ?>
<script type="text/javascript">
//<![CDATA[
var coShippingMethodForm = new VarienForm('shipping-zip-form');
var countriesWithOptionalZip = <?php echo $this->helper('directory')->getCountriesWithOptionalZip(true) ?>;
coShippingMethodForm.submit = function () {
var country = $F('country');
var optionalZip = false;
for (i=0; i < countriesWithOptionalZip.length; i++) {
if (countriesWithOptionalZip[i] == country) {
optionalZip = true;
}
}
if (optionalZip) {
$('postcode').removeClassName('required-entry');
}
else {
$('postcode').addClassName('required-entry');
}
return VarienForm.prototype.submit.bind(coShippingMethodForm)();
}
//]]>
</script>
</div>
</div>
<div class="col-xs-6">
<?php
$totalItemsInCart = Mage::helper('checkout/cart')->getItemsCount(); //total items in cart
$totals = Mage::getSingleton('checkout/session')->getQuote()->getTotals(); //Total object
$subtotal = $totals["subtotal"]->getValue(); //Subtotal value
$grandtotal = $totals["grand_total"]->getValue(); //Grandtotal value
if(isset($totals['discount']) && $totals['discount']->getValue()) {
$discount = $totals['discount']->getValue(); //Discount value if applied
} else {
$discount = '';
}
$shipping = Mage::helper('checkout')->getQuote()->getShippingAddress()->getData();
$tax = $shipping["shipping_amount"];
/*if( $totals["tax"]->getValue()) {
$tax = $totals["tax"]->getValue(); //Tax value if present
} else {
$tax = '';
}*/
?>
<table class="totals-cart">
<tr>
<td class="total-tile">
Subtotal do pedido:
</td>
<td class="total-price">
<?php echo Mage::helper('core')->currency($subtotal, true, false); ?>
</td>
</tr>
<tr>
<td class="total-tile">
Frete:
</td>
<td class="total-price">
<?php echo Mage::helper('core')->currency($tax, true, false); ?>
</td>
</tr>
<?php if ($discount):?>
<tr>
<td class="total-tile">
Desconto:
</td>
<td class="total-price">
<?php echo Mage::helper('core')->currency($discount, true, false); ?>
</td>
</tr>
<?php endif;?>
</table>
</div>
</div>
<div class="row">
<div class="col-xs-16">
<div class="grand-total">
<p class="text">Total:</p>
<p class="price"><?php echo Mage::helper('core')->currency($grandtotal, true, false);?></p>
</div>
</div>
</div>
<script type="text/javascript">
function calculaFreteAjax(cep) {
jQuery('.contem-shipping .shipping').html('<span class="remove-frete" style="display: block; margin: 0 auto; width: 20px;" id="login-please-wait"><img src="http://sites.xpd.com.br/cpaps/skin/frontend/xpd/default/images/opc-ajax-loader.gif" class="v-middle" alt=""/></span>');
var param = {'country_id': 'BR','estimate_postcode': cep};
console.log(param);
jQuery.ajax({
type: "GET",
url: '<?php echo Mage::getBaseUrl().'checkout/cart/estimateAjaxPost/'; ?>', //My Custom Controller
data: param,
success: function(response) {
response = jQuery.parseJSON(response);
if(response.shipping) {
jQuery('.contem-shipping').parent().html(response.shipping);
}
else {
alert('Falha ao calcular o frete. Tente novamente.');
}
}
});
jQuery('#co-shipping-method-form dd input.radio').click(function(){
//I will submit the shipping method selected
});
}
</script>

Answer 1

Denis... I have modify code please check
public function estimateAjaxPostAction()
{
$country = (string) $this->getRequest()->getParam('country_id');
$postcode = (string) $this->getRequest()->getParam('estimate_postcode');
$city = (string) $this->getRequest()->getParam('estimate_city');
$regionId = (string) $this->getRequest()->getParam('region_id');
$region = (string) $this->getRequest()->getParam('region');
$this->_getQuote()->getShippingAddress()
->setCountryId($country)
->setCity($city)
->setPostcode($postcode)
->setRegionId($regionId)
->setRegion($region)
->setCollectShippingRates(true);
$this->_getQuote()->save();
$response = array();
$response['shipping']=$this->eastmatesajax();
$this->getResponse()->setBody(Mage::helper('core')->jsonEncode($response));
}
protected function eastmatesajax()
{
$layout=$this->getLayout();
$layout->getMessagesBlock()->setMessages(Mage::getSingleton('checkout/session')->getMessages(true),Mage::getSingleton('catalog/session')->getMessages(true));
$block = $this->getLayout()->createBlock('checkout/cart_shipping')->setTemplate( 'checkout/cart/shipping.phtml');
return $block->toHtml();
}

Answer 2

Updated block issue solved using $this->_getQuote()->collectTotals(); before $this->_getQuote()->save();