You have a form in which the user fills out and clicks a “submit” button that validates their input, does some processing and output’s some results. The problem being the application needs to cater for page refreshes, back buttons and the case of the page being submitted more than once (latency/slow internet connection).

The Solution:

Possible solutions can be (this assumes not using Ajax as a solution), once the user clicks the submit button the server validates the user’s input and has processed the information. Store a unique id in session and redirect to a “complete” page. If the user clicks the back button and resubmits the page, you can build logic to check if a unique id exists in session and if it does, redirect to the complete page without having to re-process the information.

If the user is on the complete page and refreshes the page, because its on a page which has used a GET, there is no processing done and hence no duplication of data.

References:

http://en.wikipedia.org/wiki/Post/Redirect/Get

http://stackoverflow.com/questions/665399/how-do-i-stop-the-back-and-refresh-buttons-from-resubmitting-my-form

SET FOREIGN_KEY_CHECKS=0;
TRUNCATE `sales_order`;
TRUNCATE `sales_order_tax`;
TRUNCATE `sales_order_datetime`;
TRUNCATE `sales_order_decimal`;
TRUNCATE `sales_order_entity`;
TRUNCATE `sales_order_entity_datetime`;
TRUNCATE `sales_order_entity_decimal`;
TRUNCATE `sales_order_entity_int`;
TRUNCATE `sales_order_entity_text`;
TRUNCATE `sales_order_entity_varchar`;
TRUNCATE `sales_order_int`;
TRUNCATE `sales_order_text`;
TRUNCATE `sales_order_varchar`;
TRUNCATE `sales_flat_quote`;
TRUNCATE `sales_flat_quote_address`;
TRUNCATE `sales_flat_quote_address_item`;
TRUNCATE `sales_flat_quote_item`;
TRUNCATE `sales_flat_quote_item_option`;
TRUNCATE `sales_flat_order_item`;
TRUNCATE `sendfriend_log`;
TRUNCATE `tag`;
TRUNCATE `tag_relation`;
TRUNCATE `tag_summary`;
TRUNCATE `wishlist`;
TRUNCATE `log_quote`;
TRUNCATE `report_event`;
ALTER TABLE `sales_order` AUTO_INCREMENT=1;
ALTER TABLE `sales_order_tax` AUTO_INCREMENT=1;
ALTER TABLE `sales_order_datetime` AUTO_INCREMENT=1;
ALTER TABLE `sales_order_decimal` AUTO_INCREMENT=1;
ALTER TABLE `sales_order_entity` AUTO_INCREMENT=1;
ALTER TABLE `sales_order_entity_datetime` AUTO_INCREMENT=1;
ALTER TABLE `sales_order_entity_decimal` AUTO_INCREMENT=1;
ALTER TABLE `sales_order_entity_int` AUTO_INCREMENT=1;
ALTER TABLE `sales_order_entity_text` AUTO_INCREMENT=1;
ALTER TABLE `sales_order_entity_varchar` AUTO_INCREMENT=1;
ALTER TABLE `sales_order_int` AUTO_INCREMENT=1;
ALTER TABLE `sales_order_text` AUTO_INCREMENT=1;
ALTER TABLE `sales_order_varchar` AUTO_INCREMENT=1;
ALTER TABLE `sales_flat_quote` AUTO_INCREMENT=1;
ALTER TABLE `sales_flat_quote_address` AUTO_INCREMENT=1;
ALTER TABLE `sales_flat_quote_address_item` AUTO_INCREMENT=1;
ALTER TABLE `sales_flat_quote_item` AUTO_INCREMENT=1;
ALTER TABLE `sales_flat_quote_item_option` AUTO_INCREMENT=1;
ALTER TABLE `sales_flat_order_item` AUTO_INCREMENT=1;
ALTER TABLE `sendfriend_log` AUTO_INCREMENT=1;
ALTER TABLE `tag` AUTO_INCREMENT=1;
ALTER TABLE `tag_relation` AUTO_INCREMENT=1;
ALTER TABLE `tag_summary` AUTO_INCREMENT=1;
ALTER TABLE `wishlist` AUTO_INCREMENT=1;
ALTER TABLE `log_quote` AUTO_INCREMENT=1;
ALTER TABLE `report_event` AUTO_INCREMENT=1;
TRUNCATE `customer_address_entity`;
TRUNCATE `customer_address_entity_datetime`;
TRUNCATE `customer_address_entity_decimal`;
TRUNCATE `customer_address_entity_int`;
TRUNCATE `customer_address_entity_text`;
TRUNCATE `customer_address_entity_varchar`;
TRUNCATE `customer_entity`;
TRUNCATE `customer_entity_datetime`;
TRUNCATE `customer_entity_decimal`;
TRUNCATE `customer_entity_int`;
TRUNCATE `customer_entity_text`;
TRUNCATE `customer_entity_varchar`;
TRUNCATE `log_customer`;
TRUNCATE `log_visitor`;
TRUNCATE `log_visitor_info`;
ALTER TABLE `customer_address_entity` AUTO_INCREMENT=1;
ALTER TABLE `customer_address_entity_datetime` AUTO_INCREMENT=1;
ALTER TABLE `customer_address_entity_decimal` AUTO_INCREMENT=1;
ALTER TABLE `customer_address_entity_int` AUTO_INCREMENT=1;
ALTER TABLE `customer_address_entity_text` AUTO_INCREMENT=1;
ALTER TABLE `customer_address_entity_varchar` AUTO_INCREMENT=1;
ALTER TABLE `customer_entity` AUTO_INCREMENT=1;
ALTER TABLE `customer_entity_datetime` AUTO_INCREMENT=1;
ALTER TABLE `customer_entity_decimal` AUTO_INCREMENT=1;
ALTER TABLE `customer_entity_int` AUTO_INCREMENT=1;
ALTER TABLE `customer_entity_text` AUTO_INCREMENT=1;
ALTER TABLE `customer_entity_varchar` AUTO_INCREMENT=1;
ALTER TABLE `log_customer` AUTO_INCREMENT=1;
ALTER TABLE `log_visitor` AUTO_INCREMENT=1;
ALTER TABLE `log_visitor_info` AUTO_INCREMENT=1;
TRUNCATE `eav_entity_store`;
ALTER TABLE  `eav_entity_store` AUTO_INCREMENT=1;
SET FOREIGN_KEY_CHECKS=1;

“var _gaq is undefined”

In the ga.php file located under /app/code/core/Mage/GoogleAnalytics/Block add the following line of code before _gaq.push javascript

“var _gaq = _gaq || [];” – about line 179

This will remove the error.   I still need to test to see if visitor site numbers have been affected.

References:

http://www.magentocommerce.com/boards/viewthread/68885/

Warning: Invalid argument suppplied for foreach() line 51.

Fix is available from here (this is only a fix, it doesn’t solve the problem – The paging is removed).

References:

http://www.sonassi.com/knowledge-base/magento-1-4-install-errors/

References:

http://nik.chankov.net/2009/10/28/adding-notification-when-new-order-arrives-magento/

The problem I had was trying to send emails in Magento using GMAIL (Google Apps) using the code from this forum:

http://www.magentocommerce.com/boards/viewthread/1073/

The work around is that I setup a email account in Bluehost the same as the email I use in Google Apps.  I then modified the code in Magento to send out using bluehost’s SMTP servers:

For example:

Outgoing Mail Server: (SSL) boxnumber.bluehost.com (server requires authentication)
Supported Incoming Mail Protocols:

• POP3: port 110
• POP3S (SSL/TLS): port 995
• IMAP: port 143
• IMAPS (SSL/TLS): port 993

Supported Outgoing Mail Protocols:

• SMTP: port 26
• SMTPS (SSL/TLS): port 465

And it works, it sends the email out to the customers with the right email address sent from bluehost’s local SMTP servers, so when customers reply to the email address it will arrive in my google apps mail box.

References:

http://drupal.org/node/458044

By using the following code, you can set the offset from the global joomla configuration file

<?php
$thisJApp = &JFactory::getApplication();
$thisJDate = JFactory::getDate();
$thisJDate ->setOffset($thisJApp ->getCfg(‘offset’));
echo $thisJDate->toFormat(“%A %d %b %Y”);
?>

If you want to set the date from a logged in user you can try:

<%

$JUser =& JFactory::getUser();
$JDate = JFactory::getDate();
echo $JDate->toFormat().’<br>’;
echo ‘offset=’ . $JDate->getOffset() . ‘<br>’;
$JDate->setOffset($JUser->getParam(‘timezone’));

%>

References:

http://www.cyberciti.biz/faq/how-do-i-block-an-ip-on-my-linux-server/

Steps to resolve:

I enabled the cUrl extension in php.ini (running on a IIS platform)

Changed the code around line 6536:

curl_setopt($fp, CURLOPT_PROXY, $ip);
curl_setopt($fp, CURLOPT_PROXYPORT, $port);
curl_setopt($fp, CURLOPT_PROXYUSERPWD, $login . ‘:’ . $passwd);

where $ip is the proxy IP Address, $port is the port and $login:$password is the proxy authentication.

After this, I can load in external RSS feeds! YAY

References:

http://www.phpdig.net/ref/rn11re189.html

jQuery(‘textarea[maxlength]‘).keyup(function() {
var max = parseInt(jQuery(this).attr(‘maxlength’));
if (jQuery(this).val().length > max) {
jQuery(this).val(jQuery(this).val().substr(0, jQuery(this).attr(‘maxlength’)));
}
if (jQuery(this).parent().find(‘.charsRemaining’).length > 0) jQuery(this).parent().find(‘.charsRemaining’).html(‘You have ‘ + (max – jQuery(this).val().length) + ‘ characters remaining’);
else jQuery(this).parent().append(‘<div class=”charsRemaining”>You have ‘ + (max – jQuery(this).val().length) + ‘ characters remaining</div>’);

});