[FX.php List] Problem with double submissions

[Gjermund Gusland Thorsen]

You might have to make a couple of random letters at the end to make
sure nobody starts filling in a form at the same time.

2010/9/28 Gjermund Gusland Thorsen <ggt667 at gmail.com>:
> Heh, I would use a string for every form <<CCYYMMDDHHIISS>> made at
> the same time as the form,
> then I would store that value in a unique field in FileMaker, then
> when ['errorCode'] == 504 shows up...
>
> tada! You could trap the error in php.
>
> Then they can submit as many times as they want, and you only keep the
> first one, or you can also choose to store updates if need be.
>
> -Joel
>
>
>
> ooops, I mean ggt
> :-p
>
> 2010/9/27 Joel Shapiro <jsfmp at earthlink.net>:
>> http://ajaxload.info/
>>
>> ggt
>>
>>
>>
>> oops, I mean -Joel
>> ;-)
>>
>>
>>
>> On Sep 27, 2010, at 9:08 AM, Dale Bengston wrote:
>>
>>> This is my method as well. But instead of just disabling the button, I
>>> replace it with a progress indicator so that the user knows something is
>>> transpiring.
>>>
>>> I'm using Scriptaculous, but the principles are the same. It could be done
>>> with a plain-old JavaScript function as well.
>>>
>>> Dale
>>>
>>> On Sep 27, 2010, at 10:31 AM, Andy Gaunt wrote:
>>>
>>>> Hey Bob,
>>>>
>>>> Why not disable the button instead?
>>>>
>>>> You can do this with jQuery if you are using it or just adding an onClick
>>>> to the element
>>>>
>>>> onclick="this.disabled=true;"
>>>>
>>>> jQuery might look like:
>>>>
>>>>
>>>> $('#yourform').submit(function(){
>>>>    $('input[type=submit]', this).attr('disabled', 'disabled');
>>>> });
>>>>
>>>>
>>>> You could also change the value of the submit button to "Processing..."
>>>> or something similar as well to give the end user some feedback that the
>>>> page is working
>>>>
>>>>
>>>> HTH
>>>>
>>>>
>>>> Andy Gaunt
>>>> T: 321-206-3658
>>>> andy at fmpug.com
>>>>
>>>> http://www.fmpug.com
>>>> FMPug.com: A Developer's best Friend!
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>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> On Sep 27, 2010, at 11:09 AM, Bob Patin wrote:
>>>>
>>>>> I've got a problem with a client's web server that sometimes slows down
>>>>> so much that customers are double-submitting their orders, causing their
>>>>> card to get hit twice.
>>>>>
>>>>> Here's what *should* happen on a well-behaved web server:
>>>>>
>>>>> Page submits, Authorize.net runs the charge, order gets updated in
>>>>> FileMaker with the transactionID.
>>>>> Customer goes to the confirmation page, where they see a printable
>>>>> invoice
>>>>> Session variable gets destroyed
>>>>>
>>>>> BUT HERE'S WHAT HAPPENS:
>>>>> The web server, for which I have no control and no faith, seems to time
>>>>> out sometimes on this page, where auth.net processes the card.
>>>>>
>>>>> I've been trying to write a Javascript function to prevent double
>>>>> submissions; here's what I'm trying:
>>>>>
>>>>> On my button, which is an image, I have this:
>>>>>
>>>>> <input type="image" name="mySubmit" src="images/process_cc.jpg"
>>>>> alt="ticket_cc_process.php" width="180" height="32" onclick="javascript:
>>>>> return check_submit();">
>>>>>
>>>>> Then, here's my JS function:
>>>>>
>>>>> <script language="Javascript">
>>>>> function check_submit (){
>>>>>        if (document.form1.form_submitted.value == 1){
>>>>>                alert("Don't submit twice. Please wait.");
>>>>>                return false;
>>>>>        }else{
>>>>>                document.form1.form_submitted.value = 1;
>>>>>                return true;
>>>>>        }
>>>>> }
>>>>>
>>>>> </script>
>>>>>
>>>>> So my problem is that I can't get the form to time out, giving me enough
>>>>> time to see whether this actually works--customers seem to be able to, but
>>>>> not me.
>>>>>
>>>>> QUESTION:
>>>>> Is there a better way to do this, better code, better method?
>>>>>
>>>>> Thanks,
>>>>>
>>>>>
>>>>> Bob Patin
>>>>> Longterm Solutions
>>>>> bob at longtermsolutions.com
>>>>> 615-333-6858
>>>>> http://www.longtermsolutions.com
>>>>> iChat: bobpatin
>>>>> FileMaker 9, 10 & 11 Certified Developer
>>>>> Member of FileMaker Business Alliance and FileMaker TechNet
>>>>> --
>>>>> Expert FileMaker Consulting
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