If things are pretty much guaranteed to happen in a few second window
(you may want to ask them of average response time), you might want to
make something like the pseudocode below:
PendingTransaction.cfc
{
_uniqueID= createUUID();
_data: struct
_response : ""; // simplevalue
function init(struct d){ this._data=d;}
function getData(){ return _data}
function getUniqueID(){ return _uniqueID; }
function setResponse(struct data){ _response=data;}
function isComplete( return not isSimplevalue(_response);}
function getResponse(){ return _response;}
}
PendingTransactionManager.cfc
{
_allTxns=structnew();
function createTransaction(Struct data){
t=new PendingTransaction().init(data);
_allTxns[t.getUniqueID()]=t;
return t;
}
function updateTransaction(id, struct data){
_allTxns[id].setResponse(data);
// do some DB operation
}
function processTransaction(PendingTransaction t){
// add data to DB
// do payment stuff
while(NOT t.iscomplete()){
sleep (100 milliseconds);
}
return t;
}
}
----
Then in your code you set up Application.TxnManager=new
PendingTransactionManager();
Success.cfm:
application.txnManager.updateTransaction(form.someID,form);
Error.cfm: application.txnManager.updateTransaction(form.someID,form);
Whatever.cfm:
application.txnManager.updateTransaction(form.someID,form);
And in your act_pay.cfm you do this...
<cfscript>
Txn=Application.TxnManager.createTransaction(form);
// this blocks until you get the response
Application.TxnManager.processTransaction(txn);
Use info from txn.getResponse()
</cfscript>
-----Original Message-----
From: Michael Traher [mailto:[EMAIL PROTECTED]
Sent: Thursday, December 28, 2006 11:30 AM
To: CF-Talk
Subject: Re: how do I reunite 2 separate requests
Thanks Russ,
Yes I guess getting the callback page to write to the database, and then
the original request read and wait for that database value is a way to
solve this. And yes we do pass a unique transaction reference to
identify the value - its just a bit clunky compared to it all being in
one request which is how our other PSP, 'datacash' (who I highly
recommend BTW) handle things.
On 12/28/06, Snake <[EMAIL PROTECTED]> wrote:
>
> This is a pretty standard callback method, most systems will use it.
> When you sent the request, you should have the option of sending a
> custom value, such as your own generated transaction or invoiceID. If
> not then you could always send the CFID and CFTOKEN.
> This is what you need to use on the callback page to process the
> returned data and validate the transaction.
>
> So if your orginal request page needs to wait for approval and then do
> something, you could simply check the database for the data saved by
> your callback page and then you will know if it failed or was
successful.
>
> Russ
>
>
> -----Original Message-----
> From: Michael Traher [mailto:[EMAIL PROTECTED]
> Sent: 28 December 2006 15:45
> To: CF-Talk
> Subject: how do I reunite 2 separate requests
>
> Need a bit help - my poor ol' brain is struggling with how best to
> impelment this...
>
> I am just starting to integrate this payment service provider into our
> system to handle credit card payments for our customers in the Asia
> Pacific region.
>
> I already use a PSP here in the UK and I have a cfc which nicely
> implements the process - I feed in credit card, expiry date, amount
> currency etc etc and after an cfhttp call the cfhttp.filecontent
> contains the response as an XML packet... nice.
>
> For paydollar the implementation is slight different - I still do an
> cfhttp call but then I have to declare a URL to 'receive the results
> in realtime'
> and in addition declare 3 separate pages to display in case of error,
> decline or success. So paydollar in effect spawn a separate request to
> pass me the results and all I get back in the cfhttp.filecontent is
> one of the three pages I nominated.
>
> So I know broadly if it has been authorised, declined or some error -
> but the details are in another request!
>
> Any ideas on the best way to tie the requests together again? Can the
> results page know about the correct CF session scope?
>
> The nominated 'results URL' is not dynamic with each request by the
> way - just declared to them once. When it is run however it has access
> to the transactio details in the form scope.
>
> I really want to abstract the whole credit card payment so that it
> will pass to the appropriate PSP behind the scenes and pass back a
> standard response and codes.
>
> confused of UK
>
> --
> Mike T
> Blog http://www.socialpoints.com/
>
>
>
>
>
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