Paypal Listener ipn always on invalid

Hi,

my setup On IPN

On Verified:
1- custom code to insert the paypal variables in the db - result OK
2- mail with custom template i put the same paypal variable- result OK
3- custom code with simple html text with message OK VERIFIED - result d'ont show

On Invalid - custom code with simple html text with message - INVALID , please contact admin
On Error - custom code with simple html text with message - ERROR , please contact admin.



Question is:

why the response paypal ipn always returns page ON Invalid

thanks a lot
Cornelio

Hi Cornelio,

How do you receive the verified mail ? the ipn event should not be accesses by the browser, its a page which PayPal "only" should access, you should not set the "return url" to that page either.

Best regards,
Max

HI Max,
the problem that makes me crazy is:

-if I enter the code below on PayPalListener VERIFIED with Custom Code

<?php
$id_foto = $_POST['item_name'];
$txn_id = $_POST['txn_id'];
	
$db = JFactory::getDbo();
$sql = "INSERT INTO `#__cf_payments` (`item_number`,`txn_id`) VALUES ( '" .$id_foto. "','" .$txn_id. "') ";
$db->setQuery($sql);
$db->execute();
?>

the data correctly is saved to the DB;
..and I enter the code below always on PayPalListener VERIFIED on Email custom template

<?php
echo'<div>$_POST: '.print_r($_POST, true).'</div>';
  
?>

i receive correctly the email with all the paypal variables.


the question is:
why the Listener is positioned to INVALID?

I send you my account via PM?

Thanks a lot
Best Regards
Cornelio

Hi Cornelio,

If these verified actions are processed then how do you know that the "invalid" event is processed ?

Best regards,
Max

Hi Max,
because if I put this

<?php
echo "<font color='red'>
On verified PayPal Listener: VERIFIED.
<br/><br/></font>";
?>

in custom code is not shown while the same code is shown on INVALID

and I put the same code on custom template email to INVALID but the email arrives empty, without the variable Paypal

Regards
Cornelio

Hi Cornelio,

This means that you access the ipn event address using the browser ?

If yes then this is wrong and should not be done, the ipn event should be accesses by PayPal only.

Best regards,
Max

Hi Max,

This means That You access the event ipn address using the browser?

This is the page after the redirect from paypal

http://www.ieraora.com/demophoto/index.php?option=com_chronoforms5&chronoform=shop_simple_cart&event=ipn

url set to the same on site paypal ipn

Best Regards
Cornelio

Hi Max,

OK now I understand the note:

You should NOT add this notify url in the "return url" of the "PayPal Redirect" action, the IPN event is setup to run in the background by a call from PayPal, not using the user's browser.

the problem is that if I remove the Return URL than on the Paypal payment page does not appear the button to return to the store.

Best Regards
Cornelio

Hi Cornelio,

Just add any other url, like a url for an article or create a new form event and add the url to it.

If you download the new Chronoforms v6 and install it (it will install as a new extension) then you can test the demo PayPal form (click new) and check how the PayPal action is configured with multiple events.

Best regards,
Max

Great Max!
thank you very much for your patience.

certainly I try the new ChronoForms v6

Best Regards
Cornelio

Hi Max,

PayPal Listener now works fine.


Now in Return URL Redirect PayPal I put a redirect page where I need to call some paypal variables like this

$ txn_id = $ _POST ['txn_id'];

how to do that?

Thank you very much
Cornelio

Hi Cornelio,

The return url now points to a form event or an article ? if its a form event then you can use {txn_id} if you are using v5, and {data:txn_id} if you are using v6.

Best regards,
Max

Hi Max,

yes,

The return url now points to a form event

but your suggestion does not work


callback variable I have to use as the query below

$query->where($db->quoteName('txn_id')." = ".$db->quote($txn_id));

Best Regards
Cornelio

Hi Cornelio,

you mean in PHP ? then you should use

$form->data["txn_id"]

Best regards,
Max

Thanks Max,

but it is not what is needed.

screen1 = setting of Paypal Redirect

scrren2 = the page where I want to retrieve this variable.

$ txn_id = $ _POST ['txn_id']; 

It does not work if outside IPN?

Best Regards
Cornelio

Hi cornelio,

In the custom code inside "download_after_pay", please use this code:

<?php
pr($form->data);

this will list all the data returned by PayPal on the page after purchase.

Best regards,
Max

Hi Max,

the result is as follows

Array
(
    [option] => com_chronoforms5
    [chronoform] => shop_simple_cart
    [event] => download_after_pay
)

Best regards
Cornelio

Hi Cornelio,

You get this result after you complete a purchase and get redirected by PayPal back to your website ?

Best regards,
Max

Hi Max,

Yes just like this.

Best Regards
Cornelio

Hi Cornelio,

Ok, I didn't expect this, but what do you need to do with the txn_id number ? if you want to store it or send it by email then maybe you can use it in the ipn event instead.

Best regards,
Max

Hi Max,
I said it before in this post. I have to use this variable

$ txn_id

and then reinsert in a query->where

if you want to store it or send it by email then maybe you can use it in the ipn event instead.

email sending and store in the db, if you look at the screen2, are already done.

Best Regards
Cornelio

Hi Max,

I could do this On IPN event but
as I understand it in IPN event we can not stand HTML because the listener works in the background, is it?

Best Regards
Cornelio

Hi Max,

OK. Now the understanding of how the Listener works is complete.

I solved changing approach.

ie inserting before the Email action and add code like this

but I have so much to your help. Thank you so much Max

Best Regards
Cornelio