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Invoice Number Appended to Product Field Label - PayPal

  1. I have a form (form ID 4) where I used a "User Defined Price" Product field (field ID 4), to collect the amount that the user is going to pay. I also have a Single Line Text field (field ID 10) that the user inputs their invoice number (invoice was mailed out to them).

    Since PayPal has nothing available to send over a reference or invoice number, I want to append 'Inv #' and the input from field 10, to the label of field 4, and send that to PayPal.

    I did some research, and know what I need to use gform_pre_submission_filter, but I don't know where to start to make this work. (I saw this, but it is not what I need because it always updates 'invoice 123', and I can't make it work).

    How is this done (hi David Smith lol)?
    Help is greatly appreciated!!

    Posted 10 years ago on Wednesday June 20, 2012 | Permalink
  2. There is actually a way to send an invoice # to paypal. I used the following code:

    //Gravity Forms PayPal Invoice Edits
    add_filter("gform_paypal_invoice", "change_invoice", 10, 3);
    function change_invoice($invoice_id, $form, $entry){
        return $entry["10"];//field ID you want to be the invoice number
    Posted 9 years ago on Sunday October 7, 2012 | Permalink
  3. btrilli,

    That's awesome, I will try it out.

    Thanks for the help!

    Posted 9 years ago on Sunday October 7, 2012 | Permalink
  4. The hook is documented here for anyone curious:

    Posted 9 years ago on Monday October 8, 2012 | Permalink