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Update a custom field based on a form response

  1. I'm including a form within the template for an existing custom post type on a non-profit site. The custom post type will have a custom field for sponsors with a value of 0-5, and I want to both get that value for display in the form, as well as update the field when the form is submitted.

    For instance, a visitor to the site might see that there is 1 sponsor slot already taken, and they want to offer two more. I'd like the form to:

    1) Query the field to properly display how many sponsorships are available. (In this case, only 4, so it would display a drop down with 1-4.)
    2) Assuming the user selects the number 2, for two sponsorships, the form would the update the custom field to add 2 to it, so that it would now display that 3 sponsorships have been taken for the next user.
    3) To possibly confuse the issue, the number of sponsorships should be taken from a product quantity as it will also be processing their payment.

    Is this doable? And if so, any pointers on the proper code?

    Posted 9 years ago on Wednesday September 26, 2012 | Permalink
  2. I think I've worked out a solution for part what is described here, but still haven't resolved one key feature. When I form is submitted, I'd also like it to update a custom field for the current post that the form is displayed within. Is this doable?

    Posted 9 years ago on Friday September 28, 2012 | Permalink
  3. If you want to update an existing post (the post where the form is embedded) you can use the gform_after_submission hook and call update_post_meta to add or update the custom field value.

    http://www.gravityhelp.com/documentation/page/Gform_after_submission
    http://codex.wordpress.org/Function_Reference/update_post_meta

    Posted 9 years ago on Monday October 1, 2012 | Permalink
  4. Thanks Chris

    Posted 9 years ago on Monday October 1, 2012 | Permalink
  5. Did you get it working or did you need additional assistance?

    Posted 9 years ago on Monday October 1, 2012 | Permalink
  6. Not working quite yet. Here's what I have:

    <?php add_action("gform_after_submission_9", "update_sponsor_count", 10, 2);
    			function update_sponsor_count($entry, $form){
    			    //getting post and entry data
    			    $post = get_post($entry["post_id"]);
    			    $sponsor_level = get_post($entry["3"]);
    			    //updating sponsor count
    			    if ($sponsor_level == 'sponsor1') { $new_count = $sponsor_count + 1;}
    			    update_post_meta($post, 'sponsors', $new_count);
    			} ?>

    I'm trying to update the 'sponsor' post meta. The $sponsor_count is previously defined in the post loop as the value of 'sponsor' prior to form submission. Not showing any php errors in the error log.

    Posted 9 years ago on Monday October 1, 2012 | Permalink
  7. Can you echo the variables after you set each one to see if they are all populated as expected?

    However, I think the problem is in line 8. $post is an array. You need the post ID for update_post_meta. Something like this instead:

    [php]
    update_post_meta($post->ID, 'sponsors', $new_count);
    Posted 9 years ago on Monday October 1, 2012 | Permalink
  8. Thanks. I've almost got it worked out, except for one last issue with an Entry Object. Field 3 is a Product Drop-Down, so using $sponsor_level = $entry["3"] is returning both the Value and the Price with a pipe between them. I've tried "3,1" but that doesn't work. Is it possible to return only the value field from that dropdown?

    Posted 9 years ago on Monday October 1, 2012 | Permalink
  9. I think you are going to have to split that string on the pipe and save the first part, the value, if that's what you want. If you are doing this:

    [php]
    $sponsor_level = $entry["3"] ;

    try this instead:

    [php]
    $sponsor_level_array = preg_split("/\|/", $entry['3']);
    $sponsor_level = $sponsor_level_array[0];

    That will return the first part of the entry, before the pipe, the value.

    There is probably a shorter way to do that but I can't put my finger on it right now.

    Posted 9 years ago on Tuesday October 2, 2012 | Permalink