Saving a Form

What about prepopulating a multi-page form from already saved entries in database?

I think I have @Carl's suggestion implemented. (Note - the method I described in this thread doesn't work completely - it's updated below. I would edit it in the original entry but that thread's been closed.)

This assumes users are registered and logged in prior to beginning to fill out a form.

Here's how to do it if anyone is interested.

1. In your form, go into each field's Advanced tab and click "Allow Field to be Populated Dynamically. Enter a parameter name - it can be anything, but *it should start with something unique*. This is to distinguish parameter names saved in the wp_usermeta table from those processed normally via Gravity Forms. In the examples below, I've begun my parameter names with "um_".
2. Change line 909 of forms_model.php to read:

   return apply_filters("gform_field_value_$name", apply_filters("gform_field_value", $value, $name));

   That's a hack of the core code. Ugh, I know. :( If anyone can think of a way around this please let me know!

3. Add the following to your theme's functions.php file. This will store the named parameters in the wp_usermeta table, and pre-populate them when a user returns to a form they've already filled out:
   

   // RETRIEVE PARAMETER_NAME FOR FIELDS AND ADD TO WP_USERMETA IF THEY START WITH UM_
   // For this to work you must name the parameters for each field by hand and make them start with 'um_'
   add_action('gform_post_submission', 'save_entry_values', 10, 2);
   function save_entry_values($entry, $form){
       $userid = $entry['created_by']; // retrieve user ID
   
       foreach($form['fields'] as $field) {
           $value = RGFormsModel::get_lead_field_value($entry, $field);
           // check that parameter name is prepended with 'um_'
           // (chosen to designate it as a parameter to be saved in wp_usermeta table)
           // note that if your prepend string is anything other than 3 characters long you will need to change the '3' in the next line
           if($value && substr($field['inputName'],0,3) === 'um_') {
               update_user_meta($userid, $field['inputName'], $value); // stores parameter_name values in wp_usermeta table
           }
       }
   }
   
   // RUN REVISED GFORM_FIELD_VALUE_YOUR_PARAMETER FILTER
   add_filter('gform_field_value', 'populate_user_meta', 10, 2);
   function populate_user_meta($value, $name) {
       global $user_ID;
       $field_user_meta = get_the_author_meta($name, $user_ID);
       // check if parameter name begins with 'um_' and if so, pre-populate it from the_author_meta
       if(substr ($name,0,3) === 'um_' ) {
           return $field_user_meta;
       // otherwise, pre-populate as normal (either via querystring, shortcode or other)
       } else {
           return $value;
       }
   }

4. Now we add the "Save and return later" and "Submit" buttons. Note that in the all of the rest of these functions, I'm specifying a specific form on my site - the form with id=8. You'll want to change that in both the functions and filters below to apply to your specific form.
   

   // ADD A SAVE BUTTON ON TARGETED FORM
   add_filter("gform_submit_button", "form_submit_button", 10, 2);
   function form_submit_button($button, $form){
       if($form["id"] == "8") {
           $save = "<input class='submit' type='submit' name='gform_save_button_".$form['id']."' id='gform_save_button_".$form['id']."' value='Save and Return Later' />";
           $submit = "<input class='submit' type='submit' id='gform_submit_button_".$form['id']."' value='Submit Form for Review &raquo;' />";
           return "$save &nbsp;&nbsp; $submit";
       } else {
           return "<input class='submit' type='submit' id='gform_submit_button_".$form['id']."' value='Submit' />";
       }
   }

5. If users aren't submitting the form, you won't want to run validation yet, you'll want a different confirmation message, and you may not want email confirmations to be sent out. If all that's true, add these to your functions.php file. Remember to change the form ID #.
   

   // DO NOT RUN VALIDATION IF USER IS SAVING FORM
   add_filter('gform_validation_8', 'custom_validation');
   function custom_validation($validation_result) {
       if($_POST['gform_save_button_'.$validation_result["form"]["id"]]) {
           $validation_result["is_valid"] = true;
       }
       return $validation_result;
   }
   // OUTPUT DIFFERENT CONFIRMATION MESSAGE WHEN SAVING
   add_filter("gform_confirmation_8", "custom_confirmation", 10, 4);
   function custom_confirmation($confirmation, $form, $lead){
       if($_POST['gform_save_button_'.$form["id"]]){
           // Note the next line includes a shortcode which will output the form underneath the confirmation message.
           // If the original form or the shortcode below has ajax enabled, strange things will happen
           $confirmation = "<div id='gforms_confirmation_message'>Thanks! Your entries have been saved. Return to this page at any time to continue filling out the form.</div> [gravityform id=8 name=Questionnaire title=false description=false]";
           // use the following line instead if you want a saved form to redirect somewhere
           //$confirmation = array("redirect" =>"/sitename/wp/login?action=profile");
       }
       return $confirmation;
   }
   
   // DO NOT SEND CONFIRMATION EMAIL IS USER IS SAVING FORM
   add_filter("gform_disable_admin_notification_8", "disable_notification", 10, 3);
   function disable_notification($is_disabled, $form, $entry){
       if($_POST['gform_save_button_'.$form["id"]]) {
           return true;
       } else {
           return false;
       }
   }

Hope this helps someone!

Michelle