Gravity Wiz // Gravity Forms // Map Submitted Field Values to Another Field

gw-gravity-forms-map-fields-to-field.php

<?php
/**
 * Gravity Wiz // Gravity Forms // Map Submitted Field Values to Another Field
 *
 * Usage
 *
 * 1 - Enable "Allow field to be populated dynamically" option on field which should be populated.
 * 2 - In the "Parameter Name" input, enter the merge tag (or merge tags) of the field whose value whould be populated into this field.
 *
 * Basic Fields
 *
 * To map a single input field (and most other non-multi-choice fields) enter: {Field Label:1}. It is useful to note that
 * you do not actually need the field label portion of any merge tag. {:1} would work as well. Change the "1" to the ID of your field.
 *
 * Multi-input Fields (i.e. Name, Address, etc)
 *
 * To map the first and last name of a Name field to a single field, follow the steps above and enter {First Name:1.3} {Last Name:1.6}.
 * In this example it is assumed that the name field ID is "1". The input IDs for the first and last name of this field will always be "3" and "6".
 *
 * # Uses
 *
 *  - use merge tags as post tags
 *  - aggregate list of checked checkboxes
 *  - map multiple conditional fields to a single field so you can refer to the single field for the selected value
 *
 * @version	  1.1
 * @author    David Smith <[email protected]>
 * @license   GPL-2.0+
 * @link      http://gravitywiz.com/...
 * @copyright 2014 Gravity Wiz
 */
class GWMapFieldToField {

    public $lead = null;

    function __construct( ) {

        add_filter( 'gform_pre_validation', array( $this, 'map_field_to_field' ), 11 );

    }

    function map_field_to_field( $form ) {

        foreach( $form['fields'] as $field ) {

            if( is_array( $field['inputs'] ) ) {
                $inputs = $field['inputs'];
            } else {
                $inputs = array(
                    array(
                    'id' => $field['id'],
                    'name' => $field['inputName']
                    )
                );
            }

            foreach( $inputs as $input ) {

                $value = rgar( $input, 'name' );
                if( ! $value )
                    continue;

                $post_key = 'input_' . str_replace( '.', '_', $input['id'] );
                $current_value = rgpost( $post_key );

                preg_match_all( '/{[^{]*?:(\d+(\.\d+)?)(:(.*?))?}/mi', $input['name'], $matches, PREG_SET_ORDER );

                // if there is no merge tag in inputName - OR - if there is already a value populated for this field, don't overwrite
                if( empty( $matches ) )
                    continue;

                $entry = $this->get_lead( $form );

                foreach( $matches as $match ) {

                    list( $tag, $field_id, $input_id, $filters, $filter ) = array_pad( $match, 5, 0 );

                    $force = $filter === 'force';
                    $tag_field = RGFormsModel::get_field( $form, $field_id );

                    // only process replacement if there is no value OR if force filter is provided
                    $process_replacement = ! $current_value || $force;

                    if( $process_replacement && ! RGFormsModel::is_field_hidden( $form, $tag_field, array() ) ) {

                        $field_value = GFCommon::replace_variables( $tag, $form, $entry );
                        if( is_array( $field_value ) ) {
	                        $field_value = implode( ',', array_filter( $field_value ) );
                        }

                    } else {

                        $field_value = '';

                    }

                    $value = trim( str_replace( $match[0], $field_value, $value ) );

                }

                if( $value ) {
                    $_POST[$post_key] = $value;
                }

            }

        }

        return $form;
    }

    function get_lead( $form ) {

        if( ! $this->lead )
            $this->lead = GFFormsModel::create_lead( $form );

        return $this->lead;
    }

}

new GWMapFieldToField();

Any update to allow this to work on form re-submission? Having same issue as jhonatang1988 - user validation fails, user fixes the issue and re-submits - script does not update...

Thanks David! This is a very useful script that maps fields as described. Unfortunately my understanding of PHP and Gravity Forms isn't sufficient to allow me to manipulate it to deliver exactly what I'm looking for. Perhaps you can help?

EDIT I discovered the answer and have submitted it at end of this comment

The field that I'm mapping is a Drop Down populated by a CPT. When an option is chosen and the form submitted, GF displays the post ID for the primary field but the mapped field displays the post_name. For the purpose which it's being used (specifying the parent post in a WP-Types CPT relationship), I need to have the mapped field displaying the ID rather than the post_name. What changes do I need to make so that the script functions in this manner?

ANSWER It turns out that the functionality required to achieve the above can be found in the sas786 fork of this script https://gist.github.com/saas786/82db9587e5b9644cbcf8

I'm trying to use this to store the Cardholder Name of a Credit Card field to a hidden admin-only field. The field is {Cardholder Name:19.5}, but nothing is returned. I tried using saas786's fork and was able to get the field to populate, but it is now storing all of the credit card sub-fields including the card number, Array (sub-field array of Card Month and Card Year select fields 19.2[]), card security code, and cardholder name. How can I modify this to only store the last item rather than the array for the entire field, please?

BUG: In multi step forms, if for some reason yo go back and forth the data is not passed.

2 questions:

1. Does this script require Gravity Wiz?
2. How do I install this?

I tried this on a dynamically populated drop down. Code here --> https://www.gravityhelp.com/documentation/article/dynamically-populating-drop-down-fields/

When using this for a dynamically populated drop down the label is stored - not the value.

Any help ?

Hi,

where i insert the snippet?
in functions.php
Thanks

Hi,

In multi page form, if user selects one wrong field and clicks on next page and comes back, then selects the correct field, then dynamic population shows the first value(i.e the wrong field). How to rectify?

@bkellaway (or others who have the same question)

When using this for a dynamically populated drop down the label is stored - not the value.

Answer lies in the docs for merge tags here. Just use the following syntax:
{Field Name:Field ID:value}
For example:
{Choice:7:value}

Hi, if I update the source field on Admin side the target field is not updated accordingly. How can I maintain the values in sync when I update from Admin area? Many thanks

@spivurno I cannot get this to work. I've copied your code to the end of my functions.php file and placed {:7.1} into the field 96.1 parameter name (allowed to be populated dynamically) which I want to populate with the content entered into field 7.1. When testing the form and I enter content into field 7.1, nothing appears after tabbing into field 96.1. Am I overlooking something? This is a simple text (address) field. When I look in the developers console (Firefox), I can see an event triggering with both a change and keyup function, each showing: function(e) {
gf_raw_input_change(e, this)
}

@madriverweb The value will only be populated on submission. If you need the value to be populated live, on change/keyup, check out Gravity Forms Copy Cat.

I am looking to add some fixed prefix and followed by a substring of another field.
Is this possible?
If Yes, how?

Thanks in advance