Gravity Wiz // Gravity Forms User Registration // One Way Mapping

gw-gravity-forms-user-registration-one-way-mapping.php

<?php
/**
 * Gravity Wiz // Gravity Forms User Registration // One Way Mapping
 *
 * By default, fields mapped to a user meta key on an User Registration Update Feed will be populated with the current
 * user meta value. This snippet allows you to specify form fields that should update the user meta but not be populated
 * with the existing value when the form is rendered.
 *
 * @version	  1.0
 * @author    David Smith <[email protected]>
 * @license   GPL-2.0+
 * @link      http://gravitywiz.com/...
 */
class GW_GFUR_One_Way_Mapping {

    public function __construct( $args = array() ) {

        // set our default arguments, parse against the provided arguments, and store for use throughout the class
        $this->_args = wp_parse_args( $args, array(
            'feed_id'  => false,
            'keys'     => array()
        ) );

	    if( ! is_array( $this->_args['keys'] ) ) {
		    $this->_args['keys'] = array( $this->_args['keys'] );
	    }

        // do version check in the init to make sure if GF is going to be loaded, it is already loaded
        add_action( 'init', array( $this, 'init' ) );

    }

    public function init() {

        // make sure we're running the required minimum version of Gravity Forms
        if( ! property_exists( 'GFCommon', 'version' ) || ! version_compare( GFCommon::$version, '1.8', '>=' ) ) {
            return;
        }

        // carry on
	    remove_filter( 'gform_pre_render', array( 'GFUser', 'maybe_prepopulate_form' ) );
	    add_filter( 'gform_pre_render', array( $this, 'maybe_prepopulate_form' ) );

    }

	public function maybe_prepopulate_form( $form ) {

		$feed = GFUserData::get_update_feed( $form['id'] );

		// if no feed, return form unmodified
		if( ! $feed ) {
			return $form;
		} else
			// if the user is not logged in, add action to hide form and display error message
			if( ! is_user_logged_in() ) {
				add_action( 'gform_get_form_filter_' . $form['id'], array( 'GFUser', 'hide_form' ) );
				return $form;
			} else {

				if( $feed['id'] == $this->_args['feed_id'] || ! $this->_args['feed_id'] ) {

					$feed = $this->remove_meta_keys( $feed, $this->_args['keys'] );

				}

				$form = GFUser::prepopulate_form( $form, $feed );

			}

		return $form;
	}

	public function remove_meta_keys( $feed, $keys ) {

		$cleaned_meta = array();

		foreach( $feed['meta'] as $key => $value ) {
			if( ! in_array( $key, $keys ) ) {
				$cleaned_meta[ $key ] = $value;
			}
		}

		$cleaned_meta['user_meta'] = array();

		foreach( $feed['meta']['user_meta'] as $meta ) {
			if( ! in_array( $meta['meta_name'], $keys ) ) {
				$cleaned_meta['user_meta'][][ $meta['meta_name'] ] = $meta['meta_value'];
			}
		}

		$feed['meta'] = $cleaned_meta;

		return $feed;
	}

}

# Configuration

new GW_GFUR_One_Way_Mapping( array(
	'feed_id' => 45,
	'keys'    => 'paperless_billing'
) );