Dynamically pre-populate Gravity Forms field with custom fields from custom post types

Here's How I Populated my GravityForms Dropdown using a little code that I found created by Joshua David Nelson, [email protected]

With a few minor modifications I was able to get the proper output to the dropdown box (was looking for user email addresses instead of user nicenames, but you can modify this script to output anything you want with a few small changes to the query args)

// Gravity Forms User Populate, update the '1' to the ID of your form
add_filter( 'gform_pre_render_1', 'populate_user_email_list' );
function populate_user_email_list( $form ){

// Add filter to fields, populate the list
foreach( $form['fields'] as &$field ) {

// If the field is not a dropdown and not the specific class, move onto the next one
// This acts as a quick means to filter arguments until we find the one we want
    if( $field['type'] !== 'select' || strpos($field['cssClass'], 'your-field-class') === false )
        continue;

// The first, "select" option
    $choices = array( array( 'text' => 'Just Send it to the Default Email', 'value' => '[email protected]' ) );

// Collect user information
// prepare arguments
$args  = array(
    // order results by user_nicename
    'orderby' => 'user_email',
    // Return the fields we desire
    'fields'  => array( 'id', 'display_name', 'user_email' ),
);
// Create the WP_User_Query object
$wp_user_query = new WP_User_Query( $args );
// Get the results
$users = $wp_user_query->get_results();
//print_r( $users );

// Check for results
    if ( !empty( $users ) ) {
    foreach ( $users as $user ){
        // Make sure the user has an email address, safeguard against users can be imported without email addresses
        // Also, make sure the user is at least able to edit posts (i.e., not a subscriber). Look at: http://codex.wordpress.org/Roles_and_Capabilities for more ideas
        if( !empty( $user->user_email ) && user_can( $user->id, 'edit_posts' ) ) {
            // add users to select options
            $choices[] = array(
                'text'  => $user->user_email,
                'value' => $user->id,
            );
        }
    }
}

    $field['choices'] = $choices;

}

return $form;
}

/* end of populate advisors for dropdown field */

To get this to work all you should need to do is add the above code to your functions.php file, add the 'ID' (into the add_filter reference) of the GravityForm that you're looking to alter and add the 'Class' of your dropdown field (where is says 'your-field-class').

If you have any questions about the above code, let me know.

Adam

I'm working on this one right now - I was able to pass the values from one page to another appending the information onto the end of the url -

ex. http://www.your-website.com/[email protected]

For this to work you have to check the 'Allow this field to be populated Conditionally' when editing the field in question.

It's not the be-all-end-all for me (I'd like to generate this on page load, rather than attaching it to a button, but it's a start. I'll comment again when I have the filtering worked out.

Adam