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Use a CMB2 options page to populate Ninja Forms dropdown: Use an options page to create dynamic select options for a Ninja Forms. Easier for a client to manage. https://www.damiencarbery.com/2019/01/use-a-cmb2-options-page-to-populate-ninja-forms-dropdown/
<?php
/*
Plugin Name: CMB2 Options Page
Plugin URI: https://www.damiencarbery.com/2019/01/use-a-cmb2-options-page-to-populate-ninja-forms-dropdown/
Description: Use CMB2 to add an options page with repeater fields.
Author: Damien Carbery
Version: 0.2
*/
// Create an options page.
add_action( 'cmb2_admin_init', 'dcwd_register_course_dates_options' );
function dcwd_register_course_dates_options() {
$cmb_options = new_cmb2_box( array(
'id' => 'hse_course_dates',
'title' => 'Course Dates',
'object_types' => array( 'options-page' ),
// The following parameters are specific to the options-page box
'option_key' => 'course_dates', // The option key and admin menu page slug.
'icon_url' => 'dashicons-calendar-alt', // Menu icon. Only applicable if 'parent_slug' is left empty.
'capability' => 'publish_posts', // Capability required to view options-page.
'position' => 2, // Menu position. Only applicable if 'parent_slug' is left empty.
'save_button' => 'Save Dates',
) );
$cmb_options->add_field( array(
'desc' => 'Add dates for forthcoming courses.',
'type' => 'title',
'id' => 'options_title'
) );
// Options fields IDs only need to be unique within this box. Prefix is not needed.
$course1_dates_group_id = $cmb_options->add_field( array(
'id' => 'course1_dates_group',
'type' => 'group',
'repeatable' => true, // This allows the group fields to be repeated.
'options' => array(
'group_title' => 'Course One {#}',
'add_button' => 'Add another Course One date',
'remove_button' => 'Remove this Course One date',
'closed' => false, // Repeater fields open by default so that the first repeater field get set.
), ) );
$cmb_options->add_group_field( $course1_dates_group_id, array(
'name' => 'Course 1 date',
'id' => 'course_date',
'type' => 'text_date_timestamp',
'date_format' => 'j M Y',
'attributes' => array(
'required' => 'required',
),
) );
$cmb_options->add_group_field( $course1_dates_group_id, array(
'name' => 'Course 1 location',
'id' => 'course_location',
'type' => 'text',
'attributes' => array(
'required' => 'required',
),
) );
}
// Verify that CMB2 plugin is active.
add_action( 'admin_notices', 'verify_cmb2_active' );
function verify_cmb2_active() {
if ( ! defined( 'CMB2_LOADED' ) ) {
$plugin_data = get_plugin_data( __FILE__ );
$plugin_name = $plugin_data['Name'];
?>
<div class="notice notice-warning is-dismissible"><p>Plugin <strong><?php echo $plugin_name; ?></strong> requires <a href="https://wordpress.org/plugins/cmb2/">CMB2 plugin</a>.</p></div>
<?php
//error_log( 'CMB2 is not active.' );
}
}
<?php
// Inject the course info into the Ninja Forms Select options.
add_filter( 'ninja_forms_render_options', 'dcwd_add_course_dates_to_ninja_forms_select', 10, 2 );
function dcwd_add_course_dates_to_ninja_forms_select( $options, $settings ) {
if ( 'listselect_course_date' == $settings[ 'key' ] ) {
$dates = get_option( 'course_dates' );
if ( $dates ) {
if ( array_key_exists( 'course1_dates_group', $dates ) ) {
$course_dates = array();
$now = time(); // Used to exclude dates in the past.
// Add the course dates and locations to an array and sort.
// Only include courses for dates in the future.
foreach ( $dates[ 'course1_dates_group' ] as $i ) {
if ( $i[ 'course_date' ] >= $now ) {
$course_dates[ $i[ 'course_date' ] ] = array_key_exists( 'course_location', $i ) ? $i[ 'course_location' ] : 'TBC';
}
}
ksort( $course_dates, SORT_NUMERIC ); // Sort the courses by date.
// Create the new options.
$options = array();
foreach ( $course_dates as $date => $location ) {
$options[] = array(
'label' => date( 'j F Y', $date ) . ' at ' . $location,
'value' => esc_attr( date( 'j M Y', $date ) . ' at ' . $location ),
);
}
}
}
}
return $options;
}
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