Select a Gravity Form to assign to a CPT

Hi Mark, this looks like a custom field type. I found the Github repo above is useful and you can replicate it to work with Meta Box. This is the code to get list of forms and here is the tutorial on creating new field type.

Hi Brian,

That means you are creating a new/custom select field and pull the GF forms (name or ID) to save with the field.

You can try to use the sample code to create a custom select field, show the dropdown GF form name and save the ID of the form

add_action( 'init', function() {
    if ( class_exists( 'RWMB_Field' ) ) {
        class RWMB_GForm_Select_Field extends RWMB_Field {
            public static function html( $meta, $field ) {
                $forms = GFAPI::get_forms();
                $html = '';
                $html .= '<label for="' . $field['id'] . '">Choose a form:</label>
                        <select id="' . $field['id'] . '" name="' . $field['field_name'] . '">';
                foreach ( $forms as $id => $form ) {
                    $html .= '<option value="' . $id . '">' . $form['title'] . '</option>';
                }
                $html .= '</select>';
                return $html;
            }
        }
    }

} );

add_filter( 'rwmb_meta_boxes', 'your_prefix_register_meta_boxes' );

function your_prefix_register_meta_boxes( $meta_boxes ) {
    $prefix = '';

    $meta_boxes[] = array (
        'title' => esc_html__( 'Select Form', 'text-domain' ),
        'id' => 'select-form',
        'post_types' => array(
            0 => 'post',
        ),
        'context' => 'normal',
        'priority' => 'high',
        'fields' => array(
            array (
                'id' => $prefix . 'gform_select',
                'type' => 'gform_select',
                'name' => esc_html__( 'Select Form', 'text-domain' ),
            ),
            
        ),
    );

    return $meta_boxes;
}

then you can show the GF form in the post content with the ID saved by getting the field value.

For more information, please follow these documentations
https://docs.gravityforms.com/adding-a-form-to-the-theme-file/
https://docs.metabox.io/custom-field-type/

Hi Long,
I spoke too soon. It is listing available Gravity Forms in the dropdown.

But it's not saving a value. For example if I select a form option other than the "first" in dropdown and save, when I go back to check the field it always displays the "first" form in listing. But it's not saving any value to output.

What do you think is missing?

Thanks in advance!

Hi Long,
Thanks for the fast reply.The only issue now is that If I select the first form in dropdown and check the ID it outputs it always gives it a "0" id/value. But the id of the first GForm is "1" not zero. If I select the second form option in dropdown and save. The value is "1", but the form id is really "2".

I'm wondering if I need to add a "Select a form" placeholder text within the dropdown field so that it takes the "0" value?

Thoughts, what do you suggest? - hope I explained correctly.

Thanks for your help!