Populate ACF select field options with Gravity Forms to select a specific form

acf-gravity-forms-field.php

<?php
/**
 * Populate ACF select field options with Gravity Forms forms
 */
function acf_populate_gf_forms_ids( $field ) {
	if ( class_exists( 'GFFormsModel' ) ) {
		$choices = [];

		foreach ( \GFFormsModel::get_forms() as $form ) {
			$choices[ $form->id ] = $form->title;
		}

		$field['choices'] = $choices;
	}

	return $field;
}
add_filter( 'acf/load_field/name=submit_project_gf_form_id', 'acf_populate_gf_forms_ids' );

Thanks. And you can use this if you'd like to use this function in a exported PHP file:

if (class_exists('GFFormsModel')) {
    $choices = [];
    foreach (\GFFormsModel::get_forms() as $form) {
        $choices[$form->id] = $form->title;
    }
}

acf_add_local_field(array(
    'key' => 'contact_form',
    'label' => 'Contact form',
    'name' => 'contact_form',
    'type' => 'select',
    'instructions' => '',
    'required' => 0,
    'conditional_logic' => 0,
    'choices' => $choices,
    'default_value' => array(),
    'allow_null' => 0,
));

Great solution! How do i display the selected form on my page? The value from the select box is the form ID.

Hey @SjorsHartwijk

You're looking for the gravity_form() function, see https://docs.gravityforms.com/adding-a-form-to-the-theme-file/