Load All Ninja Forms into Advance Custom Fields Dropdown

acf-ninja-form-dropdown.php

function acf_load_ninja_form_field_choices( $field ) {
    
    // reset choices
	$field['choices'] = array();
	$ninja_forms = Ninja_Forms()->form()->get_forms();
	foreach($ninja_forms as $nf):
		$value = '[ninja_forms id='.$nf->get_id().']';
		$nf_settings = $nf->get_settings();
		$label = $nf_settings['title'];
		$field['choices'][$value] = $label;
	endforeach;


    // return the field
    return $field;
    
}

add_filter('acf/load_field/name=ninja_form', 'acf_load_ninja_form_field_choices');