调用类的函数，它不能调用类中的其他函数

Question

I'm trying to adjust WP Woocommerce bookings plugin and add functionality for getting events from Google calendar API.

There's class

Class WC_Bookings_Google_Calendar_Integration extends WC_Integration

, which provides token acquiring and authorization.

I added new function to the class

public function get_googlecal_bookings( $bookable_product, $min_date = 0, $max_date = 0 )

that suppose to retrieve all bookings in between min and max dates for certain product.

From my functions.php I'm calling it with

$existing_bookings = WC_Bookings_Google_Calendar_Integration::get_googlecal_bookings($bookable_product, $from, $to);

and this works with dummy data.

Although, when I try to use other class functions within function get_googlecal_bookings, like $api_url = $this->calendars_uri . $this->calendar_id . '/events/'; or $access_token = $this->get_access_token(); I get nothing.

I know I call them incorrectly, just need to point me in the right directions

Answer 1

you are calling it as a static function WC_Bookings_Google_Calendar_Integration::get_googlecal_bookings, but you are referencing $this, which won´t work, since there´s no instance.