How To Add Additional Options To A Woocommerce Payment Gateway’s Options Page Correctly

I am creating a plugin that will execute certain functions when a specific payment gateway is available in WooCommerce. It is logical for my plugin options to be added to the same options page as the gateway’s options. I do not want to alter the gateway’s behaviour in any way, just display the options for my plugin on the same page. How to do it correctly?

1. How To Add Additional Options To A Woocommerce Payment Gateway’s Options Page Correctly?

  1. The correct way to add additional options to a WooCommerce payment gateway’s options page is to use the woocommerce_payment_gateway_settings filter.
  2. This filter allows you to add additional settings fields to the payment gateway’s options page.
  3. For example, the following code adds a new text field to the options page for the Stripe payment gateway.
    add_filter( 'woocommerce_payment_gateway_settings', 'add_stripe_options', 10, 2 );
    function add_stripe_options( $settings, $current_section ) {
        if ( $current_section == 'stripe' ) {
            $settings[] = array(
                'name' => __( 'Additional Option', 'woocommerce' ),
                'id' => 'additional_option',
                'type' => 'text',
                'desc' => __( 'This is an additional option for the Stripe payment gateway.', 'woocommerce' ),
                'default' => '',
            );
        }
        return $settings;
    }
  4. The following code adds a new text field to the options page for the Square payment gateway.
    add_filter( 'woocommerce_payment_gateway_settings', 'add_square_options', 10, 2 );
    function add_square_options( $settings, $current_section ) {
        if ( $current_section == 'square' ) {
            $settings[] = array(
                'name' => __( 'Additional Option', 'woocommerce' ),
                'id' => 'additional_option',
                'type' => 'text',
                'desc' => __( 'This is an additional option for the Square payment gateway.', 'woocommerce' ),
                'default' => '',
            );
        }
        return $settings;
    }
  5. How does the function add_filter work?
  6. The add_filter function is a WordPress function that allows you to “hook” into existing WordPress functions and modify their behavior.
  7. It takes two parameters: the name of the function you want to hook into, and a callback function that will be called when the hooked function is executed.
  8. The callback function can then modify the behavior of the hooked function, such as adding additional options to a WooCommerce payment gateway’s options page.

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