添加一些有关产品价格的信息的正确方法

Question

I am writing a simple WooComerce plugin. This is the first time I work with WordPress so my question may be quite noobish.

The plugin should just provide some additional information about product price, which is approximate price in local currency (based on visitors location).

Pseudo dummy code:

add_action(
    'woocommerce_get_price_html', 
    function append_local_price($content, $product) {
        return $content . ' <span class="amount-local-price">Approx. (RSD 3,804)</span>';
    }, 
    10, 
    2
);

Dummy implementation, formatting and other issue aside, since that is not my focus in this question, what is the proper way of hooking into WooCommerce workflow in this case?

Because what I see as a pros of this approach is that you just install plugin and it works, zero configuration. But downsides are html rendering is not easily configurable (css class etc...) and you cannot control when it is applied.

Is some kind of short code more appropriate in this case?

This will require editing the theme in order to get local price shown, right?

Answer 1

Other than not using an anonymous function (a named function can be removed), I don't see a problem with your current approach. You can use a very minimal stylesheet or even non at all and leave styles to the themes. As far as html content, you can run yours through a filter so that people can modify it if desired. Don't forget to make your strings translation-ready.

add_filter( 'woocommerce_get_price_html', 'so_31702808_local_price' );
function so_31702808_local_price( $content, $product) {
        $local_price = "RSD 3,804"; // retrieved from your API
        $local_price_html = apply_filters( 'so_31702808_local_price_html', ' <span class="amount-local-price">'. $sprintf( __e( 'Approx. (%s)', 'your-text-domain'), $local_price ) .'</span>', $local_price, $product );
        return $content . $local_price_html;
    }, 

);

If the local price does not come back formatted locally, then you can use wc_price() with its args to format it as needed.