This documentation is not using the current rendering mechanism and is probably outdated. The extension maintainer should switch to the new system. Details on how to use the rendering mechanism can be found here.
Which requirements should my extensions meet to make it work with wt_cart?¶
By analyzing the TypoScript constants you can see your extension (which stores the products) should contain the following fields:
- An input field for the product title (string).
- An input field for the gross price (string).
- An input field for the product id (puid) which has to be an integer.
- A select field for the tax class. You could use the following classification: 1 for normal; 2 for reduced; 3 for free. This behavior can be easily changed by editing the TypoScript Setup.