Integrating with T3Chimp

You can customize the behavior of T3Chimp by subscribing to the beforeRenderView or onValidateForm event through the Singal / Slot functionality provided by TYPO3. You can use the beforeRenderView event to adapt the form before it's rendered or to add custom view variables. onValidateForm is called right before the form is checked for validity and allows you to add custom validations or to change the forms values before it's sent to MailChimp.

When adding custom view variables don't use any of the following variable names as they are used by T3Chimp itself and you will most likely break the functionality.

• language
• languageIso
• pageId
• contentId
• form
• pageType

Take a look at the example extension and the TYPO3 documentation to get details on how to use the Signal / Slot functionality.