Hello, Tapestry developers - Using Tapestry's BeanEditor component with Bootstrap 4, I'm trying to get validation error messages appear with a red font color like they used to with Bootstrap 3.
Trying to understand from the Tapestry source code why Tapestry outputs Bootstrap v3-style "help-block" instead of v4-style "form-text" [1], I became aware of the SymbolConstants.ERROR_CSS_CLASS configuration symbol. Setting its value to "form-text text-danger" did the trick for me. Two recommendations for improvement: First, the Configuration page of the Tapestry website [2] doesn't mention the ERROR_CSS_CLASS configuration symbol. It should be added to make it easier for other Tapestry users trying to solve the same problem or similar problems. Second, importing the Bootstrap4Module should provide validation messages with a red font color as the default. Thank you for the time your are putting into Tapestry. I'm a big fan. Volker [1] https://getbootstrap.com/docs/4.3/components/forms/#help-text [2] https://tapestry.apache.org/configuration.html
