Define own feedback messages in Wicket

Question

How do I define my own feedback messages in Wicket? For example: if I give an incorrect username, I want to get an error message like "The user name in incorrect, try to login again." instead of using the default error message.

What would an example be like?

Answer 1

You can display your own error messages using error() and warn() and info(). If you want to show errors dependent on validators or the required flag you can define a properties file with the same name as the class which contains a mapping of field -> message. For example:

Index.java

Form form = new Form("myform");
form.add(new TextField("name").setRequired(true));
form.add(new PasswordTextField("password").setRequired(true));
form.add(new TextField("phonenumber").setRequired(true));

Index.properties

Required=Provide a ${label} or else...

All required fields

myform.name.Required=You have to provide a name

The field name in the form myform when it is required.

password.Required=You have to provide a password

Any field with the name password when it is required.

phonenumber.Required=A telephone number is obligatory.

Any field with the name phonenumber when it is required.

This shows a variety of ways of setting a feedback message for specific components.

You can also put the properties files next to the following component level (in order of importance, top highest):

• Page Class
• Component Class
• Your Application Class
• Wickets Application Class

Hope that helps