Simple way to use parameterised UI messages in Wicket?

Question

Wicket has a flexible internationalisation system that supports parameterising UI messages in many ways. There are examples e.g. in StringResourceModel javadocs, such as thi

Answer 1

In case you have a Model in your Component which holds an object with values you want to access from your placeholders as substitutions, you can write:

new StringResourceModel("salutation.text", getModel());

Let's imagine getModel()'s return type is IModel and User contains fields like firstName and lastName. In this case you can easily access firstName and lastName fields inside your property string:

salutation.text=Hej ${firstName} ${lastName}, have a nice day!

Further information you can find here: https://ci.apache.org/projects/wicket/apidocs/8.x/org/apache/wicket/model/StringResourceModel.html#StringResourceModel-java.lang.String-org.apache.wicket.model.IModel-