Question

Using the validation from PlayFramework and the data binding, is it possible, via (maybe) a decorator, to avoid binding some fields?

For example, I have this model :

class User extends Model {
    @Required
    @Email
    public String email;

    // I'd like to avoid setting this
    public String password;
}

and in my model :

Store store = new Store();
Binder.bindBean(params.getRootParamNode(), store, null);        
validation.valid(store);

If the user POST email AND password, password will be also set, but I don’t want to.

How can I do that?

Answer 1

If you don’t want to persist the data, but you want it to be bound as part of the automatic binding, then you can use the @Transient annotation…

Example

class User extends Model {
    @Required
    @Email
    public String email;

    // I'd like to avoid setting this
    @Transient
    public String password;
}

If you don’t want it to be bound at all, then use the NoBinding annotation

@play.data.binding.NoBinding

Example

public class User extends Model {
    @NoBinding("profile") public boolean isAdmin;
    @As("dd, MM yyyy") Date birthDate;
    public String name;
}