Validating User Input - Stripes...and Java Web Development is Fun Again - page 65

public Resolution save() {
Contact contact = getContact();
getContactDao().save(contact);
getContext().getMessages().add(
new SimpleMessage("{0} has been saved.", contact)
);
return new RedirectResolution(ContactListActionBean. class );
}
public Resolution cancel() {
getContext().getMessages().add(
new SimpleMessage("Action cancelled.")
);
return new RedirectResolution(ContactListActionBean. class );
}
}
We'll now add some validations to this form.
Making a Field Required
Let's begin by making the contact's email address a required field. First,
it's better to let the user know up front about required fields. One way is
to make the field border thicker by adding a "required" class and styling
it in the CSS file:
Download email_06/web/WEB-INF/jsp/contact_form.jsp
<s:text name="contact.email" class="required"/>
Download email_06/web/css/style.css
input.required {
border-width: 2px;
}
Next, adding @ValidateNestedProperties with @Validate(field="email") to con-
tact validates the "contact.email" nested property. Remember that the
contact property moved to the parent ContactBaseActionBean , so the val-
idation must override either the getter or the setter method in Contact-
FormActionBean :
Download email_06/src/stripesbook/action/ContactFormActionBean.java
@ValidateNestedProperties({
@Validate(field="email", required= true , on="save")
})
@Override
public void setContact(Contact contact) {
super .setContact(contact);
}