imported package is not available in Play! framework template

Question

I have a Play 2.0 template with the following first lines:

@(item: Option[Item] = None,
    violations: java.util.Set[ConstraintViolation[Item]] = new util.HashSet[ConstraintViolation[Item]]())

@import java.util
@import javax.validation.ConstraintViolation

But the ConstraintViolation cannot be found and I get the error:

not found: type ConstraintViolation 

The bean validation API itself is available in the application since I can use it in a controller. What can I do to import it in my template?

Answer 1

Either use the fully-qualified name, i.e. @(item: Option[Item] = None, violations: java.util.Set[javax.validation.ConstraintViolation[Item]] = new util.HashSet[javax.validation.ConstraintViolation[Item]]()) or add to your general template imports in Build.scala, like this:

val main = PlayProject(appName, appVersion, appDependencies, mainLang = SCALA).settings(
  templatesImport += "javax.validation.ConstraintViolation"
)