Play Framework: How do I get querystring value inside html template file

Question

I am working on Play Framework 2.0 for Java and I have a querystring url like http://localhost:9000/project/detail?id=1 , when this url hits It will call a HTML template file eg. detail.scala.html . So I want to check is there querystring exist in url in my HTML file.

ex:

@if(existsQueryString) 
         @showPerticularProductDetail
else
         @showAllProductList

Please help me or give any suggestion for this. I dont want to pass some variable or any flag from controller to view for checking the condition. I just want to check is querystring there in url inside my HTML.

Answer 1

You can access the request either directly if you're in a Java project, or via an implicit parameter if you are in a Scala project.

In a Java project, you can use it directly to check the queryString :

@if(request.queryString.containsKey("myKey")){
     @showPerticularProductDetail
else
     @showAllProductList

If you're in a Scala project, you need to add the request as an implicit parameter of your view :

@(title: String)(implicit request: play.api.mvc.Request)

And your controller should also declare this implicit parameter :

def detail = Action { implicit request =>
    ...
    myTemplate.render()
}