How use afterInterceptor on Ajax Requests in Grails?

Question

When using afterInterceptor in Grails controller I would do it like this

def afterInterceptor = [action: trackPageView, only: 'show']


private trackPageView = { model ->
  // so something
}

def show() { 
  def user = User.get(params.id)
  if (request.xhr)
     render view:'show', model: [user: user]
  else 
     [user: user]
}

This is working great on non-ajax requests but on Ajax request the model is always [:].

How do I get the user object in trackPageView for Ajax requests?

Answer 1

To support both ajax and non-ajax request, you have to do some content negotiation and return the respective response. Here's an example straight from the documentation:

import grails.converters.JSON
import grails.converters.XML

class BookController {
  def list() {
    def books = Book.list()

    withFormat {
      html bookList: books
      json { render books as JSON }
      xml { render books as XML }
    }
  }
}

UPDATE : I'll leave the original answer in place as reference and context. Here's an answer/suggestions to your intended question.

Assuming your non-ajax call is working, and you're able to acquire the user object from the model that's passed into your trackPageView closure, can you confirm the following:

• are you calling the exact same url on ajax and non-ajax calls
• are you passing in the same params (eg user id) for both ajax/non-ajax calls

If yes to both, then technically you should have a model with a user object inside trackPageView since 1) you're calling the same method and 2) passing in the same params from both ajax/non-ajax calls.