Grails

Could not initialize proxy - no Session error when trying to access 1-1 relationship attribute when mapping directly to a view.

Details

  • Type: Bug Bug
  • Status: Closed Closed
  • Priority: Major Major
  • Resolution: Won't Fix
  • Affects Version/s: 1.3.3, 1.3.4
  • Fix Version/s: None
  • Component/s: View technologies
  • Labels:
    None
  • Environment:
    Windows

Description

I have a header template within my main.gsp layout:

<g:render template="/header"/>

It references a domain class with a child property

<%
     def user = User.get(1)
%>
${ user.profile.name }

Where profile belongsTo user and is not null.

If I access this page via a controller, it works fine.

However, when I try to access this page with only an UrlMapping - i.e.

"/"(view:"/index")

I get the following exception:

org.codehaus.groovy.grails.web.taglib.exceptions.GrailsTagException: Error executing tag <g:render>: Error evaluating expression [user.profile.name] on line [8]: could not initialize proxy - no Session at C:/Users/Tomas/work/childTest/grails-app/views/layouts/main.gsp:14

	at C__Users_Tomas_work_childTest_grails_app_views_layouts_main_gsp$_run_closure2.doCall(C__Users_Tomas_work_childTest_grails_app_views_layouts_main_gsp:44)

This can be reproduced with the attached project - navigate to http://localhost:8080/childTest

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Burt Beckwith added a comment -

This is a bug, but scriptlets are evil. Using a taglib doesn't fix the issue (you're still apparently outside of the OSIV and in the SiteMesh filter) but you can wrap in withTransaction:

import childtest.User

class SiteTagLib {

   def userProfileName = { attrs ->
      User.withTransaction { status ->
         def user = User.get(attrs.userId)
         out << user.profile.name
      }
   }
}
Show
Burt Beckwith added a comment - This is a bug, but scriptlets are evil. Using a taglib doesn't fix the issue (you're still apparently outside of the OSIV and in the SiteMesh filter) but you can wrap in withTransaction: import childtest.User class SiteTagLib { def userProfileName = { attrs -> User.withTransaction { status -> def user = User.get(attrs.userId) out << user.profile.name } } }
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Graeme Rocher added a comment -

As burt said, doing this is a GSP is just plain wrong

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Graeme Rocher added a comment - As burt said, doing this is a GSP is just plain wrong

People

  • Assignee:
    Graeme Rocher
    Reporter:
    Tomas Lin
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Dates

  • Created:
    Updated:
    Resolved: