Hi Anthony, I am able to reproduce this problem in a small app (tested on windows - 2.9.5).
*MODEL:* db.define_table('Category', Field('Name'), Field('SubCategoryName')) # Insert test data if db(db.Category.id>0).count() == 0: db.Category.insert(Name='PC',SubCategoryName='Intel') db.Category.insert(Name='PC',SubCategoryName='AMD') db.Category.insert(Name='SmartPhone',SubCategoryName='Apple') db.Category.insert(Name='SmartPhone',SubCategoryName='HTC') db.Category.insert(Name='SmartPhone',SubCategoryName='Google') *CONTROLLER:* def index(): response.flash = T("Welcome to web2py!") return dict(message=T('Hello World')) def results(): if (request.vars.testval and session.var1): try: del session.var1 except Exception : pass if (request.vars.var1) and (not session.var1): session.var1 = request.vars.var1 grid = {} if session.var1: query = (db.Category.Name==session.var1) grid = SQLFORM.grid(query=query) return dict(grid=grid) *VIEWS:* *results.html* {{extend 'layout.html'}} {{=grid}} *index.html* {{extend 'layout.html'}} <form enctype="multipart/form-data" method="post" action={{=URL('default','results')}} > <select name="var1"> <option value="PC">PC</option> <option value="SmartPhone">Smart Phone</option> </select> <input type="submit" value='Submit'> <input type="hidden" name="testval" value="test" /> </form> *Steps to reproduce the problem :-* 1. Select any value from the drop down and hit submit button. 2. Select any GRID row and click on View 3. Use Browser Back button -> Document will expire, you have to refresh to get the results back (Tried on Chrome/Firefox) 4. Repeat Step2 5. Now instead of using Browser back button, use GRID embedded back button. 6. Now repeating step 2-3 won't cause any problem (document won't expire) until the new selection is made from the selection drop down. Please suggest something to resolve this problem. Thanks Sarbjit -- Resources: - http://web2py.com - http://web2py.com/book (Documentation) - http://github.com/web2py/web2py (Source code) - https://code.google.com/p/web2py/issues/list (Report Issues) --- You received this message because you are subscribed to the Google Groups "web2py-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to web2py+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.