See http://web2py.com/books/default/chapter/29/4#Workflow:
"The view sees every variable defined in the models as well as those in the dictionary returned by the action, but does not see global variables defined in the controller." web2py builds an environment and runs the models in that environment (which may then add objects to it). It then creates a copy of the environment before running the controller, and after running the controller, it adds the items returned in the dictionary by the controller to the pre-controller copy of the environment, which is where the view is executed. You can see this here: http://code.google.com/p/web2py/source/browse/gluon/main.py#200 Anthony On Thursday, January 5, 2012 9:03:03 AM UTC-5, Peter O wrote: > > Hihi, > > I am baffled by what I see between Example 1 and 2. > > It may be a good case to improve my understanding of the run-time > environment of web2py. > > Thanks in advance for any comments. > > VIEW: (test.html) > > <html> <body> > {{=globals().get('t1', False)}} > </body> </html> > > CONTROLLER: > > == Example 1 == > > def test(): > global t1 > t1 = True > return dict() # the browser show 'False'. I was expecting 'True' > > == Example 2 == > > def test(): > global t1 > t1 = True > > response.render('default/test.html', globals() ) #the return is > discarded > > return dict() # the browser show 'True'. I was expecting the same > result as Example 1. > > > > > >
