(newbie to both web2py and python - please be gentle)
I am trying to use two menu selection items to control a view and I need
guidance on the general strategy one should use. Intuitively (to me) this
seems like it should be easy, but I have made various attempts, all of
which fail in different ways. So, I assume I am approaching this in the
wrong way. I would like one selection to set something that controls the
type of the charts that will be displayed, and a second to control the
actual content of the charts (country). I thought I might do this by
simply replacing the URL() in response.menu with a call to my own function
that sets a global variable then calls the URL helper, but I am not having
any luck. I can get the controller and view to work with hard coded global
variables, so I think the problem is in menu.py (but could be missing the
big picture). The relevant part of menu.py is
ChartType = 'Recent'
Country='US'
def setChartType(x):
global ChartType
ChartType=x
URL('default', 'Country',)
return()
def getChartType():
return(ChartType)
def setCountry(x):
global Country
Country=x
return(URL('default', 'Country'))
def getCountry():
return(Country)
response.menu = [
(I('xxx'), False, URL('default','index'), [])
]
def _():
app = request.application
ctr = request.controller
response.menu+=[
(SPAN('View',_style='color:yellow'),False, None, [
(T('by Country'),False,None, [
(T('Canada'),False, setCountry('Canada'),),
(T('US'),False, setCountry('US'),),
]),
]),
(SPAN('Chart Type',_style='color:yellow'),False, None, [
(T('Recent'),False, setChartType('Recent'),),
(T('Historical'),False,setChartType('Historical'),),
]),
]
_()
Will this strategy work with small tweaks, or am I missing something big?
Related, I can see that I might be able to do this using AJAX. There seems
to be some overlap between things that could be done directly within the
web2py/python framework, and things that might be done with AJAX. What are
the main reasons one would usually choose one or the other?
Thanks,
Paul
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