Niphlod, I am reposting with more questions on menus. Thank you, your response did clear up some questions.
I want to have a menu item that shows the current total value of a
calculation,
as well as a sparkline chart showing the values of a time series.
>From the web2py-users, it seems that the menu tuple can be modified, the
first and third elements of the tuple can be nested helper lists and the
boolean in the middle can be used to turn on/off menu items, or just left
alone. The boolean is what you call the "active" element, I think.
but I need to see more examples of nested helpers. In meantime more
experimenting.
Here is something closer to what I need using your suggestion of putting
test1 into myresult,
which only works if I put it in the model file above the menu.
It's not styled yet, but it has values appearing in the menu.
<see jpg>
Can you please help me figure out how to put the variable in the menu when
it's coming from a controller function instead like test1? That is where
most of my functions are.
models/menusample.py contains
def test1():
a = 20
b = 30
myval = a+b
return myval
myresult = test1()
response.menu = [
(CAT(T('Power Production'),BR(),B(myresult),B('W'),BR(),A('Today''s
Peak',_href=URL('default','index')), myresult, 'W'), False,[]), #nearly
(CAT(T('Daily
Production'),BR(),B(URL=('default','test2')),B('W'),BR(),'Today''s Peak',
myresult, 'W'), False,[]), #get no value from test2, how to get value?
(T('Item 2'), False, URL('default','index'), [])
]
controllers/defaults.py contains function test2,
def test2():
a = 26
b = 32
myval = a+b
#return dict(myval=myval) #use whichever return will work in menu
return myval
I want to display the output of test2 as a variable, label in the menu, and
it comes from a controller, not a model.
On Tuesday, May 28, 2013 5:47:39 PM UTC-5, Niphlod wrote:
>
> missed the "very detailed post".
> what does it mean that you want help with menu comprehension using a
> controller ?
> The menu can be defined wherever you want. Having it defined in models is
> just a shortcut to avoid having to redefine it over and over, because
> usually the menu is "fixed".
> That being said, response.menu is just a list of tuples, optionally
> containing another list as the fourth argument.
> The scaffolding app has a pretty extensive menu where you can see the
> structure needed to generate the menu.
> Basically each item is
>
> (text, active_or_not, html_helper, [childrens])
>
> now, let's forget for a second about:
> - active_or_not (it just decorates with an "active" class the element)
> - html_helper (you can put whatever you want, but then you'd override the
> text part)
> usually the menu item is
> (text, False, URL('bla', 'bla') , [childrens])
>
> This creates an A() tag, that holds "text" as value, URL('bla', 'bla') as
> link, and has submenus (one for each item listed in childrens)
>
> to sum up, to have a menu that basically is
> - menu 1
> - menu 1.1
> - menu 1.2
> - menu2
> you'd have something like
> response.menu = [
> ('menu 1', False, URL('bla', 'bla'), [
> ('menu 1.1', False, URL('bla', 'bla')),
> ('menu 1.2', False, URL('bla', 'bla'))
> ]),
> ('menu 2', False, URL('bla', 'bla'))
> ]
>
> From there on, it's basic list slicing and dicing with python.
> let's say you'd like to "insert" a "menu 1.3" in your controller, so in
> that particular page only, a menu 1.3 would be visible....
> you'd have to append the new element to the fourth element (the [children]
> list) of the first menu.
> Remembering that python lists are 0-indexed :
> response.menu[0][3].append(
> ('menu 1.3', False, URL('bla', 'bla'))
> )
> And voilà.
>
> Clearer ?
>
> On Wednesday, May 29, 2013 12:04:27 AM UTC+2, greaneym wrote:
>>
>> I posted a very detailed explanation of my progress so far and what I
>> needed further. I can see it in the web2py-group posting but maybe you
>> cannot see it? I need further help with menu comprehension using a
>> controller instead of a model file. I can post again if you can't see the
>> request. thanks.
>>
>>
>> On Tuesday, May 28, 2013 3:25:53 PM UTC-5, Niphlod wrote:
>>>
>>>
>>>
>>> On Tuesday, May 28, 2013 10:15:24 PM UTC+2, greaneym wrote:
>>>>
>>>> Thanks that was helpful and got me further but I need a bit more help.
>>>>
>>>>
>>>>
>>> on what ?
>>>
>>
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<<attachment: menu.jpg>>
