Niphlod,
Thanks,
I will try to be as specific as possible.
Currently, I have 2 menus, both are defined in the models directory,
dashboardmenu.py has a list of nav menu items like home, about, etc.
menu.py contains another nav list that looks like the jpg I posted. This is
the one
I need extra help with.
These menus are specified in the layouts.html and display with no problems.
In the menu.py I want to display along with the menu title, a variable that
shows some
data value, a total, for example. I want the total to come from a
controller function,
not from a model.
I don't understand how to do this because every example for a menu I've
seen todate shows
a variable coming from a function in a model file or from a db object. I
think what I want can be done using html helpers, but I need to see an
example of this.
in models/menu.py,
response.menu = [
(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?
]
this results in an error,
name 'test2' is not defined
Traceback (most recent call last):
File "/Applications/v232web2py/gluon/restricted.py", line 212, in
restricted
exec ccode in environment
File "/Applications/v232web2py/applications/enp4/models/menu.py", line
35, in <module>
(CAT(T('Power Production'),BR(),B(test2),B('W'),BR(),A('Today''s
Peak',_href=URL('default','index')), myresult, 'W'), False,[]), #nearly
NameError: name 'test2' is not defined
This is the main problem,
I don't know how to make the test2 a global variable
in controllers/default.py there is a function,
def test2():
a = 26
b = 32
myval = a+b
return myval
I want the contents of test2 to show up in the menu above as a variable
'label' under the title
Daily Production. How do I do that, please?
I want to display the variable output of controller/default/test2 function
as a label in the menu.py, using html helpers., in the index.html view.
I've added this to index.html but it does not help,
{{if 'test2' in globals():}}
{{=test2}}
{{pass}}
Maybe it is not possible to do this?
On Wednesday, May 29, 2013 8:48:24 AM UTC-5, Niphlod wrote:
>
> I really don't understand what are you missing.
> Please post an example of what you want and an example on where you are
> stuck.
>
> PS: if "thesomething" you want to print comes as a result from a function,
> why is difficult to do
>
> def afunction(a, b):
> return a + b
> def yourcontroller():
> thesomething = afunction(4,5)
> response.menu.append(
> (thesomething, False, URL('bla bla'))
> )
> return dict()
>
>
>
> Il giorno mercoledì 29 maggio 2013 15:33:10 UTC+2, greaneym ha scritto:
>>
>> 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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