Please check the value of does_user_have_admin_roles -- it must be True
when you think it isn't.
Anyway, an alternative is:
{{if 'admin_roles' in globals():}}
Even better, just initialize admin_roles to an empty list and do:
{{for r in admin_roles:}}
The loop will not be executed if the list is empty.
A couple other tips:
1. In Python, prefer if some_boolean over if some_boolean == True.
2. When naming a boolean, don't make it sound like a question (e.g.,
prefer has_admin_roles over does_user_have_admin_roles). This goes with #1
(if
has_admin_roles is more appropriate grammatically than if
does_user_have_admin_roles).
Anthony
On Thursday, February 4, 2016 at 7:46:19 PM UTC-5, Alex Glaros wrote:
>
> I'm trying to avoid an extra DB hit by first checking for records in
> controller. I set a "yes" or "no" type flag
>
> But the conditional in the view doesn't care if flag is set to no, it
> still raises error stating that the set within the conditional as undefined.
>
> Is the only way to get around this is put the isempty check in the view
> instead of controller?
>
> {{if does_user_have_admin_roles == True:}}
> {{for r in admin_roles:}}
>
> <type 'exceptions.NameError'> name 'admin_roles' is not defined
>
> also tried: {{if admin_roles:}}
>
> thanks,
>
> Alex Glaros
>
>
>
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