Re: Executing validation on entry to class-based views

Hm, yes! Thanks, had forgotten about dispatch().

On Thu, Sep 26, 2013 at 1:24 AM, Daniel Roseman <daniel@roseman.org.uk> wrote:
> On Thursday, 26 September 2013 07:29:38 UTC+1, dspruell wrote:
>>
>> Greetings,
>>
>> I have an app with a CBV for the main functionality that I'd like to
>> do some validation on config settings (in settings.py) before carrying
>> out the view.
>>
>> My particular view in this case is a FormWizard, but I'd like to know
>> general to any CBV; what is the correct pattern for doing this? Is
>> there a standard way to execute validation code upon entering a view
>> that allows one to access the request object (e.g. for setting
>> messages) and redirecting clients?
>>
>> My initial thought was to override __init__() and perform it there but
>> IIANM it lacks self.request at that point.
>>
>> What I'd like to implement:
>>
>> if not settings.SOMEAPP_SETTINGS.get('sender_address'):
>> messages.error(self.request, "Configuration error:
>> submission sender address not found. Configure SOMEAPP_SETTINGS in
>> your project settings file.")
>> return redirect('index')
>>
>> --
>> Darren Spruell
>> phatb...@gmail.com
>
>
>
> One way would be to override `dispatch()`. You have access to the request
> there and can choose whether to call the super method to do the actual
> dispatching, or redirect instead.
> --
> DR.
>
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--
Darren Spruell
phatbuckett@gmail.com

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