Re: ModelAdmin.has_change_permission gives 403

On 26/11/2014 11:59 AM, Mike Dewhirst wrote:
> From the docs ...
>
> https://docs.djangoproject.com/en/1.6/ref/contrib/admin/#django.contrib.admin.ModelAdmin.has_change_permission
>
> ... is working nicely except it just pops up a standard error page
> 403 Forbidden when it returns False.


Actually, I must have changed my code and refreshed an already rendered
form when I thought it was working. Just clicking on the wrong model in
the admin list pops up a 403 Forbidden page. It looks like
ModelAdmin.has_change_permission() must return True to render the change
form.

Maybe someone can tell me how to make a model read-only for certain
users based on their relationship with the model?

To elaborate somewhat, a company owns a substance displayed on a page in
the admin and any user should be able to see it but only users who are
members of the same company may change or delete it.

Thanks

>
> How can I intercept this in the Admin and treat it like an error
> displayed like all the other validation errors generated from the
> model.clean() method???
>
> I'd like to raise a business rule violation exception on saving the
> model.
>
> Thanks for any hints
>
> Mike
>

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