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Re: Reclaiming context


Hello Sandy,

I think this is a great idea.

It has been debated a few times if it was a bug that the workflow engine
doesn't propagate the context. Well in my opinion that's valid to say the
context is a compound object made by the user settings, overridden
eventually by the parameters of the HTTP request scope. These last
parameters stand for user interface details like from which menu you are
trying to act on a record or what are the currently selected records. It's
normal that the impact of these parameters is limited and it's normal that
you can also imagine load the persisted data right from the database
instead and still get the right business logic.
So in a word, even in the workflow which is supposed to be able to act
right on persisted data, it's okay to loose the track of the HTTP request
params but as you mentioned this is not a reason to loose the context
related to the user settings (language, timezone...)

I personally like your proposal for v7. As for v8 the similar logic should
happen in the @api decorator providing the context on self and I am not
sure, but may be it's already implemented like that.

Thanks for the proposition!

Raphaël Valyi
Founder and consultant
http://twitter.com/rvalyi <http://twitter.com/#!/rvalyi>
+55 21 3942-2434

On Thu, Aug 28, 2014 at 1:04 PM, Sandy Carter <
sandy.carter@xxxxxxxxxxxxxxxxxxxx> wrote:

> Hello community,
> While debugging yet another translation error in Odoo 7.0, I came up
> with a simple way to reclaim lost contexts in functions.
> The bug I was fighting is one where workflow actions do not pass any
> contexts. This bug manifests as chattr messages in english when using
> the workflows.
> As I don't have the time to fix it in the server, nor am I ready to jump
> through the hoops to get that fix integreated in the Odoo, I found a way
> to fix this bug in my module.
> The way I countered the bug in my module is in the write function where
> I would usually start with
>     if context is None:
>         context = {}
> or
>     context = context or {}
> In this case it was None since the workflow mechanism would not have a
> context. I saw that since I have the user id, I can still get the
> context for this user.
> I replaced the familiar context check with:
>     context = context or self.pool['res.users'].context_get(cr, uid)
> I find this simple enough. The line is under 80 characters and it can
> replace the usual context check.
> Furthermore it assures that everything done within this function and its
> parent functions have at least the language in the context, something I
> have been struggling with a lot lately.
> What does the community think of this as a possible standard for
> modules, replacing the usual if context is None lines.
> Are there possible drawbacks to using this line?
> Thank you for you input!
> --
> Sandy Carter
> Consultant en logiciel libre
> Développeur OpenERP
> Savoir-faire Linux Inc.
> 514-276-5468 poste 142
> http://www.savoirfairelinux.com
> sandy.carter@xxxxxxxxxxxxxxxxxxxx
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