For anyone who wants to add their virtual voice to the bugs at The Foundry,
I got a response back from Jake in support saying that there is an old bug
#13208 about the autosave pref not being overridable (logged by me, go
figure) and he's logged a new one about knobDefaults not working on the
prefs in general -- #50801.



On Thu, Aug 27, 2015 at 12:17 AM, Den Serras <[email protected]> wrote:

> Gotcha, thanks Matt. I will try it. I assumed it would have the same
> problem where the node is changed to the values stored in the Preferences
> file if the user opens prefs and hits Cancel - but I'll try it and let you
> know if I run into any trouble. It is definitely better than my current
> trick of forcing a preferences write.
>
> Den
>
>
> On Wednesday, August 26, 2015, Matt Plec <[email protected]> wrote:
>
>> Hey Den -
>>
>> There is a formal way to set default knob values: a knobDefault command
>> at startup. I expected that to do what you're after. It's just that it
>> doesn't seem to work on the preferences node.
>>
>> However the prefs node is a little special -- it needs to load knob
>> settings from your ~/.nuke prefs file at startup. Maybe there's something
>> buggy in the way that's interacting with knob default settings. I'm not at
>> the foundry any more so I can't check the bug tracker or dig around in the
>> code but I would be surprised if it hasn't come up before. Out of curiosity
>> I just sent an email to support. I'll post back here if I hear back
>> anything worth adding.
>>
>> The autoSaveFilter Ben suggested handles more complex cases of autosave
>> but could be used to work around the knob default not working for this
>> case. But for the prefs node knobs in general the workaround I suggested
>> should do the job. I'm not sure why you think it won't stick. The value is
>> forced in at startup and again any time the knob is changed (which is what
>> works around the panel cancel reverting it). It overrides whatever's in my
>> preferences9.0.nk file, too. I was testing in 9.0v6 NC with the
>> AutoSaveTime knob, though, so YMMV. Give it a try before you dismiss it. If
>> it works for you, you can at least get everything in your init.py and not
>> need the other save prefs hack you mentioned. It will prevent users being
>> able to set that pref themselves, though.
>>
>> Matt
>>
>>
>> On Tue, Aug 25, 2015 at 11:16 PM, Den Serras <[email protected]>
>> wrote:
>>
>>> Thanks Ben and Matt!
>>>
>>> It amazes me that there isn't a more formal way to do this. I think if I
>>> use your method, Matt, I'd still have the same issue with my initial
>>> changes not sticking. I've already disabled the knobs I don't want them to
>>> mess with, so I'm less worried about that. It just seems like either
>>> there's a formal system for this that I'm totally missing or I'm
>>> accomplishing it all wrong. Ben's suggestion handles the autosave problem
>>> but there's lots of others that need fixing.
>>>
>>> I'm just surprised that hacking a save to the preferences or changing it
>>> back with a callback really is the solution The Foundry envisioned for
>>> studio-wide preferences.
>>>
>>> Thanks!
>>> Den
>>>
>>>
>>>
>>>
>>>
>>> On Monday, August 24, 2015, Matt Plec <[email protected]> wrote:
>>>
>>>> For other knobs, like the autosave time, you could set a knob changed
>>>> callback to reset the value to what you want whenever it gets changed,
>>>> which seems to catch that prefs panel cancel resetting it. You might also
>>>> want to disable it so users don't get frustrated trying to set it to
>>>> something themselves. Try this in init.py (using 9.0v6, ):
>>>>
>>>> nuke.toNode('preferences')['AutoSaveTime'].setValue(33)
>>>> nuke.toNode('preferences')['AutoSaveTime'].setEnabled(False)
>>>>
>>>> def fixPrefs():
>>>>   k = nuke.thisKnob()
>>>>   if (k.name() == 'AutoSaveTime'):
>>>>     print 'fixing AutoSaveTime'
>>>>     k.setValue(33)
>>>>
>>>> nuke.addKnobChanged(fixPrefs, nodeClass="Preferences")
>>>>
>>>>
>>>>
>>>> On Tue, Aug 25, 2015 at 8:42 AM, Ben Dickson <[email protected]>
>>>> wrote:
>>>>
>>>>> This should be doable with the nuke.addAutoSaveFilter callback
>>>>>
>>>>>
>>>>> http://docs.thefoundry.co.uk/nuke/80/pythondevguide/callbacks.html#autosavefilter
>>>>>
>>>>>
>>>>> On 25/08/15 11:56, Den Serras wrote:
>>>>>
>>>>>> I wonder if I'm going about this all wrong, considering the dearth of
>>>>>> information on this out there...
>>>>>>
>>>>>> I'm modifying some of the preferences in our Nuke setup globally,
>>>>>> notably the autosave location, which is a custom location (not the
>>>>>> same
>>>>>> as the default environment variables). I set those preferences by
>>>>>> changing the knobs and then using a hacky script I found on the forums
>>>>>> by Javier Garcia to save the preferences. If I don't do the save, then
>>>>>> if the user opens the prefs and hits cancel, the changes are lost.
>>>>>>
>>>>>> It seems like a backwards way to solve some of this. There should be
>>>>>> some kind of studio preference which simply overrides any user values.
>>>>>> Is everyone just using this same trick?
>>>>>>
>>>>>> Thanks!
>>>>>> Den
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> Nuke-python mailing list
>>>>>> [email protected], http://forums.thefoundry.co.uk/
>>>>>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-python
>>>>>>
>>>>>>
>>>>> --
>>>>> ben dickson
>>>>> 2D TD | [email protected]
>>>>> rising sun pictures | www.rsp.com.au
>>>>> _______________________________________________
>>>>> Nuke-python mailing list
>>>>> [email protected], http://forums.thefoundry.co.uk/
>>>>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-python
>>>>>
>>>>
>>>>
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>>
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