Andrew, do you think having the autodetector not "resolve" settings to their values and instead include that as references in auto-generated migrations is something we should try to implement?
If so, let's suggest that solution on https://code.djangoproject.com/ticket/24648 On Wednesday, July 15, 2015 at 7:58:02 PM UTC-4, Andrew Godwin wrote: > > Hi Marcin, > > Having migrations per-app is kind of a key part of the way the design > works, but as for the rest of it, you're free to just write migrations > yourself and ignore makemigrations - the format is intended to be > human-writable. > > We also deliberately separated the schema editing backends from the > migration code itself, so you're free to develop your own migration > solution that overrides some of the logic of how Django works without > having to re-implement all of the SQL abstraction, but I will tell you that > in my experience the solution we have now is the one that works the best > for most people (South did indeed use to have a form of semi-manual > picking). > > Dependencies also make things more complex - my attempts to try and > communicate interdependent changes to human in textual/graphic form were > unsuccessful, hence the current method of just doing everything for you as > best we can. > > As for a short-term fix, Collin's idea of importing the choices into the > migration to stop it detecting more changes sounds like a decent temporary > fix. > > Andrew > > On Wed, Jul 15, 2015 at 4:46 PM, Marcin Nowak <marcin....@gmail.com > <javascript:>> wrote: > >> Thanks for clarification, Andrew. I understand it. >> >> The real solution (for me) is not to do anything "automagically". In my >> "dream" I see migrations whose can be "picked" manually (or semi-manually >> via "pickmigrations <appname>") into my project, whenever I want. No >> autochecks, no automigration for anything, only bunch of helpers (i.e. >> change-detector. picker). Real/valid/selected/picked migrations should be >> "imported" as a project-wide changesets without splitting by apps (no >> dependency problem, easier conflicts resolve), and migrations in reusable >> apps should be provided as a resource(s) to pick/import. >> >> I would like to spent some time while creating stable and solid >> migrations in my project instead of searching workarounds for runtime >> issues. >> But this means a big architecture change and I know that is improssible >> to do for years... >> >> Thanks again. >> Marcin >> >> >> On Thursday, July 16, 2015 at 1:10:39 AM UTC+2, Andrew Godwin wrote: >>> >>> Hi Marcin, >>> >>> Django persists every single field attribute change, no matter what it >>> is - this was a deliberate decision as we didn't want to declare certain >>> attributes as "not important for schema" (for example, a subclass of >>> ChoiceField might use an enum column type for the choices and so need that >>> change). >>> >>> That said, this is definitely a common problem and I'm starting to think >>> we should revisit it - specifically, have field classes themselves say >>> which attributes are not worth making changes for (perhaps combined with >>> greater control by fields over how their schema gets made). This isn't >>> currently possible though. >>> >>> Also, yes, Django doesn't see unpacked .egg files as any different than >>> anything else (they're just directories after all) - we have no way of >>> telling which apps are yours and which are external, really. This should >>> only happen if the external app already has a migrations directory, so the >>> app in question should probably try and present a consistent choices list >>> to the migration system in the meantime if you want to avoid this. There's >>> no other real fix for this right now. >>> >>> Andrew >>> >>> On Wed, Jul 15, 2015 at 5:53 PM, Marcin Nowak <marcin....@gmail.com> >>> wrote: >>> >>>> Hi Andrew, >>>> >>>> I think I've found it. This reusable app uses a kind of dynamic choices >>>> (based on settings or somethin' else) and Django detetcs field definition >>>> change (choices attr). >>>> >>>> So the question is - should Django detect change of choices attribute >>>> even if database schema is not really altered? >>>> And the original question modified - should Django generate migration >>>> file inside of an egg when runtime configuration or settings are changing? >>>> >>>> BR, >>>> Marcin >>>> >>>> >>>> >>>> On Thursday, July 16, 2015 at 12:07:52 AM UTC+2, Andrew Godwin wrote: >>>>> >>>>> Hi Marcin, >>>>> >>>>> Django will only make migrations for external apps that already have >>>>> "migrations" directories and have model changes - it shouldn't make new >>>>> migrations unless you've actually changed the models in those reuseable >>>>> apps. Are you sure you're not specifying the names of those apps on the >>>>> makemigrations command line? Are you using something like --noinput? >>>>> >>>>> Andrew >>>>> >>>>> On Wed, Jul 15, 2015 at 3:16 PM, Marcin Nowak <marcin....@gmail.com> >>>>> wrote: >>>>> >>>>>> Hello, >>>>>> >>>>>> I'm working on a project which is based on Django`s internal >>>>>> migrations. >>>>>> Sometimes when switching between branches (not sure for 100%), Django >>>>>> complains about changes in my models. >>>>>> >>>>>> When `makemigrations` command is executed Django generates migrations >>>>>> in external (reusable) app placed in egg. And this is *strange*, I think. >>>>>> I don't want to modify any external app, and I don't want to depend >>>>>> on temporary migrations created only on my local machine. >>>>>> >>>>>> Why Django is creating migrations for external apps, especially >>>>>> placed in eggs? >>>>>> Migrations should be handled and created only for apps within the >>>>>> project, and read-only for others. >>>>>> >>>>>> What do you think? >>>>>> How I can workaround this issue? >>>>>> >>>>>> (Django 1.7.8) >>>>>> >>>>>> >>>>>> Best Regards, >>>>>> Marcin >>>>>> >>>>>> -- >>>>>> You received this message because you are subscribed to the Google >>>>>> Groups "Django developers (Contributions to Django itself)" group. >>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>> send an email to django-develop...@googlegroups.com. >>>>>> To post to this group, send email to django-d...@googlegroups.com. >>>>>> Visit this group at http://groups.google.com/group/django-developers. >>>>>> To view this discussion on the web visit >>>>>> https://groups.google.com/d/msgid/django-developers/77b46084-ffa1-43a0-ae2d-206f868cbaa5%40googlegroups.com >>>>>> >>>>>> <https://groups.google.com/d/msgid/django-developers/77b46084-ffa1-43a0-ae2d-206f868cbaa5%40googlegroups.com?utm_medium=email&utm_source=footer> >>>>>> . >>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>> >>>>> >>>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "Django developers (Contributions to Django itself)" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to django-develop...@googlegroups.com. >>>> To post to this group, send email to django-d...@googlegroups.com. >>>> Visit this group at http://groups.google.com/group/django-developers. >>>> To view this discussion on the web visit >>>> https://groups.google.com/d/msgid/django-developers/81e00a02-95fa-451d-aa24-1e4bd592f511%40googlegroups.com >>>> >>>> <https://groups.google.com/d/msgid/django-developers/81e00a02-95fa-451d-aa24-1e4bd592f511%40googlegroups.com?utm_medium=email&utm_source=footer> >>>> . >>>> >>>> For more options, visit https://groups.google.com/d/optout. >>>> >>> >>> -- >> You received this message because you are subscribed to the Google Groups >> "Django developers (Contributions to Django itself)" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to django-develop...@googlegroups.com <javascript:>. >> To post to this group, send email to django-d...@googlegroups.com >> <javascript:>. >> Visit this group at http://groups.google.com/group/django-developers. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/django-developers/4c57141a-7ab0-40fe-ba6a-27d054b745df%40googlegroups.com >> >> <https://groups.google.com/d/msgid/django-developers/4c57141a-7ab0-40fe-ba6a-27d054b745df%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> >> For more options, visit https://groups.google.com/d/optout. >> > > -- You received this message because you are subscribed to the Google Groups "Django developers (Contributions to Django itself)" group. 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