#django

If have a User model and a mapping table that maps owners to resources. How do I get all users that have a row in that mapping table? Totally trivial in SQL but what is the django ORM syntax for that query?

cnk: dpaste models so I can use the right names

so it's really just a many-to-many through table you've made explicit for no apprciable reason

right

User.objects.filter(resourceowner__isnull=False)

Thank you!

I was trying to start from ResourceOwner and getting nowhere. But the user query should be great. Thanks

if you want Users, you start at User

mattmcc: re earlier question, if not form.field.errors returns true if the form was never submitted before

Sure, because there aren't any errors.

mattmcc: yea, I was after only returning true if the form was already submitted

ie you already submitted the form, and this field is good, but this field is bad

Ah, testing form.data might suffice.

For 'has been submitted'

So here I am changing all my explicit uses of '/static/' and '/media/' and I come across a place where in some admin modelforms I have a class Media defined with some js and css in it, and these are full paths.

mattmcc: hmm, what is form.data? having trouble finding docs on it

a_little_birdie: which, iirc, if relative will be resolved through static

So the question is, is there an elegant way to avoid saying '/static/app/js/jquery.js' for example, in the Media: js = {

a_little_birdie all the media and static stuff should be relative

Ahh that is the kind of answer I was hoping for :)

Azelphur: Oh, nevermind, https://docs.djangoproject.com/en/1.8/ref/forms... is better.

and you should just have one setting in the settings.py file

Lemme try it!

then in templates there's a {% static %} tag

mattmcc: thanks :)

yep perfect, awesome thanks

superdupernoob yea I am using the static tag, actually that is what I am doing today is cleaning up a situation where everything was in media and I am moving what should be static into static

coolio

But in the transitional phase I have them defined the same

I actually discovered today that I was serving a lot of files through django that did not need to be served through django

I did the opposite today. I started serving all my static files through django because I didn't want to go crazy with my docker setup

superdupernoob: Check out whitenoise

Yea I have it set up so that if nginx intercepts the request then great, but if it does not then django will serve it.

This all came about because I decided to implement a dynamic thumbnailer with a cache instead of pregenerating thumbnails.

mattmcc I just added urlpatterns += staticfiles_urlpatterns() to my urls.py

Which works great, now I can serve whatever size I need on demand.

whitenoise is going to be better than that?

But now we are storing images and files in the database, so ya.. django will serve everything under /media/ . There will be a cache of course.

matrmcc I'm having issues with whitenoise

it saying I need to set the DJANGO_SETTINGS_MODULE env variable, but I'm doing that the line before

os.environ["DJANGO_SETTINGS_MODULE"] = "config.settings.local"

oh, nvm

I just needed to move the import statement below that line.

Thanks for pointing out whitenoise to me

hey everyone, I have a search form that runs a GET request and returns on the same page. How can I have the form auto-populate the same entries when it refreshes?

superdupernoob: same way as you normally do... render it from the Form instance you used to process the submission

so I might select a category and hit "Filter" (submit) and I when it comes back I want that category already selected in the form so I can enter a price range

FunkyBob what do you mean?

are you using a Form class to validate the user input?

/win 6

blah

So use request.GET instead of request.POST as the bound data for the form.

I am using a form class, yes

superdupernoob: perhaps if we knew what your actual code was...

one sec

are you passing the Form class to the template, and rendering the form inputs from it?

yes, that is what I am doing

so

it will already render with the choices/values set

but it doesn't....