#django

I see "qpe.is_valid()"

Page just cutted out the rest nicely in my browser.

But yes, form, serializer both are very close to each other and do work.

what is the difference between APIView and viewsets?

They're different tools.

apiview is very primitive.

what are the cons of using " return HttpResponseRedirect(request.META.get('HTTP_REFERER')) "

viewsets otoh are very highlevel tool that handles basic CRUD for you.

And creates "standard" url endpoints as well.

But since your usecase is just to get single value you don't need post/put/delete actions.

ah okay so you are saying i dont need the tooling of viewset

django_noob, I think you would find very useful reading the "API Guide" if you haven't already (there are sections for views and viewsets :)

I guess what confuses me is this answer here

And please, don't read SO. It's so full of pure crap.

The accepted answer aruges that the router doesnt work with general views

there are good answers on SO, as well, but it can be difficult to tell the good from the bad

django_noob, that seems to be correct, if you're using a normal view you want to register it normally, like you would for a django view

that is true, django_noob

if you want an apiview, you put it in urls like a normal view

oh okay

what tyrion-mx said :)

well

thanks so mcuh for the help

normally i can get things done

but i get hung up on "best practices"

last question

whats the difference between using django rest router and normal django url patterns?

they are completely different

url patterns hook a single view to a single endpoint

to understand that you have to understand the difference between viewsets and views. And then you can understand what a router is :)

the router is used to hook a viewset to the router, which generates a set of url endpoints

ahhhhhh

ok

ok

i got you guys

if you were hooking up CRUD in url patterns, you would need at least 4 patterns

that is just one router/viewset hookup

and router would help for that

to understand all this, my suggestion would be to go through the tutorial (it has all that covered)

im not a fan of the tutorial

why not?

My biggest grudge is that it focuses on model view sets and model serializers

and I have this unique situation where I have a view that is using multiple models

Well that's to most common usage.

django_noob: it's not terribly unique, and there are many ways to handle it

django_noob, it's an overview of the whole framework, you can skip the parts that are not interesting :P

fair enough

django_noob: have you read through this? http://www.django-rest-framework.org/api-guide/...

If the models are not related, I question why they are in one api endpoint

outside the context of django, does a endpoint need to accommodate both post and get to be considered "restful"

They are related

I am using all of them to compute a value

and this endpoint returns that value

django_noob: That is very normal and there is no magic involved.

You can even use standard Django function based view to do that.

sorry if I am repeating what others already said, but that sounds like an apiview since you don't need crud on it, you just need a single view

django_noob, don't worry about "restful" :)

can a non apiview that does have all crud operations still be considered restful?

django_noob: restulf is an architecture style.

django_noob, "rest" and restful are abused words that mean very little. If you want to understand what REST is, you could read roy fielding's dissertation

but that would take up some time

REST in practice from O'Reilly is also pretty good book.

django_noob, see here: http://www.django-rest-framework.org/topics/res...

This is only a 1/2 django question... give an entity that would have a status (occupied/available) tied to a time frame (either start datetime + duration or startime/endtime), how would you query whether a device is available given a certain point in time?

I don't know if I'm tripping myself up by thinking about time as a continuum rather than thinking pragmatically - but I'm curious what kind of answers I'll get!

Thank you to everyone that helped me design my api endpoint

I have one template file that I want to use for different models. Anything wrong with defining get_delete_url() and get_edit_url() at the model level similar to get_absolute_url()?

call a query at a certain time and get the result?

really really appreciate

gonna run with apiview

masterrex: I would use start and end and then query based on current time

masterrex: on postgres you can use DateTimeRangeField, which comes with some convenient lookups as well

anyone here familiar with the FieldTracker from django-model-utils?

let say I have a table, Offers, but I want to make one of them special and have references to it programmatically

what is the best way to go about doing this?

I want to calculate and update some fields when a model is updated, so I'm adding a pre save signal - I need the exsiting db datas to be able to do the calculations, is there any better way to do this than just do a get?

totallyserious you mean mark a given Offer instance as 'special'? A boolean field or some choices-based field. What do you mean by refer to it programatically? a ForeignKey field?

ironi doing a get in pre_save works, but you can also override the model's `__init__(...)` to copy the relevant data to a tmp instance variable for comparison in a pre_save signal (or overridden .save(...))

is instance._state.adding safe to use in a signal to check if a model instance is being updated

At least, I think that would work

I have a model with a uuid pk so cant do if self.pk\

ironi: Why not?

jaddison: interesting

jtiai: being a private property and I can't find it in the docs

ironi: pk property should be documented somewhere...

jtiai: oh you mean why not, because the uuid field has uuid.uuid4 as default and those are set before saving

jtiai: I could of course set it in a custom save method

or maybe there is a better way I'm not aware of

I think in pre_save default values are not yet applied.

(django docs are not explicit about when default values are applied in object save sequence)

jtiai: ah right,

you might be right

I'm trying to use Djangos RequestFactory to make requests to my django code without using the http server.

However, when I do a get(), I get back a WSGIRequest object - how do I go from there to a HttpResponse?

ASUchander: Please see the topic.

jtiai: it's actually already set there

wonder was there creating or similar kwarg passed in pre_save...

bummer, no there isnt. :/