#django

you should find the video on youtube.

damned wifi; how many answers did i miss?

mekhami: Seriously!!!

behelit none.

mekhami: NICE!

mekhami: that can't be!

https://www.youtube.com/watch?v=vQjmz9wCjLA Back2Basics

Itkovian: please take my grief!

How can I return an arbitrary object from partial_update()?

in Django REST Framework, sorry

return Request(a_python_dict, status=status.HTTP_200_OK) doesn't seem to work correctly

behelit consider it done

:)

so, noone who knows how to use a custom manager in a m2m relation? figured that'd be a pretty common setup.

mekhami: I'm still watching all the PyCon videos. Hadn't seen that one otherwise that would have been pretty close to the top.

Any hints would be appreciated

ldlework: are you looking at this? http://www.django-rest-framework.org/api-guide/...

is there someone who made an invoice app in django?

anyone?

is there a way to attach additional data to a form field? I would like to have an instance of a model displayed for each field

I figured it out: use a ModelForm and set the instance

stown: https://www.djangopackages.com/packages/p/djang...

pydanny: that is only for generating pdfs et cetera.

i need a form with inline form (invoice rules) and on the right calculation of stockprice

is very complex

How can I serialize a ValidationError in JSON?

How can i get PositiveFloatFIeld

delgiudices: Is it important you can store negative values in your field?

It’s for price

i don’t think price should be negative

delgiudices: Add a validator for min value.

Debnet: how?

delgiudices: https://docs.djangoproject.com/en/1.8/ref/valid...

Each field can have a validators=[] attribute which take a list of built-ins or custom validators.

For you case, it's MinValueValidator which seems appropriate.

I can see

Where can i see where to import it from

johnride: For what use? REST validation?

delgiudices: In the beginning of the page, you have some examples.

Debnet: i don’t see any imports can you?

delgiudices: https://docs.djangoproject.com/en/1.8/ref/valid...

Seems to be "django.core.validators".

Debnet: ops

delgiudices: For your information, never use FloatField for monetary.

Use DecimalField instead.

Float can be imprecise for some case.

Debnet: oh okay thanks

delgiudices: The best way to figure it is to do this in python shell : 0.1 + 0.1 + 0.1 - 0.3

This operation doesn't return 0.

But something very close.

Due to float imprecision.

Whereas decimal('0.1') + decimal('0.1') + decimal('0.1') - decimal('0.3') will be decimal('0.0') without a doubt. :D

Does anyone has a suggestion for an invoice form with inline forms, seems not much to find about it

stown: Not at all. Long time I didn't work with forms in Django.

Debnet: not with forms yeah?

stown: Hum?

Debnet: you build django apps and not work with forms?

Yeah, mainly using ORM and Django REST Framework.

Debnet: I want to serialize a ValidationError to JSON because I send my form in Ajax and I want to send back the errors to the frontend in JSON

I build frontend with others technologies like AngularJS.

johnride: You could wrap all exceptions occuring when "cleaning" data and return them to the client.

ValidationError are iterables.

Like any exception.

It's pretty simple to do.

Hi, I've a formset of 5 forms. after posting the formset data..i'm saving forms which are validated and return the unvalidated forms of formset. Now after entering correct data in remaining forms..and posting again.. i'm recieving 5 forms again.. any clues why this is happening?

ajay2611: Hard to understand your problem without a code sample and further details.

Debnet: that's pretty much what I do and I get an error that says that my ValidationError is not JSON serializable https://dpaste.de/CpBr

Dennet: AngularJS for frontend and just POST instructions with ORM for add/edit/ functionality?

Debnet: AngularJS for frontend and just POST instructions with ORM for add/edit/ functionality?

stown: Not only POST, all HTTP verbs that suits to REST.

Debnet: isnt the client side authorization key readable in the javascript of AngularJS?

johnride: It's not as easy. :D

ValidationError as object is not serializable.

I managed to get the keys with https://dpaste.de/B21G

You have to compose your own dict of error messages for your objects.

stown: Authorization key?

ok so loop through the errors and compose my dict then pass is to the JsonResponse

johnride: Exactly.

Debnet: you say you use REST with POST/PUT etcetera in your AngularJS app for add/edit functionality

Yep.

Debnet: you will need a rest authentication right?

Yes, absolutly.

Debnet: how you do that in angularjs when the user sees the client side angularjs scripts?

stown: You have plenty of choices actually. You have shared session, auth token, other complex auth like oAuth, and so on.

You can even have HTTP auth.