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Django library that can make ANYTHING into json

Project description

## Installation ##

1. Install lib with pip:

`pip install jsonate`

**- OR -**

Put the "jsonate" directory somewhere in your python path

2. Add "jsonate" to your installed apps (in the file)

## Usage ##

### In templates

{% load jsonate_tags %}

{{ anything|jsonate }}

This is especially useful for embedding data in in data attributes for
use with javascript libraries like jQuery (note jsonate-attr is identical to jsonate|escape):

<div id="user-widget" data-user="{{ user|jsonate_attr }}"></div>

user_data = $("#user-widget").data('user');

Or just use it directly in javascript...

var user_data = {{ user|jsonate }};

### In Python

from jsonate import jsonate

# querysets
json = jsonate(User.objects.all())

# values
json = jsonate(User.objects.values())

# model instances
json = jsonate(User.objects.get(email=""))

Jsonate turns datetimes into iso format for easy parsing in javascript

# formatted response for ease of reading...
>>> print jsonate(User.objects.all()[0])
"username": "asdfasdf",
"first_name": "asdf",
"last_name": "asdf",
"is_active": false,
"email": "",
"is_superuser": false,
"is_staff": false,
"last_login": "2011-08-22T19:14:50.603531",
"id": 5,
"date_joined": "2011-08-22T19:14:50.220049"

## Fields / Exclude -- Serialization options

You may specify which fields should be serialized in the meta options of
your models. This affects the serialization of model instances, and querysets,
just like the Admin!


from django.db import models

class MyModel(models.Model):
normal_info = models.CharField(max_length=10)
sensitive_info = models.CharField(max_length=10)

class Meta:
jsonate_exclude = ('sensitive_info',)
# this would also work:
# jsonate_fields = ('normal_info',)

By default the User model in `django.contrib.auth.models` is monkey-patched
to exclude the password field when serializing querysets or instances

If you want to specify which fields will be serialized on a per-case basis,
use `values()` instead. like so

>>> jsonate(User.objects.values("username", "password"))
... '[{"username": "someuser", "password": "sha1$f26b2$d03a6123487fce20aabcdef0987654321abcdef0"}]'

note: this is obviously not a real password or salt :)

You can also specify a `to_json()` method on your model to more tightly control serialization.

When Jsonate serializes an object, the `to_json()` method will *always* be used
if it is found. The method may return any object that Jsonate can serialize (be careful of infinite


import time
from django.db import models

class MyModel(models.Model):
normal_info = models.CharField(max_length=10)
sensitive_info = models.CharField(max_length=10)

def to_json(self):
return {"normal_info": self.normal_info, "serialized_at": time.time()}

from jsonate import jsonate

my_model = MyModel(
normal_info="hi mom",
sensitive_info="My Social Security number is: ###-##-####"

# {"normal_info": "hi mom", "serialized_at": 1345233658.29246}

## JsonateField

JsonateField is a simple JSONField like the ever popular JSONField project.
The only difference is JsonateField uses the Jsonate JSON serializer, which
makes it more robust than other JSONField implementations.


from django.db import models
from jsonate.fields import JsonateField

class Customer(models.Model):
extra_data = JsonateField(blank=True, null=True)

customer = Customer()
customer.extra_data = {
"height": 65,
"weight": 115,

Don't ask me why you'd care about your customer's height and weight.

## The JsonateResponse

`JsonateResponse` is a subclass of HttpResponse that works almost exactly
the same, except that it accepts any object as it's data rather than just
strings. It returns the resulting json as mimetype "application/json"


from jsonate.http import JsonateResponse

def my_view(request):
return JsonateResponse(request.user)

# response contains:
{"username": "asdfasdf", "first_name": "asdf", "last_name": "asdf", "is_active": false, "email": "", "is_superuser": false, "is_staff": false, "last_login": "2011-08-22T19:14:50.603531", "id": 5, "date_joined": "2011-08-22T19:14:50.220049"}

## Decorator

The `JsonateResponse` is great, but life could get even easier! The
`@jsonate_request` decorator (inspired by the ajax_request decorator
in django-annoying) will try to serialize anything a view returns
(via JsonateResponse) return it in an HttpResponse with mimetype

The only thing it will *not* try to serialize is an HttpResponse.


def my_view(request):
form = MyForm(request.POST)
if form.is_valid():
return HttpResponseRedirect("/some/path/")
return form.errors

With valid input, the HttpResponseRedirect passes through, untouched.

If there are form errors the response comes back looking something like

"username": [
"This username is already taken"
"email": [
"Please enter a valid email."

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