Django 1.9 - JSONField in Models - django

Question

I'm trying to set up a models file in Django 1.9 using the new JSONField. I have found examples using postgres but none with MySql. In the examples with postgres they do a
from django.contrib.postgres.fields import JSONField
How do I go about importing it for MySql?
Thanks

Answer 1

UPDATE: Django 3.1 now supports JSONField natively for multiple databases: https://docs.djangoproject.com/en/dev/releases/3.1/#jsonfield-for-all-supported-database-backends
As stated in other answers, Django's native JSONField (as of 1.9 and 1.10) is for PostgreSQL.
Luckily, MySQL 5.7.8+ comes with a native JSON datatype. You can add it your Django project with the django-mysql package and Django 1.8+
pip install django-mysql
from django.db import models
from django_mysql.models import JSONField
class MyModel(models.Model):
my_json_field = JSONField()
Read more about the django_mysql JSONField here.

Answer 2

Django JSONField is Postgres only.
https://docs.djangoproject.com/en/3.0/ref/contrib/postgres/fields/#django.contrib.postgres.fields.JSONField
UPDATE:
There is support for MYSQL via 3rd party library django-mysql

Answer 3

# Install jsonfield package
pip install jsonfield
# Define my model
from django.db import models
import jsonfield
class MyModel(models.Model):
the_json = jsonfield.JSONField()
More detail:https://pypi.python.org/pypi/django-jsonfield

Answer 4

I know this question is about Django 1.9, but JSONField can now be used with all supported database backends with the release of Django 3.1.

Answer 5

Try to save data of this model in postgres db on my local machine:
models.py:
from django.db import models
from django import forms
from inputData.models import Input
from django.contrib.postgres.fields import JSONField
class Results(models.Model):
generator = models.OneToOneField(Input, on_delete = models.CASCADE, primary_key = True)
pvalues = JSONField()
views.py
def result(req, res_id):
try:
inp = Input.objects.get(pk = res_id)
path = os.path.join(BASE_DIR, 'uploads\\' + str(res_id) + '\\t.txt')
p_values = parse_res.main(path)
res = Results(generator = inp, pvalues = p_values)
res.save(using = 'results')
except Results.DoesNotExist:
raise Http404
return render(req, 'result.html', {'res': res})
settings.py
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.sqlite3',
'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
},
'results': {
'ENGINE':'django.db.backends.postgresql',
'NAME': 'results',
'PASSWORD': 'password',
'USER': 'user',
'HOST': '127.0.0.1',
'PORT': '8000'
}
}
Model Results (see models.py) uses JSONField, which have about 200 bytes of data
But at the line res.save(... of code views.py browser does response too long.
Whatäs wrong with JSON?
What problems can be on server besides cache?

Answer 6

For today I'd recommend using jsonfield2 or waiting for native JSON support for all database backends in Django 3.