Populating Django model sql tables with a json file - sql

Question

I would like to use a json file to populate an instance of a Django model. I have essentially flatten the structure in the json to a few table/classes. How do you map the json data to the Django tables?
What is the most efficient ways of doing this?
Thanks.

Answer 1

$ python manage.py loaddata yourjsonfile.json
Let's say you want to populate the standard django user table with 2 users: John Lennon and Yoko Ono. Your json will something like:
[
{
"pk": 1,
"model": "auth.user",
"fields": {
"username": "john",
"first_name": "John",
"last_name": "Lennon",
"is_active": true,
"is_superuser": true,
"is_staff": true,
"last_login": "2015-06-03T14:07:31.392Z",
"groups": [],
"user_permissions": [],
"password": "pbaasdf_sha256$12001$9Ser7lc1k1pWQFqk0x3u/T6I3",
"email": "john#lennon.com",
"date_joined": "2015-03-10T15:38:34.406Z"
}
},
{
"pk": 2,
"model": "auth.user",
"fields": {
"username": "yoko",
"first_name": "Yoko",
"last_name": "Ono",
"is_active": true,
"is_superuser": false,
"is_staff": false,
"last_login": "2015-05-19T13:36:58.444Z",
"groups": [],
"user_permissions": [],
"password": "baasdf_sha256$12cJskLs9Ser7lc1k1pWQFqk0x3u/T6I3",
"email": "yoko#ono.com",
"date_joined": "2014-05-19T13:36:58.444Z"
}
}
]

Answer 2

"Providing initial data for models"
It’s sometimes useful to pre-populate your database with hard-coded data when you’re first setting up an app. You can provide initial data via fixtures.
A fixture is a collection of data that Django knows how to import into a database. The most straightforward way of creating a fixture if you’ve already got some data is to use the manage.py dumpdata command. Or, you can write fixtures by hand; fixtures can be written as JSON, XML or YAML (with PyYAML installed) documents. The serialization documentation has more details about each of these supported serialization formats.