Typical workflow
If you want to create a new piece of the system, first of all I would create the new API endpoint which you will be using, inside the urls.py file.
Bill is the name of the view which will take care of that url path.
name='bill' is related to some use inside html templates, I read it is a good practise so that's why. link
path('api/v1/bill/', Bill ,name='bill')
Then create your model inside datame application, official documentation about model field types.
Needs to be reviewed
@csrf_exempt
Don't forget to import your models
from .models import Offer_model
Documentation about how to create a new object or how to retrieve new objects from database, link
I use python3 manage.py shell as recommended on the tutorial.
Use JsonResponse({...}) for sending a json from server to client.
Postman is great for testing endpoints, you can test GET or POST requests (And any other HTTP request).
An example of POST would be
http://127.0.0.1:8000/api/v1/offer/ as url
HEADERS key=Content-type and value=application/json
BODY, mark form-data
Names in key will be used in your view to retrieve each option.
Add in your project admin.py the next line related to the model you would like to view from the django admin panel.
Don't forget to import your models from .models import Offer_model
admin.site.register(Offer_model)
Create a superuser account and then you will have it available inside http://localhost:8000/admin/