python - Change models with function in Django -

my app has few buttons on page. buttons make ajax call , start function in views.py. function runs , returns data user. want function run , make changes objects in model. how do this?

models.py

class stream(models.model):     step = models.integerfield(default=0)     ... 

thanks

refer django app tutorial. can create or modify model objects given below

from myapp.models import stream  #to create object stream.objects.create(                         city = 'chennai',                         ...                      )  #to single object unique value stream.objects.get(id = 1)  #to update retrieved object some_variable = stream.objects.get(id = 1) some_variable.city = 'chennai' some_variable.save()  #to filter objects given value stream.objects.filter(city = 'chennai')  #to update filtered objects stream.objects.filter(city = 'chennai').update(country = 'india')