[FIXED] Does django-fsm call save() method after state changed?

Issue

I am using django_fsm to manage state in my model. My model looks like:

from django.db import models,
from django_fsm import FSMField, transition


class MyModel(models.Model):
    STATES = (
        ('pending', _('Pending')),
        ('active', _('Active'))
    )  
    state = FSMField(choices=STATES, default='pending', protected=True) 

    @transition(field=state, source='pending', target='active')
    def change_state(self):
        pass

Should I add self.save() to change_state? Will it be called?

Solution

If calling change_state() succeeds without raising an exception, the state field will be changed, but not written to the database.

So for making changes into database you need to call obj.save() explicitly

def change_view(request, model_id):
    obj = get_object__or_404(MyModel, pk=model_id)
    obj.change_state()
    obj.save()
    return redirect('/')

Answered By - Satendra