[Django]-Django-orm : How to update one-to-one relation field value

In both the approach, you are trying to update the Area object and not the AreaPoint object.

Here is how you could do it using both approaches:

1st Approach: using update method:

# here is what you are doing:
Area.objects.filter(id=304).update(area_name="today is 1",
                                   description="today is 1",
                                   areapoint__x_axis=111,
                                   areapoint__y_axis=222)

Above will return an object of Area and since there are no fields areapoint__x_axis etc. it throws error.

What you could do is filter on AreaPoint instead and update it:

AreaPoint.objects.filter(area_id=304).update(x_axis=111, y_axis=222)

2nd Approach:

obj = Area.objects.get(id=304)
obj.areapoint.x_axis = 100
obj.areapoint.y_axis = 200 

# save obj.areapoint instead
obj.areapoint.save()

3rd Approach:

areapoint = AreaPoint.objects.get(area_id=304)
areapoint.x_axis = 100
areapoint.y_axis = 200
areapoint.save()