django - pass value to foreign key field

One-to-one relationship assignment:

class ModelStudy(View):
     ''' ClassRoom and ClassNumber are one-to-one relationship, pass value to foreign key ''' 
    def get(self, request):
         ''' Two methods ClassRoom and classroom number ClassNumber foreign key field is in The name of the django class (room_number) is in the database name (room_number_id) '''
　　　　　# 1.1 Assign objects to foreign key fields
         # room_number = ClassNumber.objects.filter(class_number__exact='003')[0] # d slices the List 
        # c = ClassRoom() 
        # c.room_number = room_number 
        # c.save() 
        # 1.2 Add data and assign objects to new fields
        room_number = ClassNumber.objects.filter(class_number__exact='003')[0]
        print room_number
        ClassRoom.objects.create(name = " python classroom " , room_number= room_number) # New data 

　　　　　# 2: Get the value of the foreign key field ( the foreign key field name room_number_id of the database ), and assign the corresponding value directly to the foreign key field Key field 
　　　　　class_number = ClassNumber.object.get("id=1").room_number # Get the specific value of classroom number '001' 
　　　　　c = ClassRoom.object.filter(id=1)[0] 
　　　　　c.room_number_id = class_number # Will ' 001'Copy to the database foreign key field The foreign key field name in the django class (room_number) is in the database name (room_number_id)

return HttpResponse("ojbk")