Django: Update one data from Database-CodePudding

I have two html files for attendance_in and out, just a simple forms. If I want to punch in, the data was created (begin_time). I'm having a hard time updating the end_time. This is my code.

models.py

class Attendance(models.Model):
    begin_time = models.TimeField(verbose_name="in")
    end_time = models.TimeField(verbose_name="out")

views.py

def attendance_in(request):
    if request.method == 'GET':
        return render(request, 'attendance_in.html')
    if request.method =='POST':
        begin_time = request.POST.get('begin_time')
        Attendance.objects.create(begin_time=begin_time,)
        return redirect('/user/attendance/out')

def attendance_out(request):
    if request.method == 'GET':
        return render(request, 'attendance_out.html')
    if request.method =='POST':
      .......

urls.py

urlpatterns = [
    path('attendance/in/', views.attendance_in),
    path('attendance/out/', views.attendance_out),
]

The attendance_in was working. But I am not sure how to update the end_time.

CodePudding user response：

simply you can do like this:

   record = Record.objects.get(id=1)
   record.name = "new record name"
   record.save(update_fields=['name'])

This is the way you can update single field.

Update field must be inside save() method

CodePudding user response：

You need the id of that attendance object which is created with begin_time so that you can update the end_time of that object.

So the url for attendance out would be something like this.

path('attendance/<int:pk>/out/', views.attendance_out)

Now in the view

def attendance_out(request, pk):
    from django.utils import timezone
    from django.shortcuts import get_object_or_404, redirect 

    attendance = get_object_or_404(Attendance, pk=pk)
    if request.method =='POST':
      attendance.end_time = timezone.now()
      attendance.save()
      return redirect("/")
    return render(request, 'attendance_out.html')