How to use the robotframework.models.Email.objects.all function in robotframework

def delete_recevier_message(request):
    username = request.session.get('user', '')
    emails = Email.objects.all()
    if request.method =="POST":
        email_id = request.POST.get("id")
        Email.objects.filter(email_id=email_id).delete()
    return render(request, "email_add_page.html", {"user": username, "emails": emails})

def edit_recevier_message(request):
    username = request.session.get('user', '')
    emails = Email.objects.all()
    if request.method =="POST":
        id = request.POST.get("id")
        edit_sender_email_site = request.POST.get("edit_sender_email_site")
        edit_recevier_email_sites = request.POST.get("edit_recevier_email_sites")
        edit_email_subject = request.POST.get("edit_email_subject")
        edit_recevier_email_port = request.POST.get("edit_recevier_email_port")
        edit_email_body = request.POST.get("edit_email_body")
        Email.objects.filter(email_id=id).update(sender=edit_sender_email_site, receivers=edit_recevier_email_sites, body=edit_email_body,
                             email_port=edit_recevier_email_port, subject=edit_email_subject)
    return  render(request,"email_add_page.html",{"user": username,"emails": emails})

def add_email_recevier(request):
    username = request.session.get('user', '')
    emails = Email.objects.all()
    if request.method == "POST":
        sender_email_site = request.POST.get("sender_email_site")
        recevier_email_sites = request.POST.get("recevier_email_sites")
        email_subject = request.POST.get("email_subject")
        recevier_email_port = request.POST.get("recevier_email_port")
        email_body = request.POST.get("email_body")
        Email.objects.create(sender=sender_email_site,receivers=recevier_email_sites,body=email_body,email_port=recevier_email_port,subject=email_subject)
    return  render(request,"email_add_page.html",{"user": username,"emails": emails})