def renew_book_librarian(request, pk):
"""View function for renewing a specific BookInstance by librarian."""
book_instance = get_object_or_404(BookInstance, pk=pk)
# If this is a POST request then process the Form data
if request.method == 'POST':
# Create a form instance and populate it with data from the request (binding):
form = RenewBookForm(request.POST)
# Check if the form is valid:
if form.is_valid():
# process the data in form.cleaned_data as required (here we just write it to the model due_back field)
book_instance.due_back = form.cleaned_data['renewal_date']
book_instance.save()
# redirect to a new URL:
return HttpResponseRedirect(reverse('all-borrowed'))
# If this is a GET (or any other method) create the default form
else:
proposed_renewal_date = datetime.date.today() + datetime.timedelta(
weeks=3)
form = RenewBookForm(initial={'renewal_date': proposed_renewal_date})
context = {
'form': form,
'book_instance': book_instance,
}
return render(request, 'binder/book_renew_librarian.html', context)
def test_renew_form_date_field_help_text(self):
"""Test renewal_date help_text is as expected."""
form = RenewBookForm()
self.assertEqual(
form.fields['renewal_date'].help_text,
'Enter a date between now and 4 weeks (default 3).')
def test_renew_form_date_field_label(self):
"""Test renewal_date label is 'renewal date'."""
form = RenewBookForm()
self.assertTrue(
form.fields['renewal_date'].label is None or
form.fields['renewal_date'].label == 'renewal date')
def test_renew_form_date_max(self):
"""Test form is valid if renewal_date is within 4 weeks."""
date = datetime.date.today() + datetime.timedelta(weeks=4)
form = RenewBookForm(data={'renewal_date': date})
self.assertTrue(form.is_valid())
def test_renew_form_date_today(self):
"""Test form is valid if renewal_date is today."""
date = datetime.date.today()
form = RenewBookForm(data={'renewal_date': date})
self.assertTrue(form.is_valid())
def test_renew_form_date_too_far_in_future(self):
"""Test form is invalid if renewal_date more than 4 weeks from today."""
date = datetime.date.today() + datetime.timedelta(weeks=4) + datetime.timedelta(days=1)
form = RenewBookForm(data={'renewal_date': date})
self.assertFalse(form.is_valid())
def test_renew_form_date_in_past(self):
"""Test form is invalid if renewal_date is before today."""
date = datetime.date.today() - datetime.timedelta(days=1)
form = RenewBookForm(data={'renewal_date': date})
self.assertFalse(form.is_valid())