def create_lesson(request, course_slug, page_slug):
'''
Creates a new lesson and shows the user the edit page but
does not save the lesson to the database
@author Matthew Tytel
'''
#enforcing permissions
try:
e = Enrollment.objects.get(course__slug = course_slug, user = request.user)
except Enrollment.DoesNotExist:
return custom_403(request, "User cannot create a lesson in the course because the user is not enrolled in this course")
if not e.edit:
return custom_403(request, "User cannot create a lesson in the course because the user does not have edit permissions on the course")
if request.method == "POST" and "Save" in request.POST:
name = request.POST["lessonname"].strip()
#create a lesson (don't save) this will allow the len < 1 case to
#save the content that the user entered, and display course name
lesson = CreateLesson(name)
lesson.workingCopy = lesson.content = request.POST["content"]
lesson.course = Course.objects.get(slug=course_slug)
if len(name) < 1:
return master_rtr(request, 'page/lesson/edit_lesson.html', \
{'course_slug':course_slug,
'page_slug': page_slug,
'course':course_slug,
'message':'Lesson names must be non-empty',
'lesson':lesson, 'new':True})
if saveNewLesson(request.POST['lessonname'], request.POST['content'], course_slug, page_slug) == 0:
return HttpResponseRedirect(reverse('pages.views.show_page', args=[course_slug, lesson.slug]))
else:
return master_rtr(request, 'page/lesson/edit_lesson.html', \
{'course_slug':course_slug,
'page_slug': page_slug,
'course':course_slug,
'message':'A lesson with that name already exists',
'lesson':lesson, 'new':True})
lesson = CreateLesson('')
return master_rtr(request, 'page/lesson/edit_lesson.html', \
{'course_slug':course_slug, \
'course':course_slug, \
'page_slug':page_slug, \
'pid':lesson.name, 'new':True})
def create_quiz(request, course_slug, page_slug):
'''
create_Quiz View
This view will create a quiz and take the user to the quiz editor screen.
@author John Hartquist
'''
#enforcing permissions
try:
e = Enrollment.objects.get(course__slug = course_slug, user = request.user)
except Enrollment.DoesNotExist:
return custom_403(request, "User cannot create a quiz in the course because the user is not enrolled in this course")
if not e.edit:
return custom_403(request, "User cannot create a quiz in the course because the user does not have edit permissions on the course")
page_slug = safeSlug(page_slug)
if request.method == "POST" and "Create Quiz" in request.POST:
course = Course.objects.get(slug=course_slug)
name = request.POST['name']
if name == "":
return master_rtr(request, 'page/quiz/create-quiz.html', {'message': "You may not enter a blank quiz name"})
#exists = Quiz.objects.get(slug=slugify(name))
try:
exists = Quiz.objects.get(slug=slugify(name), course=course)
return master_rtr(request, 'page/quiz/create-quiz.html', {'message': "Quiz with this name already exists"})
except:
newQuiz = Quiz(course=course, name=name, slug=slugify(name), text=name, upToDate=True)
insertLastChildPage(newQuiz, Page.objects.get(slug=page_slug, course=course))
newQuiz = Quiz.objects.get(slug=newQuiz.slug, course=course)
workingCopy = Quiz(course=newQuiz.course, name=newQuiz.name, slug=(newQuiz.slug + "_workingCopy"), text=newQuiz.name, left=0, right=0)
workingCopy.save()
return HttpResponseRedirect(reverse('pages.views.edit_page', args=[course_slug, newQuiz.slug]))
else:
return master_rtr(request, 'page/quiz/create-quiz.html')
def move_page(request, course_slug, page_slug):
'''
This view allows instructors to move pages around in a course.
@pre request is a Request object, other two args are strings, request.user.is_authenticated()
@author Russell Mezzetta
'''
#check if the course is a real course in the database
data = {}
data['course_slug'] = course_slug
data['page_slug'] = page_slug
try:
data['course'] = Course.objects.get(slug=course_slug)
except Course.DoesNotExist:
return custom_404(request, "BAD URL: The course: %s does not exist" % (course_slug))
#check that user has edit permissions on the course
try:
e = request.user.enrollments.get(course = data['course'])
if not e.edit:
return custom_403(request, "User does not have edit permissions on the course")
except ObjectDoesNotExist:
return custom_403(request, "User is not enrolled in the course")
#check if the page is a real page in the database
try:
data['page'] = Page.objects.get(slug=page_slug)
except Page.DoesNotExist:
return custom_404(request, "ERROR: BAD URL: The course: %s does not contain the page: %s." % (course_slug, page_slug))
#check to make sure that we are not trying to move a course-page
if data['page'].left == 1:
return custom_404(request, "You may not move the home page of a course")
#save a list of all pages in the course EXCEPT the given page and exclude
#ignored page values (left<=0 or right<=0)
data['pagelist'] = data['course'].pages.all().exclude(slug=page_slug).exclude(left__lte=0).exclude(right__lte=0).order_by('left')
if request.method == "POST":
if "referencePageID" in request.POST and "siblingOrChild" in request.POST:
#get the page specified by refPageID from the data['pagelist']
refPage = None
for p in data['pagelist']:
if p.slug == request.POST['referencePageID']:
refPage = p
break
#refPage should never be none....
#if refPage == None:
# return HttpResponse("error, the previously selected page somehow is no longer in the list of pages in this course")
#movePage should be passed lessons or quizzes,
#cast refPage and data['page'] appropriately
p1 = data['page']
try: #to cast to a lesson
p1 = p1.lesson
except Lesson.DoesNotExist:
#try: #to cast to a quiz
p1 = p1.quiz
#except Quiz.DoesNotExist:
# print "warning -- move_page view, page neither quiz nor lesson"
p2 = refPage
try: #to cast to a lesson
p2 = p2.lesson
except Lesson.DoesNotExist:
#try: #to cast to a quiz
p2 = p2.quiz
#except Quiz.DoesNotExist:
#print "warning -- move_page view, page neither quiz nor lesson"
if request.POST['siblingOrChild'] == "sibling":
#move page to be the first sibling of refPage
movePage(p1, p2)
else:
#move the page to be the first child of refPage
movePageToParent(p1, p2)
#after moving the page, redirect them to the edit view of the page
return HttpResponseRedirect(reverse('pages.views.edit_page', args=[p1.course.slug, p1.slug]))
return master_rtr(request, 'page/move_page.html', data)