137 lines
5.5 KiB
Python
137 lines
5.5 KiB
Python
"""
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Views for the course_mode module
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"""
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import decimal
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from django.core.urlresolvers import reverse
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from django.http import (
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HttpResponseBadRequest, Http404
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)
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from django.shortcuts import redirect
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from django.views.generic.base import View
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from django.utils.translation import ugettext as _
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from django.contrib.auth.decorators import login_required
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from django.utils.decorators import method_decorator
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from mitxmako.shortcuts import render_to_response
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from course_modes.models import CourseMode
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from courseware.access import has_access
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from student.models import CourseEnrollment
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from student.views import course_from_id
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from verify_student.models import SoftwareSecurePhotoVerification
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class ChooseModeView(View):
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"""
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View used when the user is asked to pick a mode
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When a get request is used, shows the selection page.
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When a post request is used, assumes that it is a form submission
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from the selection page, parses the response, and then sends user
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to the next step in the flow
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"""
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@method_decorator(login_required)
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def get(self, request, course_id, error=None):
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""" Displays the course mode choice page """
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enrollment_mode = CourseEnrollment.enrollment_mode_for_user(request.user, course_id)
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upgrade = request.GET.get('upgrade', False)
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# verified users do not need to register or upgrade
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if enrollment_mode == 'verified':
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return redirect(reverse('dashboard'))
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# registered users who are not trying to upgrade do not need to re-register
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if enrollment_mode is not None and upgrade is False:
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return redirect(reverse('dashboard'))
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modes = CourseMode.modes_for_course_dict(course_id)
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donation_for_course = request.session.get("donation_for_course", {})
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chosen_price = donation_for_course.get(course_id, None)
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course = course_from_id(course_id)
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context = {
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"course_id": course_id,
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"modes": modes,
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"course_name": course.display_name_with_default,
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"course_org": course.display_org_with_default,
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"course_num": course.display_number_with_default,
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"chosen_price": chosen_price,
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"error": error,
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"upgrade": upgrade,
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}
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if "verified" in modes:
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context["suggested_prices"] = [decimal.Decimal(x) for x in modes["verified"].suggested_prices.split(",")]
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context["currency"] = modes["verified"].currency.upper()
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context["min_price"] = modes["verified"].min_price
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return render_to_response("course_modes/choose.html", context)
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@method_decorator(login_required)
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def post(self, request, course_id):
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""" Takes the form submission from the page and parses it """
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user = request.user
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# This is a bit redundant with logic in student.views.change_enrollement,
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# but I don't really have the time to refactor it more nicely and test.
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course = course_from_id(course_id)
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if not has_access(user, course, 'enroll'):
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error_msg = _("Enrollment is closed")
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return self.get(request, course_id, error=error_msg)
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upgrade = request.GET.get('upgrade', False)
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requested_mode = self.get_requested_mode(request.POST)
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allowed_modes = CourseMode.modes_for_course_dict(course_id)
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if requested_mode not in allowed_modes:
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return HttpResponseBadRequest(_("Enrollment mode not supported"))
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if requested_mode in ("audit", "honor"):
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CourseEnrollment.enroll(user, course_id, requested_mode)
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return redirect('dashboard')
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mode_info = allowed_modes[requested_mode]
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if requested_mode == "verified":
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amount = request.POST.get("contribution") or \
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request.POST.get("contribution-other-amt") or 0
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try:
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# validate the amount passed in and force it into two digits
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amount_value = decimal.Decimal(amount).quantize(decimal.Decimal('.01'), rounding=decimal.ROUND_DOWN)
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except decimal.InvalidOperation:
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error_msg = _("Invalid amount selected.")
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return self.get(request, course_id, error=error_msg)
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# Check for minimum pricing
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if amount_value < mode_info.min_price:
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error_msg = _("No selected price or selected price is too low.")
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return self.get(request, course_id, error=error_msg)
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donation_for_course = request.session.get("donation_for_course", {})
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donation_for_course[course_id] = amount_value
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request.session["donation_for_course"] = donation_for_course
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if SoftwareSecurePhotoVerification.user_has_valid_or_pending(request.user):
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return redirect(
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reverse('verify_student_verified',
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kwargs={'course_id': course_id}) + "?upgrade={}".format(upgrade)
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)
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return redirect(
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reverse('verify_student_show_requirements',
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kwargs={'course_id': course_id}) + "?upgrade={}".format(upgrade))
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def get_requested_mode(self, request_dict):
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"""
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Given the request object of `user_choice`, return the
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corresponding course mode slug
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"""
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if 'audit_mode' in request_dict:
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return 'audit'
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if 'certificate_mode' and request_dict.get("honor-code"):
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return 'honor'
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if 'certificate_mode' in request_dict:
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return 'verified'
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