c124bb95fb
is completely contained within lib/dogfood, and it can be cleanly unplugged from the rest of the code.
359 lines
13 KiB
Python
359 lines
13 KiB
Python
import logging
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import urllib
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import json
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from fs.osfs import OSFS
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from django.conf import settings
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from django.core.context_processors import csrf
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from django.contrib.auth.models import User
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from django.contrib.auth.decorators import login_required
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from django.http import Http404, HttpResponse
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from django.shortcuts import redirect
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from mitxmako.shortcuts import render_to_response, render_to_string
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#from django.views.decorators.csrf import ensure_csrf_cookie
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from django_future.csrf import ensure_csrf_cookie
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from django.views.decorators.cache import cache_control
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from lxml import etree
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from module_render import render_module, make_track_function, I4xSystem, get_state_from_module_object_preload
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from models import StudentModule
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from student.models import UserProfile
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from util.views import accepts
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from multicourse import multicourse_settings
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import courseware.content_parser as content_parser
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import courseware.modules
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import courseware.grades as grades
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log = logging.getLogger("mitx.courseware")
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etree.set_default_parser(etree.XMLParser(dtd_validation=False, load_dtd=False,
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remove_comments = True))
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template_imports={'urllib':urllib}
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@cache_control(no_cache=True, no_store=True, must_revalidate=True)
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def gradebook(request):
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if 'course_admin' not in content_parser.user_groups(request.user):
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raise Http404
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coursename = multicourse_settings.get_coursename_from_request(request)
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student_objects = User.objects.all()[:100]
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student_info = [{'username' :s.username,
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'id' : s.id,
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'email': s.email,
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'grade_info' : grades.grade_sheet(s,coursename),
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'realname' : UserProfile.objects.get(user = s).name
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} for s in student_objects]
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return render_to_response('gradebook.html',{'students':student_info})
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@login_required
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@cache_control(no_cache=True, no_store=True, must_revalidate=True)
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def profile(request, student_id = None):
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''' User profile. Show username, location, etc, as well as grades .
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We need to allow the user to change some of these settings .'''
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if student_id == None:
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student = request.user
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else:
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print content_parser.user_groups(request.user)
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if 'course_admin' not in content_parser.user_groups(request.user):
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raise Http404
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student = User.objects.get( id = int(student_id))
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user_info = UserProfile.objects.get(user=student) # request.user.profile_cache #
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coursename = multicourse_settings.get_coursename_from_request(request)
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context={'name':user_info.name,
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'username':student.username,
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'location':user_info.location,
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'language':user_info.language,
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'email':student.email,
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'format_url_params' : content_parser.format_url_params,
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'csrf':csrf(request)['csrf_token']
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}
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context.update(grades.grade_sheet(student,coursename))
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return render_to_response('profile.html', context)
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def render_accordion(request,course,chapter,section):
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''' Draws navigation bar. Takes current position in accordion as
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parameter. Returns (initialization_javascript, content)'''
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if not course:
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course = "6.002 Spring 2012"
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toc=content_parser.toc_from_xml(content_parser.course_file(request.user,course), chapter, section)
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active_chapter=1
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for i in range(len(toc)):
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if toc[i]['active']:
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active_chapter=i
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context=dict([['active_chapter',active_chapter],
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['toc',toc],
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['course_name',course],
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['format_url_params',content_parser.format_url_params],
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['csrf',csrf(request)['csrf_token']]] + \
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template_imports.items())
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return render_to_string('accordion.html',context)
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@cache_control(no_cache=True, no_store=True, must_revalidate=True)
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def render_section(request, section):
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''' TODO: Consolidate with index
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'''
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user = request.user
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if not settings.COURSEWARE_ENABLED:
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return redirect('/')
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coursename = multicourse_settings.get_coursename_from_request(request)
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try:
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dom = content_parser.section_file(user, section, coursename)
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except:
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log.exception("Unable to parse courseware xml")
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return render_to_response('courseware-error.html', {})
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context = {
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'csrf': csrf(request)['csrf_token'],
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'accordion': render_accordion(request, '', '', '')
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}
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module_ids = dom.xpath("//@id")
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if user.is_authenticated():
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module_object_preload = list(StudentModule.objects.filter(student=user,
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module_id__in=module_ids))
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else:
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module_object_preload = []
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try:
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module = render_module(user, request, dom, module_object_preload)
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except:
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log.exception("Unable to load module")
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context.update({
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'init': '',
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'content': render_to_string("module-error.html", {}),
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})
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return render_to_response('courseware.html', context)
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context.update({
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'init':module.get('init_js', ''),
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'content':module['content'],
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})
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result = render_to_response('courseware.html', context)
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return result
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@ensure_csrf_cookie
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@cache_control(no_cache=True, no_store=True, must_revalidate=True)
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def index(request, course=None, chapter="Using the System", section="Hints",position=None):
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''' Displays courseware accordion, and any associated content.
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Arguments:
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- request : HTTP request
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- course : coursename (str)
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- chapter : chapter name (str)
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- section : section name (str)
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- position : position in module, eg of <sequential> module (str)
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Returns:
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- HTTPresponse
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'''
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user = request.user
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if not settings.COURSEWARE_ENABLED:
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return redirect('/')
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if course==None:
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if not settings.ENABLE_MULTICOURSE:
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course = "6.002 Spring 2012"
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elif 'coursename' in request.session:
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course = request.session['coursename']
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else:
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course = settings.COURSE_DEFAULT
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# Fixes URLs -- we don't get funny encoding characters from spaces
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# so they remain readable
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## TODO: Properly replace underscores
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course=course.replace("_"," ")
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chapter=chapter.replace("_"," ")
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section=section.replace("_"," ")
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# use multicourse module to determine if "course" is valid
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#if course!=settings.COURSE_NAME.replace('_',' '):
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if not multicourse_settings.is_valid_course(course):
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return redirect('/')
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request.session['coursename'] = course # keep track of current course being viewed in django's request.session
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try:
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# this is the course.xml etree
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dom = content_parser.course_file(user,course) # also pass course to it, for course-specific XML path
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except:
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log.exception("Unable to parse courseware xml")
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return render_to_response('courseware-error.html', {})
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# this is the module's parent's etree
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dom_module = dom.xpath("//course[@name=$course]/chapter[@name=$chapter]//section[@name=$section]/*[1]",
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course=course, chapter=chapter, section=section)
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if len(dom_module) == 0:
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module = None
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else:
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# this is the module's etree
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module = dom_module[0]
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module_ids = dom.xpath("//course[@name=$course]/chapter[@name=$chapter]//section[@name=$section]//@id",
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course=course, chapter=chapter, section=section)
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if user.is_authenticated():
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module_object_preload = list(StudentModule.objects.filter(student=user,
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module_id__in=module_ids))
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else:
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module_object_preload = []
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context = {
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'csrf': csrf(request)['csrf_token'],
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'accordion': render_accordion(request, course, chapter, section),
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'COURSE_TITLE':multicourse_settings.get_course_title(course),
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}
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try:
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module_context = render_module(user, request, module, module_object_preload, position)
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except:
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log.exception("Unable to load module")
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context.update({
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'init': '',
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'content': render_to_string("module-error.html", {}),
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})
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return render_to_response('courseware.html', context)
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context.update({
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'init': module_context.get('init_js', ''),
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'content': module_context['content'],
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})
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result = render_to_response('courseware.html', context)
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return result
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def modx_dispatch(request, module=None, dispatch=None, id=None):
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''' Generic view for extensions. This is where AJAX calls go.'''
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if not request.user.is_authenticated():
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return redirect('/')
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# Grab the student information for the module from the database
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s = StudentModule.objects.filter(student=request.user,
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module_id=id)
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#s = StudentModule.get_with_caching(request.user, id)
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if len(s) == 0 or s is None:
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log.debug("Couldnt find module for user and id " + str(module) + " " + str(request.user) + " "+ str(id))
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raise Http404
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s = s[0]
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oldgrade = s.grade
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oldstate = s.state
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dispatch=dispatch.split('?')[0]
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ajax_url = settings.MITX_ROOT_URL + '/modx/'+module+'/'+id+'/'
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# get coursename if stored
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coursename = multicourse_settings.get_coursename_from_request(request)
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if coursename and settings.ENABLE_MULTICOURSE:
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xp = multicourse_settings.get_course_xmlpath(coursename) # path to XML for the course
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data_root = settings.DATA_DIR + xp
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else:
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data_root = settings.DATA_DIR
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# Grab the XML corresponding to the request from course.xml
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try:
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xml = content_parser.module_xml(request.user, module, 'id', id, coursename)
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except:
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log.exception("Unable to load module during ajax call")
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if accepts(request, 'text/html'):
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return render_to_response("module-error.html", {})
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else:
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response = HttpResponse(json.dumps({'success': "We're sorry, this module is temporarily unavailable. Our staff is working to fix it as soon as possible"}))
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return response
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# Create the module
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system = I4xSystem(track_function = make_track_function(request),
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render_function = None,
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ajax_url = ajax_url,
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filestore = OSFS(data_root),
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)
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try:
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instance=courseware.modules.get_module_class(module)(system,
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xml,
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id,
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state=oldstate)
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except:
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log.exception("Unable to load module instance during ajax call")
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log.exception('module=%s, dispatch=%s, id=%s' % (module,dispatch,id))
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# log.exception('xml = %s' % xml)
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if accepts(request, 'text/html'):
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return render_to_response("module-error.html", {})
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else:
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response = HttpResponse(json.dumps({'success': "We're sorry, this module is temporarily unavailable. Our staff is working to fix it as soon as possible"}))
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return response
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# Let the module handle the AJAX
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ajax_return=instance.handle_ajax(dispatch, request.POST)
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# Save the state back to the database
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s.state=instance.get_state()
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if instance.get_score():
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s.grade=instance.get_score()['score']
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if s.grade != oldgrade or s.state != oldstate:
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s.save()
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# Return whatever the module wanted to return to the client/caller
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return HttpResponse(ajax_return)
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def jump_to(request, probname=None):
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'''
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Jump to viewing a specific problem. The problem is specified by a problem name - currently the filename (minus .xml)
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of the problem. Maybe this should change to a more generic tag, eg "name" given as an attribute in <problem>.
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We do the jump by (1) reading course.xml to find the first instance of <problem> with the given filename, then
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(2) finding the parent element of the problem, then (3) rendering that parent element with a specific computed position
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value (if it is <sequential>).
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'''
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# get coursename if stored
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coursename = multicourse_settings.get_coursename_from_request(request)
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# begin by getting course.xml tree
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xml = content_parser.course_file(request.user,coursename)
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# look for problem of given name
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pxml = xml.xpath('//problem[@filename="%s"]' % probname)
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if pxml: pxml = pxml[0]
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# get the parent element
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parent = pxml.getparent()
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# figure out chapter and section names
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chapter = None
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section = None
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branch = parent
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for k in range(4): # max depth of recursion
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if branch.tag=='section': section = branch.get('name')
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if branch.tag=='chapter': chapter = branch.get('name')
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branch = branch.getparent()
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position = None
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if parent.tag=='sequential':
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position = parent.index(pxml)+1 # position in sequence
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return index(request,course=coursename,chapter=chapter,section=section,position=position)
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