139 lines
5.0 KiB
Python
139 lines
5.0 KiB
Python
"""
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Views related to course tabs
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"""
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from access import has_access
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from util.json_request import expect_json
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from django.http import HttpResponse, HttpResponseBadRequest
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from django.contrib.auth.decorators import login_required
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from django.core.exceptions import PermissionDenied
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from django_future.csrf import ensure_csrf_cookie
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from mitxmako.shortcuts import render_to_response
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from xmodule.modulestore import Location
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from xmodule.modulestore.inheritance import own_metadata
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from xmodule.modulestore.django import modulestore
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from ..utils import get_course_for_item, get_modulestore
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from .access import get_location_and_verify_access
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__all__ = ['edit_tabs', 'reorder_static_tabs', 'static_pages']
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def initialize_course_tabs(course):
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"""
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set up the default tabs
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I've added this because when we add static tabs, the LMS either expects a None for the tabs list or
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at least a list populated with the minimal times
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@TODO: I don't like the fact that the presentation tier is away of these data related constraints, let's find a better
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place for this. Also rather than using a simple list of dictionaries a nice class model would be helpful here
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"""
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# This logic is repeated in xmodule/modulestore/tests/factories.py
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# so if you change anything here, you need to also change it there.
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course.tabs = [{"type": "courseware"},
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{"type": "course_info", "name": "Course Info"},
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{"type": "discussion", "name": "Discussion"},
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{"type": "wiki", "name": "Wiki"},
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{"type": "progress", "name": "Progress"}]
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modulestore('direct').update_metadata(course.location.url(), own_metadata(course))
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@login_required
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@expect_json
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def reorder_static_tabs(request):
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"Order the static tabs in the requested order"
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tabs = request.POST['tabs']
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course = get_course_for_item(tabs[0])
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if not has_access(request.user, course.location):
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raise PermissionDenied()
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# get list of existing static tabs in course
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# make sure they are the same lengths (i.e. the number of passed in tabs equals the number
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# that we know about) otherwise we can drop some!
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existing_static_tabs = [t for t in course.tabs if t['type'] == 'static_tab']
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if len(existing_static_tabs) != len(tabs):
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return HttpResponseBadRequest()
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# load all reference tabs, return BadRequest if we can't find any of them
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tab_items = []
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for tab in tabs:
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item = modulestore('direct').get_item(Location(tab))
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if item is None:
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return HttpResponseBadRequest()
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tab_items.append(item)
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# now just go through the existing course_tabs and re-order the static tabs
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reordered_tabs = []
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static_tab_idx = 0
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for tab in course.tabs:
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if tab['type'] == 'static_tab':
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reordered_tabs.append({'type': 'static_tab',
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'name': tab_items[static_tab_idx].display_name,
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'url_slug': tab_items[static_tab_idx].location.name})
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static_tab_idx += 1
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else:
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reordered_tabs.append(tab)
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# OK, re-assemble the static tabs in the new order
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course.tabs = reordered_tabs
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# Save the data that we've just changed to the underlying
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# MongoKeyValueStore before we update the mongo datastore.
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course.save()
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modulestore('direct').update_metadata(course.location, own_metadata(course))
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return HttpResponse()
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@login_required
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@ensure_csrf_cookie
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def edit_tabs(request, org, course, coursename):
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"Edit tabs"
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location = ['i4x', org, course, 'course', coursename]
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store = get_modulestore(location)
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course_item = store.get_item(location)
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# check that logged in user has permissions to this item
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if not has_access(request.user, location):
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raise PermissionDenied()
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# see tabs have been uninitialized (e.g. supporing courses created before tab support in studio)
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if course_item.tabs is None or len(course_item.tabs) == 0:
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initialize_course_tabs(course_item)
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# first get all static tabs from the tabs list
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# we do this because this is also the order in which items are displayed in the LMS
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static_tabs_refs = [t for t in course_item.tabs if t['type'] == 'static_tab']
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static_tabs = []
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for static_tab_ref in static_tabs_refs:
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static_tab_loc = Location(location)._replace(category='static_tab', name=static_tab_ref['url_slug'])
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static_tabs.append(modulestore('direct').get_item(static_tab_loc))
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components = [
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static_tab.location.url()
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for static_tab
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in static_tabs
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]
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return render_to_response('edit-tabs.html', {
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'context_course': course_item,
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'components': components
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})
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@login_required
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@ensure_csrf_cookie
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def static_pages(request, org, course, coursename):
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"Static pages view"
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location = get_location_and_verify_access(request, org, course, coursename)
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course = modulestore().get_item(location)
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return render_to_response('static-pages.html', {
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'context_course': course,
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})
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