144 lines
4.8 KiB
Python
144 lines
4.8 KiB
Python
"""
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Views for serving static textbooks.
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"""
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from django.contrib.auth.decorators import login_required
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from django.http import Http404
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from mitxmako.shortcuts import render_to_response
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from courseware.access import has_access
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from courseware.courses import get_course_with_access
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from notes.utils import notes_enabled_for_course
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from static_replace import replace_static_urls
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@login_required
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def index(request, course_id, book_index, page=None):
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"""
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Serve static image-based textbooks.
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"""
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course = get_course_with_access(request.user, course_id, 'load')
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staff_access = has_access(request.user, course, 'staff')
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book_index = int(book_index)
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if book_index < 0 or book_index >= len(course.textbooks):
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raise Http404("Invalid book index value: {0}".format(book_index))
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textbook = course.textbooks[book_index]
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table_of_contents = textbook.table_of_contents
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if page is None:
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page = textbook.start_page
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return render_to_response(
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'staticbook.html',
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{
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'book_index': book_index, 'page': int(page),
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'course': course,
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'book_url': textbook.book_url,
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'table_of_contents': table_of_contents,
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'start_page': textbook.start_page,
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'end_page': textbook.end_page,
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'staff_access': staff_access,
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},
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)
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def remap_static_url(original_url, course):
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"""Remap a URL in the ways the course requires."""
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# Ick: this should be possible without having to quote and unquote the URL...
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input_url = "'" + original_url + "'"
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output_url = replace_static_urls(
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input_url,
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getattr(course, 'data_dir', None),
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course_id=course.location.course_id,
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)
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# strip off the quotes again...
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return output_url[1:-1]
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@login_required
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def pdf_index(request, course_id, book_index, chapter=None, page=None):
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"""
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Display a PDF textbook.
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course_id: course for which to display text. The course should have
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"pdf_textbooks" property defined.
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book index: zero-based index of which PDF textbook to display.
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chapter: (optional) one-based index into the chapter array of textbook PDFs to display.
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Defaults to first chapter. Specifying this assumes that there are separate PDFs for
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each chapter in a textbook.
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page: (optional) one-based page number to display within the PDF. Defaults to first page.
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"""
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course = get_course_with_access(request.user, course_id, 'load')
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staff_access = has_access(request.user, course, 'staff')
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book_index = int(book_index)
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if book_index < 0 or book_index >= len(course.pdf_textbooks):
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raise Http404("Invalid book index value: {0}".format(book_index))
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textbook = course.pdf_textbooks[book_index]
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if 'url' in textbook:
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textbook['url'] = remap_static_url(textbook['url'], course)
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# then remap all the chapter URLs as well, if they are provided.
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if 'chapters' in textbook:
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for entry in textbook['chapters']:
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entry['url'] = remap_static_url(entry['url'], course)
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return render_to_response(
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'static_pdfbook.html',
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{
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'book_index': book_index,
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'course': course,
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'textbook': textbook,
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'chapter': chapter,
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'page': page,
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'staff_access': staff_access,
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},
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)
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@login_required
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def html_index(request, course_id, book_index, chapter=None):
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"""
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Display an HTML textbook.
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course_id: course for which to display text. The course should have
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"html_textbooks" property defined.
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book index: zero-based index of which HTML textbook to display.
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chapter: (optional) one-based index into the chapter array of textbook HTML files to display.
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Defaults to first chapter. Specifying this assumes that there are separate HTML files for
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each chapter in a textbook.
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"""
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course = get_course_with_access(request.user, course_id, 'load')
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staff_access = has_access(request.user, course, 'staff')
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notes_enabled = notes_enabled_for_course(course)
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book_index = int(book_index)
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if book_index < 0 or book_index >= len(course.html_textbooks):
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raise Http404("Invalid book index value: {0}".format(book_index))
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textbook = course.html_textbooks[book_index]
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if 'url' in textbook:
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textbook['url'] = remap_static_url(textbook['url'], course)
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# then remap all the chapter URLs as well, if they are provided.
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if 'chapters' in textbook:
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for entry in textbook['chapters']:
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entry['url'] = remap_static_url(entry['url'], course)
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return render_to_response(
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'static_htmlbook.html',
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{
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'book_index': book_index,
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'course': course,
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'textbook': textbook,
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'chapter': chapter,
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'staff_access': staff_access,
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'notes_enabled': notes_enabled,
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},
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)
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