def __init__(self,
repo,
course,
flow_id,
ordinal,
participation,
flow_session,
request=None):
FlowContext.__init__(self,
repo,
course,
flow_id,
participation,
flow_session=flow_session)
from course.content import adjust_flow_session_page_data
adjust_flow_session_page_data(repo, flow_session, course.identifier,
self.flow_desc)
if ordinal >= flow_session.page_count:
raise PageOrdinalOutOfRange()
from course.models import FlowPageData
page_data = self.page_data = get_object_or_404(
FlowPageData, flow_session=flow_session, ordinal=ordinal)
from course.content import get_flow_page_desc
try:
self.page_desc = get_flow_page_desc(flow_session, self.flow_desc,
page_data.group_id,
page_data.page_id)
except ObjectDoesNotExist:
self.page_desc = None
self.page = None
self.page_context = None
else:
self.page = instantiate_flow_page_with_ctx(self, page_data)
page_uri = None
if request is not None:
from django.core.urlresolvers import reverse
page_uri = request.build_absolute_uri(
reverse("relate-view_flow_page",
args=(course.identifier, flow_session.id,
ordinal)))
from course.page import PageContext
self.page_context = PageContext(course=self.course,
repo=self.repo,
commit_sha=self.course_commit_sha,
flow_session=flow_session,
page_uri=page_uri)
self._prev_answer_visit = False
def __init__(self, repo, course, flow_id, ordinal, participation,
flow_session):
FlowContext.__init__(self,
repo,
course,
flow_id,
participation,
flow_session=flow_session)
from course.content import adjust_flow_session_page_data
adjust_flow_session_page_data(repo, flow_session, course.identifier,
self.flow_desc, self.course_commit_sha)
if ordinal >= flow_session.page_count:
raise PageOrdinalOutOfRange()
from course.models import FlowPageData
page_data = self.page_data = get_object_or_404(
FlowPageData, flow_session=flow_session, ordinal=ordinal)
from course.content import get_flow_page_desc
try:
self.page_desc = get_flow_page_desc(flow_session, self.flow_desc,
page_data.group_id,
page_data.page_id)
except ObjectDoesNotExist:
self.page_desc = None
self.page = None
self.page_context = None
else:
self.page = instantiate_flow_page_with_ctx(self, page_data)
from course.page import PageContext
self.page_context = PageContext(course=self.course,
repo=self.repo,
commit_sha=self.course_commit_sha,
flow_session=flow_session)
self._prev_answer_visit = False
def page_analytics(pctx, flow_id, group_id, page_id):
if pctx.role not in [
participation_role.teaching_assistant,
participation_role.instructor,
participation_role.observer,
]:
raise PermissionDenied(_("must be at least TA to view analytics"))
flow_desc = get_flow_desc(pctx.repo, pctx.course, flow_id,
pctx.course_commit_sha)
restrict_to_first_attempt = int(
bool(pctx.request.GET.get("restrict_to_first_attempt") == "1"))
is_multiple_submit = is_flow_multiple_submit(flow_desc)
page_cache = PageInstanceCache(pctx.repo, pctx.course, flow_id)
visits = (FlowPageVisit.objects
.filter(
flow_session__course=pctx.course,
flow_session__flow_id=flow_id,
page_data__group_id=group_id,
page_data__page_id=page_id,
is_submitted_answer=True,
))
if connection.features.can_distinct_on_fields:
if restrict_to_first_attempt:
visits = (visits
.distinct("flow_session__participation__id")
.order_by("flow_session__participation__id", "visit_time"))
elif is_multiple_submit:
visits = (visits
.distinct("page_data__id")
.order_by("page_data__id", "-visit_time"))
visits = (visits
.select_related("flow_session")
.select_related("page_data"))
normalized_answer_and_correctness_to_count = {}
title = None
body = None
total_count = 0
graded_count = 0
for visit in visits:
page = page_cache.get_page(group_id, page_id, pctx.course_commit_sha)
from course.page import PageContext
grading_page_context = PageContext(
course=pctx.course,
repo=pctx.repo,
commit_sha=pctx.course_commit_sha,
flow_session=visit.flow_session)
title = page.title(grading_page_context, visit.page_data.data)
body = page.body(grading_page_context, visit.page_data.data)
normalized_answer = page.normalized_answer(
grading_page_context, visit.page_data.data, visit.answer)
answer_feedback = visit.get_most_recent_feedback()
if answer_feedback is not None:
key = (normalized_answer, answer_feedback.correctness)
normalized_answer_and_correctness_to_count[key] = \
normalized_answer_and_correctness_to_count.get(key, 0) + 1
graded_count += 1
else:
key = (normalized_answer, None)
normalized_answer_and_correctness_to_count[key] = \
normalized_answer_and_correctness_to_count.get(key, 0) + 1
total_count += 1
answer_stats = []
for (normalized_answer, correctness), count in \
normalized_answer_and_correctness_to_count.iteritems():
answer_stats.append(
AnswerStats(
normalized_answer=normalized_answer,
correctness=correctness,
count=count,
percentage=safe_div(100 * count, total_count)))
answer_stats = sorted(
answer_stats,
key=lambda astats: astats.percentage,
reverse=True)
return render_course_page(pctx, "course/analytics-page.html", {
"flow_identifier": flow_id,
"group_id": group_id,
"page_id": page_id,
"title": title,
"body": body,
"answer_stats_list": answer_stats,
"restrict_to_first_attempt": restrict_to_first_attempt,
})
def make_page_answer_stats_list(pctx, flow_id, restrict_to_first_attempt):
flow_desc = get_flow_desc(pctx.repo, pctx.course, flow_id,
pctx.course_commit_sha)
is_multiple_submit = is_flow_multiple_submit(flow_desc)
page_cache = PageInstanceCache(pctx.repo, pctx.course, flow_id)
page_info_list = []
for group_desc in flow_desc.groups:
for page_desc in group_desc.pages:
points = 0
graded_count = 0
answer_count = 0
total_count = 0
visits = (FlowPageVisit.objects
.filter(
flow_session__course=pctx.course,
flow_session__flow_id=flow_id,
page_data__group_id=group_desc.id,
page_data__page_id=page_desc.id,
is_submitted_answer=True,
))
if connection.features.can_distinct_on_fields:
if restrict_to_first_attempt:
visits = (visits
.distinct("flow_session__participation__id")
.order_by("flow_session__participation__id",
"visit_time"))
elif is_multiple_submit:
visits = (visits
.distinct("page_data__id")
.order_by("page_data__id", "-visit_time"))
visits = (visits
.select_related("flow_session")
.select_related("page_data"))
answer_expected = False
title = None
for visit in visits:
page = page_cache.get_page(group_desc.id, page_desc.id,
pctx.course_commit_sha)
answer_expected = answer_expected or page.expects_answer()
from course.page import PageContext
grading_page_context = PageContext(
course=pctx.course,
repo=pctx.repo,
commit_sha=pctx.course_commit_sha,
flow_session=visit.flow_session)
title = page.title(grading_page_context, visit.page_data.data)
answer_feedback = visit.get_most_recent_feedback()
if visit.answer is not None:
answer_count += 1
total_count += 1
if (answer_feedback is not None
and answer_feedback.correctness is not None):
if visit.answer is None:
assert answer_feedback.correctness == 0
else:
points += answer_feedback.correctness
graded_count += 1
if not answer_expected:
continue
page_info_list.append(
PageAnswerStats(
group_id=group_desc.id,
page_id=page_desc.id,
title=title,
average_correctness=safe_div(points, graded_count),
average_emptiness=safe_div(
graded_count - answer_count, graded_count),
answer_count=answer_count,
total_count=total_count,
url=reverse(
"relate-page_analytics",
args=(
pctx.course_identifier,
flow_id,
group_desc.id,
page_desc.id,
))))
return page_info_list
def view_page_sandbox(pctx):
# type: (CoursePageContext) -> http.HttpResponse
if not pctx.has_permission(pperm.use_page_sandbox):
raise PermissionDenied()
from course.validation import ValidationError
from relate.utils import dict_to_struct, Struct
import yaml
PAGE_SESSION_KEY = make_sandbox_session_key( # noqa
PAGE_SESSION_KEY_PREFIX, pctx.course.identifier)
ANSWER_DATA_SESSION_KEY = make_sandbox_session_key( # noqa
ANSWER_DATA_SESSION_KEY_PREFIX, pctx.course.identifier)
PAGE_DATA_SESSION_KEY = make_sandbox_session_key( # noqa
PAGE_DATA_SESSION_KEY_PREFIX, pctx.course.identifier)
request = pctx.request
page_source = pctx.request.session.get(PAGE_SESSION_KEY)
page_errors = None
page_warnings = None
is_clear_post = (request.method == "POST" and "clear" in request.POST)
is_clear_response_post = (request.method == "POST"
and "clear_response" in request.POST)
is_preview_post = (request.method == "POST" and "preview" in request.POST)
def make_form(data=None):
# type: (Optional[Text]) -> PageSandboxForm
return PageSandboxForm(page_source, "yaml", request.user.editor_mode,
ugettext("Enter YAML markup for a flow page."),
data)
if is_preview_post:
edit_form = make_form(pctx.request.POST)
new_page_source = None
if edit_form.is_valid():
try:
from pytools.py_codegen import remove_common_indentation
new_page_source = remove_common_indentation(
edit_form.cleaned_data["content"],
require_leading_newline=False)
from course.content import expand_yaml_macros
new_page_source = expand_yaml_macros(pctx.repo,
pctx.course_commit_sha,
new_page_source)
yaml_data = yaml.load(new_page_source) # type: ignore
page_desc = dict_to_struct(yaml_data)
if not isinstance(page_desc, Struct):
raise ValidationError(
"Provided page source code is not "
"a dictionary. Do you need to remove a leading "
"list marker ('-') or some stray indentation?")
from course.validation import validate_flow_page, ValidationContext
vctx = ValidationContext(repo=pctx.repo,
commit_sha=pctx.course_commit_sha)
validate_flow_page(vctx, "sandbox", page_desc)
page_warnings = vctx.warnings
except Exception:
import sys
tp, e, _ = sys.exc_info()
page_errors = (ugettext("Page failed to load/validate") +
": " + "%(err_type)s: %(err_str)s" % {
"err_type": tp.__name__,
"err_str": e
}) # type: ignore
else:
# Yay, it did validate.
request.session[
PAGE_SESSION_KEY] = page_source = new_page_source
del new_page_source
edit_form = make_form(pctx.request.POST)
elif is_clear_post:
page_source = None
pctx.request.session[PAGE_DATA_SESSION_KEY] = None
pctx.request.session[ANSWER_DATA_SESSION_KEY] = None
del pctx.request.session[PAGE_DATA_SESSION_KEY]
del pctx.request.session[ANSWER_DATA_SESSION_KEY]
edit_form = make_form()
elif is_clear_response_post:
page_source = None
pctx.request.session[PAGE_DATA_SESSION_KEY] = None
pctx.request.session[ANSWER_DATA_SESSION_KEY] = None
del pctx.request.session[PAGE_DATA_SESSION_KEY]
del pctx.request.session[ANSWER_DATA_SESSION_KEY]
edit_form = make_form(pctx.request.POST)
else:
edit_form = make_form()
have_valid_page = page_source is not None
if have_valid_page:
yaml_data = yaml.load(page_source) # type: ignore
page_desc = cast(FlowPageDesc, dict_to_struct(yaml_data))
from course.content import instantiate_flow_page
try:
page = instantiate_flow_page("sandbox", pctx.repo, page_desc,
pctx.course_commit_sha)
except Exception:
import sys
tp, e, _ = sys.exc_info()
page_errors = (ugettext("Page failed to load/validate") + ": " +
"%(err_type)s: %(err_str)s" % {
"err_type": tp.__name__,
"err_str": e
}) # type: ignore
have_valid_page = False
if have_valid_page:
page_desc = cast(FlowPageDesc, page_desc)
# Try to recover page_data, answer_data
page_data = get_sandbox_data_for_page(pctx, page_desc,
PAGE_DATA_SESSION_KEY)
answer_data = get_sandbox_data_for_page(pctx, page_desc,
ANSWER_DATA_SESSION_KEY)
from course.models import FlowSession
from course.page import PageContext
page_context = PageContext(
course=pctx.course,
repo=pctx.repo,
commit_sha=pctx.course_commit_sha,
# This helps code pages retrieve the editor pref.
flow_session=FlowSession(course=pctx.course,
participation=pctx.participation),
in_sandbox=True)
if page_data is None:
page_data = page.initialize_page_data(page_context)
pctx.request.session[PAGE_DATA_SESSION_KEY] = (page_desc.type,
page_desc.id,
page_data)
title = page.title(page_context, page_data)
body = page.body(page_context, page_data)
feedback = None
page_form_html = None
if page.expects_answer():
from course.page.base import PageBehavior
page_behavior = PageBehavior(show_correctness=True,
show_answer=True,
may_change_answer=True)
if request.method == "POST" and not is_preview_post:
page_form = page.process_form_post(page_context, page_data,
request.POST, request.FILES,
page_behavior)
if page_form.is_valid():
answer_data = page.answer_data(page_context, page_data,
page_form, request.FILES)
feedback = page.grade(page_context,
page_data,
answer_data,
grade_data=None)
pctx.request.session[ANSWER_DATA_SESSION_KEY] = (
page_desc.type, page_desc.id, answer_data)
else:
try:
page_form = page.make_form(page_context, page_data,
answer_data, page_behavior)
except Exception:
import sys
tp, e, _ = sys.exc_info()
page_errors = (
ugettext("Page failed to load/validate "
"(change page ID to clear faults)") + ": " +
"%(err_type)s: %(err_str)s" % {
"err_type": tp.__name__,
"err_str": e
}) # type: ignore # noqa: E501
have_valid_page = False
page_form = None
if page_form is not None:
page_form.helper.add_input(
Submit("submit", ugettext("Submit answer"), accesskey="g"))
page_form_html = page.form_to_html(pctx.request, page_context,
page_form, answer_data)
correct_answer = page.correct_answer(page_context,
page_data,
answer_data,
grade_data=None)
return render_course_page(
pctx,
"course/sandbox-page.html",
{
"edit_form": edit_form,
"page_errors": page_errors,
"page_warnings": page_warnings,
"form": edit_form, # to placate form.media
"have_valid_page": True,
"title": title,
"body": body,
"page_form_html": page_form_html,
"feedback": feedback,
"correct_answer": correct_answer,
})
else:
return render_course_page(
pctx,
"course/sandbox-page.html",
{
"edit_form": edit_form,
"form": edit_form, # to placate form.media
"have_valid_page": False,
"page_errors": page_errors,
"page_warnings": page_warnings,
})
def view_page_sandbox(pctx):
from relate.utils import dict_to_struct
import yaml
PAGE_SESSION_KEY = "cf_validated_sandbox_page:" + pctx.course.identifier
ANSWER_DATA_SESSION_KEY = "cf_page_sandbox_answer_data:" + pctx.course.identifier
request = pctx.request
page_source = pctx.request.session.get(PAGE_SESSION_KEY)
page_errors = None
is_preview_post = (request.method == "POST" and "preview" in request.POST)
def make_form(data=None):
return SandboxForm(
page_source, "yaml", vim_mode,
"Enter YAML markup for a flow page.",
data)
vim_mode = pctx.request.session.get(CF_SANDBOX_VIM_MODE, False)
if is_preview_post:
edit_form = make_form(pctx.request.POST)
if edit_form.is_valid():
pctx.request.session[CF_SANDBOX_VIM_MODE] = \
vim_mode = edit_form.cleaned_data["vim_mode"]
try:
new_page_source = edit_form.cleaned_data["content"]
page_desc = dict_to_struct(yaml.load(new_page_source))
from course.validation import validate_flow_page, ValidationContext
vctx = ValidationContext(
repo=pctx.repo,
commit_sha=pctx.course_commit_sha)
validate_flow_page(vctx, "sandbox", page_desc)
except:
import sys
tp, e, _ = sys.exc_info()
page_errors = (
"Page failed to load/validate: "
"%s: %s" % (tp.__name__, e))
else:
# Yay, it did validate.
request.session[PAGE_SESSION_KEY] = page_source = new_page_source
del new_page_source
edit_form = make_form(pctx.request.POST)
else:
edit_form = make_form()
have_valid_page = page_source is not None
if have_valid_page:
page_desc = dict_to_struct(yaml.load(page_source))
from course.content import instantiate_flow_page
page = instantiate_flow_page("sandbox", pctx.repo, page_desc,
pctx.course_commit_sha)
page_data = page.make_page_data()
from course.page import PageContext
page_context = PageContext(
course=pctx.course,
repo=pctx.repo,
commit_sha=pctx.course_commit_sha,
flow_session=None)
title = page.title(page_context, page_data)
body = page.body(page_context, page_data)
# {{{ try to recover answer_data
answer_data = None
stored_answer_data_tuple = \
pctx.request.session.get(ANSWER_DATA_SESSION_KEY)
# Session storage uses JSON and may turn tuples into lists.
if (isinstance(stored_answer_data_tuple, (list, tuple))
and len(stored_answer_data_tuple) == 2):
stored_answer_data_page_id, stored_answer_data = \
stored_answer_data_tuple
if stored_answer_data_page_id == page_desc.id:
answer_data = stored_answer_data
# }}}
feedback = None
page_form_html = None
if page.expects_answer():
if request.method == "POST" and not is_preview_post:
page_form = page.post_form(page_context, page_data,
request.POST, request.FILES)
if page_form.is_valid():
answer_data = page.answer_data(page_context, page_data,
page_form, request.FILES)
feedback = page.grade(page_context, page_data, answer_data,
grade_data=None)
pctx.request.session[ANSWER_DATA_SESSION_KEY] = (
page_desc.id, answer_data)
else:
page_form = page.make_form(page_context, page_data,
answer_data, answer_is_final=False)
if page_form is not None:
page_form.helper.add_input(
Submit("submit", "Submit answer", accesskey="g",
css_class="col-lg-offset-2"))
page_form_html = page.form_to_html(
pctx.request, page_context, page_form, answer_data)
correct_answer = page.correct_answer(
page_context, page_data, answer_data,
grade_data=None)
return render_course_page(pctx, "course/sandbox-page.html", {
"edit_form": edit_form,
"page_errors": page_errors,
"form": edit_form, # to placate form.media
"have_valid_page": True,
"title": title,
"body": body,
"page_form_html": page_form_html,
"feedback": feedback,
"correct_answer": correct_answer,
})
else:
return render_course_page(pctx, "course/sandbox-page.html", {
"edit_form": edit_form,
"form": edit_form, # to placate form.media
"have_valid_page": False,
"page_errors": page_errors,
})
def download_all_submissions(pctx, flow_id):
if pctx.role not in [
participation_role.teaching_assistant,
participation_role.instructor,
participation_role.observer,
]:
raise PermissionDenied(
_("must be at least TA to download submissions"))
from course.content import get_flow_desc
flow_desc = get_flow_desc(pctx.repo, pctx.course, flow_id,
pctx.course_commit_sha)
# {{{ find access rules tag
if hasattr(flow_desc, "rules"):
access_rules_tags = getattr(flow_desc.rules, "tags", [])
else:
access_rules_tags = []
ALL_SESSION_TAG = string_concat("<<<", _("ALL"), ">>>") # noqa
session_tag_choices = [(tag, tag) for tag in access_rules_tags] + [
(ALL_SESSION_TAG, string_concat("(", _("ALL"), ")"))
]
# }}}
page_ids = [
"%s/%s" % (group_desc.id, page_desc.id)
for group_desc in flow_desc.groups for page_desc in group_desc.pages
]
request = pctx.request
if request.method == "POST":
form = DownloadAllSubmissionsForm(page_ids, session_tag_choices,
request.POST)
if form.is_valid():
which_attempt = form.cleaned_data["which_attempt"]
slash_index = form.cleaned_data["page_id"].index("/")
group_id = form.cleaned_data["page_id"][:slash_index]
page_id = form.cleaned_data["page_id"][slash_index + 1:]
from course.utils import PageInstanceCache
page_cache = PageInstanceCache(pctx.repo, pctx.course, flow_id)
visits = (
FlowPageVisit.objects.filter(
flow_session__course=pctx.course,
flow_session__flow_id=flow_id,
page_data__group_id=group_id,
page_data__page_id=page_id,
is_submitted_answer=True,
).select_related("flow_session").select_related(
"flow_session__participation__user").select_related(
"page_data")
# We overwrite earlier submissions with later ones
# in a dictionary below.
.order_by("visit_time"))
if form.cleaned_data["non_in_progress_only"]:
visits = visits.filter(flow_session__in_progress=False)
if form.cleaned_data["restrict_to_rules_tag"] != ALL_SESSION_TAG:
visits = visits.filter(flow_session__access_rules_tag=(
form.cleaned_data["restrict_to_rules_tag"]))
submissions = {}
for visit in visits:
page = page_cache.get_page(group_id, page_id,
pctx.course_commit_sha)
from course.page import PageContext
grading_page_context = PageContext(
course=pctx.course,
repo=pctx.repo,
commit_sha=pctx.course_commit_sha,
flow_session=visit.flow_session)
bytes_answer = page.normalized_bytes_answer(
grading_page_context, visit.page_data.data, visit.answer)
if which_attempt in ["first", "last"]:
key = (visit.flow_session.participation.user.username, )
elif which_attempt == "all":
key = (visit.flow_session.participation.user.username,
str(visit.flow_session.id))
else:
raise NotImplementedError()
if bytes_answer is not None:
if (which_attempt == "first" and key in submissions):
# Already there, disregard further ones
continue
submissions[key] = bytes_answer
from six import BytesIO
from zipfile import ZipFile
bio = BytesIO()
with ZipFile(bio, "w") as subm_zip:
for key, (extension, bytes_answer) in \
six.iteritems(submissions):
subm_zip.writestr("-".join(key) + extension, bytes_answer)
extra_file = request.FILES.get("extra_file")
if extra_file is not None:
subm_zip.writestr(extra_file.name, extra_file.read())
response = http.HttpResponse(bio.getvalue(),
content_type="application/zip")
response['Content-Disposition'] = (
'attachment; filename="submissions_%s_%s_%s_%s_%s.zip"' %
(pctx.course.identifier, flow_id, group_id, page_id,
now().date().strftime("%Y-%m-%d")))
return response
else:
form = DownloadAllSubmissionsForm(page_ids, session_tag_choices)
return render_course_page(
pctx, "course/generic-course-form.html", {
"form": form,
"form_description": _("Download All Submissions in Zip file")
})
def view_page_sandbox(pctx):
if pctx.role not in [
participation_role.instructor,
participation_role.teaching_assistant]:
raise PermissionDenied(
ugettext("must be instructor or TA to access sandbox"))
from course.validation import ValidationError
from relate.utils import dict_to_struct, Struct
import yaml
PAGE_SESSION_KEY = ( # noqa
"cf_validated_sandbox_page:" + pctx.course.identifier)
ANSWER_DATA_SESSION_KEY = ( # noqa
"cf_page_sandbox_answer_data:" + pctx.course.identifier)
request = pctx.request
page_source = pctx.request.session.get(PAGE_SESSION_KEY)
page_errors = None
page_warnings = None
is_preview_post = (request.method == "POST" and "preview" in request.POST)
from course.models import get_user_status
ustatus = get_user_status(request.user)
def make_form(data=None):
return SandboxForm(
page_source, "yaml", ustatus.editor_mode,
ugettext("Enter YAML markup for a flow page."),
data)
if is_preview_post:
edit_form = make_form(pctx.request.POST)
if edit_form.is_valid():
try:
new_page_source = edit_form.cleaned_data["content"]
page_desc = dict_to_struct(yaml.load(new_page_source))
if not isinstance(page_desc, Struct):
raise ValidationError("Provided page source code is not "
"a dictionary. Do you need to remove a leading "
"list marker ('-') or some stray indentation?")
from course.validation import validate_flow_page, ValidationContext
vctx = ValidationContext(
repo=pctx.repo,
commit_sha=pctx.course_commit_sha)
validate_flow_page(vctx, "sandbox", page_desc)
page_warnings = vctx.warnings
except:
import sys
tp, e, _ = sys.exc_info()
page_errors = (
ugettext("Page failed to load/validate")
+ ": "
+ "%(err_type)s: %(err_str)s" % {
"err_type": tp.__name__, "err_str": e})
else:
# Yay, it did validate.
request.session[PAGE_SESSION_KEY] = page_source = new_page_source
del new_page_source
edit_form = make_form(pctx.request.POST)
else:
edit_form = make_form()
have_valid_page = page_source is not None
if have_valid_page:
page_desc = dict_to_struct(yaml.load(page_source))
from course.content import instantiate_flow_page
try:
page = instantiate_flow_page("sandbox", pctx.repo, page_desc,
pctx.course_commit_sha)
except:
import sys
tp, e, _ = sys.exc_info()
page_errors = (
ugettext("Page failed to load/validate")
+ ": "
+ "%(err_type)s: %(err_str)s" % {
"err_type": tp.__name__, "err_str": e})
have_valid_page = False
if have_valid_page:
page_data = page.make_page_data()
from course.models import FlowSession
from course.page import PageContext
page_context = PageContext(
course=pctx.course,
repo=pctx.repo,
commit_sha=pctx.course_commit_sha,
# This helps code pages retrieve the editor pref.
flow_session=FlowSession(
course=pctx.course,
participation=pctx.participation),
in_sandbox=True)
title = page.title(page_context, page_data)
body = page.body(page_context, page_data)
# {{{ try to recover answer_data
answer_data = None
stored_answer_data_tuple = \
pctx.request.session.get(ANSWER_DATA_SESSION_KEY)
# Session storage uses JSON and may turn tuples into lists.
if (isinstance(stored_answer_data_tuple, (list, tuple))
and len(stored_answer_data_tuple) == 3):
stored_answer_data_page_type, stored_answer_data_page_id, stored_answer_data = \
stored_answer_data_tuple
if (
stored_answer_data_page_type == page_desc.type
and
stored_answer_data_page_id == page_desc.id):
answer_data = stored_answer_data
# }}}
feedback = None
page_form_html = None
if page.expects_answer():
from course.page.base import PageBehavior
page_behavior = PageBehavior(
show_correctness=True,
show_answer=True,
may_change_answer=True)
if request.method == "POST" and not is_preview_post:
page_form = page.process_form_post(page_context, page_data,
request.POST, request.FILES,
page_behavior)
if page_form.is_valid():
answer_data = page.answer_data(page_context, page_data,
page_form, request.FILES)
feedback = page.grade(page_context, page_data, answer_data,
grade_data=None)
pctx.request.session[ANSWER_DATA_SESSION_KEY] = (
page_desc.type, page_desc.id, answer_data)
else:
page_form = page.make_form(page_context, page_data,
answer_data, page_behavior)
if page_form is not None:
page_form.helper.add_input(
Submit("submit",
ugettext("Submit answer"),
accesskey="g"))
page_form_html = page.form_to_html(
pctx.request, page_context, page_form, answer_data)
correct_answer = page.correct_answer(
page_context, page_data, answer_data,
grade_data=None)
return render_course_page(pctx, "course/sandbox-page.html", {
"edit_form": edit_form,
"page_errors": page_errors,
"page_warnings": page_warnings,
"form": edit_form, # to placate form.media
"have_valid_page": True,
"title": title,
"body": body,
"page_form_html": page_form_html,
"feedback": feedback,
"correct_answer": correct_answer,
})
else:
return render_course_page(pctx, "course/sandbox-page.html", {
"edit_form": edit_form,
"form": edit_form, # to placate form.media
"have_valid_page": False,
"page_errors": page_errors,
"page_warnings": page_warnings,
})