Files
edx-platform/lms/djangoapps/courseware/date_summary.py
Michael Terry ce5f1bb343 feat!: drop legacy course home view and related code
This was the "outline tab" view of the course. Preceded by the
course info view, succeeded by the MFE outline tab.

In addition to the course home view itself, this drops related
features:
- Legacy version of Course Goals (MFE has a newer implementation)
- Course home in-course search (MFE has no search)

The old course info view and course about views survive for now.

This also drops a few now-unused feature toggles:
- course_experience.latest_update
- course_experience.show_upgrade_msg_on_course_home
- course_experience.upgrade_deadline_message
- course_home.course_home_use_legacy_frontend

With this change, just the progress and courseware tabs are still
supported in legacy form, if you opt-in with waffle flags. The
outline and dates tabs are offered only by the MFE.

AA-798

(This is identical to previous commit be5c1a6, just reintroduced
now that the e2e tests have been fixed)
2022-04-14 15:18:31 -04:00

607 lines
19 KiB
Python

"""
This module provides date summary blocks for the Course Info
page. Each block gives information about a particular
course-run-specific date which will be displayed to the user.
"""
import datetime
import crum
from babel.dates import format_timedelta
from django.conf import settings
from django.utils.functional import cached_property
from django.utils.translation import get_language, to_locale
from django.utils.translation import gettext as _
from django.utils.translation import gettext_lazy
from lazy import lazy
from pytz import utc
from common.djangoapps.course_modes.models import CourseMode
from lms.djangoapps.certificates.api import get_active_web_certificate, can_show_certificate_available_date_field
from lms.djangoapps.courseware.utils import verified_upgrade_deadline_link, can_show_verified_upgrade
from lms.djangoapps.verify_student.models import VerificationDeadline
from lms.djangoapps.verify_student.services import IDVerificationService
from openedx.core.djangolib.markup import HTML
from openedx.features.course_duration_limits.access import get_user_course_expiration_date
from openedx.features.course_experience import RELATIVE_DATES_FLAG
from common.djangoapps.student.models import CourseEnrollment
from .context_processor import user_timezone_locale_prefs
class DateSummary:
"""Base class for all date summary blocks."""
# A consistent representation of the current time.
_current_time = None
@property
def current_time(self):
"""
Returns a consistent current time.
"""
if self._current_time is None:
self._current_time = datetime.datetime.now(utc)
return self._current_time
@property
def css_class(self):
"""
The CSS class of this summary. Indicates the type of information
this summary block contains, and its urgency.
"""
return ''
@property
def date_type(self):
return 'event'
@property
def title(self):
"""The title of this summary."""
return ''
@property
def title_html(self):
"""The title as html for this summary."""
return ''
@property
def description(self):
"""The detail text displayed by this summary."""
return ''
@property
def extra_info(self):
"""Extra detail to display as a tooltip."""
return None
@property
def date(self):
"""This summary's date."""
return None
@property
def date_format(self):
"""
The format to display this date in. By default, displays like Jan
01, 2015.
"""
return '%b %d, %Y'
@property
def link(self):
"""The location to link to for more information."""
return ''
@property
def link_text(self):
"""The text of the link."""
return ''
def __init__(self, course, user, course_id=None):
self.course = course
self.user = user
self.course_id = course_id or self.course.id
@property
def relative_datestring(self):
"""
Return this block's date in a human-readable format. If the date
is None, returns the empty string.
"""
if self.date is None:
return ''
locale = to_locale(get_language())
delta = self.date - self.current_time
try:
relative_date = format_timedelta(delta, locale=locale)
# Babel doesn't have translations for Esperanto, so we get
# a KeyError when testing translations with
# ?preview-lang=eo. This should not happen with any other
# languages. See https://github.com/python-babel/babel/issues/107
except KeyError:
relative_date = format_timedelta(delta)
date_has_passed = delta.days < 0
# Translators: 'absolute' is a date such as "Jan 01,
# 2020". 'relative' is a fuzzy description of the time until
# 'absolute'. For example, 'absolute' might be "Jan 01, 2020",
# and if today were December 5th, 2020, 'relative' would be "1
# month".
date_format = _("{relative} ago - {absolute}") if date_has_passed else _("in {relative} - {absolute}") # lint-amnesty, pylint: disable=redefined-outer-name
return date_format.format(
relative=relative_date,
absolute='{date}',
)
@lazy
def is_allowed(self):
"""
Whether or not this summary block is applicable or active for its course.
For example, a DateSummary might only make sense for a self-paced course, and
you could restrict it here.
You should not make time-sensitive checks here. That sort of thing belongs in
is_enabled.
"""
return True
@property
def is_enabled(self):
"""
Whether or not this summary block should be shown.
By default, the summary is only shown if its date is in the
future.
"""
return (
self.date is not None and
self.current_time.date() <= self.date.date()
)
def deadline_has_passed(self):
"""
Return True if a deadline (the date) exists, and has already passed.
Returns False otherwise.
"""
deadline = self.date
return deadline is not None and deadline <= self.current_time
@property
def time_remaining_string(self):
"""
Returns the time remaining as a localized string.
"""
locale = to_locale(get_language())
return format_timedelta(self.date - self.current_time, locale=locale)
def date_html(self, date_format='shortDate'): # lint-amnesty, pylint: disable=redefined-outer-name
"""
Returns a representation of the date as HTML.
Note: this returns a span that will be localized on the client.
"""
user_timezone = user_timezone_locale_prefs(crum.get_current_request())['user_timezone']
return HTML(
'<span class="date localized-datetime" data-format="{date_format}" data-datetime="{date_time}"'
' data-timezone="{user_timezone}" data-language="{user_language}">'
'</span>'
).format(
date_format=date_format,
date_time=self.date,
user_timezone=user_timezone,
user_language=get_language(),
)
@property
def long_date_html(self):
"""
Returns a long representation of the date as HTML.
Note: this returns a span that will be localized on the client.
"""
return self.date_html(date_format='shortDate')
@property
def short_time_html(self):
"""
Returns a short representation of the time as HTML.
Note: this returns a span that will be localized on the client.
"""
return self.date_html(date_format='shortTime')
def __repr__(self):
return 'DateSummary: "{title}" {date} is_enabled={is_enabled}'.format(
title=self.title,
date=self.date,
is_enabled=self.is_enabled
)
class TodaysDate(DateSummary):
"""
Displays today's date.
"""
css_class = 'todays-date'
is_enabled = True
# The date is shown in the title, no need to display it again.
def get_context(self):
context = super().get_context() # lint-amnesty, pylint: disable=no-member, super-with-arguments
context['date'] = ''
return context
@property
def date(self):
return self.current_time
@property
def date_type(self):
return 'todays-date'
@property
def title(self):
return 'current_datetime'
class CourseStartDate(DateSummary):
"""
Displays the start date of the course.
"""
css_class = 'start-date'
@property
def date(self):
if not self.course.self_paced:
return self.course.start
else:
enrollment = CourseEnrollment.get_enrollment(self.user, self.course_id)
return max(enrollment.created, self.course.start) if enrollment else self.course.start
@property
def date_type(self):
return 'course-start-date'
@property
def title(self):
enrollment = CourseEnrollment.get_enrollment(self.user, self.course_id)
if enrollment and self.course.end and enrollment.created > self.course.end:
return gettext_lazy('Enrollment Date')
return gettext_lazy('Course starts')
class CourseEndDate(DateSummary):
"""
Displays the end date of the course.
"""
css_class = 'end-date'
title = gettext_lazy('Course ends')
is_enabled = True
@property
def description(self):
"""
Returns a description for what experience changes a learner encounters when the course end date passes.
Note that this currently contains 4 scenarios:
1. End date is in the future and learner is enrolled in a certificate earning mode
2. End date is in the future and learner is not enrolled at all or not enrolled
in a certificate earning mode
3. End date is in the past
4. End date does not exist (and now neither does the description)
"""
if self.date and self.current_time <= self.date:
mode, is_active = CourseEnrollment.enrollment_mode_for_user(self.user, self.course_id)
if is_active and CourseMode.is_eligible_for_certificate(mode):
return _('After this date, the course will be archived, which means you can review the '
'course content but can no longer participate in graded assignments or work towards earning '
'a certificate.')
else:
return _('After the course ends, the course content will be archived and no longer active.')
elif self.date:
return _('This course is archived, which means you can review course content but it is no longer active.')
else:
return ''
@property
def date(self):
"""
Returns the course end date, if applicable.
For self-paced courses using Personalized Learner Schedules, the end date is only displayed
if it is within 365 days.
"""
if self.course.self_paced and RELATIVE_DATES_FLAG.is_enabled(self.course_id):
one_year = datetime.timedelta(days=365)
if self.course.end and self.course.end < (self.current_time + one_year):
return self.course.end
return None
return self.course.end
@property
def date_type(self):
return 'course-end-date'
class CourseAssignmentDate(DateSummary):
"""
Displays due dates for homework assignments with a link to the homework
assignment if the link is provided.
"""
css_class = 'assignment'
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.assignment_date = None
self.assignment_link = ''
self.assignment_title = None
self.assignment_title_html = None
self.first_component_block_id = None
self.contains_gated_content = False
self.complete = None
self.past_due = None
self._extra_info = None
@property
def date(self):
return self.assignment_date
@date.setter
def date(self, date):
self.assignment_date = date
@property
def date_type(self):
return 'assignment-due-date'
@property
def link(self):
return self.assignment_link
@property
def extra_info(self):
return self._extra_info
@link.setter
def link(self, link):
self.assignment_link = link
@property
def title(self):
return self.assignment_title
@property
def title_html(self):
return self.assignment_title_html
def set_title(self, title, link=None):
""" Used to set the title_html and title properties for the assignment date block """
if link:
self.assignment_title_html = HTML(
'<a href="{assignment_link}">{assignment_title}</a>'
).format(assignment_link=link, assignment_title=title)
self.assignment_title = title
class CourseExpiredDate(DateSummary):
"""
Displays the course expiration date for Audit learners (if enabled)
"""
css_class = 'course-expired'
@property
def date(self):
return get_user_course_expiration_date(self.user, self.course)
@property
def date_type(self):
return 'course-expired-date'
@property
def description(self):
return _('You lose all access to this course, including your progress.')
@property
def title(self):
return _('Audit Access Expires')
@lazy
def is_allowed(self):
return RELATIVE_DATES_FLAG.is_enabled(self.course.id)
class CertificateAvailableDate(DateSummary):
"""
Displays the certificate available date of the course.
"""
css_class = 'certificate-available-date'
title = gettext_lazy('Certificate Available')
@lazy
def is_allowed(self):
return (
can_show_certificate_available_date_field(self.course) and
self.has_certificate_modes and
get_active_web_certificate(self.course)
)
@property
def description(self):
return _('Day certificates will become available for passing verified learners.')
@property
def date(self):
return self.course.certificate_available_date
@property
def date_type(self):
return 'certificate-available-date'
@property
def has_certificate_modes(self):
return any(
mode.slug for mode in CourseMode.modes_for_course(
course_id=self.course.id, include_expired=True
) if mode.slug != CourseMode.AUDIT
)
class VerifiedUpgradeDeadlineDate(DateSummary):
"""
Displays the date before which learners must upgrade to the
Verified track.
"""
css_class = 'verified-upgrade-deadline'
link_text = gettext_lazy('Upgrade to Verified Certificate')
@property
def link(self):
return verified_upgrade_deadline_link(self.user, self.course, self.course_id)
@cached_property
def enrollment(self):
return CourseEnrollment.get_enrollment(self.user, self.course_id)
@lazy
def is_allowed(self):
return can_show_verified_upgrade(self.user, self.enrollment, self.course)
@lazy
def date(self): # lint-amnesty, pylint: disable=invalid-overridden-method
if self.enrollment:
return self.enrollment.upgrade_deadline
else:
return None
@property
def date_type(self):
return 'verified-upgrade-deadline'
@property
def title(self):
dynamic_deadline = self._dynamic_deadline()
if dynamic_deadline is not None:
return _('Upgrade to Verified Certificate')
return _('Verification Upgrade Deadline')
def _dynamic_deadline(self):
if not self.enrollment:
return None
return self.enrollment.dynamic_upgrade_deadline
@property
def description(self):
dynamic_deadline = self._dynamic_deadline()
if dynamic_deadline is not None:
return _('Don\'t miss the opportunity to highlight your new knowledge and skills by earning a verified'
' certificate.')
return _('You are still eligible to upgrade to a Verified Certificate! '
'Pursue it to highlight the knowledge and skills you gain in this course.')
@property
def relative_datestring(self):
dynamic_deadline = self._dynamic_deadline()
if dynamic_deadline is None:
return super().relative_datestring
if self.date is None or self.deadline_has_passed():
return ' '
# Translators: This describes the time by which the user
# should upgrade to the verified track. 'date' will be
# their personalized verified upgrade deadline formatted
# according to their locale.
return _('by {date}')
class VerificationDeadlineDate(DateSummary):
"""
Displays the date by which the user must complete the verification
process.
"""
is_enabled = True
@property
def css_class(self):
base_state = 'verification-deadline'
if self.deadline_has_passed():
return base_state + '-passed'
elif self.must_retry():
return base_state + '-retry'
else:
return base_state + '-upcoming'
@property
def link_text(self):
return self.link_table[self.css_class][0]
@property
def link(self):
return self.link_table[self.css_class][1]
@property
def link_table(self):
"""Maps verification state to a tuple of link text and location."""
return {
'verification-deadline-passed': (_('Learn More'), ''),
'verification-deadline-retry': (
_('Retry Verification'),
IDVerificationService.get_verify_location(),
),
'verification-deadline-upcoming': (
_('Verify My Identity'),
IDVerificationService.get_verify_location(self.course_id),
)
}
@property
def title(self):
if self.deadline_has_passed():
return _('Missed Verification Deadline')
return _('Verification Deadline')
@property
def description(self):
if self.deadline_has_passed():
return _(
"Unfortunately you missed this course's deadline for"
" a successful verification."
)
return _(
"You must successfully complete verification before"
" this date to qualify for a Verified Certificate."
)
@lazy
def date(self): # lint-amnesty, pylint: disable=invalid-overridden-method
return VerificationDeadline.deadline_for_course(self.course_id)
@property
def date_type(self):
return 'verification-deadline-date'
@lazy
def is_allowed(self):
mode, is_active = CourseEnrollment.enrollment_mode_for_user(self.user, self.course_id)
return (
is_active and
mode == 'verified' and
self.verification_status in ('expired', 'none', 'must_reverify') and
not settings.FEATURES.get('ENABLE_INTEGRITY_SIGNATURE')
)
@lazy
def verification_status(self):
"""Return the verification status for this user."""
verification_status = IDVerificationService.user_status(self.user)
return verification_status['status']
def must_retry(self):
"""Return True if the user must re-submit verification, False otherwise."""
return self.verification_status == 'must_reverify'