8ae92901ef
2. Add site configuration overrides to theming/helpers.py 3. Move microsite.get_value from theming/helpers to site_configuration/helpers 4. Move microsite_configuration.microsite.get_value usages to site_configuration.helpers.values
594 lines
27 KiB
Python
594 lines
27 KiB
Python
# pylint: disable=bad-continuation
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"""
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Certificate HTML webview.
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"""
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from datetime import datetime
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from uuid import uuid4
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import logging
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import urllib
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from django.conf import settings
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from django.contrib.auth.models import User
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from django.http import HttpResponse, Http404
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from django.template import RequestContext
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from django.utils.translation import ugettext as _
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from django.utils.encoding import smart_str
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from badges.events.course_complete import get_completion_badge
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from badges.utils import badges_enabled
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from courseware.access import has_access
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from edxmako.shortcuts import render_to_response
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from edxmako.template import Template
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from eventtracking import tracker
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from opaque_keys import InvalidKeyError
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from opaque_keys.edx.keys import CourseKey
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from openedx.core.lib.courses import course_image_url
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from openedx.core.djangoapps.site_configuration import helpers as configuration_helpers
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from student.models import LinkedInAddToProfileConfiguration
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from util import organizations_helpers as organization_api
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from util.views import handle_500
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from xmodule.modulestore.django import modulestore
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from xmodule.modulestore.exceptions import ItemNotFoundError
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from certificates.api import (
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get_active_web_certificate,
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get_certificate_url,
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emit_certificate_event,
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has_html_certificates_enabled,
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get_certificate_template,
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get_certificate_header_context,
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get_certificate_footer_context,
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)
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from certificates.models import (
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GeneratedCertificate,
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CertificateStatuses,
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CertificateHtmlViewConfiguration,
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CertificateSocialNetworks)
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log = logging.getLogger(__name__)
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def get_certificate_description(mode, certificate_type, platform_name):
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"""
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:return certificate_type_description on the basis of current mode
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"""
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certificate_type_description = None
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if mode == 'honor':
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# Translators: This text describes the 'Honor' course certificate type.
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certificate_type_description = _("An {cert_type} certificate signifies that a "
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"learner has agreed to abide by the honor code established by {platform_name} "
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"and has completed all of the required tasks for this course under its "
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"guidelines.").format(cert_type=certificate_type,
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platform_name=platform_name)
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elif mode == 'verified':
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# Translators: This text describes the 'ID Verified' course certificate type, which is a higher level of
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# verification offered by edX. This type of verification is useful for professional education/certifications
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certificate_type_description = _("A {cert_type} certificate signifies that a "
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"learner has agreed to abide by the honor code established by {platform_name} "
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"and has completed all of the required tasks for this course under its "
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"guidelines. A {cert_type} certificate also indicates that the "
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"identity of the learner has been checked and "
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"is valid.").format(cert_type=certificate_type,
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platform_name=platform_name)
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elif mode == 'xseries':
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# Translators: This text describes the 'XSeries' course certificate type. An XSeries is a collection of
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# courses related to each other in a meaningful way, such as a specific topic or theme, or even an organization
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certificate_type_description = _("An {cert_type} certificate demonstrates a high level of "
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"achievement in a program of study, and includes verification of "
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"the student's identity.").format(cert_type=certificate_type)
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return certificate_type_description
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def _update_certificate_context(context, user_certificate, platform_name):
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"""
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Build up the certificate web view context using the provided values
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(Helper method to keep the view clean)
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"""
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# Populate dynamic output values using the course/certificate data loaded above
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certificate_type = context.get('certificate_type')
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# Override the defaults with any mode-specific static values
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context['certificate_id_number'] = user_certificate.verify_uuid
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context['certificate_verify_url'] = "{prefix}{uuid}{suffix}".format(
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prefix=context.get('certificate_verify_url_prefix'),
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uuid=user_certificate.verify_uuid,
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suffix=context.get('certificate_verify_url_suffix')
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)
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# Translators: The format of the date includes the full name of the month
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context['certificate_date_issued'] = _('{month} {day}, {year}').format(
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month=user_certificate.modified_date.strftime("%B"),
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day=user_certificate.modified_date.day,
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year=user_certificate.modified_date.year
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)
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# Translators: This text represents the verification of the certificate
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context['document_meta_description'] = _('This is a valid {platform_name} certificate for {user_name}, '
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'who participated in {partner_short_name} {course_number}').format(
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platform_name=platform_name,
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user_name=context['accomplishment_copy_name'],
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partner_short_name=context['organization_short_name'],
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course_number=context['course_number']
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)
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# Translators: This text is bound to the HTML 'title' element of the page and appears in the browser title bar
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context['document_title'] = _("{partner_short_name} {course_number} Certificate | {platform_name}").format(
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partner_short_name=context['organization_short_name'],
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course_number=context['course_number'],
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platform_name=platform_name
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)
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# Translators: This text fragment appears after the student's name (displayed in a large font) on the certificate
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# screen. The text describes the accomplishment represented by the certificate information displayed to the user
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context['accomplishment_copy_description_full'] = _("successfully completed, received a passing grade, and was "
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"awarded this {platform_name} {certificate_type} "
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"Certificate of Completion in ").format(
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platform_name=platform_name,
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certificate_type=context.get("certificate_type"))
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certificate_type_description = get_certificate_description(user_certificate.mode, certificate_type, platform_name)
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if certificate_type_description:
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context['certificate_type_description'] = certificate_type_description
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# Translators: This text describes the purpose (and therefore, value) of a course certificate
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context['certificate_info_description'] = _("{platform_name} acknowledges achievements through "
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"certificates, which are awarded for course activities "
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"that {platform_name} students complete.").format(
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platform_name=platform_name,
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tos_url=context.get('company_tos_url'),
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verified_cert_url=context.get('company_verified_certificate_url'))
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def _update_context_with_basic_info(context, course_id, platform_name, configuration):
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"""
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Updates context dictionary with basic info required before rendering simplest
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certificate templates.
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"""
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context['platform_name'] = platform_name
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context['course_id'] = course_id
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# Update the view context with the default ConfigurationModel settings
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context.update(configuration.get('default', {}))
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# Translators: 'All rights reserved' is a legal term used in copyrighting to protect published content
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reserved = _("All rights reserved")
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context['copyright_text'] = u'© {year} {platform_name}. {reserved}.'.format(
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year=settings.COPYRIGHT_YEAR,
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platform_name=platform_name,
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reserved=reserved
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)
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# Translators: This text is bound to the HTML 'title' element of the page and appears
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# in the browser title bar when a requested certificate is not found or recognized
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context['document_title'] = _("Invalid Certificate")
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# Translators: The & characters represent an ampersand character and can be ignored
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context['company_tos_urltext'] = _("Terms of Service & Honor Code")
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# Translators: A 'Privacy Policy' is a legal document/statement describing a website's use of personal information
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context['company_privacy_urltext'] = _("Privacy Policy")
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# Translators: This line appears as a byline to a header image and describes the purpose of the page
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context['logo_subtitle'] = _("Certificate Validation")
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# Translators: Accomplishments describe the awards/certifications obtained by students on this platform
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context['accomplishment_copy_about'] = _('About {platform_name} Accomplishments').format(
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platform_name=platform_name
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)
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# Translators: This line appears on the page just before the generation date for the certificate
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context['certificate_date_issued_title'] = _("Issued On:")
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# Translators: The Certificate ID Number is an alphanumeric value unique to each individual certificate
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context['certificate_id_number_title'] = _('Certificate ID Number')
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context['certificate_info_title'] = _('About {platform_name} Certificates').format(
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platform_name=platform_name
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)
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context['certificate_verify_title'] = _("How {platform_name} Validates Student Certificates").format(
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platform_name=platform_name
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)
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# Translators: This text describes the validation mechanism for a certificate file (known as GPG security)
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context['certificate_verify_description'] = _('Certificates issued by {platform_name} are signed by a gpg key so '
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'that they can be validated independently by anyone with the '
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'{platform_name} public key. For independent verification, '
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'{platform_name} uses what is called a '
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'"detached signature""".').format(platform_name=platform_name)
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context['certificate_verify_urltext'] = _("Validate this certificate for yourself")
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# Translators: This text describes (at a high level) the mission and charter the edX platform and organization
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context['company_about_description'] = _("{platform_name} offers interactive online classes and MOOCs.").format(
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platform_name=platform_name)
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context['company_about_title'] = _("About {platform_name}").format(platform_name=platform_name)
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context['company_about_urltext'] = _("Learn more about {platform_name}").format(platform_name=platform_name)
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context['company_courselist_urltext'] = _("Learn with {platform_name}").format(platform_name=platform_name)
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context['company_careers_urltext'] = _("Work at {platform_name}").format(platform_name=platform_name)
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context['company_contact_urltext'] = _("Contact {platform_name}").format(platform_name=platform_name)
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# Translators: This text appears near the top of the certficate and describes the guarantee provided by edX
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context['document_banner'] = _("{platform_name} acknowledges the following student accomplishment").format(
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platform_name=platform_name
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)
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def _update_course_context(request, context, course, platform_name):
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"""
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Updates context dictionary with course info.
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"""
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context['full_course_image_url'] = request.build_absolute_uri(course_image_url(course))
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course_title_from_cert = context['certificate_data'].get('course_title', '')
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accomplishment_copy_course_name = course_title_from_cert if course_title_from_cert else course.display_name
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context['accomplishment_copy_course_name'] = accomplishment_copy_course_name
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course_number = course.display_coursenumber if course.display_coursenumber else course.number
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context['course_number'] = course_number
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if context['organization_long_name']:
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# Translators: This text represents the description of course
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context['accomplishment_copy_course_description'] = _('a course of study offered by {partner_short_name}, '
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'an online learning initiative of '
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'{partner_long_name}.').format(
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partner_short_name=context['organization_short_name'],
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partner_long_name=context['organization_long_name'],
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platform_name=platform_name)
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else:
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# Translators: This text represents the description of course
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context['accomplishment_copy_course_description'] = _('a course of study offered by '
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'{partner_short_name}.').format(
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partner_short_name=context['organization_short_name'],
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platform_name=platform_name)
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def _update_social_context(request, context, course, user, user_certificate, platform_name):
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"""
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Updates context dictionary with info required for social sharing.
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"""
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share_settings = configuration_helpers.get_value("SOCIAL_SHARING_SETTINGS", settings.SOCIAL_SHARING_SETTINGS)
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context['facebook_share_enabled'] = share_settings.get('CERTIFICATE_FACEBOOK', False)
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context['facebook_app_id'] = configuration_helpers.get_value("FACEBOOK_APP_ID", settings.FACEBOOK_APP_ID)
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context['facebook_share_text'] = share_settings.get(
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'CERTIFICATE_FACEBOOK_TEXT',
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_("I completed the {course_title} course on {platform_name}.").format(
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course_title=context['accomplishment_copy_course_name'],
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platform_name=platform_name
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)
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)
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context['twitter_share_enabled'] = share_settings.get('CERTIFICATE_TWITTER', False)
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context['twitter_share_text'] = share_settings.get(
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'CERTIFICATE_TWITTER_TEXT',
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_("I completed a course at {platform_name}. Take a look at my certificate.").format(
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platform_name=platform_name
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)
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)
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share_url = request.build_absolute_uri(get_certificate_url(course_id=course.id, uuid=user_certificate.verify_uuid))
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context['share_url'] = share_url
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twitter_url = ''
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if context.get('twitter_share_enabled', False):
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twitter_url = 'https://twitter.com/intent/tweet?text={twitter_share_text}&url={share_url}'.format(
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twitter_share_text=smart_str(context['twitter_share_text']),
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share_url=urllib.quote_plus(smart_str(share_url))
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)
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context['twitter_url'] = twitter_url
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context['linked_in_url'] = None
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# If enabled, show the LinkedIn "add to profile" button
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# Clicking this button sends the user to LinkedIn where they
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# can add the certificate information to their profile.
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linkedin_config = LinkedInAddToProfileConfiguration.current()
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linkedin_share_enabled = share_settings.get('CERTIFICATE_LINKEDIN', linkedin_config.enabled)
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if linkedin_share_enabled:
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context['linked_in_url'] = linkedin_config.add_to_profile_url(
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course.id,
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course.display_name,
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user_certificate.mode,
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smart_str(share_url)
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)
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def _update_context_with_user_info(context, user, user_certificate):
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"""
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Updates context dictionary with user related info.
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"""
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user_fullname = user.profile.name
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context['username'] = user.username
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context['course_mode'] = user_certificate.mode
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context['accomplishment_user_id'] = user.id
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context['accomplishment_copy_name'] = user_fullname
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context['accomplishment_copy_username'] = user.username
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context['accomplishment_more_title'] = _("More Information About {user_name}'s Certificate:").format(
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user_name=user_fullname
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)
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# Translators: This line is displayed to a user who has completed a course and achieved a certification
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context['accomplishment_banner_opening'] = _("{fullname}, you earned a certificate!").format(
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fullname=user_fullname
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)
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# Translators: This line congratulates the user and instructs them to share their accomplishment on social networks
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context['accomplishment_banner_congrats'] = _("Congratulations! This page summarizes what "
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"you accomplished. Show it off to family, friends, and colleagues "
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"in your social and professional networks.")
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# Translators: This line leads the reader to understand more about the certificate that a student has been awarded
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context['accomplishment_copy_more_about'] = _("More about {fullname}'s accomplishment").format(
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fullname=user_fullname
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)
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def _get_user_certificate(request, user, course_key, course, preview_mode=None):
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"""
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Retrieves user's certificate from db. Creates one in case of preview mode.
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Returns None if there is no certificate generated for given user
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otherwise returns `GeneratedCertificate` instance.
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"""
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user_certificate = None
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if preview_mode:
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# certificate is being previewed from studio
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if has_access(request.user, 'instructor', course) or has_access(request.user, 'staff', course):
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user_certificate = GeneratedCertificate(
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mode=preview_mode,
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verify_uuid=unicode(uuid4().hex),
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modified_date=datetime.now().date()
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)
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else:
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# certificate is being viewed by learner or public
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try:
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user_certificate = GeneratedCertificate.eligible_certificates.get(
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user=user,
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course_id=course_key,
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status=CertificateStatuses.downloadable
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)
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except GeneratedCertificate.DoesNotExist:
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pass
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return user_certificate
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def _track_certificate_events(request, context, course, user, user_certificate):
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"""
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Tracks web certificate view related events.
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"""
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# Badge Request Event Tracking Logic
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course_key = course.location.course_key
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if 'evidence_visit' in request.GET:
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badge_class = get_completion_badge(course_key, user)
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if not badge_class:
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log.warning('Visit to evidence URL for badge, but badges not configured for course "%s"', course_key)
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badges = []
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else:
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badges = badge_class.get_for_user(user)
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if badges:
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# There should only ever be one of these.
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badge = badges[0]
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tracker.emit(
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'edx.badge.assertion.evidence_visited',
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{
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'badge_name': badge.badge_class.display_name,
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'badge_slug': badge.badge_class.slug,
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'badge_generator': badge.backend,
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'issuing_component': badge.badge_class.issuing_component,
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'user_id': user.id,
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'course_id': unicode(course_key),
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'enrollment_mode': badge.badge_class.mode,
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'assertion_id': badge.id,
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'assertion_image_url': badge.image_url,
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'assertion_json_url': badge.assertion_url,
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'issuer': badge.data.get('issuer'),
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}
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)
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else:
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log.warn(
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"Could not find badge for %s on course %s.",
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user.id,
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course_key,
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)
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# track certificate evidence_visited event for analytics when certificate_user and accessing_user are different
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if request.user and request.user.id != user.id:
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emit_certificate_event('evidence_visited', user, unicode(course.id), course, {
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'certificate_id': user_certificate.verify_uuid,
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'enrollment_mode': user_certificate.mode,
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'social_network': CertificateSocialNetworks.linkedin
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})
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def _render_certificate_template(request, context, course, user_certificate):
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"""
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Picks appropriate certificate templates and renders it.
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"""
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if settings.FEATURES.get('CUSTOM_CERTIFICATE_TEMPLATES_ENABLED', False):
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custom_template = get_certificate_template(course.id, user_certificate.mode)
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if custom_template:
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template = Template(
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custom_template,
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output_encoding='utf-8',
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input_encoding='utf-8',
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default_filters=['decode.utf8'],
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encoding_errors='replace',
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)
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context = RequestContext(request, context)
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return HttpResponse(template.render(context))
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return render_to_response("certificates/valid.html", context)
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def _update_configuration_context(context, configuration):
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"""
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Site Configuration will need to be able to override any hard coded
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content that was put into the context in the
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_update_certificate_context() call above. For example the
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'company_about_description' talks about edX, which we most likely
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do not want to keep in configurations.
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So we need to re-apply any configuration/content that
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we are sourcing from the database. This is somewhat duplicative of
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the code at the beginning of this method, but we
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need the configuration at the top as some error code paths
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require that to be set up early on in the pipeline
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"""
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config_key = configuration_helpers.get_value('domain_prefix')
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config = configuration.get("microsites", {})
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if config_key and config:
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context.update(config.get(config_key, {}))
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def _update_badge_context(context, course, user):
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"""
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Updates context with badge info.
|
|
"""
|
|
badge = None
|
|
if badges_enabled() and course.issue_badges:
|
|
badges = get_completion_badge(course.location.course_key, user).get_for_user(user)
|
|
if badges:
|
|
badge = badges[0]
|
|
context['badge'] = badge
|
|
|
|
|
|
def _update_organization_context(context, course):
|
|
"""
|
|
Updates context with organization related info.
|
|
"""
|
|
partner_long_name, organization_logo = None, None
|
|
partner_short_name = course.display_organization if course.display_organization else course.org
|
|
organizations = organization_api.get_course_organizations(course_id=course.id)
|
|
if organizations:
|
|
#TODO Need to add support for multiple organizations, Currently we are interested in the first one.
|
|
organization = organizations[0]
|
|
partner_long_name = organization.get('name', partner_long_name)
|
|
partner_short_name = organization.get('short_name', partner_short_name)
|
|
organization_logo = organization.get('logo', None)
|
|
|
|
context['organization_long_name'] = partner_long_name
|
|
context['organization_short_name'] = partner_short_name
|
|
context['accomplishment_copy_course_org'] = partner_short_name
|
|
context['organization_logo'] = organization_logo
|
|
|
|
|
|
def render_cert_by_uuid(request, certificate_uuid):
|
|
"""
|
|
This public view generates an HTML representation of the specified certificate
|
|
"""
|
|
try:
|
|
certificate = GeneratedCertificate.eligible_certificates.get(
|
|
verify_uuid=certificate_uuid,
|
|
status=CertificateStatuses.downloadable
|
|
)
|
|
return render_html_view(request, certificate.user.id, unicode(certificate.course_id))
|
|
except GeneratedCertificate.DoesNotExist:
|
|
raise Http404
|
|
|
|
|
|
@handle_500(
|
|
template_path="certificates/server-error.html",
|
|
test_func=lambda request: request.GET.get('preview', None)
|
|
)
|
|
def render_html_view(request, user_id, course_id):
|
|
"""
|
|
This public view generates an HTML representation of the specified user and course
|
|
If a certificate is not available, we display a "Sorry!" screen instead
|
|
"""
|
|
try:
|
|
user_id = int(user_id)
|
|
except ValueError:
|
|
raise Http404
|
|
|
|
preview_mode = request.GET.get('preview', None)
|
|
platform_name = configuration_helpers.get_value("platform_name", settings.PLATFORM_NAME)
|
|
configuration = CertificateHtmlViewConfiguration.get_config()
|
|
# Create the initial view context, bootstrapping with Django settings and passed-in values
|
|
context = {}
|
|
_update_context_with_basic_info(context, course_id, platform_name, configuration)
|
|
invalid_template_path = 'certificates/invalid.html'
|
|
|
|
# Kick the user back to the "Invalid" screen if the feature is disabled
|
|
if not has_html_certificates_enabled(course_id):
|
|
log.info(
|
|
"Invalid cert: HTML certificates disabled for %s. User id: %d",
|
|
course_id,
|
|
user_id,
|
|
)
|
|
return render_to_response(invalid_template_path, context)
|
|
|
|
# Load the course and user objects
|
|
try:
|
|
course_key = CourseKey.from_string(course_id)
|
|
user = User.objects.get(id=user_id)
|
|
course = modulestore().get_course(course_key)
|
|
|
|
# For any other expected exceptions, kick the user back to the "Invalid" screen
|
|
except (InvalidKeyError, ItemNotFoundError, User.DoesNotExist) as exception:
|
|
error_str = (
|
|
"Invalid cert: error finding course %s or user with id "
|
|
"%d. Specific error: %s"
|
|
)
|
|
log.info(error_str, course_id, user_id, str(exception))
|
|
return render_to_response(invalid_template_path, context)
|
|
|
|
# Load user's certificate
|
|
user_certificate = _get_user_certificate(request, user, course_key, course, preview_mode)
|
|
if not user_certificate:
|
|
log.info(
|
|
"Invalid cert: User %d does not have eligible cert for %s.",
|
|
user_id,
|
|
course_id,
|
|
)
|
|
return render_to_response(invalid_template_path, context)
|
|
|
|
# Get the active certificate configuration for this course
|
|
# If we do not have an active certificate, we'll need to send the user to the "Invalid" screen
|
|
# Passing in the 'preview' parameter, if specified, will return a configuration, if defined
|
|
active_configuration = get_active_web_certificate(course, preview_mode)
|
|
if active_configuration is None:
|
|
log.info(
|
|
"Invalid cert: course %s does not have an active configuration. User id: %d",
|
|
course_id,
|
|
user_id,
|
|
)
|
|
return render_to_response(invalid_template_path, context)
|
|
|
|
context['certificate_data'] = active_configuration
|
|
|
|
# Append/Override the existing view context values with any mode-specific ConfigurationModel values
|
|
context.update(configuration.get(user_certificate.mode, {}))
|
|
|
|
# Append organization info
|
|
_update_organization_context(context, course)
|
|
|
|
# Append course info
|
|
_update_course_context(request, context, course, platform_name)
|
|
|
|
# Append user info
|
|
_update_context_with_user_info(context, user, user_certificate)
|
|
|
|
# Append social sharing info
|
|
_update_social_context(request, context, course, user, user_certificate, platform_name)
|
|
|
|
# Append/Override the existing view context values with certificate specific values
|
|
_update_certificate_context(context, user_certificate, platform_name)
|
|
|
|
# Append badge info
|
|
_update_badge_context(context, course, user)
|
|
|
|
# Append site configuration overrides
|
|
_update_configuration_context(context, configuration)
|
|
|
|
# Add certificate header/footer data to current context
|
|
context.update(get_certificate_header_context(is_secure=request.is_secure()))
|
|
context.update(get_certificate_footer_context())
|
|
|
|
# Append/Override the existing view context values with any course-specific static values from Advanced Settings
|
|
context.update(course.cert_html_view_overrides)
|
|
|
|
# Track certificate view events
|
|
_track_certificate_events(request, context, course, user, user_certificate)
|
|
|
|
# FINALLY, render appropriate certificate
|
|
return _render_certificate_template(request, context, course, user_certificate)
|