119 lines
4.2 KiB
Python
119 lines
4.2 KiB
Python
"""Helper functions for working with Credentials."""
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from __future__ import unicode_literals
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import logging
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from openedx.core.djangoapps.catalog.utils import get_programs
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from openedx.core.djangoapps.credentials.models import CredentialsApiConfig
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from openedx.core.lib.edx_api_utils import get_edx_api_data
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log = logging.getLogger(__name__)
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def get_user_credentials(user):
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"""Given a user, get credentials earned from the Credentials service.
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Arguments:
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user (User): The user to authenticate as when requesting credentials.
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Returns:
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list of dict, representing credentials returned by the Credentials
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service.
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"""
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credential_configuration = CredentialsApiConfig.current()
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user_query = {'status': 'awarded', 'username': user.username}
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# Bypass caching for staff users, who may be generating credentials and
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# want to see them displayed immediately.
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use_cache = credential_configuration.is_cache_enabled and not user.is_staff
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cache_key = credential_configuration.CACHE_KEY + '.' + user.username if use_cache else None
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credentials = get_edx_api_data(
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credential_configuration, user, 'credentials', querystring=user_query, cache_key=cache_key
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)
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return credentials
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def get_programs_for_credentials(user, programs_credentials):
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""" Given a user and an iterable of credentials, get corresponding programs
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data and return it as a list of dictionaries.
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Arguments:
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user (User): The user to authenticate as for requesting programs.
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programs_credentials (list): List of credentials awarded to the user
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for completion of a program.
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Returns:
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list, containing programs dictionaries.
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"""
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certified_programs = []
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programs = get_programs(user)
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for program in programs:
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for credential in programs_credentials:
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if program['uuid'] == credential['credential']['program_uuid']:
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program['credential_url'] = credential['certificate_url']
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certified_programs.append(program)
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return certified_programs
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def get_user_program_credentials(user):
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"""Given a user, get the list of all program credentials earned and returns
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list of dictionaries containing related programs data.
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Arguments:
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user (User): The user object for getting programs credentials.
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Returns:
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list, containing programs dictionaries.
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"""
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programs_credentials_data = []
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credential_configuration = CredentialsApiConfig.current()
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if not credential_configuration.is_learner_issuance_enabled:
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log.debug('Display of certificates for programs is disabled.')
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return programs_credentials_data
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credentials = get_user_credentials(user)
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if not credentials:
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log.info('No credential earned by the given user.')
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return programs_credentials_data
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programs_credentials = []
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for credential in credentials:
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try:
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if 'program_uuid' in credential['credential']:
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programs_credentials.append(credential)
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except KeyError:
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log.exception('Invalid credential structure: %r', credential)
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if programs_credentials:
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programs_credentials_data = get_programs_for_credentials(user, programs_credentials)
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return programs_credentials_data
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def get_programs_credentials(user):
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"""Return program credentials data required for display.
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Given a user, find all programs for which certificates have been earned
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and return list of dictionaries of required program data.
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Arguments:
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user (User): user object for getting programs credentials.
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Returns:
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list of dict, containing data corresponding to the programs for which
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the user has been awarded a credential.
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"""
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programs_credentials = get_user_program_credentials(user)
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credentials_data = []
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for program in programs_credentials:
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try:
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program_data = {
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'display_name': program['title'],
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'subtitle': program['subtitle'],
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'credential_url': program['credential_url'],
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}
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credentials_data.append(program_data)
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except KeyError:
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log.warning('Program structure is invalid: %r', program)
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return credentials_data
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