def list_presentations_for_course(self, course_identifier, all=False):
"""List all presentations for a given course
:param course_identifier: ID of the course
:param all: (optional) list ALL presentations, by default only
presentations that start in the future
:return list of presentations
"""
q = {'fq': 'course_identifier:{id}'.format(id=course_identifier),
'sort': 'presentation_start asc'}
if all:
q['q'] = '*:*'
else:
q['q'] = 'NOT presentation_start:[* TO NOW]'
results = searcher.search(q, start=0, count=1000) # Do not paginate
if results.results:
course = presentations_to_course_object(results.results)
reference = course.presentations[0]
# "augmenting" our results with "live" information from providers
try:
provider = self.get_provider(reference)
except ProviderException:
logger.debug('No single provider found for: %s'
% reference.id)
else:
provider_information = provider.get_course(reference)
if provider_information:
pass
# TODO augment data // or replace?
else:
return None
def search_courses(self, search, start, count, all=False):
"""Search for courses
:param search: search query (FTS)
:param all: (optional) all courses even starting in the past
:return list of courses (titles and identifiers)
"""
# TODO search parameters for Solr. Should be made generic. Discuss.
q = {'q': search,
'group': 'true',
'group.field': 'course_identifier',
'group.count': '1',
'group.ngroups': 'true',
# 'fl': 'course_title,course_identifier,course_description',
}
if not all:
q['q'] += ' AND NOT presentation_start:[* TO NOW]'
try:
results = searcher.search(q, start=start, count=count)
except SearchServerException:
raise ApplicationException()
courses = []
for group in results.as_dict['grouped']['course_identifier']['groups']:
courses.append(presentations_to_course_object(group['doclist']['docs']))
return courses, results.as_dict['grouped']['course_identifier']['ngroups']