zulip/zephyr/lib/mention.py

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import re
from django.db.models import F, Q
import zephyr.models
# Match multi-word string between @** ** or match any one-word
# sequences after @
find_mentions = r'(?:\B@(?:\*\*([^\*]+)\*\*)|@(\w+))'
find_mentions_re = re.compile(find_mentions)
wildcards = ['all', 'everyone']
def find_user_for_mention(mention, realm):
if mention in wildcards:
return (True, None)
try:
user = zephyr.models.UserProfile.objects.filter(
Q(full_name__iexact=mention) | Q(short_name__iexact=mention),
realm=realm
)[0]
except IndexError:
user = None
return (False, user)