old_contents: from __future__ import absolute_import
  from django.utils.translation import ugettext as _
  from django.http import HttpRequest, HttpResponse
  from django.utils.translation import ugettext as _
  from zerver.lib.actions import check_send_message, create_stream_if_needed
  from zerver.lib.response import json_success, json_error
  from zerver.lib.validator import check_string, check_int
  from zerver.decorator import REQ, has_request_variables, api_key_only_webhook_view
  from zerver.models import UserProfile
  
  ZULIP_MESSAGE_TEMPLATE = "**{message_sender}**: `{text}`"
  VALID_OPTIONS = {'SHOULD_NOT_BE_MAPPED': '0', 'SHOULD_BE_MAPPED': '1'}
  
  @api_key_only_webhook_view('Slack')
  @has_request_variables
  def api_slack_webhook(request, user_profile,
                        user_name=REQ(),
                        text=REQ(),
                        channel_name=REQ(),
                        stream=REQ(default='slack'),
                        channels_map_to_topics=REQ(default='1')):
      # type: (HttpRequest, UserProfile, str, str, str, str, str) -> HttpResponse
  
      if channels_map_to_topics not in list(VALID_OPTIONS.values()):
          return json_error(_('Error: channels_map_to_topics parameter other than 0 or 1'))
  
      if channels_map_to_topics == VALID_OPTIONS['SHOULD_BE_MAPPED']:
          subject = "channel: {}".format(channel_name)
      else:
          stream = channel_name
          subject = _("Message from Slack")
  
      content = ZULIP_MESSAGE_TEMPLATE.format(message_sender=user_name, text=text)
      check_send_message(user_profile, request.client, "stream", [stream], subject, content)
      return json_success()
  
new_contents: from __future__ import absolute_import
  from django.utils.translation import ugettext as _
  from django.http import HttpRequest, HttpResponse
  from django.utils.translation import ugettext as _
  from zerver.lib.actions import check_send_message, create_stream_if_needed
  from zerver.lib.response import json_success, json_error
  from zerver.lib.validator import check_string, check_int
  from zerver.decorator import REQ, has_request_variables, api_key_only_webhook_view
  from zerver.models import UserProfile
  
  ZULIP_MESSAGE_TEMPLATE = u"**{message_sender}**: `{text}`"
  VALID_OPTIONS = {'SHOULD_NOT_BE_MAPPED': '0', 'SHOULD_BE_MAPPED': '1'}
  
  @api_key_only_webhook_view('Slack')
  @has_request_variables
  def api_slack_webhook(request, user_profile,
                        user_name=REQ(),
                        text=REQ(),
                        channel_name=REQ(),
                        stream=REQ(default='slack'),
                        channels_map_to_topics=REQ(default='1')):
      # type: (HttpRequest, UserProfile, str, str, str, str, str) -> HttpResponse
  
      if channels_map_to_topics not in list(VALID_OPTIONS.values()):
          return json_error(_('Error: channels_map_to_topics parameter other than 0 or 1'))
  
      if channels_map_to_topics == VALID_OPTIONS['SHOULD_BE_MAPPED']:
          subject = "channel: {}".format(channel_name)
      else:
          stream = channel_name
          subject = _("Message from Slack")
  
      content = ZULIP_MESSAGE_TEMPLATE.format(message_sender=user_name, text=text)
      check_send_message(user_profile, request.client, "stream", [stream], subject, content)
      return json_success()
  
subject: Support unicode.