73 lines
2.2 KiB
Ruby
73 lines
2.2 KiB
Ruby
#
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# Copyright (C) 2011 Instructure, Inc.
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#
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# This file is part of Canvas.
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#
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# Canvas is free software: you can redistribute it and/or modify it under
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# the terms of the GNU Affero General Public License as published by the Free
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# Software Foundation, version 3 of the License.
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#
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# Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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# A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
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# details.
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#
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# You should have received a copy of the GNU Affero General Public License along
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# with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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class Hashtag < ActiveRecord::Base
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has_many :short_message_associations, :as => :context
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has_many :short_messages, :through => :short_message_associations
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attr_accessible :hashtag
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before_save :infer_defaults
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def infer_defaults
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self.refresh_at ||= Time.now.utc
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end
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protected :infer_defaults
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def user_contexts
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res = {}
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contexts.each do |context|
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context.users.each do |user|
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res[user.id] ||= []
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res[user.id] << context
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end
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end
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res
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end
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def contexts
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Group.with_hashtag(self.hashtag) + Course.with_hashtag(self.hashtag)
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end
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def add_short_message(user, result, public=false)
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message = ShortMessage.find_by_service_message_id_and_service(result["id"], 'twitter')
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user ||= UserService.find_by_service_user_name_and_service(result["from_user"], "twitter").user rescue nil
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message ||= ShortMessage.create(
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:service_message_id => result["id"],
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:service => "twitter",
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:user => user,
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:message => result["text"],
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:created_at => Time.parse(result["created_at"]),
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:service_user_name => result["from_user"]
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)
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message.is_public ||= public
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message.save
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self.short_message_associations.find_or_create_by_short_message_id(message.id) if public
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contexts = user_contexts[user.id] if user
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contexts ||= []
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contexts.each do |context|
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context.short_message_associations.find_or_create_by_short_message_id(message.id)
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end
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end
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named_scope :to_be_polled, lambda {
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{ :conditions => ['hashtags.refresh_at <= ?', Time.now ], :order => :refresh_at, :limit => 1 }
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}
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end
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