90 lines
2.5 KiB
Ruby
90 lines
2.5 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 InboxItem < ActiveRecord::Base
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include Workflow
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belongs_to :user
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belongs_to :author, :class_name => 'User', :foreign_key => :sender_id
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belongs_to :asset, :polymorphic => true
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before_save :flag_changed
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before_save :infer_context_code
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after_save :update_user_inbox_items_count
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after_destroy :update_user_inbox_items_count
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workflow do
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state :unread
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state :read
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state :deleted
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end
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def infer_context_code
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self.context_code ||= self.asset.context_code rescue nil
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self.context_code ||= self.asset.context.asset_string rescue nil
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end
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def mark_as_read(update_context_message = true)
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update_attribute(:workflow_state, 'read')
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if asset_type == 'ContextMessage' && self.asset && update_context_message
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self.asset.read(self.user)
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end
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end
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def sender_name
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User.cached_name(self.sender_id)
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end
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def context
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Context.find_by_asset_string(self.context_code) rescue nil
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end
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def context_short_name
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return unless self.context_code
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Rails.cache.fetch(['short_name_lookup', self.context_code].cache_key) do
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Context.find_by_asset_string(self.context_code).short_name rescue ""
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end
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end
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def flag_changed
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@item_state_changed = self.new_record? || self.workflow_state_changed?
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true
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end
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def update_user_inbox_items_count
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User.update_all({:unread_inbox_items_count => (self.user.inbox_items.unread.count rescue 0)}, {:id => self.user_id})
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end
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def context_type_plural
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self.context_code.split("_")[0..-2].join("_").pluralize
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end
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def context_id
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self.context_code.split("_").last.to_i rescue nil
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end
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def item_asset_string
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"#{self.asset_type.underscore}_#{self.asset_id}"
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end
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named_scope :active, lambda {
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{:conditions => ['workflow_state != ?', 'deleted']}
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}
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named_scope :unread, lambda {
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{:conditions => ['workflow_state = ?', 'unread']}
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}
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end
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