cafe-grader-web

Location: cafe-grader-web/app/models/message.rb

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Commit Description:
Implement list_all action for message console
Commit Description:
Implement list_all action for message console
References:
r454:f9a07e801f84 algo
File last commit:
r102:8fbc279e8875 default
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app/models/message.rb | 60 lines | 1.4 KiB | text/x-ruby | RubyLexer |
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class Message < ActiveRecord::Base
belongs_to :sender, :class_name => "User"
belongs_to :receiver, :class_name => "User"
belongs_to :replying_message, :class_name => "Message"
# commented manually do it
#
#has_many :replied_messages, {
# :class_name => "Message",
# :foreign_key => "replying_message_id"
#}
#
attr_accessor :replied_messages
def self.find_all_sent_by_user(user)
messages = user.messages
replied_messages = user.replied_messages
Message.build_replying_message_hierarchy messages, replied_messages
return messages
end
def self.find_all_system_unreplied_messages
self.find(:all,
:conditions => 'ISNULL(receiver_id) ' +
'AND (ISNULL(replied) OR replied=0)',
:order => 'created_at')
end
def self.build_replying_message_hierarchy(*args)
# manually build replies hierarchy (to improve efficiency)
all_messages = {}
args.each do |collection|
collection.each do |m|
all_messages[m.id] = m
m.replied_messages = []
end
end
all_messages.each_value do |m|
rep_id = m.replying_message_id
if all_messages[rep_id]!=nil
all_messages[rep_id].add_replied_message(m)
end
end
end
def add_replied_message(m)
if @replied_messages==nil
@replied_messages = [m]
else
@replied_messages << m
end
@replied_messages
end
end