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Commit Description:
add model solution
Commit Description:
add model solution
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app/models/message.rb
| 58 lines
| 1.3 KiB
| text/x-ruby
| RubyLexer
|
jittat
|
r102 | 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 | ||||
| r456 | ||||
|
jittat
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r102 | def self.find_all_system_unreplied_messages | ||
| r619 | where('ISNULL(receiver_id) ' + | |||
| 'AND (ISNULL(replied) OR replied=0)') | ||||
|
jittat
|
r102 | 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 | ||||