1 # Redmine - project management software
2 # Copyright (C) 2006-2011 Jean-Philippe Lang
3 #
4 # This program is free software; you can redistribute it and/or
5 # modify it under the terms of the GNU General Public License
6 # as published by the Free Software Foundation; either version 2
7 # of the License, or (at your option) any later version.
8 #
9 # This program is distributed in the hope that it will be useful,
10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 # GNU General Public License for more details.
13 #
14 # You should have received a copy of the GNU General Public License
15 # along with this program; if not, write to the Free Software
16 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
17
18 class Message < ActiveRecord::Base
19 include Redmine::SafeAttributes
20 belongs_to :board
21 belongs_to :author, :class_name => 'User', :foreign_key => 'author_id'
22 acts_as_tree :counter_cache => :replies_count, :order => "#{Message.table_name}.created_on ASC"
23 acts_as_attachable
24 belongs_to :last_reply, :class_name => 'Message', :foreign_key => 'last_reply_id'
25
26 acts_as_searchable :columns => ['subject', 'content'],
27 :include => {:board => :project},
28 :project_key => "#{Board.table_name}.project_id",
29 :date_column => "#{table_name}.created_on"
30 acts_as_event :title => Proc.new {|o| "#{o.board.name}: #{o.subject}"},
31 :description => :content,
32 :type => Proc.new {|o| o.parent_id.nil? ? 'message' : 'reply'},
33 :url => Proc.new {|o| {:controller => 'messages', :action => 'show', :board_id => o.board_id}.merge(o.parent_id.nil? ? {:id => o.id} :
34 {:id => o.parent_id, :r => o.id, :anchor => "message-#{o.id}"})}
35
36 acts_as_activity_provider :find_options => {:include => [{:board => :project}, :author]},
37 :author_key => :author_id
38 acts_as_watchable
39
40 validates_presence_of :board, :subject, :content
41 validates_length_of :subject, :maximum => 255
42 validate :cannot_reply_to_locked_topic, :on => :create
43
44 after_create :add_author_as_watcher, :update_parent_last_reply
45 after_update :update_messages_board
46 after_destroy :reset_board_counters
47
48 named_scope :visible, lambda {|*args| { :include => {:board => :project},
49 :conditions => Project.allowed_to_condition(args.shift || User.current, :view_messages, *args) } }
50
51 safe_attributes 'subject', 'content'
52 safe_attributes 'locked', 'sticky', 'board_id',
53 :if => lambda {|message, user|
54 user.allowed_to?(:edit_messages, message.project)
55 }
56
57 def visible?(user=User.current)
58 !user.nil? && user.allowed_to?(:view_messages, project)
59 end
60
61 def cannot_reply_to_locked_topic
62 # Can not reply to a locked topic
63 errors.add :base, 'Topic is locked' if root.locked? && self != root
64 end
65
66 def update_parent_last_reply
67 if parent
68 parent.reload.update_attribute(:last_reply_id, self.id)
69 end
70 board.reset_counters!
71 end
72
73 def update_messages_board
74 if board_id_changed?
75 Message.update_all("board_id = #{board_id}", ["id = ? OR parent_id = ?", root.id, root.id])
76 Board.reset_counters!(board_id_was)
77 Board.reset_counters!(board_id)
78 end
79 end
80
81 def reset_board_counters
82 board.reset_counters!
83 end
84
85 def sticky=(arg)
86 write_attribute :sticky, (arg == true || arg.to_s == '1' ? 1 : 0)
87 end
88
89 def sticky?
90 sticky == 1
91 end
92
93 def project
94 board.project
95 end
96
97 def editable_by?(usr)
98 usr && usr.logged? && (usr.allowed_to?(:edit_messages, project) || (self.author == usr && usr.allowed_to?(:edit_own_messages, project)))
99 end
100
101 def destroyable_by?(usr)
102 usr && usr.logged? && (usr.allowed_to?(:delete_messages, project) || (self.author == usr && usr.allowed_to?(:delete_own_messages, project)))
103 end
104
105 private
106
107 def add_author_as_watcher
108 Watcher.create(:watchable => self.root, :user => author)
109 end
110 end