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 Workflow < ActiveRecord::Base
19 belongs_to :role
20 belongs_to :old_status, :class_name => 'IssueStatus', :foreign_key => 'old_status_id'
21 belongs_to :new_status, :class_name => 'IssueStatus', :foreign_key => 'new_status_id'
22
23 validates_presence_of :role, :old_status, :new_status
24
25 # Returns workflow transitions count by tracker and role
26 def self.count_by_tracker_and_role
27 counts = connection.select_all("SELECT role_id, tracker_id, count(id) AS c FROM #{Workflow.table_name} GROUP BY role_id, tracker_id")
28 roles = Role.find(:all, :order => 'builtin, position')
29 trackers = Tracker.find(:all, :order => 'position')
30
31 result = []
32 trackers.each do |tracker|
33 t = []
34 roles.each do |role|
35 row = counts.detect {|c| c['role_id'].to_s == role.id.to_s && c['tracker_id'].to_s == tracker.id.to_s}
36 t << [role, (row.nil? ? 0 : row['c'].to_i)]
37 end
38 result << [tracker, t]
39 end
40
41 result
42 end
43
44 # Copies workflows from source to targets
45 def self.copy(source_tracker, source_role, target_trackers, target_roles)
46 unless source_tracker.is_a?(Tracker) || source_role.is_a?(Role)
47 raise ArgumentError.new("source_tracker or source_role must be specified")
48 end
49
50 target_trackers = [target_trackers].flatten.compact
51 target_roles = [target_roles].flatten.compact
52
53 target_trackers = Tracker.all if target_trackers.empty?
54 target_roles = Role.all if target_roles.empty?
55
56 target_trackers.each do |target_tracker|
57 target_roles.each do |target_role|
58 copy_one(source_tracker || target_tracker,
59 source_role || target_role,
60 target_tracker,
61 target_role)
62 end
63 end
64 end
65
66 # Copies a single set of workflows from source to target
67 def self.copy_one(source_tracker, source_role, target_tracker, target_role)
68 unless source_tracker.is_a?(Tracker) && !source_tracker.new_record? &&
69 source_role.is_a?(Role) && !source_role.new_record? &&
70 target_tracker.is_a?(Tracker) && !target_tracker.new_record? &&
71 target_role.is_a?(Role) && !target_role.new_record?
72
73 raise ArgumentError.new("arguments can not be nil or unsaved objects")
74 end
75
76 if source_tracker == target_tracker && source_role == target_role
77 false
78 else
79 transaction do
80 delete_all :tracker_id => target_tracker.id, :role_id => target_role.id
81 connection.insert "INSERT INTO #{Workflow.table_name} (tracker_id, role_id, old_status_id, new_status_id, author, assignee)" +
82 " SELECT #{target_tracker.id}, #{target_role.id}, old_status_id, new_status_id, author, assignee" +
83 " FROM #{Workflow.table_name}" +
84 " WHERE tracker_id = #{source_tracker.id} AND role_id = #{source_role.id}"
85 end
86 true
87 end
88 end
89 end