comparison app/models/.svn/text-base/workflow.rb.svn-base @ 0:513646585e45

* Import Redmine trunk SVN rev 3859

+# redMine - project management software
+# Copyright (C) 2006  Jean-Philippe Lang
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+
+class Workflow < ActiveRecord::Base
+  belongs_to :role
+  belongs_to :old_status, :class_name => 'IssueStatus', :foreign_key => 'old_status_id'
+  belongs_to :new_status, :class_name => 'IssueStatus', :foreign_key => 'new_status_id'
+
+  validates_presence_of :role, :old_status, :new_status
+  
+  # Returns workflow transitions count by tracker and role
+  def self.count_by_tracker_and_role
+    counts = connection.select_all("SELECT role_id, tracker_id, count(id) AS c FROM #{Workflow.table_name} GROUP BY role_id, tracker_id")
+    roles = Role.find(:all, :order => 'builtin, position')
+    trackers = Tracker.find(:all, :order => 'position')
+    
+    result = []
+    trackers.each do |tracker|
+      t = []
+      roles.each do |role|
+        row = counts.detect {|c| c['role_id'].to_s == role.id.to_s && c['tracker_id'].to_s == tracker.id.to_s}
+        t << [role, (row.nil? ? 0 : row['c'].to_i)]
+      end
+      result << [tracker, t]
+    end
+    
+    result
+  end
+
+  # Find potential statuses the user could be allowed to switch issues to
+  def self.available_statuses(project, user=User.current)
+    Workflow.find(:all,
+                  :include => :new_status,
+                  :conditions => {:role_id => user.roles_for_project(project).collect(&:id)}).
+      collect(&:new_status).
+      compact.
+      uniq.
+      sort
+  end
+  
+  # Copies workflows from source to targets
+  def self.copy(source_tracker, source_role, target_trackers, target_roles)
+    unless source_tracker.is_a?(Tracker) || source_role.is_a?(Role)
+      raise ArgumentError.new("source_tracker or source_role must be specified")
+    end
+    
+    target_trackers = [target_trackers].flatten.compact
+    target_roles = [target_roles].flatten.compact
+    
+    target_trackers = Tracker.all if target_trackers.empty?
+    target_roles = Role.all if target_roles.empty?
+    
+    target_trackers.each do |target_tracker|
+      target_roles.each do |target_role|
+        copy_one(source_tracker || target_tracker,
+                   source_role || target_role,
+                   target_tracker,
+                   target_role)
+      end
+    end
+  end
+  
+  # Copies a single set of workflows from source to target
+  def self.copy_one(source_tracker, source_role, target_tracker, target_role)
+    unless source_tracker.is_a?(Tracker) && !source_tracker.new_record? &&
+      source_role.is_a?(Role) && !source_role.new_record? &&
+      target_tracker.is_a?(Tracker) && !target_tracker.new_record? &&
+      target_role.is_a?(Role) && !target_role.new_record?
+      
+      raise ArgumentError.new("arguments can not be nil or unsaved objects")
+    end
+    
+    if source_tracker == target_tracker && source_role == target_role
+      false
+    else
+      transaction do
+        delete_all :tracker_id => target_tracker.id, :role_id => target_role.id
+        connection.insert "INSERT INTO #{Workflow.table_name} (tracker_id, role_id, old_status_id, new_status_id)" +
+                          " SELECT #{target_tracker.id}, #{target_role.id}, old_status_id, new_status_id" +
+                          " FROM #{Workflow.table_name}" +
+                          " WHERE tracker_id = #{source_tracker.id} AND role_id = #{source_role.id}"
+      end
+      true
+    end
+  end
+end