Adds a branch for unlimited project hierarchy.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/branches/work@2148 e93f8b46-1217-0410-a6f0-8f06a7374b81

nested_projects/app/models/issue_status.rb

@@ -0,0 +1,69 @@
+# 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 IssueStatus < ActiveRecord::Base
+  before_destroy :check_integrity  
+  has_many :workflows, :foreign_key => "old_status_id", :dependent => :delete_all
+  acts_as_list
+
+  validates_presence_of :name
+  validates_uniqueness_of :name
+  validates_length_of :name, :maximum => 30
+  validates_format_of :name, :with => /^[\w\s\'\-]*$/i
+
+  def after_save
+    IssueStatus.update_all("is_default=#{connection.quoted_false}", ['id <> ?', id]) if self.is_default?
+  end  
+  
+  # Returns the default status for new issues
+  def self.default
+    find(:first, :conditions =>["is_default=?", true])
+  end
+
+  # Returns an array of all statuses the given role can switch to
+  # Uses association cache when called more than one time
+  def new_statuses_allowed_to(role, tracker)
+    new_statuses = workflows.select {|w| w.role_id == role.id && w.tracker_id == tracker.id}.collect{|w| w.new_status} if role && tracker
+    new_statuses ? new_statuses.compact.sort{|x, y| x.position <=> y.position } : []
+  end
+  
+  # Same thing as above but uses a database query
+  # More efficient than the previous method if called just once
+  def find_new_statuses_allowed_to(role, tracker)  
+    new_statuses = workflows.find(:all, 
+                                   :include => :new_status,
+                                   :conditions => ["role_id=? and tracker_id=?", role.id, tracker.id]).collect{ |w| w.new_status }.compact  if role && tracker
+    new_statuses ? new_statuses.sort{|x, y| x.position <=> y.position } : []
+  end
+  
+  def new_status_allowed_to?(status, role, tracker)
+    status && role && tracker ?
+      !workflows.find(:first, :conditions => {:new_status_id => status.id, :role_id => role.id, :tracker_id => tracker.id}).nil? :
+      false
+  end
+
+  def <=>(status)
+    position <=> status.position
+  end
+  
+  def to_s; name end
+
+private
+  def check_integrity
+    raise "Can't delete status" if Issue.find(:first, :conditions => ["status_id=?", self.id])
+  end
+end