Chris@0: # redMine - project management software
Chris@0: # Copyright (C) 2006  Jean-Philippe Lang
Chris@0: #
Chris@0: # This program is free software; you can redistribute it and/or
Chris@0: # modify it under the terms of the GNU General Public License
Chris@0: # as published by the Free Software Foundation; either version 2
Chris@0: # of the License, or (at your option) any later version.
Chris@0: # 
Chris@0: # This program is distributed in the hope that it will be useful,
Chris@0: # but WITHOUT ANY WARRANTY; without even the implied warranty of
Chris@0: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
Chris@0: # GNU General Public License for more details.
Chris@0: # 
Chris@0: # You should have received a copy of the GNU General Public License
Chris@0: # along with this program; if not, write to the Free Software
Chris@0: # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
Chris@0: 
Chris@0: class Tracker < ActiveRecord::Base
Chris@0:   before_destroy :check_integrity  
Chris@0:   has_many :issues
Chris@0:   has_many :workflows, :dependent => :delete_all do
Chris@0:     def copy(source_tracker)
Chris@0:       Workflow.copy(source_tracker, nil, proxy_owner, nil)
Chris@0:     end
Chris@0:   end
Chris@0:   
Chris@0:   has_and_belongs_to_many :projects
Chris@0:   has_and_belongs_to_many :custom_fields, :class_name => 'IssueCustomField', :join_table => "#{table_name_prefix}custom_fields_trackers#{table_name_suffix}", :association_foreign_key => 'custom_field_id'
Chris@0:   acts_as_list
Chris@0: 
Chris@0:   validates_presence_of :name
Chris@0:   validates_uniqueness_of :name
Chris@0:   validates_length_of :name, :maximum => 30
Chris@0: 
Chris@507:   named_scope :named, lambda {|arg| { :conditions => ["LOWER(#{table_name}.name) = LOWER(?)", arg.to_s.strip]}}
Chris@507:   
Chris@0:   def to_s; name end
Chris@0:   
Chris@0:   def <=>(tracker)
Chris@0:     name <=> tracker.name
Chris@0:   end
Chris@0: 
Chris@0:   def self.all
Chris@0:     find(:all, :order => 'position')
Chris@0:   end
Chris@0:   
Chris@0:   # Returns an array of IssueStatus that are used
Chris@0:   # in the tracker's workflows
Chris@0:   def issue_statuses
Chris@0:     if @issue_statuses
Chris@0:       return @issue_statuses 
Chris@0:     elsif new_record?
Chris@0:       return []
Chris@0:     end
Chris@0:     
Chris@0:     ids = Workflow.
Chris@0:             connection.select_rows("SELECT DISTINCT old_status_id, new_status_id FROM #{Workflow.table_name} WHERE tracker_id = #{id}").
Chris@0:             flatten.
Chris@0:             uniq
Chris@0:     
Chris@0:     @issue_statuses = IssueStatus.find_all_by_id(ids).sort
Chris@0:   end
Chris@0:   
Chris@0: private
Chris@0:   def check_integrity
Chris@0:     raise "Can't delete tracker" if Issue.find(:first, :conditions => ["tracker_id=?", self.id])
Chris@0:   end
Chris@0: end