Chris@1296: # Redmine - project management software
Chris@1296: # Copyright (C) 2006-2012  Jean-Philippe Lang
Chris@1296: #
Chris@1296: # This program is free software; you can redistribute it and/or
Chris@1296: # modify it under the terms of the GNU General Public License
Chris@1296: # as published by the Free Software Foundation; either version 2
Chris@1296: # of the License, or (at your option) any later version.
Chris@1296: #
Chris@1296: # This program is distributed in the hope that it will be useful,
Chris@1296: # but WITHOUT ANY WARRANTY; without even the implied warranty of
Chris@1296: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
Chris@1296: # GNU General Public License for more details.
Chris@1296: #
Chris@1296: # You should have received a copy of the GNU General Public License
Chris@1296: # along with this program; if not, write to the Free Software
Chris@1296: # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
Chris@1296: 
Chris@1296: class Tracker < ActiveRecord::Base
Chris@1296: 
Chris@1296:   CORE_FIELDS_UNDISABLABLE = %w(project_id tracker_id subject description priority_id is_private).freeze
Chris@1296:   # Fields that can be disabled
Chris@1296:   # Other (future) fields should be appended, not inserted!
Chris@1296:   CORE_FIELDS = %w(assigned_to_id category_id fixed_version_id parent_issue_id start_date due_date estimated_hours done_ratio).freeze
Chris@1296:   CORE_FIELDS_ALL = (CORE_FIELDS_UNDISABLABLE + CORE_FIELDS).freeze
Chris@1296: 
Chris@1296:   before_destroy :check_integrity
Chris@1296:   has_many :issues
Chris@1296:   has_many :workflow_rules, :dependent => :delete_all do
Chris@1296:     def copy(source_tracker)
Chris@1296:       WorkflowRule.copy(source_tracker, nil, proxy_association.owner, nil)
Chris@1296:     end
Chris@1296:   end
Chris@1296: 
Chris@1296:   has_and_belongs_to_many :projects
Chris@1296:   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@1296:   acts_as_list
Chris@1296: 
Chris@1296:   attr_protected :field_bits
Chris@1296: 
Chris@1296:   validates_presence_of :name
Chris@1296:   validates_uniqueness_of :name
Chris@1296:   validates_length_of :name, :maximum => 30
Chris@1296: 
Chris@1296:   scope :sorted, order("#{table_name}.position ASC")
Chris@1296:   scope :named, lambda {|arg| where("LOWER(#{table_name}.name) = LOWER(?)", arg.to_s.strip)}
Chris@1296: 
Chris@1296:   def to_s; name end
Chris@1296: 
Chris@1296:   def <=>(tracker)
Chris@1296:     position <=> tracker.position
Chris@1296:   end
Chris@1296: 
Chris@1296:   # Returns an array of IssueStatus that are used
Chris@1296:   # in the tracker's workflows
Chris@1296:   def issue_statuses
Chris@1296:     if @issue_statuses
Chris@1296:       return @issue_statuses
Chris@1296:     elsif new_record?
Chris@1296:       return []
Chris@1296:     end
Chris@1296: 
Chris@1296:     ids = WorkflowTransition.
Chris@1296:             connection.select_rows("SELECT DISTINCT old_status_id, new_status_id FROM #{WorkflowTransition.table_name} WHERE tracker_id = #{id} AND type = 'WorkflowTransition'").
Chris@1296:             flatten.
Chris@1296:             uniq
Chris@1296: 
Chris@1296:     @issue_statuses = IssueStatus.find_all_by_id(ids).sort
Chris@1296:   end
Chris@1296: 
Chris@1296:   def disabled_core_fields
Chris@1296:     i = -1
Chris@1296:     @disabled_core_fields ||= CORE_FIELDS.select { i += 1; (fields_bits || 0) & (2 ** i) != 0}
Chris@1296:   end
Chris@1296: 
Chris@1296:   def core_fields
Chris@1296:     CORE_FIELDS - disabled_core_fields
Chris@1296:   end
Chris@1296: 
Chris@1296:   def core_fields=(fields)
Chris@1296:     raise ArgumentError.new("Tracker.core_fields takes an array") unless fields.is_a?(Array)
Chris@1296: 
Chris@1296:     bits = 0
Chris@1296:     CORE_FIELDS.each_with_index do |field, i|
Chris@1296:       unless fields.include?(field)
Chris@1296:         bits |= 2 ** i
Chris@1296:       end
Chris@1296:     end
Chris@1296:     self.fields_bits = bits
Chris@1296:     @disabled_core_fields = nil
Chris@1296:     core_fields
Chris@1296:   end
Chris@1296: 
Chris@1296:   # Returns the fields that are disabled for all the given trackers
Chris@1296:   def self.disabled_core_fields(trackers)
Chris@1296:     if trackers.present?
Chris@1296:       trackers.uniq.map(&:disabled_core_fields).reduce(:&)
Chris@1296:     else
Chris@1296:       []
Chris@1296:     end
Chris@1296:   end
Chris@1296: 
Chris@1296:   # Returns the fields that are enabled for one tracker at least
Chris@1296:   def self.core_fields(trackers)
Chris@1296:     if trackers.present?
Chris@1296:       trackers.uniq.map(&:core_fields).reduce(:|)
Chris@1296:     else
Chris@1296:       CORE_FIELDS.dup
Chris@1296:     end
Chris@1296:   end
Chris@1296: 
Chris@1296: private
Chris@1296:   def check_integrity
Chris@1296:     raise Exception.new("Can't delete tracker") if Issue.where(:tracker_id => self.id).any?
Chris@1296:   end
Chris@1296: end