Chris@1517: # Redmine - project management software
Chris@1517: # Copyright (C) 2006-2014  Jean-Philippe Lang
Chris@1517: #
Chris@1517: # This program is free software; you can redistribute it and/or
Chris@1517: # modify it under the terms of the GNU General Public License
Chris@1517: # as published by the Free Software Foundation; either version 2
Chris@1517: # of the License, or (at your option) any later version.
Chris@1517: #
Chris@1517: # This program is distributed in the hope that it will be useful,
Chris@1517: # but WITHOUT ANY WARRANTY; without even the implied warranty of
Chris@1517: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
Chris@1517: # GNU General Public License for more details.
Chris@1517: #
Chris@1517: # You should have received a copy of the GNU General Public License
Chris@1517: # along with this program; if not, write to the Free Software
Chris@1517: # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
Chris@1517: 
Chris@1517: class Board < ActiveRecord::Base
Chris@1517:   include Redmine::SafeAttributes
Chris@1517:   belongs_to :project
Chris@1517:   has_many :topics, :class_name => 'Message', :conditions => "#{Message.table_name}.parent_id IS NULL", :order => "#{Message.table_name}.created_on DESC"
Chris@1517:   has_many :messages, :dependent => :destroy, :order => "#{Message.table_name}.created_on DESC"
Chris@1517:   belongs_to :last_message, :class_name => 'Message', :foreign_key => :last_message_id
Chris@1517:   acts_as_tree :dependent => :nullify
Chris@1517:   acts_as_list :scope => '(project_id = #{project_id} AND parent_id #{parent_id ? "= #{parent_id}" : "IS NULL"})'
Chris@1517:   acts_as_watchable
Chris@1517: 
Chris@1517:   validates_presence_of :name, :description
Chris@1517:   validates_length_of :name, :maximum => 30
Chris@1517:   validates_length_of :description, :maximum => 255
Chris@1517:   validate :validate_board
Chris@1517: 
Chris@1517:   scope :visible, lambda {|*args|
Chris@1517:     includes(:project).where(Project.allowed_to_condition(args.shift || User.current, :view_messages, *args))
Chris@1517:   }
Chris@1517: 
Chris@1517:   safe_attributes 'name', 'description', 'parent_id', 'move_to'
Chris@1517: 
Chris@1517:   def visible?(user=User.current)
Chris@1517:     !user.nil? && user.allowed_to?(:view_messages, project)
Chris@1517:   end
Chris@1517: 
Chris@1517:   def reload(*args)
Chris@1517:     @valid_parents = nil
Chris@1517:     super
Chris@1517:   end
Chris@1517: 
Chris@1517:   def to_s
Chris@1517:     name
Chris@1517:   end
Chris@1517: 
Chris@1517:   def valid_parents
Chris@1517:     @valid_parents ||= project.boards - self_and_descendants
Chris@1517:   end
Chris@1517: 
Chris@1517:   def reset_counters!
Chris@1517:     self.class.reset_counters!(id)
Chris@1517:   end
Chris@1517: 
Chris@1517:   # Updates topics_count, messages_count and last_message_id attributes for +board_id+
Chris@1517:   def self.reset_counters!(board_id)
Chris@1517:     board_id = board_id.to_i
Chris@1517:     where(["id = ?", board_id]).
Chris@1517:       update_all("topics_count = (SELECT COUNT(*) FROM #{Message.table_name} WHERE board_id=#{board_id} AND parent_id IS NULL)," +
Chris@1517:                " messages_count = (SELECT COUNT(*) FROM #{Message.table_name} WHERE board_id=#{board_id})," +
Chris@1517:                " last_message_id = (SELECT MAX(id) FROM #{Message.table_name} WHERE board_id=#{board_id})")
Chris@1517:   end
Chris@1517: 
Chris@1517:   def self.board_tree(boards, parent_id=nil, level=0)
Chris@1517:     tree = []
Chris@1517:     boards.select {|board| board.parent_id == parent_id}.sort_by(&:position).each do |board|
Chris@1517:       tree << [board, level]
Chris@1517:       tree += board_tree(boards, board.id, level+1)
Chris@1517:     end
Chris@1517:     if block_given?
Chris@1517:       tree.each do |board, level|
Chris@1517:         yield board, level
Chris@1517:       end
Chris@1517:     end
Chris@1517:     tree
Chris@1517:   end
Chris@1517: 
Chris@1517:   protected
Chris@1517: 
Chris@1517:   def validate_board
Chris@1517:     if parent_id && parent_id_changed?
Chris@1517:       errors.add(:parent_id, :invalid) unless valid_parents.include?(parent)
Chris@1517:     end
Chris@1517:   end
Chris@1517: end