Redmine 3.4.4

app/models/board.rb

@@ -0,0 +1,96 @@
+# Redmine - project management software
+# Copyright (C) 2006-2017  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 Board < ActiveRecord::Base
+  include Redmine::SafeAttributes
+  belongs_to :project
+  has_many :messages, lambda {order("#{Message.table_name}.created_on DESC")}, :dependent => :destroy
+  belongs_to :last_message, :class_name => 'Message'
+  acts_as_tree :dependent => :nullify
+  acts_as_positioned :scope => [:project_id, :parent_id]
+  acts_as_watchable
+
+  validates_presence_of :name, :description
+  validates_length_of :name, :maximum => 30
+  validates_length_of :description, :maximum => 255
+  validate :validate_board
+  attr_protected :id
+
+  scope :visible, lambda {|*args|
+    joins(:project).
+    where(Project.allowed_to_condition(args.shift || User.current, :view_messages, *args))
+  }
+
+  safe_attributes 'name', 'description', 'parent_id', 'position'
+
+  def visible?(user=User.current)
+    !user.nil? && user.allowed_to?(:view_messages, project)
+  end
+
+  def reload(*args)
+    @valid_parents = nil
+    super
+  end
+
+  def to_s
+    name
+  end
+
+  # Returns a scope for the board topics (messages without parent)
+  def topics
+    messages.where(:parent_id => nil)
+  end
+
+  def valid_parents
+    @valid_parents ||= project.boards - self_and_descendants
+  end
+
+  def reset_counters!
+    self.class.reset_counters!(id)
+  end
+
+  # Updates topics_count, messages_count and last_message_id attributes for +board_id+
+  def self.reset_counters!(board_id)
+    board_id = board_id.to_i
+    Board.where(:id => board_id).
+      update_all(["topics_count = (SELECT COUNT(*) FROM #{Message.table_name} WHERE board_id=:id AND parent_id IS NULL)," +
+               " messages_count = (SELECT COUNT(*) FROM #{Message.table_name} WHERE board_id=:id)," +
+               " last_message_id = (SELECT MAX(id) FROM #{Message.table_name} WHERE board_id=:id)", :id => board_id])
+  end
+
+  def self.board_tree(boards, parent_id=nil, level=0)
+    tree = []
+    boards.select {|board| board.parent_id == parent_id}.sort_by(&:position).each do |board|
+      tree << [board, level]
+      tree += board_tree(boards, board.id, level+1)
+    end
+    if block_given?
+      tree.each do |board, level|
+        yield board, level
+      end
+    end
+    tree
+  end
+
+  protected
+
+  def validate_board
+    if parent_id && parent_id_changed?
+      errors.add(:parent_id, :invalid) unless valid_parents.include?(parent)
+    end
+  end
+end