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# Redmine - project management software

# Copyright (C) 2006-2011  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 IssueCategory < ActiveRecord::Base

  belongs_to :project

  belongs_to :assigned_to, :class_name => 'Principal', :foreign_key => 'assigned_to_id'

  has_many :issues, :foreign_key => 'category_id', :dependent => :nullify

  validates_presence_of :name

  validates_uniqueness_of :name, :scope => [:project_id]

  validates_length_of :name, :maximum => 30

  attr_protected :project_id

  named_scope :named, lambda {|arg| { :conditions => ["LOWER(#{table_name}.name) = LOWER(?)", arg.to_s.strip]}}

  alias :destroy_without_reassign :destroy

  # Destroy the category

  # If a category is specified, issues are reassigned to this category

  def destroy(reassign_to = nil)

    if reassign_to && reassign_to.is_a?(IssueCategory) && reassign_to.project == self.project

      Issue.update_all("category_id = #{reassign_to.id}", "category_id = #{id}")

    end

    destroy_without_reassign

  end

  def <=>(category)

    name <=> category.name

  end

  def to_s; name end

end