view app/models/enumeration.rb @ 1082:997f6d7738f7 bug_531

In repo controller entry action, show the page for the file even if it's binary (so user still has access to history etc links). This makes it possible to use the entry action as the default when a file is clicked on

# 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 Enumeration < ActiveRecord::Base
  default_scope :order => "#{Enumeration.table_name}.position ASC"

  belongs_to :project

  acts_as_list :scope => 'type = \'#{type}\''
  acts_as_customizable
  acts_as_tree :order => 'position ASC'

  before_destroy :check_integrity
  before_save    :check_default

  validates_presence_of :name
  validates_uniqueness_of :name, :scope => [:type, :project_id]
  validates_length_of :name, :maximum => 30

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

  def self.default
    # Creates a fake default scope so Enumeration.default will check
    # it's type.  STI subclasses will automatically add their own
    # types to the finder.
    if self.descends_from_active_record?
      find(:first, :conditions => { :is_default => true, :type => 'Enumeration' })
    else
      # STI classes are
      find(:first, :conditions => { :is_default => true })
    end
  end

  # Overloaded on concrete classes
  def option_name
    nil
  end

  def check_default
    if is_default? && is_default_changed?
      Enumeration.update_all("is_default = #{connection.quoted_false}", {:type => type})
    end
  end

  # Overloaded on concrete classes
  def objects_count
    0
  end

  def in_use?
    self.objects_count != 0
  end

  # Is this enumeration overiding a system level enumeration?
  def is_override?
    !self.parent.nil?
  end

  alias :destroy_without_reassign :destroy

  # Destroy the enumeration
  # If a enumeration is specified, objects are reassigned
  def destroy(reassign_to = nil)
    if reassign_to && reassign_to.is_a?(Enumeration)
      self.transfer_relations(reassign_to)
    end
    destroy_without_reassign
  end

  def <=>(enumeration)
    position <=> enumeration.position
  end

  def to_s; name end

  # Returns the Subclasses of Enumeration.  Each Subclass needs to be
  # required in development mode.
  #
  # Note: subclasses is protected in ActiveRecord
  def self.get_subclasses
    @@subclasses[Enumeration]
  end

  # Does the +new+ Hash override the previous Enumeration?
  def self.overridding_change?(new, previous)
    if (same_active_state?(new['active'], previous.active)) && same_custom_values?(new,previous)
      return false
    else
      return true
    end
  end

  # Does the +new+ Hash have the same custom values as the previous Enumeration?
  def self.same_custom_values?(new, previous)
    previous.custom_field_values.each do |custom_value|
      if custom_value.value != new["custom_field_values"][custom_value.custom_field_id.to_s]
        return false
      end
    end

    return true
  end

  # Are the new and previous fields equal?
  def self.same_active_state?(new, previous)
    new = (new == "1" ? true : false)
    return new == previous
  end

private
  def check_integrity
    raise "Can't delete enumeration" if self.in_use?
  end

end

# Force load the subclasses in development mode
require_dependency 'time_entry_activity'
require_dependency 'document_category'
require_dependency 'issue_priority'