view app/models/setting.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 Setting < ActiveRecord::Base

  DATE_FORMATS = [
	'%Y-%m-%d',
	'%d/%m/%Y',
	'%d.%m.%Y',
	'%d-%m-%Y',
	'%m/%d/%Y',
	'%d %b %Y',
	'%d %B %Y',
	'%b %d, %Y',
	'%B %d, %Y'
    ]

  TIME_FORMATS = [
    '%H:%M',
    '%I:%M %p'
    ]

  ENCODINGS = %w(US-ASCII
                  windows-1250
                  windows-1251
                  windows-1252
                  windows-1253
                  windows-1254
                  windows-1255
                  windows-1256
                  windows-1257
                  windows-1258
                  windows-31j
                  ISO-2022-JP
                  ISO-2022-KR
                  ISO-8859-1
                  ISO-8859-2
                  ISO-8859-3
                  ISO-8859-4
                  ISO-8859-5
                  ISO-8859-6
                  ISO-8859-7
                  ISO-8859-8
                  ISO-8859-9
                  ISO-8859-13
                  ISO-8859-15
                  KOI8-R
                  UTF-8
                  UTF-16
                  UTF-16BE
                  UTF-16LE
                  EUC-JP
                  Shift_JIS
                  CP932
                  GB18030
                  GBK
                  ISCII91
                  EUC-KR
                  Big5
                  Big5-HKSCS
                  TIS-620)

  cattr_accessor :available_settings
  @@available_settings = YAML::load(File.open("#{Rails.root}/config/settings.yml"))
  Redmine::Plugin.all.each do |plugin|
    next unless plugin.settings
    @@available_settings["plugin_#{plugin.id}"] = {'default' => plugin.settings[:default], 'serialized' => true}
  end

  validates_uniqueness_of :name
  validates_inclusion_of :name, :in => @@available_settings.keys
  validates_numericality_of :value, :only_integer => true, :if => Proc.new { |setting| @@available_settings[setting.name]['format'] == 'int' }

  # Hash used to cache setting values
  @cached_settings = {}
  @cached_cleared_on = Time.now

  def value
    v = read_attribute(:value)
    # Unserialize serialized settings
    v = YAML::load(v) if @@available_settings[name]['serialized'] && v.is_a?(String)
    v = v.to_sym if @@available_settings[name]['format'] == 'symbol' && !v.blank?
    v
  end

  def value=(v)
    v = v.to_yaml if v && @@available_settings[name] && @@available_settings[name]['serialized']
    write_attribute(:value, v.to_s)
  end

  # Returns the value of the setting named name
  def self.[](name)
    v = @cached_settings[name]
    v ? v : (@cached_settings[name] = find_or_default(name).value)
  end

  def self.[]=(name, v)
    setting = find_or_default(name)
    setting.value = (v ? v : "")
    @cached_settings[name] = nil
    setting.save
    setting.value
  end

  # Defines getter and setter for each setting
  # Then setting values can be read using: Setting.some_setting_name
  # or set using Setting.some_setting_name = "some value"
  @@available_settings.each do |name, params|
    src = <<-END_SRC
    def self.#{name}
      self[:#{name}]
    end

    def self.#{name}?
      self[:#{name}].to_i > 0
    end

    def self.#{name}=(value)
      self[:#{name}] = value
    end
    END_SRC
    class_eval src, __FILE__, __LINE__
  end

  # Helper that returns an array based on per_page_options setting
  def self.per_page_options_array
    per_page_options.split(%r{[\s,]}).collect(&:to_i).select {|n| n > 0}.sort
  end

  def self.openid?
    Object.const_defined?(:OpenID) && self[:openid].to_i > 0
  end

  # Checks if settings have changed since the values were read
  # and clears the cache hash if it's the case
  # Called once per request
  def self.check_cache
    settings_updated_on = Setting.maximum(:updated_on)
    if settings_updated_on && @cached_cleared_on <= settings_updated_on
      clear_cache
    end
  end
  
  # Clears the settings cache
  def self.clear_cache
    @cached_settings.clear
    @cached_cleared_on = Time.now
    logger.info "Settings cache cleared." if logger
  end

private
  # Returns the Setting instance for the setting named name
  # (record found in database or new record with default value)
  def self.find_or_default(name)
    name = name.to_s
    raise "There's no setting named #{name}" unless @@available_settings.has_key?(name)
    setting = find_by_name(name)
    unless setting
      setting = new(:name => name)
      setting.value = @@available_settings[name]['default']
    end
    setting
  end
end