trabajo-afectivo/lib/application_lib.rb

class ApplicationLib

=begin

load adapter based on setting option

  result = self.load_adapter_by_setting( 'some_setting_with_class_name' )

returns

  result = Some::Classname

=end

  def self.load_adapter_by_setting(setting)
    adapter = Setting.get( setting )
    return if !adapter

    # load backend
    self.load_adapter(adapter)
  end

=begin

load adapter

  result = self.load_adapter( 'Some::Classname' )

returns

  result = Some::Classname

=end

  def self.load_adapter(adapter)

    # load adapter

    # will only work on ruby 2.0
#    Object.const_get(adapter)

    # will work on ruby 1.9 and 2.0
#    adapter.split('::').inject(Object) do |mod, class_name|
#      mod.const_get(class_name)
#    end

    # will work with active_support
    adapter.constantize
  end
end