Module: ConcertoHardware::TimeAccessible

Included in:
Player
Defined in:
lib/concerto_hardware/time_accessible.rb

Overview

Provides the time_accessor method, which is useful for creating a virtual parameter of type Time. The time is read and written as a standard Time-parasable string, which makes it possible to have form fields that reference the virtual attribute directly.

Note that it is possible to set as a Time object (to save instantiations). You cannot read the Time object directly, however.

Example

class MyModel
  extend ConcertoHardware::TimeAccessible
  time_accessor :party_time

  def is_it_party_time?
    Time.now > Time.new(self.party_time || "9001")
  end
end

inst = MyModel.new
inst.party_time = "2011-11-11 11:11:11 -0000"
inst.party_time # => "2011-11-11 11:11:11 -0000"

inst.party_time = Time.now + 24*60*60 # the party is tommorrow
inst.party_time # => "2014-10-01 23:01:06 -0400"

Instance Method Summary collapse

Instance Method Details

#time_accessor(*syms) ⇒ Object 



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# File 'lib/concerto_hardware/time_accessible.rb', line 29

def time_accessor(*syms)
  syms.each do |sym|
   self.class_eval <<-RUBY, __FILE__, __LINE__ + 1
      def #{sym}
        if @#{sym}_timeobj.is_a? Time
          @#{sym}_timeobj
        else
          nil
        end
      end
      def #{sym}=(val)
        @#{sym}_timeobj = nil
        if val.is_a? Time
          @#{sym}_timeobj = val
        elsif val.is_a? String
          begin
            @#{sym}_timeobj = Time.parse(val)
          rescue ArgumentError => e
            # Example: empty string or not a time
            # Value gets nil, which validations will flag.
          end
        end
      end
    RUBY
  end
end