Module: TimelineFu::Fires::ClassMethods

Defined in:
lib/timeline_fu/fires.rb

Instance Method Summary collapse

Instance Method Details

#fires(event_type, opts) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/timeline_fu/fires.rb', line 8

def fires(event_type, opts)
  raise ArgumentError, "Argument :on is mandatory" unless opts.has_key?(:on)

  # Array provided, set multiple callbacks
  if opts[:on].kind_of?(Array)
    opts[:on].each { |on| fires(event_type, opts.merge({:on => on})) }
    return
  end

  opts[:subject] = :self unless opts.has_key?(:subject)

  method_name = :"fire_#{event_type}_after_#{opts[:on]}"
  define_method(method_name) do
    create_options = [:actor, :subject, :secondary_subject].inject({}) do |memo, sym|
      case opts[sym]
      when :self
        memo[sym] = self
      else
        memo[sym] = send(opts[sym]) if opts[sym]
      end
      memo
    end
    create_options[:event_type] = event_type.to_s

    TimelineEvent.create!(create_options)
  end

  send(:"after_#{opts[:on]}", method_name, :if => opts[:if])
end