Module: Wisper::Publisher

Defined in:
lib/wisper/publisher.rb

Defined Under Namespace

Modules: ClassMethods

Instance Method Summary collapse

Instance Method Details

#listenersObject


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# File 'lib/wisper/publisher.rb', line 3

def listeners
  registrations.map(&:listener).freeze
end

#on(*events, &block) ⇒ self

subscribe a block

Examples:

my_publisher.on(:order_created) { |args| ... }

Returns:

  • (self)

Raises:

  • (ArgumentError)

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# File 'lib/wisper/publisher.rb', line 25

def on(*events, &block)
  raise ArgumentError, 'must give at least one event' if events.empty?
  raise ArgumentError, 'must pass a block' if !block
  local_registrations << BlockRegistration.new(block, on: events)
  self
end

#subscribe(listener, options = {}) ⇒ self

subscribe a listener

Examples:

my_publisher.subscribe(MyListener.new)

Returns:

  • (self)

Raises:

  • (ArgumentError)

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# File 'lib/wisper/publisher.rb', line 13

def subscribe(listener, options = {})
  raise ArgumentError, "#{__method__} does not take a block, did you mean to call #on instead?" if block_given?
  local_registrations << ObjectRegistration.new(listener, options)
  self
end