Class: Jsm::Callbacks::Chain

Inherits:
Object
  • Object
show all
Defined in:
lib/jsm/callbacks/chain.rb

Overview

chain is a repository to store list of callbacks of an event, for example store before and after callback of an event called ‘run` e.g: before_callback = Jsm::Callbacks::Callback.new(:before) do |user| log.info(’before callback’) end before_callback2 = Jsm::Callbacks::Callback.new(:before) do |user|

user.age = 20

end after_callback = Jsm::Callbacks::Callback.new(:after) do |result, user|

log.info('after callback')

end chain = Jsm::Callbacks::Chain.new(:run) chain.insert_callback(before_callback) chain.insert_callback(before_callback2) chain.insert_callback(after_callback) user = User.new result = chain.compile user do |user|

user.address = 'Indonesia'

end result -> true log -> before callback after callback user.address -> ‘Indonesia’

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(context) ⇒ Chain

Returns a new instance of Chain.



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# File 'lib/jsm/callbacks/chain.rb', line 27

def initialize(context)
  @context = context
  @callbacks = []
end

Instance Attribute Details

#callbacks ⇒ Object (readonly)

Returns the value of attribute callbacks.



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# File 'lib/jsm/callbacks/chain.rb', line 26

def callbacks
  @callbacks
end

#context ⇒ Object (readonly)

Returns the value of attribute context.



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# File 'lib/jsm/callbacks/chain.rb', line 26

def context
  @context
end

Instance Method Details

#compile(*args, &block) ⇒ Object 



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# File 'lib/jsm/callbacks/chain.rb', line 36

def compile(*args, &block)
  arrange_callbacks(*args, &block)
end

#insert_callback(callback) ⇒ Object 



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# File 'lib/jsm/callbacks/chain.rb', line 32

def insert_callback(callback)
  @callbacks.push(callback)
end