Module: ActiveAdmin::Callbacks::ClassMethods

Defined in:
lib/active_admin/callbacks.rb

Instance Method Summary collapse

Instance Method Details

#define_active_admin_callbacks(*names) ⇒ Object

Define a new callback.

Example:

class MyClassWithCallbacks
  include ActiveAdmin::Callbacks

  define_active_admin_callbacks :save

  before_save do |arg1, arg2|
    # runs before save
  end

  after_save :call_after_save

  def save
    # Will run before, yield, then after
    run_save_callbacks :arg1, :arg2 do
      save!
    end
  end

  protected

  def call_after_save(arg1, arg2)
    # runs after save
  end
end



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# File 'lib/active_admin/callbacks.rb', line 58

def define_active_admin_callbacks(*names)
 names.each do |name|
   [:before, :after].each do |type|
     # Create an inheritable accessor array for the callbacks
     class_inheritable_array "#{type}_#{name}_callbacks".to_sym
     send("#{type}_#{name}_callbacks=".to_sym, [])

     # Define a method to set the callback
     class_eval("       # def self.before_create\n       def self.\#{type}_\#{name}(method = nil, &block)\n         \#{type}_\#{name}_callbacks << (method || block)\n       end\n     EOS\n   end\n\n   # Define a method to run the callbacks\n   class_eval(<<-EOS, __FILE__, __LINE__ + 1)\n     def run_\#{name}_callbacks(*args)\n       self.class.before_\#{name}_callbacks.each{|callback| call_callback_with(callback, *args)}\n       value = yield if block_given?\n       self.class.after_\#{name}_callbacks.each{|callback| call_callback_with(callback, *args)}\n       return value\n     end\n     EOS\n  end\nend\n", __FILE__, __LINE__ + 1)