liangzan

# lib/formtastic/i18n.rb
SCOPES = [
    'soccer_team.player.update.name',
    'soccer_team.update.name',
    'soccer_team.player.name',
    'soccer_team.name',
    'player.name',
    'name'
  ]

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# lib/formtastic/i18n.rb
def translate(*args)
  key = args.shift.to_sym
  options = args.extract_options!
  options.reverse_merge!(:default => DEFAULT_VALUES[key])
  options[:scope] = [DEFAULT_SCOPE, options[:scope]].flatten.compact
  ::I18n.translate(key, *(args << options))
end

liangzan

# actionpack/lib/action_view/base.rb
module ActionView
  class Base
    ...
    attr_accessor :output_buffer
    ...
  end
end

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# actionpack/lib/action_view/helpers/text_helper.rb
def concat(string, unused_binding = nil)
  if unused_binding
    ActiveSupport::Deprecation.warn("The binding argument of #concat is no longer needed.  Please remove it from your views and helpers.", caller)
  end
  output_buffer.safe_concat(string)
end

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# spec/commit_button_spec.rb
describe 'SemanticFormBuilder#commit_button' do
  ...
  before do
    @output_buffer = ''
    mock_everything
  end
  ...
end

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# spec/commit_button_spec.rb
it 'should pass options given in :button_html to the button' do
  @new_post.stub!(:new_record?).and_return(false)
  semantic_form_for(@new_post) do |builder|
    concat(builder.commit_button('text', :button_html => {:class => 'my_class', :id => 'my_id'}))
  end
  output_buffer.should have_tag('li.commit input#my_id')
  output_buffer.should have_tag('li.commit input.my_class')
end

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class Event < ActiveRecord::Base
  validates_length_of :title, :minimum => 5
end

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>> reflection = Event.reflect_on_validations_for(:title)
>> reflection[0].macro
=> :validates_length_of
>> reflection[0].options
=> { :minimum => 5 }

liangzan

# lib/validation_reflection.rb 
ActiveRecord::Base.class_eval do
  include ::ActiveRecordExtensions::ValidationReflection
  ::ActiveRecordExtensions::ValidationReflection.load_config
  ::ActiveRecordExtensions::ValidationReflection.install(self)
end

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# lib/validation_reflection.rb
def install(base)
  @@reflected_validations.each do |validation_type|
    next if base.respond_to?(:"#{validation_type}_with_reflection")
    ignore_subvalidations = false

    if validation_type.kind_of?(::Hash)
      ignore_subvalidations = validation_type[:ignore_subvalidations]
      validation_type = validation_type[:method]
    end