Class Object
In: lib/active_support/json/encoders/object.rb
lib/active_support/dependencies.rb
lib/active_support/core_ext/object/instance_variables.rb
lib/active_support/core_ext/object/misc.rb
lib/active_support/core_ext/object/extending.rb
lib/active_support/core_ext/object/conversions.rb
lib/active_support/core_ext/kernel/agnostics.rb
lib/active_support/core_ext/blank.rb
lib/active_support/core_ext/duplicable.rb
lib/active_support/vendor/builder-2.1.2/blankslate.rb
Parent: Object

Same as above, except in Object.

Methods

Included Modules

InstanceExecMethods

External Aliases

load -> load_without_new_constant_marking
send -> send!
  Anticipating Ruby 1.9 neutering send
method_added -> blank_slate_method_added

Public Class methods

Detect method additions to Object and remove them in the BlankSlate class.

Public Instance methods

A duck-type assistant method. For example, Active Support extends Date to define an acts_like_date? method, and extends Time to define acts_like_time?. As a result, we can do "x.acts_like?(:time)" and "x.acts_like?(:date)" to do duck-type-safe comparisons, since classes that we want to act like Time simply need to define an acts_like_time? method.

An object is blank if it‘s false, empty, or a whitespace string. For example, "", " ", nil, [], and {} are blank.

This simplifies

  if !address.nil? && !address.empty?

to

  if !address.blank?

Can you safely .dup this object? False for nil, false, true, symbols, and numbers; true otherwise.

Evaluate the block with the given arguments within the context of this object, so self is set to the method receiver.

From Mauricio‘s eigenclass.org/hiki/bounded+space+instance_exec

A Ruby-ized realization of the K combinator, courtesy of Mikael Brockman.

  def foo
    returning values = [] do
      values << 'bar'
      values << 'baz'
    end
  end

  foo # => ['bar', 'baz']

  def foo
    returning [] do |values|
      values << 'bar'
      values << 'baz'
    end
  end

  foo # => ['bar', 'baz']

Dumps object in JSON (JavaScript Object Notation). See www.json.org for more info.

Alias of to_s.

Converts an object into a string suitable for use as a URL query string, using the given key as the param name.

Note: This method is defined as a default implementation for all Objects for Hash#to_query to work.

Mark the given constant as unloadable. Unloadable constants are removed each time dependencies are cleared.

Note that marking a constant for unloading need only be done once. Setup or init scripts may list each unloadable constant that may need unloading; each constant will be removed for every subsequent clear, as opposed to for the first clear.

The provided constant descriptor may be a (non-anonymous) module or class, or a qualified constant name as a string or symbol.

Returns true if the constant was not previously marked for unloading, false otherwise.

An elegant way to refactor out common options

  with_options :order => 'created_at', :class_name => 'Comment' do |post|
    post.has_many :comments, :conditions => ['approved = ?', true], :dependent => :delete_all
    post.has_many :unapproved_comments, :conditions => ['approved = ?', false]
    post.has_many :all_comments
  end

Can also be used with an explicit receiver:

  map.with_options :controller => "people" do |people|
    people.connect "/people",     :action => "index"
    people.connect "/people/:id", :action => "show"
  end

[Validate]