Class: NilClass

Inherits:
Object show all
Defined in:
lib/active_support/whiny_nil.rb,
lib/active_support/core_ext/blank.rb

Overview

The methods here are provided to speed up function blank? in class Object

Constant Summary collapse

WHINERS =
[ ::ActiveRecord::Base, ::Array ]
@@method_class_map =
Hash.new

Instance Method Summary collapse

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method, *args, &block) ⇒ Object (private)


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# File 'lib/active_support/whiny_nil.rb', line 26

def method_missing(method, *args, &block)
  raise_nil_warning_for @@method_class_map[method], method, caller
end

Instance Method Details

#blank?Boolean

Returns:

  • (Boolean)

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# File 'lib/active_support/core_ext/blank.rb', line 3

def blank?
  true
end

#idObject

Raises:

  • (RuntimeError)

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# File 'lib/active_support/whiny_nil.rb', line 21

def id
  raise RuntimeError, "Called id for nil, which would mistakenly be 4 -- if you really wanted the id of nil, use object_id", caller
end