Exception: NameError
Relationships & Source Files | |
Extension / Inclusion / Inheritance Descendants | |
Subclasses:
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Super Chains via Extension / Inclusion / Inheritance | |
Class Chain:
self,
::Exception
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Instance Chain:
self,
::Exception
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Inherits: | Exception |
Defined in: | activesupport/lib/active_support/core_ext/name_error.rb |
Constant Summary
-
UNBOUND_METHOD_MODULE_NAME =
private
# File 'activesupport/lib/active_support/core_ext/name_error.rb', line 53Module.instance_method(:name)
Instance Method Summary
-
#missing_name
Extract the name of the missing constant from the exception message.
-
#missing_name?(name) ⇒ Boolean
Was this exception raised because the given name was missing?
::Exception
- Inherited
Instance Method Details
#missing_name
Extract the name of the missing constant from the exception message.
begin
HelloWorld
rescue NameError => e
e.missing_name
end
# => "HelloWorld"
# File 'activesupport/lib/active_support/core_ext/name_error.rb', line 12
def missing_name # Since ruby v2.3.0 `did_you_mean` gem is loaded by default. # It extends NameError#message with spell corrections which are SLOW. # We should use original_message message instead. = respond_to?(: ) ? : self. return unless .start_with?("uninitialized constant ") receiver = begin self.receiver rescue ArgumentError nil end if receiver == Object name.to_s elsif receiver "#{real_mod_name(receiver)}::#{self.name}" else if match = .match(/((::)?([A-Z]\w*)(::[A-Z]\w*)*)$/) match[1] end end end
#missing_name?(name) ⇒ Boolean
Was this exception raised because the given name was missing?
begin
HelloWorld
rescue NameError => e
e.missing_name?("HelloWorld")
end
# => true
# File 'activesupport/lib/active_support/core_ext/name_error.rb', line 44
def missing_name?(name) if name.is_a? Symbol self.name == name else missing_name == name.to_s end end