method

missing_name

v6.0.0 - Show latest stable - 0 notes - Class: NameError

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What's this?

missing_name() public

Extract the name of the missing constant from the exception message.

begin
  HelloWorld
rescue NameError => e
  e.missing_name
end
# => "HelloWorld"

Show source

# 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.
    message = respond_to?(:original_message) ? original_message : self.message

    if /undefined local variable or method/ !~ message
      $1 if /((::)?([A-Z]\w*)(::[A-Z]\w*)*)$/ =~ message
    end
  end

missing_name

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