Exception: NameError

Inherits:
Exception show all
Defined in:
lib/active_support/core_ext/name_error.rb

Overview

Add a missing_name method to NameError instances.

Constant Summary

Constants inherited from Exception

Exception::FrameworkRegexp, Exception::TraceSubstitutions

Instance Method Summary collapse

Methods inherited from Exception

#application_backtrace, #blame_file!, #blamed_files, #clean_backtrace, #clean_message, #copy_blame!, #describe_blame, #framework_backtrace

Instance Method Details

#missing_nameObject

Add a method to obtain the missing name from a NameError.


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# File 'lib/active_support/core_ext/name_error.rb', line 4

def missing_name
  $1 if /((::)?([A-Z]\w*)(::[A-Z]\w*)*)$/ =~ message
end

#missing_name?(name) ⇒ Boolean

Was this exception raised because the given name was missing?

Returns:

  • (Boolean)

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# File 'lib/active_support/core_ext/name_error.rb', line 9

def missing_name?(name)
  if name.is_a? Symbol
    last_name = (missing_name || '').split('::').last
    last_name == name.to_s
  else
    missing_name == name.to_s
  end
end