Class: String

Inherits:
Object
  • Object
show all
Defined in:
app/cyclid/monkey_patches.rb

Overview

Add a method to String

Instance Method Summary collapse

Instance Method Details

#**(other) ⇒ Object

Provide a “safe” version of the % (interpolation) operator; if a key does not exist in arg, catch the KeyError and insert it as a nil value, and continue.

We’re using the ** operator as it’s one that isn’t already used by String, and it’s abusing % already so hey, why not. FTP



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# File 'app/cyclid/monkey_patches.rb', line 47

def **(other)
  res = nil
  arg = other ? other.dup : {}

  begin
    res = self % arg
  rescue KeyError => ex
    # Extract the key name from the exception message (sigh)
    match = ex.message.match(/\Akey{(.*)} not found\Z/)
    key = match[1]

    # Inject key with a default value and try again
    arg[key.to_sym] = nil
  end while res.nil? # rubocop:disable Lint/Loop

  return res
end