Module: Mongoid::Token::Finders

Defined in:
lib/mongoid/token/finders.rb

Class Method Summary collapse

Class Method Details

.define_custom_token_finder_for(klass, field_name = :token) ⇒ Object 



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# File 'lib/mongoid/token/finders.rb', line 4

def self.define_custom_token_finder_for(klass, field_name = :token)
  klass.define_singleton_method(:"find_by_#{field_name.to_s}") do |token|
    self.find_by(field_name.to_sym => token)
  end

  klass.define_singleton_method :"find_with_#{field_name}" do |*args| # this is going to be painful if tokens happen to look like legal object ids
    args.all?{|arg| Moped::BSON::ObjectId.legal?(arg)} ? send(:"find_without_#{field_name}",*args) : klass.send(:"find_by_#{field_name.to_s}", args.first)
  end

  # this craziness taken from, and then compacted into a string class_eval
  # http://geoffgarside.co.uk/2007/02/19/activesupport-alias-method-chain-modules-and-class-methods/
  klass.class_eval("class << self; alias_method_chain :find, :#{field_name} if self.method_defined?(:find); end")
end