Module: Mongoid::FindBy::ClassMethods

Defined in:
lib/mongoid/find_by.rb

Instance Method Summary collapse

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method_id, *args, &block) ⇒ Object 



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# File 'lib/mongoid/find_by.rb', line 11

def method_missing(method_id, *args, &block)
  conditions = {}
  bang = false

  case method_id.to_s
    when /^find_(all|last||first)_?by_([_a-zA-Z]\w*)(!?)$/
      finder_type = $1.blank? ? :first : $1.to_sym
      bang = true if $3 == '!'

      tokens = $2.split(/_and_/)
      raise ArgumentError, 'Attributes and arguments does\'nt match' if tokens.size != args.size

      tokens.each_with_index do |attr, i|
        conditions[attr] = args[i]
      end

      result = find(finder_type, :conditions => conditions)

      if result.nil? and bang
        raise Mongoid::Errors::DocumentNotFound.new(self.class, args)
      else
        return result
      end
    else
      super
  end
end