Module: MerbMerchant::RequiresParameters

Included in:
Billing::Gateway, Country
Defined in:
lib/merb_merchant/lib/requires_parameters.rb

Overview

:nodoc:

Instance Method Summary collapse

Instance Method Details

#requires!(hash, *params) ⇒ Object 



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# File 'lib/merb_merchant/lib/requires_parameters.rb', line 3

def requires!(hash, *params)
  params.each do |param| 
    if param.is_a?(Array)
      raise ArgumentError.new("Missing required parameter: #{param.first}") unless hash.has_key?(param.first) 

      valid_options = param[1..-1]
      raise ArgumentError.new("Parameter: #{param.first} must be one of #{valid_options.to_sentence(:connector => 'or')}") unless valid_options.include?(hash[param.first])
    else
      raise ArgumentError.new("Missing required parameter: #{param}") unless hash.has_key?(param) 
    end
  end
end