Ruby on Rails – Validate a Cost

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Check the price and verify the format

#rails 3    
validates :price, :format => { :with => /\A\d+(?:\.\d{0,2})?\z/ }, :numericality => {:greater_than => 0, :less_than => 10}

#rails 2
validates_numericality_of :price, :greater_than => 0, :less_than => 10    
validates_format_of :price, :with => /\A\d+(?:\.\d{0,2})?\z/

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