Validations in Rails

Format_validations.rb

# Validate that the price contains a maximum of two decimal places
# Validate the image url is a proper URL and ends with a image file type
# Validate that the size is only one of the following: "small", "medium", "large"

  validates :price, :format => { :with => /^\d+??(?:\.\d{0,2})?$/ }
  validates :imageurl, :format => { :with => /^(https?:\/\/)?([\da-z\.-]+)\.([a-z\.]{2,6})([\/\w \.-]*)*\.(png|jpg|gif)?$/ }
  validates :size, :inclusion => { :in => %w(small medium large) }

Text_validations.rb

# Validate the presence of the title, price, description, image url, size
# Validate that the title is unique, and less than 50 characters
# Validate that the description is less than 250 words


  validates :title, :price, :description, :imageurl, :size, :presence => true
  validates :title, :uniqueness => true, :length => { :minimum => 50 }
  validates :description, :length => { :maximum => 250 }