module Virtuaservices::Concerns::MimeTypable::ClassMethods

Submodule holding all the static methods add to the current subclass. @author Vincent Courtois <courtois.vincent@outlook.com>

Public Instance Methods

mime_type(values) click to toggle source

Defines the MIME type attribute with the given possible MIME types. @param values [Array<String>] the possible MIME types, * can be used as wild cards.

# File lib/virtuaservices/concerns/mime_typable.rb, line 13
def mime_type(values)

  # @!attribute [rw] mime_type
  #   @return [String] the MIME type of the file, obtained from the uploaded file.
  field :mime_type, type: String
      
  validates :mime_type, presence: {message: 'required'}

  validate :mime_type_validity, if: :mime_type?

  # Validates the validity of the MIME type by checking if it respects any of the given mime types.
  # If it does not respect any MIME types possible, it adds an error to the mime_type field and invalidates.
  define_method :mime_type_validity do
    values.each do |type|
      type_regex = ::Regexp.new("^#{type.sub(/\*/, '(.+)')}$")
      return true if !type_regex.match(mime_type).nil?
    end
    errors.add(:mime_type, 'pattern')
  end
end