Module: Bulldog::Validations::ClassMethods

Defined in:
lib/bulldog/validations.rb

Instance Method Summary collapse

Instance Method Details

#validates_attachment_file_size_of(name, options = {}) ⇒ Object 



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# File 'lib/bulldog/validations.rb', line 15

def validates_attachment_file_size_of(name, options={})
  if (range = options.delete(:in))
    options[:greater_than] = range.min - 1
    options[:less_than   ] = range.max + 1
  end
  validates_each(name, options) do |record, attribute, attachment|
    if attachment.present?
      file_size = attachment.file_size
      if options[:greater_than]
        file_size > options[:greater_than] or
          record.errors.add attribute, options[:message] || :attachment_too_small
      end
      if options[:less_than]
        file_size < options[:less_than] or
          record.errors.add attribute, options[:message] || :attachment_too_large
      end
    end
  end
end

#validates_attachment_presence_of(name, options = {}) ⇒ Object 



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# File 'lib/bulldog/validations.rb', line 8

def validates_attachment_presence_of(name, options={})
  validates_each(name, options) do |record, attribute, attachment|
    attachment.present? && attachment.file_size > 0 or
      record.errors.add attribute, options[:message] || :attachment_blank
  end
end

#validates_attachment_type_of(name, options = {}) ⇒ Object 



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# File 'lib/bulldog/validations.rb', line 35

def validates_attachment_type_of(name, options={})
  validates_each(name, options) do |record, attribute, attachment|
    if attachment.present?
      if (pattern = options[:matches])
        attachment.content_type =~ pattern or
          record.errors.add attribute, options[:message] || :attachment_wrong_type
      elsif (specifier = options[:is])
        if specifier.is_a?(Symbol)
          attachment_class = Attachment.class_from_type(specifier)
          attachment.is_a?(attachment_class) or
            record.errors.add attribute, options[:message] || :attachment_wrong_type
        else
          parse_mime_type = lambda do |string|
            mime_type, parameter_string = string.to_s.split(/;/)
            parameters = {}
            (parameter_string || '').split(/,/).each do |pair|
              name, value = pair.strip.split(/=/)
              parameters[name] = value
            end
            [mime_type, parameters]
          end

          expected_type, expected_parameters = parse_mime_type.call(specifier)
          actual_type, actual_parameters = parse_mime_type.call(attachment.content_type)
          expected_type == actual_type && expected_parameters.all?{|k,v| actual_parameters[k] == v} or
            record.errors.add attribute, options[:message] || :wrong_type
        end
      end
    end
  end
end