mastodon-glitch/app/validators/url_validator.rb

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# frozen_string_literal: true
class URLValidator < ActiveModel::EachValidator
VALID_SCHEMES = %w(http https).freeze
def validate_each(record, attribute, value)
@value = value
record.errors.add(attribute, :invalid) unless compliant_url?
end
private
def compliant_url?
parsed_url.present? && valid_url_scheme? && valid_url_host?
end
def parsed_url
Addressable::URI.parse(@value)
rescue Addressable::URI::InvalidURIError
false
end
def valid_url_scheme?
VALID_SCHEMES.include?(parsed_url.scheme)
end
def valid_url_host?
parsed_url.host.present?
end
end