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module CarrierWave
module Uploader
module ExtensionWhitelist
extend ActiveSupport::Concern
included do
before :cache, :check_extension_whitelist!
end
##
# Override this method in your uploader to provide a white list of extensions which
# are allowed to be uploaded. Compares the file's extension case insensitive.
# Furthermore, not only strings but Regexp are allowed as well.
#
# When using a Regexp in the white list, `\A` and `\z` are automatically added to
# the Regexp expression, also case insensitive.
#
# === Returns
#
# [NilClass, String, Regexp, Array[String, Regexp]] a white list of extensions which are allowed to be uploaded
#
# === Examples
#
# def extension_whitelist
# %w(jpg jpeg gif png)
# end
#
# Basically the same, but using a Regexp:
#
# def extension_whitelist
# [/jpe?g/, 'gif', 'png']
# end
#
def extension_whitelist; end
private
def check_extension_whitelist!(new_file)
extension = new_file.extension.to_s
if extension_whitelist && !whitelisted_extension?(extension)
raise CarrierWave::IntegrityError, I18n.translate(:"errors.messages.extension_whitelist_error", extension: new_file.extension.inspect, allowed_types: Array(extension_whitelist).join(", "))
end
end
def whitelisted_extension?(extension)
downcase_extension = extension.downcase
Array(extension_whitelist).any? { |item| downcase_extension =~ /\A#{item}\z/i }
end
end # ExtensionWhitelist
end # Uploader
end # CarrierWave
Version data entries
15 entries across 15 versions & 1 rubygems