discourse/lib/theme_translation_parser.rb
David Taylor a48731e359
FEATURE: Support additional metadata in theme about.json (#6944)
New `about.json` fields (all optional):
 - `authors`: An arbitrary string describing the theme authors
 - `theme_version`: An arbitrary string describing the theme version
 - `minimum_discourse_version`: Theme will be auto-disabled for lower versions. Must be a valid version descriptor.
 - `maximum_discourse_version`: Theme will be auto-disabled for lower versions. Must be a valid version descriptor.

A localized description for a theme can be provided in the language files under the `theme_metadata.description` key

The admin UI has been re-arranged to display this new information, and give more prominence to the remote theme options.
2019-01-25 14:19:01 +00:00

33 lines
1.1 KiB
Ruby

class ThemeTranslationParser
INTERNAL_KEYS = [:theme_metadata]
class InvalidYaml < StandardError; end
def initialize(setting_field, internal: internal)
@setting_field = setting_field
@internal = internal
end
def self.check_contains_hashes(hash)
hash.all? { |key, value| value.is_a?(String) || (value.is_a?(Hash) && self.check_contains_hashes(value)) }
end
def load
return {} if @setting_field.value.blank?
begin
parsed = YAML.safe_load(@setting_field.value)
rescue Psych::SyntaxError, Psych::DisallowedClass => e
raise InvalidYaml.new(e.message)
end
raise InvalidYaml.new(I18n.t("themes.locale_errors.invalid_yaml")) unless parsed.is_a?(Hash) && ThemeTranslationParser.check_contains_hashes(parsed)
raise InvalidYaml.new(I18n.t("themes.locale_errors.top_level_locale")) unless parsed.keys.length == 1 && parsed.keys[0] == @setting_field.name
parsed.deep_symbolize_keys!
parsed[@setting_field.name.to_sym].slice!(*INTERNAL_KEYS) if @internal
parsed[@setting_field.name.to_sym].except!(*INTERNAL_KEYS) if !@internal
parsed
end
end