hometown/app/helpers/jsonld_helper.rb
unarist 5927b43c0f Ignore empty response in ActivityPub::FetchRemoteStatusService (#4661)
* Ignore empty response in ActivityPub::FetchRemoteStatusService

This fixes `NoMethodError: undefined method `[]' for nil:NilClass` error.

* Check json.nil? in JsonLdHelper#supported_context?
2017-08-22 20:00:49 +02:00

40 lines
911 B
Ruby

# frozen_string_literal: true
module JsonLdHelper
def equals_or_includes?(haystack, needle)
haystack.is_a?(Array) ? haystack.include?(needle) : haystack == needle
end
def first_of_value(value)
value.is_a?(Array) ? value.first : value
end
def value_or_id(value)
value.is_a?(String) ? value : value['id']
end
def supported_context?(json)
!json.nil? && equals_or_includes?(json['@context'], ActivityPub::TagManager::CONTEXT)
end
def fetch_resource(uri)
response = build_request(uri).perform
return if response.code != 200
body_to_json(response.to_s)
end
def body_to_json(body)
body.is_a?(String) ? Oj.load(body, mode: :strict) : body
rescue Oj::ParseError
nil
end
private
def build_request(uri)
request = Request.new(:get, uri)
request.add_headers('Accept' => 'application/activity+json, application/ld+json')
request
end
end