Update database/create.js

scripts/store/setters/http_referrer.js

@@ -0,0 +1,3 @@
+module.exports = function ({ http_referrer }) {
+  return http_referrer || null
+}

scripts/store/setters/index.js

@@ -4,3 +4,5 @@ exports.status = require('./status')
 exports.url = require('./url')
 exports.channel_name = require('./channel_name')
 exports.channel_id = require('./channel_id')
+exports.http_referrer = require('./http_referrer')
+exports.user_agent = require('./user_agent')

scripts/store/setters/user_agent.js

@@ -0,0 +1,3 @@
+module.exports = function ({ user_agent }) {
+  return user_agent || null
+}