[FIX] auto translate cache (#15768)

app/autotranslate/client/lib/autotranslate.js

@@ -71,7 +71,7 @@ export const AutoTranslate = {
 		Tracker.autorun(() => {
 			Subscriptions.find().observeChanges({
 				changed: (id, fields) => {
-					if (fields.hasOwnProperty('autoTranslate')) {
+					if (fields.hasOwnProperty('autoTranslate') || fields.hasOwnProperty('autoTranslateLanguage')) {
 						mem.clear(this.findSubscriptionByRid);
 					}
 				},

app/autotranslate/client/views/autoTranslateFlexTab.js

@@ -99,7 +99,7 @@ Template.autoTranslateFlexTab.onCreated(function() {
 	this.saveSetting = () => {
 		const field = this.editing.get();
 		const subscription = Subscriptions.findOne({ rid: this.rid, 'u._id': Meteor.userId() });
-		const previousLanguage = subscription.autoTranslateLanguage;
+		const previousLanguage = subscription && subscription.autoTranslateLanguage;
 		let value;
 		switch (field) {
 			case 'autoTranslate':

app/ui-utils/client/lib/renderMessageBody.js

@@ -1,4 +1,5 @@
 import s from 'underscore.string';
+import md5 from 'md5';
 
 import { callbacks } from '../../../callbacks';
 
@@ -32,4 +33,4 @@ export const renderMessageBody = mem((message) => {
 
 	return (Array.isArray(tokens) ? tokens.reverse() : [])
 		.reduce((html, { token, text }) => html.replace(token, () => text), html);
-}, 500, ({ _id, _updatedAt }) => _id && _updatedAt && _id + _updatedAt);
+}, 500, (message) => md5(JSON.stringify(message)));

package.json

@@ -90,6 +90,7 @@
 		"husky": "^1.2.0",
 		"i18next": "^17.0.17",
 		"less-loader": "^5.0.0",
+		"md5": "^2.2.1",
 		"mocha": "^5.2.0",
 		"mock-require": "^3.0.2",
 		"mongo-unit": "^1.4.4",