Update SLUG field in server side post_create and put_update hooks.

api/hooks/articles/post_create.js

@@ -0,0 +1,11 @@
+// @ts-check
+const { generateArticleSlugUrlString: generateSlugUrlStringByArticle } = require("../lib/helper")
+
+;(function () {
+    /** @type {import("tibi-types").HookResponse} */
+    let hookResponse
+
+    context.data.article.content.slug = generateSlugUrlStringByArticle(context.data.article)
+
+    return hookResponse
+})()

api/hooks/articles/put_update.js

@@ -0,0 +1,11 @@
+// @ts-check
+const { generateArticleSlugUrlString: generateSlugUrlStringByArticle } = require("../lib/helper")
+
+;(function () {
+    /** @type {import("tibi-types").HookResponse} */
+    let hookResponse
+
+    context.data.article.content.slug = generateSlugUrlStringByArticle(context.data.article)
+
+    return hookResponse
+})()

api/hooks/lib/helper.js

@@ -0,0 +1,17 @@
+const generateArticleSlugUrlString = (article) => {
+    let slug = article.content.slug
+    let title = article.content.title
+
+    if (!slug || slug === "") {
+        slug = title
+            .replace(/[^a-zA-Z0-9 ]/g, "")
+            .replace(/\s/g, "-")
+            .toLowerCase()
+    }
+
+    return slug
+}
+
+module.exports = {
+    generateArticleSlugUrlString,
+}