fix(v2): custom searchbar should appear even if themeconfig.algolia i…

…s undefined

CHANGELOG-2.x.md

@@ -2,6 +2,7 @@
 
 ## Unreleased
 
+- Fixed a bug in which if `themeConfig.algolia` is not defined, the custom searchbar won't appear.
 - Reduce memory usage consumption.
 - Slightly adjust search icon position to be more aligned on small width device.
 - Convert sitemap plugin to TypeScript.

packages/docusaurus-theme-classic/src/theme/Navbar/index.js

@@ -52,7 +52,7 @@ function Navbar() {
   const [theme, setTheme] = useTheme();
   const {siteConfig = {}} = context;
   const {baseUrl, themeConfig = {}} = siteConfig;
-  const {algolia, navbar = {}} = themeConfig;
+  const {navbar = {}} = themeConfig;
   const {title, logo = {}, links = []} = navbar;
 
   const showSidebar = useCallback(() => {
@@ -137,14 +137,12 @@ function Navbar() {
                 unchecked: <Sun />,
               }}
             />
-            {algolia && (
-              <div className="navbar__search" key="search-box">
-                <SearchBar
-                  handleSearchBarToggle={setIsSearchBarExpanded}
-                  isSearchBarExpanded={isSearchBarExpanded}
-                />
-              </div>
-            )}
+            <div className="navbar__search" key="search-box">
+              <SearchBar
+                handleSearchBarToggle={setIsSearchBarExpanded}
+                isSearchBarExpanded={isSearchBarExpanded}
+              />
+            </div>
           </div>
         </div>
         <div

website/docs/theme-classic.md

@@ -0,0 +1,51 @@
+---
+id: theme-classic
+title: Classic Theme Configuration
+---
+
+_This section is a work in progress._
+
+## Navbar
+
+### Navbar Title & Logo
+
+You can add a logo and title to the navbar via `themeConfig.navbar`. Logo can be placed in [static folder](static-assets.md).
+
+```js
+// docusaurus.config.js
+module.exports = {
+  themeConfig: {
+    navbar: {
+      title: 'Site Title',
+      logo: {
+        alt: 'Site Logo',
+        src: 'img/logo.svg',
+      },
+    }
+}
+```
+
+### Navbar Links
+
+You can add links to the navbar via `themeConfig.navbar.links`:
+
+```js
+// docusaurus/config.js
+module.exports = {
+  themeConfig: {
+    navbar: {
+      links: [
+        {
+          to: 'docs/docusaurus.config.js',
+          label: 'docusaurus.config.js',
+          position: 'left',
+        },
+        // ... other links
+      ],
+    }
+}
+```
+
+Outbound links automatically get `target="_blank" rel="noopener noreferrer"`. You can offer `target` and `rel` to customize the attributes:
+
+## Footer

website/sidebars.js

@@ -34,7 +34,7 @@ module.exports = {
       {
         type: 'category',
         label: 'Themes',
-        items: ['using-themes', 'advanced-themes'],
+        items: ['using-themes', 'advanced-themes', 'theme-classic'],
       },
       'presets',
     ],