Enhance navigation in your WordPress theme: Convert static HTML

If you have followed this series, you now have a working theme with template files uploaded to WordPress. In this tutorial, you'll continue working with the header.php file you created in Part 2. You will learn how to add a navigation menu that is editable through the WordPress menu admin screen. To do this, you will also need to create a new file for your theme: the function file.

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What do you need

To complete this tutorial you will need the following:

• Code Editor of Your Choice
• Browser for testing your work
• Local or remote WordPress installation
• If you are working locally, you will need MAMP, WAMP, or LAMP to run WordPress.
• If you work remotely, you will need to access your website via FTP and have an admin account on your WordPress installation.

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1.Registration Navigation Menu

To register a navigation menu, use the register_nav_menu() function, which you need to add to your theme's functions.php file.

Since your theme doesn't already have this file, you'll want to create one first.

In the theme folder, create a new blank file named functions.php.

Open the new file and add the following content to it:

<?php
function wptutsplus_register_theme_menu() {
    register_nav_menu( 'primary', 'Main Navigation Menu' );
}
add_action( 'init', 'wptutsplus_register_theme_menu' );
?>

You just created your theme’s first feature, so give yourself a pat on the back!

The function you created is named wptutsplus_register_theme_menu(), I added the wptutsplus prefix to the beginning of its name to ensure that the name is unique and does not match any of the registered Other functions conflict through plugins you may be running on your site.

This function includes register_nav_menu() WordPress function, used to create menus. Your function will then be activated via the init action hook, which means WordPress will run your function on initialization.

NOTE: You must activate such functions via the correct hook, otherwise they will not work.

register_nav_menu()The function has two parameters:

• One of these parameters includes the location of the menu. In this example, we'll call that location 'primary'. You will add this to your header.php file later so WordPress displays the correct menu.
• The second parameter is the description of the menu. In this case, 'Main Navigation Menu'. This will be visible in the Menu admin screen.

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2. Set navigation menu

You now have access to the Menu dashboard screen, which was previously unavailable because your theme did not have a registered menu. It's not perfect at the moment, but we'll change it soon:

As you create pages, posts, and other content, you can add them to the navigation menu from this screen. I will add two new pages called "Blog" and "About". I will specify the Blog page as the page where my posts will appear via the Settings screen. You can create any page you like.

After completing this operation, return to the "Menu" screen to edit the menu and add a new page. After dragging the new page to the menu, click Create Menu to create the new menu.

Finally, check "Main Navigation Menu" under "Theme Location" to ensure that the menu will appear as the main menu you just registered and save the menu.

NOTE: Always remember to save your menu after making any changes to it - unlike widgets, WordPress does not automatically save menus.

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3. 将菜单添加到您的主题

目前，此菜单在您的网站上仍然不可见；您需要将菜单添加到头文件中才能实现此目的。

打开主题的 header.php 文件并找到以下代码：

<nav class="menu main">
    <?php /*  Allow screen readers / text browsers to skip the navigation menu and get right to the good stuff */ ?>
    <div class="skip-link screen-reader-text">
        <a title="Skip to content" href="#content">Skip to content</a>
    </div>
    <ul>
        <li>
            <a href="#">Home</a>
        </li>
        <li>
            <a href="#">Latest news</a>
        </li>
        <li>
            <a href="#">Featured articles</a>
        </li>
    </ul>
</nav><!-- .main -->

并将其替换为：

<nav class="menu main">
    <?php /*  Allow screen readers / text browsers to skip the navigation menu and get right to the good stuff */ ?>
    <div class="skip-link screen-reader-text">
        <a title="Skip to content" href="#content">Skip to content</a>
    </div>
    <?php wp_nav_menu( array( 'container_class' => 'main-nav', 'theme_location' => 'primary' ) ); ?>
</nav><!-- .main -->

这将添加您在主题中的此位置注册的导航菜单，使用 wp_nav_menu() 函数并指定 'primary' （您在注册时为菜单指定的位置）为'主题位置'。

这现在反映在我网站的导航菜单中：

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摘要：菜单不仅仅用于网站标题！

在本教程中，您学习了如何注册导航菜单、向其中添加项目以及将其添加到网站标题。

需要注意的是，菜单不仅仅必须位于网站标题中。您可以在多个位置添加菜单，包括：

• 侧边栏 - 可能是网站某个部分的部分菜单或当前页面的子页面列表
• 页脚 - “小字体”页面或最常访问的页面的菜单。
• 在主导航下方 - 也许是主导航下方的部分菜单。

您可以通过三种方式之一在主题中的更多位置添加菜单。

我按照难度升序列出了它们：

• 通过“菜单”管理屏幕创建额外的菜单，然后使用“自定义菜单”小部件将它们显示在主题中具有小部件区域的任何位置
• 通过“菜单”管理屏幕创建额外的菜单，然后将它们添加到主题的代码中，如上面所做的那样。在本例中，您向 wp_nav_menu() 函数调用的数组添加一个附加参数，指定 'menu' 参数作为您为创建的每个菜单指定的名称。
• 使用 register_nav_menus() 函数注册多个菜单，并将它们添加到主题中的相关位置，如上所述

为什么不尝试一下呢？

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资源

• 导航菜单指南
• register_nav_menu() 函数
• wp_nav_menu() 函数

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