OpenWrt Web Interface Development Tutorial47

OpenWrt is a powerful open-source router operating system that provides extensive customization options. One of the key aspects of OpenWrt is its web interface, which allows users to manage and configure their routers from a graphical user interface (GUI). In this tutorial, we will explore the basics of developing custom pages for the OpenWrt web interface.

Prerequisites

To follow this tutorial, you will need the following:* A working knowledge of HTML, CSS, and JavaScript
* A basic understanding of Linux and OpenWrt
* A text editor or IDE
* Access to an OpenWrt-powered router

Creating a New Web Interface Page

To create a new web interface page in OpenWrt, you need to create a new Lua file in the /www directory of your OpenWrt installation. Lua is the scripting language used by OpenWrt's web interface. The filename of your Lua file should have a .lua extension.

For example, let's create a new page called . We can create this file using a text editor or an IDE. The following code snippet shows the basic structure of a Lua file for an OpenWrt web interface page:```lua
local function index(self)
return "My Page"
end
return {
index = index
}
```

In this Lua file, the index function is the main function that generates the HTML content for the page. The return statement at the end of the file returns a table containing the index function.

Registering Your Page

Once you have created the Lua file for your new page, you need to register it with the OpenWrt web interface. This is done by adding an entry to the /etc/uci-defaults/luci file. The following code snippet shows how to register our mypage page:```
config main 'mypage'
option path '/mypage'
option name 'My Page'
```

Here, we have registered a new menu item called My Page, which links to the /mypage URL. The path option specifies the URL of your page, and the name option specifies the name that will be displayed in the web interface menu.

Styling Your Page

To style your web interface page, you can use CSS files. CSS files can be stored in the /www/css directory of your OpenWrt installation. The following code snippet shows a simple CSS file that styles our mypage page:```css
body {
font-family: Arial, sans-serif;
font-size: 14px;
}
h1 {
color: #0000FF;
}
```

In your Lua file, you can include the CSS file using the () function. The following code snippet shows how to include the file:```lua
local function index(self)
("Content-Type: text/html")
("Cache-Control: no-cache")
return "My Page"
end
```

Adding JavaScript

You can also add JavaScript to your web interface pages. JavaScript files can be stored in the /www/js directory of your OpenWrt installation. The following code snippet shows a simple JavaScript file that adds some interactivity to our mypage page:```javascript
("my-button").addEventListener("click", function() {
alert("Button clicked!");
});
```

In your Lua file, you can include the JavaScript file using the () function. The following code snippet shows how to include the file:```lua
local function index(self)
("Content-Type: text/html")
("Cache-Control: no-cache")
return "My PageClick me!"
end
```

Conclusion

In this tutorial, we explored the basics of developing custom pages for the OpenWrt web interface. We covered creating a new Lua file, registering your page, styling your page with CSS, and adding JavaScript for interactivity. By following these steps, you can create your own custom web pages to extend the functionality of your OpenWrt-powered router.

2025-02-22

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