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Build web applications using Golang's web framework Buffalo

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Jun 24, 2023 am 10:27 AM

golangweb frameworkbuffalo

Buffalo is a web framework developed using Golang, which provides a solution for quickly developing web applications. In this article, we will introduce how to use Buffalo to build a web application.

Installing Buffalo

First, we need to install Buffalo locally. Buffalo provides a convenient command line tool through which you can build and run applications.

Before installation, make sure Golang and Node.js are installed. Then, enter the following command in the terminal:

go get -u -v github.com/gobuffalo/buffalo/buffalo

This will download and install Buffalo into your GOPATH.

Create new applications

Use the Buffalo command line tool to quickly create new applications. Enter the following command in the terminal:

buffalo new myapp

This will create a new application directory called "myapp" and Buffalo will generate some default directory and file structures for us.

Run the application

After creating the new application, we can start the web server locally using the following command:

buffalo dev

This command will be Start the web server locally and listen on port 3000. At this point, we can visit http://localhost:3000 in the browser to view the running status of the application.

Creating Routes

In web applications, routing is used to map URLs to different functions in the application. In Buffalo, routing can be created by:

app.GET("/", HomeHandler)

This code will route the HTTP GET request to a handler function named "HomeHandler".

Create a handler

After creating a route, you need to create a corresponding handler to handle the request for the route. In Buffalo, we can organize handlers by creating a subdirectory called "handlers".

In the handlers directory, we can create a file named "home.go", which contains the following code:

func HomeHandler(c buffalo.Context) error {
   return c.Render(200, r.HTML("home.html"))
}

This function is used to render the file named "home.html" HTML template.

Creating HTML templates

In Buffalo, you can use Go's built-in template language to create HTML templates. In the "templates" directory of the application, we can create a file called "home.html" that contains the following code:

<!DOCTYPE html>
<html>
   <head>
       <title>Welcome to My App</title>
   </head>
   <body>
   <h1 id="Hello-World">Hello, World!</h1>
   </body>
</html>

Run the application

After completing the above steps, we can use the following command to start the web server locally:

buffalo dev

Then enter http://localhost:3000 in the browser to view the running status of the application. If everything goes well, we should be able to see the "Hello, World!" message.

Deploying the Application

When we have completed the development and testing of the web application, we need to deploy it to the production environment. In Buffalo, you can use the following command to build a deployable binary:

buffalo build --env production

This command will generate an executable file in the "bin" directory. We can upload this file to the server and start it the same way as a local web server.

Conclusion:

In this article, we introduced how to use Buffalo to build web applications. By using Buffalo, we can quickly create and deploy high-performance web applications. If you haven't tried Buffalo yet, I recommend you give it a try. It might be ideal for your next project.

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