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This article is about how to write the overall design and data model of online forums based on Go. The editor thinks it is very practical, so I share it with you. I hope you can get something after reading this article.

1. Functional requirements

Without saying much, let's get to the point. Our online forum project is modeled on the Google online forum.

Therefore, this online forum needs to have user authentication functions (registration, login, exit, etc.) before authenticated users can create new groups and post topics in the groups. Visitors can view the list of groups on the home page of the forum and go to the specified group page to view the corresponding topic information.

2. Technical scheme

The overall function is very simple, and then we design the technical solution according to the functional requirements.

In fact, it is a very typical MVC architecture. Take the group details page as an example, assume that the corresponding URL is http://chitchat.test/thread/read?id=123, where chitchat.test is the request domain name, thread/read is the request route (view group ID), and id=123 is the request parameter (group ID). Determine the server IP where the application is located by the domain name, and determine the application process by port number (not explicitly shown here, generally default is port 80). After the application receives the request, it distributes the request to the specified processor method through routing (this is what the previously introduced router, or multiplexer, does, and the router is the entry of the entire application request distribution). Query the database through the request parameters, and then send the view response to the requesting user. If the database query has no results, a 404 response is returned. Here, the database assumes the role of M (Model), the view response assumes the role of V (View), and the processor method assumes the role of C (Controller):

In the figure above, Client represents the user who initiates the request from the client. In the virtual box, it is deployed on the online forum application started by the server. Multiplexer represents the router (such as gorilla/mux), Handler code processor / processor method, database operation is located in the processor method, and Templates represents the view template compiled by the template engine that is finally shown to the user.

The request / response model for other pages and operations is consistent with this and will not be repeated.

So we need to write code locally according to the MVC architecture based on the business process, and finally compile and package the tested application code, deploy it to a remote server (so that it can be accessed by ordinary users), and start the application, waiting for the client request, so that the whole application development process is completed. Students who have previous experience in the development and deployment of complete PHP projects should be very familiar with the whole process, as is the case with Go Web projects, just because of the static language and implementation mechanism, there are some differences in some details, for example, there is no need for additional HTTP servers such as php-fpm and nginx, reverse proxy servers, and Go applications are deployed as a single file. The deployment of static resources and view templates is different from traditional dynamic languages.

3. Data model

After the overall technical solution is finalized, we will write the code according to the process, and before that, we need to determine the data model.

Based on our previously developed requirements, at least three models are required:

User (User)

Group (Thread)

Theme (Post)

In addition, when we develop this project, we will also store the user session (Session) in the database, so we need an additional session model. In addition, in order to simplify the application, we will not really manage the rights of the user like the Google online forum. The whole application contains only one user type and has all the operation rights:

The above is how to write the overall design and data model of the online forum based on the Go language. The editor believes that there are some knowledge points that we may see or use in our daily work. I hope you can learn more from this article. For more details, please follow the industry information channel.

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