WebApp.rs

A web application completely written in Rust

Target of this project is to write a complete web application including backend and frontend within Rust.

Rust wasm             Rust app
in browser <- REST -> HTTP Server -- actix-web
 |                         |
Yew                   Diesel (ORM) -> PostgreSQL

Blog Posts

1. A Web Application completely in Rust.
2. Lessons learned on writing web applications completely in Rust.

Build

The following build dependencies needs to be fulfilled to support the full feature set of this application:

• wasm-pack
• rollup
• diesel_cli
• postgresql (libpg)
• A container runtime, like podman

The app consist of a frontend and a backend. For getting started with hacking, the backend can be tested via make run-backend, whereas the frontend can be tested with make run-frontend. You can adapt the application configuration within Config.toml if needed.

This installs build requirements, rust and wasm-pack, on Ubuntu or Debian.

> sudo apt-get update
> sudo apt-get install -y pkg-config libssl-dev npm sudo wget
> wget https://sh.rustup.rs -O rustup-init
> sudo sh rustup-init -y
> cargo install wasm-pack
> sudo npm install -g rollup

This builds the project.

> git clone https://github.com/saschagrunert/webapp.rs.git
> cd webapp.rs
> make all

Run

make deploy uses podman to start a PostgreSQL container and the Rust backend container. If you wish to use docker instead of podman, set CONTAINER_RUNTIME=docker in the top of Makefile. Edit Config.toml if needed to set the backend url and PostgreSQL credentials:

[server]
url = "http://127.0.0.1:30080"
...
[postgres]
host = "127.0.0.1"
username = "username"
password = ""
database = "database"

Ensure the runtime dependencies are installed, and then start the two containers.

> sudo apt install -y postgresql-client
> cargo install diesel_cli --no-default-features --features "postgres"
> sudo make deploy

The application should now be accessible at http://127.0.0.1:30080. During development, you can start the containers separately, using make run-app to start only the rust backend container, and run-postgres to start only the PostgreSQL container.

If both the backend and frontend are running, you can visit the web application at http://127.0.0.1:30080. After the successful loading of the application you should see an authentication screen like this:

The login screen will accept any username and password that are equal, such as me (username) and me (password). There is currently no further user authentication yet, but non matching combination will result in an authentication failure. After the successfully login you should be able to see the content of the application:

The authentication should persist, it is even better after a manual page reload. Logging out of the application via the logout button should also work as intended.

Control Flow

The complete control flow of the application looks like this:

Contributing

You want to contribute to this project? Wow, thanks! So please just fork it and send me a pull request.

lib.rs:

The backend library