Building A Database Management TUI With Ratatui And Rust

GitHub: rainfrog – A TUI for MySQL & SQLite

Ratatui, a Rust library for building Terminal User Interfaces (TUIs), has been used to create rainfrog, a lightweight database management tool supporting MySQL and SQLite. This project demonstrates how Rust can be leveraged to build efficient, cross-platform terminal applications—even running on a BlackBerry KeyOne via Termux.

You Should Know:

1. Setting Up Rust & Ratatui

To start building a TUI with Ratatui, install Rust and add Ratatui as a dependency:

curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh 
cargo add ratatui crossterm sqlx --features sqlx/mysql,sqlx/sqlite

2. Basic TUI Structure

A minimal Ratatui app includes:

Event handling (keyboard/mouse)
State management (for DB connections)
UI rendering (widgets like tables, lists)

use ratatui::{Terminal, backend::CrosstermBackend};

fn main() -> Result<(), Box<dyn std::error::Error>> { 
let stdout = std::io::stdout(); 
let backend = CrosstermBackend::new(stdout); 
let mut terminal = Terminal::new(backend)?;

loop { 
terminal.draw(|f| { 
// Render UI here 
})?; 
} 
}

3. Connecting to Databases

Using SQLx, you can query MySQL/SQLite:

use sqlx::{MySqlPool, SqlitePool};

async fn query_mysql() -> Result<(), sqlx::Error> { 
let pool = MySqlPool::connect("mysql://user:pass@localhost/db").await?; 
let rows = sqlx::query!("SELECT  FROM users").fetch_all(&pool).await?; 
Ok(()) 
}

4. Running on Termux (Android/BlackBerry)

1. Install Termux from F-Droid.

2. Set up Rust:

pkg install rust 
cargo install --path .

3. Run your TUI app directly.

What Undercode Say

Terminal-based tools like rainfrog highlight Rust’s efficiency in low-resource environments. Key takeaways:
– Rust + Ratatui = High-performance TUIs.
– SQLx enables seamless DB interactions.
– Termux bridges the gap for mobile devs.

Try these commands:

 List running processes (Linux) 
ps aux | grep -i rust

Check network connections (Windows) 
netstat -ano

Monitor system resources (Linux) 
htop

Prediction

Expect more Rust-powered TUIs replacing traditional GUI tools, especially in DevOps and embedded systems.

Expected Output:

A functional TUI database manager running even on legacy hardware.