Rust and WASM for Form Validation

10 months ago

Rust and WebAssembly (WASM) have improved significantly, making them more accessible for backend engineers without requiring complex toolchains like Node and Webpack.
The tutorial demonstrates creating a project with a Rust web server (using Rocket) that serves HTML templates and a WASM component for form validation.
WASM is used for form validation to explore its capabilities, such as handling DOM events in Rust and sharing code between frontend and backend.
The project structure involves separate crates for the server and WASM components, with dependencies like `wasm-pack` and `wasm-bindgen` for WASM support.
The server setup includes Rocket for handling routes, form submissions, and rendering templates, with minimal dependencies for simplicity.
The WASM component is built to validate form inputs, leveraging browser-native validation while adding custom checks (e.g., domain validation for emails).
The tutorial highlights the trade-offs of WASM, such as larger binary sizes compared to JavaScript, but notes potential scalability benefits for larger projects.
A full example repository is provided for reference, and feedback on the approach is encouraged.

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