HTML Over the Wire
Forms and validation
Lesson 3 of 5
The POST round trip has two outcomes — success swaps in the new row, failure re-renders the form fragment with inline errors and a 422 — and htmx 2 needs one config line to swap 422 bodies at all.
What you'll learn
- Handle the form POST round trip with two outcomes: success and validation failure
- Re-render the form partial with inline errors, returning 422 Unprocessable Entity
- Choose hx-target/hx-swap so both outcomes land in the right place
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