Concepts

Body

Request body parsing (`ctx.body`) and body validation via `SCHEMA`.

Body

ctx.body contains the parsed request body for non-GET/HEAD requests.

Parsing

Legonode parses the incoming body (for example, JSON) and sets ctx.body before middleware/handler execution.

Validation with SCHEMA

If you define SCHEMA.body in your route file:

  • Legonode validates ctx.body before the handler runs
  • on success, ctx.body is replaced with the validated/coerced value
  • on failure, Legonode returns a 400 with validation error details

Query

Query string parameters (`ctx.query`) parsed from the request URL, with validation/coercion via `SCHEMA`.

Schema

Route validation schemas (`SCHEMA`, `GET_SCHEMA`...) and response schemas (`RESPONSE_SCHEMA`, `GET_RESPONSE_SCHEMA`...).

On this page

Body
Parsing
Validation with SCHEMA