Function FromQuery

extractors/extractors.go:383–395

FromQuery creates an Extractor that retrieves a value from a specified query parameter in the request. Query parameters are extracted from the URL query string (e.g., ?key=value&foo=bar). SECURITY WARNING: Extracting values from URL query parameters can leak sensitive information through: - Server

(param string)

//	// URL: /api/data?token=abc123&format=json -> Output: "abc123"
//	// URL: /api/data?format=json -> Output: ErrNotFound
func FromQuery(param string) Extractor {
	return Extractor{
		Extract: func(c fiber.Ctx) (string, error) {
			value := c.Query(param)
			if value == "" {
				return "", ErrNotFound
			}
			return value, nil
		},
		Key:    param,
		Source: SourceQuery,
	}
}

// FromCustom creates an Extractor using a provided function.
// This allows for custom extraction logic beyond the built-in extractors.