WIP

formscanner.go

@@ -0,0 +1,43 @@
+package webutil
+
+import (
+	"errors"
+	"fmt"
+	"net/url"
+)
+
+var ErrUnsupportedType = errors.New("unsupported type")
+
+type FormScanner struct {
+	form url.Values
+	err  error
+}
+
+func NewFormScanner(form url.Values) *FormScanner {
+	return &FormScanner{form: form}
+}
+
+func (s *FormScanner) Scan(name string, val any) *FormScanner {
+	if s.err != nil {
+		return s
+	}
+
+	switch v := val.(type) {
+	case *bool:
+		*v = s.form.Has(name)
+	default:
+		if err := scan(s.form.Get(name), v); err != nil {
+			s.err = fmt.Errorf("Error in field %s: %w", name, err)
+		}
+	}
+
+	return s
+}
+
+func (s *FormScanner) Error() error {
+	return s.err
+}
+
+func (s *FormScanner) SetError(err error) {
+	s.err = err
+}