Function ExampleValueBinder_BindErrors

binder_external_test.go:17–53

()

)

func ExampleValueBinder_BindErrors() {
	// example route function that binds query params to different destinations and returns all bind errors in one go
	routeFunc := func(c *echo.Context) error {
		var opts struct {
			IDs    []int64
			Active bool
		}
		length := int64(50) // default length is 50

		b := echo.QueryParamsBinder(c)

		errs := b.Int64("length", &length).
			Int64s("ids", &opts.IDs).
			Bool("active", &opts.Active).
			BindErrors() // returns all errors
		if errs != nil {
			for _, err := range errs {
				bErr := err.(*echo.BindingError)
				log.Printf("in case you want to access what field: %s values: %v failed", bErr.Field, bErr.Values)
			}
			return fmt.Errorf("%v fields failed to bind", len(errs))
		}
		fmt.Printf("active = %v, length = %v, ids = %v", opts.Active, length, opts.IDs)

		return c.JSON(http.StatusOK, opts)
	}

	e := echo.New()
	c := e.NewContext(
		httptest.NewRequest(http.MethodGet, "/api/endpoint?active=true&length=25&ids=1&ids=2&ids=3", nil),
		httptest.NewRecorder(),
	)

	_ = routeFunc(c)

	// Output: active = true, length = 25, ids = [1 2 3]
}

func ExampleValueBinder_BindError() {
	// example route function that binds query params to different destinations and stops binding on first bind error