E0326: Two handles share a name

A page backed by a component gives its component one handle per exported field (its json name, first letter lower-cased: Q → live.q) and per callable method (Cancel → live.cancel). Two fields, or a field and a method, would have the same handle. Reported by vuka vet, the editor, and at boot, and by vukavet.

Wrong

type Orders struct {
	ui.Live
	Cancel bool
}

func (o *Orders) Cancel(ctx context.Context, id int64) error { … }

// A Go type can't have a field and a method of one name; two fields can
// share a json name:
type Orders struct {
	ui.Live
	Q     string `json:"q"`
	Query string `json:"q"`
}

Right

type Orders struct {
	ui.Live
	CanCancel bool
}

func (o *Orders) Cancel(ctx context.Context, id int64) error { … }

type Orders struct {
	ui.Live
	CanCancel bool
}

func (o *Orders) Cancel(ctx context.Context, id int64) error { return nil }

func (o *Orders) Render() ui.Node { return ui.IslandPage(o) }

func NewOrders() *Orders { return &Orders{} }

func init() { web.Routes.Live("/orders", NewOrders, ui.Island()) }