Method FallbackView

context/context.go:3905–3925

FallbackView registers one or more fallback views for a template or a template layout. When View cannot find the given filename to execute then this "provider" is responsible to handle the error or render a different view. Usage: FallbackView(iris.FallbackView("fallback.html")) FallbackView(iris

(providers ...FallbackViewProvider)

//	  [...custom logic e.g. ctx.View("fallback", err.Data)]
//	})
func (ctx *Context) FallbackView(providers ...FallbackViewProvider) {
	key := ctx.app.ConfigurationReadOnly().GetFallbackViewContextKey()
	if key == "" {
		return
	}

	v := ctx.values.Get(key)
	if v == nil {
		ctx.values.Set(key, providers)
		return
	}

	// Can register more than one.
	storedProviders, ok := v.([]FallbackViewProvider)
	if !ok {
		return
	}

	storedProviders = append(storedProviders, providers...)
	ctx.values.Set(key, storedProviders)
}

// View renders a template based on the registered view engine(s).
// First argument accepts the filename, relative to the view engine's Directory and Extension,