Method GetViewData

context/context.go:3768–3783

GetViewData returns the values registered by `context#ViewData`. The return value is `map[string]interface{}`, this means that if a custom struct registered to ViewData then this function will try to parse it to map, if failed then the return value is nil A check for nil is always a good practise if

()

// Similarly to `viewData := ctx.Values().Get("iris.view.data")` or
// `viewData := ctx.Values().Get(ctx.Application().ConfigurationReadOnly().GetViewDataContextKey())`.
func (ctx *Context) GetViewData() map[string]interface{} {
	if v := ctx.values.Get(ctx.app.ConfigurationReadOnly().GetViewDataContextKey()); v != nil {
		// if pure map[string]interface{}
		if viewData, ok := v.(Map); ok {
			return viewData
		}

		// if struct, convert it to map[string]interface{}
		if structs.IsStruct(v) {
			return structs.Map(v)
		}
	}

	// if no values found, then return nil
	return nil
}

// FallbackViewProvider is an interface which can be registered to the `Party.FallbackView`
// or `Context.FallbackView` methods to handle fallback views.