PublicDashboards: Variables refactor (#73476)

Co-authored-by: Juan Cabanas <juan.cabanas@grafana.com>
Co-authored-by: Ezequiel Victorero <ezequiel.victorero@grafana.com>
Co-authored-by: Ryan McKinley <ryantxu@gmail.com>

pkg/services/contexthandler/model/model.go

@@ -30,8 +30,8 @@ type ReqContext struct {
 	Logger         log.Logger
 	Error          error
 	// RequestNonce is a cryptographic request identifier for use with Content Security Policy.
-	RequestNonce          string
-	IsPublicDashboardView bool
+	RequestNonce               string
+	PublicDashboardAccessToken string
 
 	PerfmonTimer   prometheus.Summary
 	LookupTokenErr error
@@ -60,6 +60,10 @@ func (ctx *ReqContext) IsApiRequest() bool {
 	return strings.HasPrefix(ctx.Req.URL.Path, "/api")
 }
 
+func (ctx *ReqContext) IsPublicDashboardView() bool {
+	return ctx.PublicDashboardAccessToken != ""
+}
+
 func (ctx *ReqContext) JsonApiErr(status int, message string, err error) {
 	resp := make(map[string]interface{})
 	traceID := tracing.TraceIDFromContext(ctx.Req.Context(), false)