code: func (ctx *Context) RenderFromString(tplSrc string, data ...map[string]interface{}) {
  	var renderData map[string]interface{}
  	if len(data) == 0 {
  		renderData = make(map[string]interface{})
  	} else {
  		renderData = data[0]
  	}
  	renderData["xsrf_token"] = ctx.xsrfToken()
  	content, e := ctx.App.View.RenderFromString(ctx.templateLoader, tplSrc, renderData)
  	if e != nil {
  		panic(e)
  	}
  	ctx.Send(content)
  }
docs: // RenderFromString renders a input string.