I have a small webserver written in Golang which runs on a bunch of unix devices. I want the name of the device in the header of each page served by my webserver so that I can tell which device I'm looking at.
The webserver has half a dozen web pages, and they all use a nested header template. Like this:
<body>
{{template "header"}}
And the header.html file could be something like:
{{define "header"}}
<h1>Device Name is: {{.}}</h1>
{{end}}
I want the name of the device (which is obtained through os.HostName()) to be in the header- and I can't figure out how to do it easily.
What I can do is get the host name at the start of the program, and then pass this back to the HTML every time I call ExecuteTemplate. And as I say, there are around 6 pages, so 6 handlers where I'd have to pass this name back via ExecuteTemplate in my handler function like this. Like this:
func XYZHandler(w http.ResponseWriter, r *http.Request) {
type returnInfo struct {
Name string
}
XYZReturnInfo := returnInfo{Name: deviceName} // deviceName obtained at start of program
tmpl.ExecuteTemplate(w, "XYZ.html", returnInfo )
}
And then the HTML page injects that into the header using .Name.
But is there some way I can put that deviceName value into the header template once at the start of the program? So that then it gets nested into each page from then on?
I should add I'm parsing my .html files at startup too. Using ParseFiles.
