Access out of loop value inside golang template's loop

Question

I have this struct :

type Site struct {     Name string     Pages []int } 

I pass an instance of Site to a template.

If I want to write a list of all pages, I do

{{range .Pages}}     <li><a href="{{.}}">{{.}}</a></li> {{end}} 

Now, what's the simplest way to use the Name field inside the loop (for example to change the href to Name/page) ?

Note that a solution based on the fact that the external object is the global one that was passed to the template would be OK.

Answer 1

You should know that the variable passed in to the template is available as $.

{{range .Pages}}     <li><a href="{{$.Name}}/{{.}}">{{.}}</a></li> {{end}} 

(See the text/template documentation under "Variables".)

Answer 2

What about:

{{$name := .Name}} {{range $page := .Pages}}     <li><a href="{{$name}}/{{$page}}">{{$page}}</a></li> {{end}} 

Or simply make Pages a map with Name as value?

type Site struct {     Pages map[string]string }   {{range $page, $name := .Pages}}     <li><a href="{{$name}}/{{$page}}">{{$page}}</a></li> {{end}}