Sugar for Go templates
This is a very small abstraction layer on top of the default golang template engine.
At this stage only http/template, but that's just because I'm a bit slack, and I'll fix that soon.
All existing template code will work, then the following are added:
{{ extends "/base.html" }}
{{ define "content" }}
Blah
{{ end }}
Imports the named template.
The base golang template is the last one in the import chain. Rendering is done on the last 'extends' base in the chain, then the default package templating takes over.
base.html
<!DOCTYPE html>
<html>
<head>
<title>{{ template "title" }}</title>
{{ template "style" }}
</head>
</html>
{{ define "title" }}Default Title{{ end }}
view.html
{{ extends "/base.html" }}
{{ define "title" }}Hello World{{ end }}
Code
tpl.Render(w, "view.html", nil)
Produces
<!DOCTYPE html>
<html>
<head>
<title>Hello World</title>
</head>
</html>
Two things:
- The 'title' block in view.html is used, it overrides the 'default' in the base. No errors.
- The 'style' call in base.html is not defined anywhere, so it defaults to an empty string
In the standard package, the default value for "." when calling template is nil, in this package it defaults to the "." of the parent.
The value of SweeTpl.FuncMap is injected into every layer of the template tree automatically.
You can define your own loader - Interface sweetpl.TemplateLoader, has the method LoadTemplate(string) (string error) or there are two defined: Map loader - just a map[string]string of named template sources, and DirLoader which loads them by path from the filesystem (No checking for ../../../etc/ssh/keys yet, so be careful)
tpl := sweetpl.SweeTpl{
Loader: &sweetpl.DirLoader{
BasePath: templatePath,
},
FuncMap: template.FuncMap{
"asset": func(in string) string {
return "/" + in
},
},
}
tpl.Render(w, "view.html", "Hello World")