Server Side HTML Render snipper

serversidehtml.go

// TemplateField is a template helper for html/template that provides an <input> field
// populated with a CSRF token.
//
// Example:
//
//      // The following tag in our form.tmpl template:
//      {{ .csrfField }}
//
//      // ... becomes:
//      <input type="hidden" name="gorilla.csrf.Token" value="<token>">
//
func TemplateField(r *http.Request) template.HTML {
 if name, err := contextGet(r, formKey); err == nil {
  fragment := fmt.Sprintf(`<input type="hidden" name="%s" value="%s">`,
   name, Token(r))

  return template.HTML(fragment)
 }

 return template.HTML("")
}