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add part function in html.go

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layout.html 
 <head>
    {{ part "css" }}
</head>

home/index.html
{{ define "home/index-css"}}
<link rel="stylesheet" type="text/css" href="/public/css/home/index.css" />
{{ end }} 

in html/temple  the defined block is global variable， so the way of "{{ block "css" }}" in layout and "{{ define "css"}}{{end}}" in home/index.html and home/about.html   just one definition work, others will be over coved。  No use！！！

This part function like extend the block in layout.

Former-commit-id: c3e26a8227808cf2d1dc7121bcffe1a98ce3e678
This commit is contained in:
visgoods 2018-10-25 12:57:57 +08:00 committed by GitHub
parent 8950ae7bb9
commit de5be10955
1 changed files with 12 additions and 0 deletions
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12
view/html.go
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@ -44,6 +44,9 @@ var emptyFuncs = template.FuncMap{
"yield": func() (string, error) {
return "", fmt.Errorf("yield was called, yet no layout defined")
},
"part": func() (string, error) {
return "", fmt.Errorf("block was called, yet no layout defined")
},
"partial": func() (string, error) {
return "", fmt.Errorf("block was called, yet no layout defined")
},
@ -389,6 +392,15 @@ func (s *HTMLEngine) layoutFuncsFor(name string, binding interface{}) {
// Return safe HTML here since we are rendering our own template.
return template.HTML(buf.String()), err
},
"part": func(partName string) (template.HTML, error) {
nameTemp := strings.Replace(name, ".html", "", -1)
fullPartName := fmt.Sprintf("%s-%s", nameTemp, partName)
buf, err := s.executeTemplateBuf(fullPartName, binding)
if err != nil {
return "", nil
}
return template.HTML(buf.String()), err
},
"current": func() (string, error) {
return name, nil
},