Go 1.8 Template Execute Output Inconsistent
Update: This issue seems fixed in Go 1.8.1.
I found a bug in Go 1.8 template package (text/template & html/template), which output inconsistent HTML after ExecuteTemplate. Sometimes I get correct HTML output, and sometimes not. After I downgrade the Go version to 1.7.5, everything works fine without problem.
The tempaltes (total 4 files) I use:
theme/template/layout/layout.html
{{- define "layout" -}}
<!doctype html>
<html prefix="og: http://ogp.me/ns#">
<head>
<meta charset="utf-8">
<title>วัดป่าโพธิญาณ</title>
<meta name="description" content="วัดป่าโพธิญาณ - สาขา 8 วัดหนองป่าพง">
<meta name="keywords" content="วัดเขื่อน">
<meta name="viewport" content="width=device-width, initial-scale=1">
{{template "metaog" .}}
</head>
<body>
{{block "content" .}}{{end}}
{{template "footer" .}}
</body>
</html>
{{- end -}}
theme/template/layout/includes/metaog.html
{{- define "metaog" -}}
<meta property="og:title" content="วัดป่าโพธิญาณ">
<meta property="og:type" content="website">
<meta property="og:description" content="วัดป่าโพธิญาณ - สาขา 8 วัดหนองป่าพง">
<meta property="og:image" content="{{.OgImage}}">
<meta property="og:url" content="{{.OgUrl}}">
<meta property="og:locale" content="{{.OgLocale}}">
<meta property="og:locale:alternate" content="en_US">
<meta property="og:locale:alternate" content="zh_TW">
{{- end -}}
theme/template/layout/includes/footer.html
{{- define "footer" -}}
<div>Powered by
<a href="https://golang.org/">Go</a>
</div>
{{- end -}}
theme/template/index.html
{{- template "layout" .}}
{{define "content" -}}
<div>Hello World!</div>
<div>Template Inheritance in Go html/template</div>
{{- end -}}
The correct HTML output should be:
<!doctype html>
<html prefix="og: http://ogp.me/ns#">
<head>
<meta charset="utf-8">
<title>วัดป่าโพธิญาณ</title>
<meta name="description" content="วัดป่าโพธิญาณ - สาขา 8 วัดหนองป่าพง">
<meta name="keywords" content="วัดเขื่อน">
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta property="og:title" content="วัดป่าโพธิญาณ">
<meta property="og:type" content="website">
<meta property="og:description" content="วัดป่าโพธิญาณ - สาขา 8 วัดหนองป่าพง">
<meta property="og:image" content="https://upload.wikimedia.org/wikipedia/commons/d/df/Dharma_Wheel.svg">
<meta property="og:url" content="https://siongui.github.io/watpah/">
<meta property="og:locale" content="th_TH">
<meta property="og:locale:alternate" content="en_US">
<meta property="og:locale:alternate" content="zh_TW">
</head>
<body>
<div>Hello World!</div>
<div>Template Inheritance in Go html/template</div>
<div>Powered by
<a href="https://golang.org/">Go</a>
</div>
</body>
</html>
Sometime I get the following output in Go 1.8 template package:
<!doctype html>
<html prefix="og: http://ogp.me/ns#">
<head>
<meta charset="utf-8">
<title>วัดป่าโพธิญาณ</title>
<meta name="description" content="วัดป่าโพธิญาณ - สาขา 8 วัดหนองป่าพง">
<meta name="keywords" content="วัดเขื่อน">
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta property="og:title" content="วัดป่าโพธิญาณ">
<meta property="og:type" content="website">
<meta property="og:description" content="วัดป่าโพธิญาณ - สาขา 8 วัดหนองป่าพง">
<meta property="og:image" content="https://upload.wikimedia.org/wikipedia/commons/d/df/Dharma_Wheel.svg">
<meta property="og:url" content="https://siongui.github.io/watpah/">
<meta property="og:locale" content="th_TH">
<meta property="og:locale:alternate" content="en_US">
<meta property="og:locale:alternate" content="zh_TW">
</head>
<body>
<div>Powered by
<a href="https://golang.org/">Go</a>
</div>
</body>
</html>
Interestingly, some one report that there is some problem with Go 1.8 sync/atomic package [2]. Not sure whether it's the same issue or not?
References:
| [1] | generate html from template · siongui/wat-pah-photiyan@a872d70 · GitHub |
| [2] |