text/template: missingkey=zero behaves different from html/template #70681
Comments
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your playground link works fine, are you saying if you run that same code in your local machine the tt output is suddenly different? it seems your screenshot is a browser “view source” so you have more code involved? maybe a typo? side note: you shouldn’t use text for html anyway? |
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Hi, here is thge code that is delivering the template result to my http handler... //go:embed *.html js/* css/* views/* models/*
var assets embed.FS
func Deliver(w http.ResponseWriter, path string, data ...any) {
content, err := assets.ReadFile(path)
if err != nil {
log.Error(err)
} else {
tpl, err2 := template.New(path).Option("missingkey=zero").Parse(string(content))
if err2 != nil {
log.Error(err2)
}
var arg any
if len(data) > 0 {
arg = data[0]
}
if ok := tpl.Execute(w, arg); ok != nil {
log.Error(ok)
}
}
}here is how i use it inside my handler... type Map = map[string]string
func (route Route) Root(w http.ResponseWriter, r *http.Request) {
assets.Deliver(w, "index.html", Map{})
} |
…r more context
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here is a example of what iam doin.. |
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Spoiler it works as expected, so seems its my program which does wrong things, i don't understand right now. Sorry i close this issue for now and go for bug hunt. |
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I found the issue. See my repo for a working example (i updated the code which reflects the current state, it shows the bug)... |
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looks like the same as #24963 |
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Duplicate of #24963 |
Go version
go version go1.23.4 linux/amd64
Output of
go envin your module/workspace:What did you do?
Parsing a template with help of
text/template, but themissingkey=zerooption behaves different fromhtml/template.A missing key in map[string]any is printed as
<no value>which is different from what i expect if i render the template with.Option("missingkey=zero").html/templatebehaves correct.See https://github.com/lirtistan/template_bug for a working example.
What did you see happen?
With
text/templatei get the following result...with
html/templatei get the correct result...also see attached screenshots...
here with
text/template...here with
html/template...What did you expect to see?
An output without , like that html example below
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