英文:
How to not escape in HTML templates
问题
尝试使用嵌入附件的cid:来渲染用于通过电子邮件发送的HTML模板。问题是，Go语言会进行转义处理，我无法做任何操作。
tplVars := map[string]interface{}{
"Dog": "cid:dog.png",
"Cat": "cid:cat.png",
}
我的测试模板大致如下：
Dog: <img src="{{.Dog}}">
Cat: {{.Cat}}
输出结果为：
Dog: <img src="#ZgotmplZ">
Cat: cid:cat.png
如果文本位于属性上下文之外，它会被正确评估，但当它是src属性时，它总是变成错误字符串。我还尝试将值从string更改为template.HTMLAttr，但没有任何效果。cid的值始终被评估为错误输出#ZgotmplZ。
英文:
Trying to render HTML templates for sending via email with embedded attachments with cid:. Problem is, that Go does escaping and I cannot do anything.
tplVars := map[string]interface{}{
"Dog": "cid:dog.png",
"Cat": "cid:cat.png",
}
My testing template looks more less like this:
Dog: <img src="{{.Dog}}">
Cat: {{.Cat}}
Output is:
Dog: <img src="#ZgotmplZ">
Cat: cid:cat.png
If text is outside attribute context, it is evaluated correctly, but when it is an src attribute it always become that error string. I tried also change value from string to template.HTMLAttr but nothing happen. Cid value is always evaluated to that error output #ZgotmplZ.
答案1
得分: 17
问题在于src属性并不被严格地视为属性，而是作为一个URL处理。如果你将它从string更改为template.URL，它就可以正常工作。
tplVars := map[string]interface{}{
"Dog": template.URL("cid:dog.png"),
"Cat": "cid:cat.png",
}
https://play.golang.org/p/ZN27nGnUE9
英文:
The issue is that the src attribute isn't treated strictly as an attribute, but as a URL. If you change it from a string to a template.URL it works just fine.
tplVars := map[string]interface{}{
"Dog": template.URL("cid:dog.png"),
"Cat": "cid:cat.png",
}
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