英文:
Template variable not resolving everywhere
问题
我正在使用Golang模板构建一个网站，并需要在页脚模板中显示一些文本。这是一个在header.html和index.html中解析的变量。
package main
import (
"fmt"
"html/template"
"log"
"net/http"
"github.com/gorilla/handlers"
"github.com/gorilla/mux"
)
type Data struct {
Title string
Field1 string
Field2 template.HTML
FooterField string
}
var tmpl *template.Template
func main() {
router := mux.NewRouter()
port := ":8085"
data := Data{}
data.Title = "Title"
data.FooterField = "This text does not appear in the footer template"
router.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
err := tmpl.ExecuteTemplate(w, "index", data)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
}
})
var err error
tmpl, err = template.ParseGlob("views/*")
if err != nil {
panic(err.Error())
}
router.PathPrefix("/").HandlerFunc(func(res http.ResponseWriter, req *http.Request) {
http.FileServer(http.Dir("./static/")).ServeHTTP(res, req)
})
fmt.Println("Server running on localhost" + port)
err = http.ListenAndServe(port, handlers.CompressHandler(router))
if err != nil {
log.Fatal(err)
}
}
在./views文件夹中有header.html：
{{define "header"}}<!doctype html><html lang="en"><head><meta charset="utf-8"><title>{{.Title}}</title></head><body><h1>Header template</h1><div>{{.FooterField}}</div>{{end}}
index.html：
{{define "index"}}{{template "header" . }}
<h1>Index template</h1>
<div>{{.FooterField}}</div>
{{template "footer"}}{{end}}
footer.html：
{{define "footer"}}<h1>Footer template</h1>
Missing FooterField->{{.FooterField}}</body></html>{{end}}
最后，在浏览器上打开http://localhost:8085/，输出应该是：
Header template
This text does not appear in the footer template
Index template
This text does not appear in the footer template
Footer template
Missing FooterField->
这段代码应该可以通过复制粘贴来重现。
你有什么问题吗？
英文:
I am building a website using Golang templates and needed to display some text in the footer template. It's a variable that resolves in header.html and index.html.
package main
import (
"fmt"
"html/template"
"log"
"net/http"
"github.com/gorilla/handlers"
"github.com/gorilla/mux"
)
type Data struct {
Title string
Field1 string
Field2 template.HTML
FooterField string
}
var tmpl *template.Template
func main() {
router := mux.NewRouter()
port := ":8085"
data := Data{}
data.Title = "Title"
data.FooterField = "This text does not appear in the footer template"
router.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
err := tmpl.ExecuteTemplate(w, "index", data)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
}
})
var err error
tmpl, err = template.ParseGlob("views/*")
if err != nil {
panic(err.Error())
}
router.PathPrefix("/").HandlerFunc(func(res http.ResponseWriter, req *http.Request) {
http.FileServer(http.Dir("./static/")).ServeHTTP(res, req)
})
fmt.Println("Server running on localhost" + port)
err = http.ListenAndServe(port, handlers.CompressHandler(router))
if err != nil {
log.Fatal(err)
}
}
And in the ./views I have header.html
{{define "header"}}<!doctype html><html lang="en"><head><meta charset="utf-8"><title>{{.Title}}</title></head><body><h1>Header template</h1><div>{{.FooterField}}</div>{{end}}
index.html
{{define "index"}}{{template "header" . }}
<h1>Index template</h1>
<div>{{.FooterField}}</div>
{{template "footer"}}{{end}}
footer.html
{{define "footer"}}<h1>Footer template</h1>
Missing FooterField->{{.FooterField}}</body></html>{{end}}
And finally the output in the browser on http://localhost:8085/
Header template
This text does not appear in the footer template
Index template
This text does not appear in the footer template
Footer template
Missing FooterField->
This code should be able to be reproduced simply by copying and pasting.
Any clue to what my issue is?
答案1
得分: 3
你没有向页脚模板传递任何内容。但是你将 . 传递给了页眉模板，所以你只能在那里看到 .FooterField 的值。
在 index.html 中将其更改为：{{template "footer" . }}
英文:
you are not passing anything to the footer template. But you pass . to the header template, so you see the value of .FooterField only there.
In index.html change it to: {{template "footer" . }}
通过集体智慧和协作来改善编程学习和解决问题的方式。致力于成为全球开发者共同参与的知识库，让每个人都能够通过互相帮助和分享经验来进步。
评论