英文:
Google Go Templates for Web Development with two dimensional array
问题
我有一个带有二维数组的结构体示例：
type Foo struct{
testArray[9][9] int
}
我想通过模板来访问它。
例如：
tmpl.Execute(w, foo) // foo是指向Foo结构体的指针，w是解析的HTML网站
我如何在模板中访问数组？对于旧的模板包中的一维数组，代码如下：
{.repeated section testArray}
<p>{@}</p>
{.end}
但是对于二维数组，语法是什么样的？例如，我必须访问testArray[0][0]。
英文:
I have a struct example with a two dimensinal array:
type Foo struct{
testArray[9][9] int
}
I would like to access it by a template.
For example:
tmpl.Execute(w, foo) //foo is a pointer to Foo struct and w is the parsed html site
How can I access the array in the template? For a one dimensional array with the old template package there is the code:
{.repeated section testArray}
<p>{@}</p>
{.end}
but what is the syntax for a two dimension array? For example I must access testArray[0][0]
答案1
得分: 4
我已经意外地用新的模板包解决了你的问题。但是也许旧的模板也可以工作得类似。你尝试过类似这样的东西吗：
{.repeated section testArray}<p>{.repeated section @}{@} {.end}</p>{.end}
（未经测试）
无论如何，这是我用新的模板包解决的方案。也许你可以以某种方式使用它 
package mainimport ("os""text/template")type Foo struct {Data [9][9]int}func main() {tmpl := template.Must(template.New("example").Parse(`<table>{{range .Data}}<tr>{{range .}}<td>{{.}}</td>{{end}}</tr>{{end}}`))foo := new(Foo)foo.Data[2][1] = 4tmpl.Execute(os.Stdout, foo)}
英文:
I have solved your problem accidentally with the new template package. But maybe the old one works similar. Have you tried something like:
{.repeated section testArray}<p>{.repeated section @}{@} {.end}</p>{.end}
(untested)
Anyway, here is my solution with the new template package. Maybe you can use it somehow
package mainimport ("os""text/template")type Foo struct {Data [9][9]int}func main() {tmpl := template.Must(template.New("example").Parse(`<table>{{range .Data}}<tr>{{range .}}<td>{{.}}</td>{{end}}</tr>{{end}}`))foo := new(Foo)foo.Data[2][1] = 4tmpl.Execute(os.Stdout, foo)}
答案2
得分: 2
package main
import (
"net/http"
"text/template"
)
type Foo struct {
Array [9][9]int
}
func handler(w http.ResponseWriter, r *http.Request) {
var foo Foo
for i := 0; i < len(foo.Array); i++ {for j := 0; j < len(foo.Array); j++ {foo.Array[i][j] = j}}tmpl := template.Must(template.New("example").Parse(`<html><body><table>{{ $a := .Array }}{{ range $a }}<tr>{{ $elem := . }}{{ range $elem }}{{ printf "<td>%d<td>" . }}{{ end}}</tr>{{end}}</table></body></html>`))tmpl.Execute(w, foo)
}
func main() {
bindAddress := "127.0.0.1:8080"
http.HandleFunc("/", handler)http.ListenAndServe(bindAddress, nil)
}
英文:
this little sample should help you.
package mainimport ("net/http""text/template")type Foo struct {Array [9][9]int}func handler(w http.ResponseWriter, r *http.Request) {var foo Foofor i := 0; i < len(foo.Array); i++ {for j := 0; j < len(foo.Array); j++ {foo.Array[i][j] = j}}tmpl := template.Must(template.New("example").Parse(`<html><body><table>{{ $a := .Array }}{{ range $a }}<tr>{{ $elem := . }}{{ range $elem }}{{ printf "<td>%d<td>" . }}{{ end}}</tr>{{end}}</table></body></html>`))tmpl.Execute(w, foo)}func main() {bindAddress := "127.0.0.1:8080"http.HandleFunc("/", handler)http.ListenAndServe(bindAddress, nil)}
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