英文:
How to convert a map to html table in Go
问题
我是你的中文翻译助手，以下是你要翻译的内容：
我是Go语言的新手，正在练习，你能帮我将一个map转换成HTML表格吗？我有一个函数从一些REST端点获取数据，并返回一个根据端点返回结果大小可能变化的map。
type color struct {blue intred int}func fetchData() map[string]map[string]colour {}
打印这个函数的输出如下，但每次可能会有更多或更少的列：
map[joe:map[alex: {3 6} may:{2 6}] jena:map[fred: {1 2}]]
我想要一个像这样的HTML表格：
| 老师 | 学生 | 蓝色笔 | 红色笔 |
|---|---|---|---|
| joe | alex | 3 | 6 |
| may | 2 | 6 | |
| jena | fred | 1 | 2 |
英文:
I'm newbie in Go and practicing, could you please help to convert a map to an html table in GO?
I have a function that fetches some data from some rest end points and return a map that can vary in size based on the result I get back from the endpoints.
type color struct {blue intred int}func fetchData() map[string]map[string]colour {}
printing out the output of this function looks like this but can vary each time with more or less columns
map[joe:map[alex: {3 6} may:{2 6}] jena:map[fred: {1 2}]]
I would to have a html table like this:
| Teacher | Student | Blue Pens | Red Pens |
|---|---|---|---|
| joe | alex | 3 | 6 |
| may | 2 | 6 | |
| jena | fred | 1 | 2 |
答案1
得分: 5
我认为最简单的方法是使用html/template包。text/template的文档解释了语法，以防您对模板引擎不熟悉。
像这样（playground链接）：
package mainimport ("html/template""os")const tplStr = `<table><thead><tr><th>Teacher</th><th>Student</th><th>Blue Pens</th><th>Red Pens</th></tr></thead><tbody>{{range $teacher, $rows := . }}{{ $first := true }}{{ range $student, $colors := . }}<tr><td>{{ if $first }}{{ $first = false }}{{ $teacher }}{{ end }}</td><td>{{ $student }}</td><td>{{ $colors.Blue }}</td><td>{{ $colors.Red }}</td></tr>{{ end }}{{ end }}</tbody></table>`type color struct {Blue intRed int}func fetchData() map[string]map[string]color {return map[string]map[string]color{"joe": {"alex": {Blue: 3,Red: 6,},"may": {Blue: 2,Red: 6,},},"jena": {"fred": color{Blue: 1,Red: 2,},},}}func main() {tpl, err := template.New("table").Parse(tplStr)if err != nil {panic(err)}err = tpl.Execute(os.Stdout, fetchData())if err != nil {panic(err)}}
英文:
The easiest way in my opinion is to use the html/template package. The docs of text/template explain the syntax, in case you are not familiar with the templating engine.
Like so (playground link):
package mainimport ("html/template""os")const tplStr = `<table><thead><tr><th>Teacher</th><th>Student</th><th>Blue Pens</th><th>Red Pens</th></tr></thead><tbody>{{range $teacher, $rows := . }}{{ $first := true }}{{ range $student, $colors := . }}<tr><td>{{ if $first }}{{ $first = false }}{{ $teacher }}{{ end }}</td><td>{{ $student }}</td><td>{{ $colors.Blue }}</td><td>{{ $colors.Red }}</td></tr>{{ end }}{{ end }}</tbody></table>`type color struct {Blue intRed int}func fetchData() map[string]map[string]color {return map[string]map[string]color{"joe": {"alex": {Blue: 3,Red: 6,},"may": {Blue: 2,Red: 6,},},"jena": {"fred": color{Blue: 1,Red: 2,},},}}func main() {tpl, err := template.New("table").Parse(tplStr)if err != nil {panic(err)}err = tpl.Execute(os.Stdout, fetchData())if err != nil {panic(err)}}
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