英文:
Dynamically process template map values
问题
我有一个像这样的注释对象：
注释：map[string]string{"common": "一些 GPM 一致性检查器失败。","t_0": "标题1","t_1": "标题2","v_0": "V1","v_1": "V2",}
我想以表格形式打印出来，如下所示：
| 标题1 | 标题2 |
|---|---|
| V1 | V2 |
我已经开始了一些工作，像这样：
{{ range .Annotations.SortedPairs }}{{ if match "^t_" .Name }}<p>{{ .Value }}</p>{{ end }}{{ end }}
但我无法真正弄清楚应该如何完成。我希望能够动态地完成，因为列的数量可能不同。
英文:
I have annotations object like this:
Annotations: map[string]string{"common": "Some GPM consistency checkers have failed.","t_0": "Title1","t_1": "Title2","v_0": "V1","v_1": "V2",
I want to print it in table like:
| Title1 | Title2 |
|---|---|
| V1 | V2 |
I started something like:
{{ range .Annotations.SortedPairs }}{{ if match "^t_" .Name }}<p>{{ .Value }}</p>{{ end }}{{ end }}
but can't really figure out how it should be done. I want to do it dynamically because there can be different number of columns
答案1
得分: 1
我认为你应该在你的Go模板中添加一个辅助函数。
var testTemplate *template.Templatefunc main() {var err errortestTemplate, err = template.ParseFiles("hello.gohtml")if err != nil {panic(err)}http.HandleFunc("/", handler)http.ListenAndServe(":3000", nil)}
func handler(w http.ResponseWriter, r *http.Request) {data := struct {FindValue func(ann map[string]string, needle string) stringAnnotations map[string]string}{FindValue,map[string]string{"common": "Some GPM consistency checkers have failed.","t_0": "Title1","t_1": "Title2","v_0": "V1","v_1": "V2",},}err := testTemplate.Execute(w, data)if err != nil {http.Error(w, err.Error(), http.StatusInternalServerError)}}
func FindValue(ann map[string]string, needle string) string {var code = strings.Replace(needle, "t_", "", 1)for key, val := range ann {if key == "v_"+code {return val}}return ""}
然后你可以在你的模板中像这样使用这个函数：
{{ range $key, $value := .Annotations.SortedPairs }}{{ if match "^t_" $key }}<p>{{FindValue $key}}</p>{{ end }}{{ end }}
希望这对你有所帮助。如果有任何问题，请告诉我，因为我没有测试过这段代码。
英文:
I think you should add a helper function to your Go template.
var testTemplate *template.Templatefunc main() {var err errortestTemplate, err = template.ParseFiles("hello.gohtml")if err != nil {panic(err)}http.HandleFunc("/", handler)http.ListenAndServe(":3000", nil)}
func handler(w http.ResponseWriter, r *http.Request) {data := struct {FindValue func(ann map[string]string, needle string) stringAnnotations map[string]string}{FindValue,map[string]string{"common": "Some GPM consistency checkers have failed.","t_0": "Title1","t_1": "Title2","v_0": "V1","v_1": "V2",},}err := testTemplate.Execute(w, data)if err != nil {http.Error(w, err.Error(), http.StatusInternalServerError)}}
func FindValue(ann map[string]string, needle string) string {var code = strings.Replace(needle, "t_", "", 1)for key, val := range ann {if key == "v_"+code {return val}}return ""}
then you can use this function in your template like this:
{{ range $key, $value := .Annotations.SortedPairs }}{{ if match "^t_" .$key }}<p>{{FindValue ".$key"}}</p>{{ end }}{{ end }}
I hope this helps to you. if there is any problem tell me because I didn't test this code.
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