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Json Data To HTML Template Map in GoLang

I look at my API response and add it to the html template like this,

 // Following sends same information as above to the browser as html
     t, err := template.New("TopMovies").Parse(`
      {{define "TopMovies"}}
        <html>
        <ul>
        {{$ImgUrl := "http://image.tmdb.org/t/p/w185" }}
        {{range $movies := .Results}}
        <li>{{$ImgUrl}}{{$movies.PosterPath}}</li>
        <li>{{$movies.Adult}}</li>
        <li>{{$movies.Overview}}</li>
        <li>{{$movies.ReleaseDate}}</li>
        <li>{{$movies.GenreIds}}</li>
        <li>{{$movies.Id}}</li>
        <li>{{$movies.OriginalTitle}}</li>
        <li>{{$movies.OriginalLanguage}}</li>
        <li>{{$movies.Title}}</li>
        <li>{{$ImgUrl}}{{$movies.BackdropPath}}</li>
        <li>{{$movies.Popularity}}</li>
        <li>{{$movies.VoteCount}}</li>
        <li>{{$movies.Video}}</li>
        <li>{{$movies.VoteAverage}}</li>
        {{end}}
        </ul>
        </html>
      {{end}}
      `)
    err = t.ExecuteTemplate(w, "T", p) // This writes the client response
}

I have the impression that I could call it in my html templates, for example,

{{.TopMovies}}

But when I run the application, the data does not appear on the html page to which I call it. What am I missing here?

I create such a structure

//A Page structure
type Page struct {
  Title string
  TopMovies string
}

Then I create my descriptor as follows:

func TopMoviesHandler(w http.ResponseWriter, r *http.Request) {
   res, err := http.Get(url)
      if err != nil {
        panic(err)
      }
      defer res.Body.Close()

      body, err := ioutil.ReadAll(res.Body)
      if err != nil {
        panic(err)
      }
      var p Payload

      err = json.Unmarshal(body, &p)
      if err != nil {
        panic(err)
      }

  // Following sends same information as above to the browser as html
     t, err := template.New("TopMovies").Parse(`
      {{define "TopMovies"}}
        <html>
        <ul>
        {{$ImgUrl := "http://image.tmdb.org/t/p/w185" }}
        {{range $movies := .Results}}
        <li>{{$ImgUrl}}{{$movies.PosterPath}}</li>
        <li>{{$movies.Adult}}</li>
        <li>{{$movies.Overview}}</li>
        <li>{{$movies.ReleaseDate}}</li>
        <li>{{$movies.GenreIds}}</li>
        <li>{{$movies.Id}}</li>
        <li>{{$movies.OriginalTitle}}</li>
        <li>{{$movies.OriginalLanguage}}</li>
        <li>{{$movies.Title}}</li>
        <li>{{$ImgUrl}}{{$movies.BackdropPath}}</li>
        <li>{{$movies.Popularity}}</li>
        <li>{{$movies.VoteCount}}</li>
        <li>{{$movies.Video}}</li>
        <li>{{$movies.VoteAverage}}</li>
        {{end}}
        </ul>
        </html>
      {{end}}
      `)
    err = t.ExecuteTemplate(w, "T", p) // This writes the client response
}

Then in main.go

   http.HandleFunc("/TopPicks", TopMoviesHandler)

TopPicks.html

{{define "TopPicks"}}
    {{template "header" .}}
    <div class="content">
    {{.TopMovies}}
    </div>
     {{template "footer" .}}
    {{end}}

What kind of work is this

func aboutHandler(w http.ResponseWriter, r *http.Request) {
  display(w, "about", &Page{Title: "About"})
}

I can add a title to the page in the same way as I mentioned earlier, but using display()

And in the html template

<title>{{.Title}}</title>

How can I do this work for my json answer?

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2 answers

, {{define "body"}}, ExecuteTemplate "T", .

, : t.ExecuteTemplate(w, "body", p)

, , , , .

( Play).

, , , http.Request.

package main

import "html/template"
import "os"
import "log"

var mainText = `
Normal page stuff
{{ template "_header_" . }}
{{ template "body" . }}
`

var bodyText = `
 Body has: {{ .Thing }}
`
var headerText = `
 I am header text
`

type Stuff struct {
    Thing string
}

func main() {
    t := template.New("everything")

    // parse all templates you may want
    template.Must(t.New("/").Parse(mainText))
    template.Must(t.New("_header_").Parse(headerText))
    template.Must(t.New("body").Parse(bodyText))

    if err := t.ExecuteTemplate(os.Stdout, "/", Stuff{"I am a thing"}); err != nil {
        log.Fatal("Failed to execute:", err)
    }
}
+1

, , .

func TopMoviesHandler (w http.ResponseWriter, r * http.Request) {  ... ...

err = t.ExecuteTemplate(w, "T", p) // This writes the client response

Should be 

err = t.ExecuteTemplate(w, "TopMovies", p) // This writes the client response

html

{{define "TopPicks"}}
     {{template "header" .}}
     <div class="content">
          {{.TopMovies}}
          {{template "MyTemplate" . }}
     </div>
     {{template "footer" .}}
{{end}}


{{define "TopPicks"}}
     {{template "header" .}}
     <div class="content">
          {{.TopMovies}}
          {{template "MyTemplate" .TopMovies }}
     </div>
     {{template "footer" .}}
{{end}}

, , json, .

, , , . topMovies, api. , , .

package main

import (
    "net/http"
    "text/template"
)

type movie struct {
    Title string
}

type page struct {
    Title     string
    TopMovies []movie
}

func main() {
    http.HandleFunc("/", func(w http.ResponseWriter, req *http.Request) {
        w.Header().Add("Content Type", "text/html")

        templates := template.New("template")
        templates.New("Body").Parse(doc)
        templates.New("List").Parse(docList)

        topMovies := []movie{{Title: "Movie 1"}, {Title: "Movie 2"}, {Title: "Movie 3"}}

        page := page{Title: "My Title", TopMovies: topMovies}
        templates.Lookup("Body").Execute(w, page)

    })

    http.ListenAndServe(":8000", nil)
}

const docList = `
<ul >
    {{range .}}
    <li>{{.Title}}</li>
    {{end}}
</ul>
`

const doc = `
<!DOCTYPE html>
<html>
    <head><title>{{.Title}}</title></head>
    <body>
        <h1>Hello Templates</h1>
        {{template "List" .TopMovies}}
    </body>
</html>
`
+1

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