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This is a question. What is a good way to get a Go struct from backend Go code to a Go func in frontend (compiled to JavaScript using GopherJS)... If I'm using html/template package.
Here are details. Suppose I have a Go struct:
package common
type Foo struct {
Bar string
Baz bool `json:",omitempty"`
}And I use html/template to render a template like this:
<div>
{{range .ManyFoos}}<div>
<!-- I'd like to pass the Foo struct into the GoHandler func below. -->
<span onclick="GoHandler({{.}});">{{.Bar}}</span>
{{end}}
</div>And the GoHandler is written in Go and compiled to JavaScript via GopherJS.
// +build js
package main
import (
"github.com/gopherjs/gopherjs/js"
"honnef.co/go/js/xhr"
".../common" // Where the Foo struct was defined.
)
// What I'd _like_ to be able to do. (Or something similarly Go-like and short...)
func GoHandler(foo common.Foo) {
foo.Bar = foo.Bar + ... // Some logic.
fooJson, err := json.Marshal(foo)
if err != nil { panic(err) }
_, err := xhr.Send("POST", "/foo", string(fooJson))
if err != nil { panic(err) }
}
// What I'm currently doing... (It works but involves JavaScript, which I want to find a way to avoid.)
func GoHandler(foo js.Object) {
foo.Set("Bar", foo.Get("Bar") + ...) // Some logic.
// If I have to do this, I might as well not be writing Go code...
fooJson = js.Global.Get("JSON").Call("stringify", foo))
_, err := xhr.Send("POST", "/foo", string(fooJson))
if err != nil { panic(err) }
}
func main() {
js.Global.Set("GoHandler", GoHandler)
}Any ideas or suggestions are appreciated. I'm new to dealing with JSON with GopherJS, so perhaps I'm missing some easy way to improve this. Or perhaps html/template cannot be used directly, and a similar package with some sort of GopherJS support would need to be created? Thanks!
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