Unsupported JSON Type

[Ken MacKenzie]

OK keep in mind I am learning so I am sure dump mistakes abound.  But I am having a problem with this code.

package main


import (
 "encoding/json"
 "net/http"
 "strconv"
 "log"
)


func GetJSONPosts (w http.ResponseWriter, r *http.Request) {
 somePosts := CreateSamplePosts
 enc := json.NewEncoder(w)
 w.Header().Set("Content-Type", "application/json; charset=UTF-8")
    w.WriteHeader(http.StatusOK)
 err := enc.Encode(somePosts)
 if err != nil {
 log.Println(err)
 }
/* for _, somePost := range somePosts() {
 err := enc.Encode(somePost)
 if err != nil {
 log.Println(err)
 }
 }*/
}


func CreateSamplePosts () JSONPosts {
 posts := JSONPosts{}
 for i := 0; i < 5; i++ {
 title := "Post " + strconv.Itoa(i+1)
 content := "This is content for post " + strconv.Itoa(i+1)
 post := JSONPost{Title: title, Content: content}
 posts = append(posts, post)
 }
 return posts
}

package main


import (
 "html/template"
)


type Page struct {
    Title string //`json:"title"`
    Content template.HTML //`json:"content"`
    PagePosts []Post
}


type Pages []Page


type Post struct {
    Title string //`json:"title"`
    Content template.HTML //`json:"content"`
}


type Posts []Post


type JSONPost struct {
    Title string `json:"Title"`
    Content string `json:"Content"`
}


type JSONPosts []JSONPost

When I run this in the browser nothing shows.  The error printed at the console is:
2015/08/12 21:46:06 json: unsupported type: func() main.JSONPosts

Now note in the first section of code the commented part works.  Well sort of.  No errors and something is output but since it is doing each struct item piecemeal the json is missing the commas between items.  Been googling around and not been able to figure out what I am doing wrong.

Obviously there is more to this code in other pieces but the rest of it is more the routes and main program/server.

Ken

[Kiki Sugiaman]

A shot in the dark since you did not post a working code: did you try to
call the function from another package (outside main)?

[Dustin]

someposts := CreateSamplePosts() 

You're missing the brackets and passing the function, not the result of calling the function.

[Ken MacKenzie]

That solved it.  Excellent, thank you.

And that also teaches me how about assigning a function itself to a variable.

Ken