#How to handle POST request with a JSON body

25 messages · Page 1 of 1 (latest)

lone cipher
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I also have a GET route:

http.HandleFunc("GET /", getAllBooks)

func getAllBooks(w http.ResponseWriter, req *http.Request) {
    fmt.Println("GET Request - getAllBooks")

    w.Header().Set("Content-Type", "application/json")
    w.WriteHeader(http.StatusOK)
    for i, book := range books {
        json.NewEncoder(w).Encode([]byte(i + ": " + book.title))
    }
}

But when I call it I get this:

sacred grove
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The issue is with the book struct
the field names should start with uppercase and the json tag should be like json:"title"

lone cipher
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ahh okay I will give it a try

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I just noticed I put the cursed books[book.title].title in the code I shared

sacred grove
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A bit cursed but not the issue

lone cipher
#

Amazing!

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Okay now I can POST but the get response is still garbled

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but I prob need to marshall it right

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ah no mhm idk whats up there, but ill try to figure it out

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thank you Sha2048

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you are my favourite encryption algorithm

sacred grove
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json.NewEncoder(w).Encode([]byte(i + ": " + book.title))
What you're doing is turning this i ": " + book.title bytes, then encoding that as json
Instead you should get the books as slice of books []Book and pass that to the Encoder (once, not multiple times in a loop)

lone cipher
#

yep doing that now

sacred grove
lone cipher
#

oh wow okay!

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I thought that uppercase export was mainly for like

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other files I would use

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so if I had another file called Book.go

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and declare my struct there

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okay thats interesting

sacred grove
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the json package lives in another file

lone cipher
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func getAllBooks(w http.ResponseWriter, req *http.Request) {
    fmt.Println("GET Request - getAllBooks")

    booksJson, err := json.Marshal(books)

    if err != nil {
        log.Fatal(err)
    }

    w.Header().Set("Content-Type", "application/json")
    w.WriteHeader(http.StatusOK)
    w.Write(booksJson)
}
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this looking good?

sacred grove
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Sure 👍