MockApproach1.elm

getPost : Model -> (Result Http.Error String -> msg) -> Int -> Cmd msg
getPost model msg postId =
    let
        url =
            model.apiUrl
                ++ "/posts/"
                ++ String.fromInt postId
                ++ (if model.environment == "mock" || model.environment == "test" then
                        ".json"

                    else
                        ""
                   )
    in
    Http.get
        { url = url
        , expect = Http.expectJson msg decodePost
        }