I was trying to set up a CRUD http API using gorilla-mux library.
I followed a youtube tutorial Implementation is below: -
package main
import (
"github.com/gorilla/mux"
"net/http"
"log"
)
type Book struct {
Id string `json:"id"`
Isbn string `json:"isbn"`
Title string `json:"title"`
Author *Author `json:"author"`
}
type Author struct {
Firstname string `json:"firstname"`
Lastname string `json:"lastname"`
}
// Get all books
func getBooks(w http.ResponseWriter, r *http.Response) {
}
// Get single book
func getBook(w http.ResponseWriter, r *http.Response) {
}
// Create a book
func createBook(w http.ResponseWriter, r *http.Response) {
}
// Update a book
func updateBook(w http.ResponseWriter, r *http.Response) {
}
// Delete a book
func deleteBook(w http.ResponseWriter, r *http.Response) {
}
func main() {
r := mux.NewRouter()
r.HandleFunc("/api/books", getBooks).Methods("GET")
r.HandleFunc("/api/book/{id}", getBook).Methods("GET")
r.HandleFunc("/api/book", createBook).Methods("POST")
r.HandleFunc("/api/book/{id}", updateBook).Methods("PUT")
r.HandleFunc("/api/book/{id}", deleteBook).Methods("DELETE")
r.Path("/api/books").Methods("GET").HandlerFunc(getBooks)
log.Fatal(http.ListenAndServe(":8000", r))
}
When I do go build on this file, I get below compilation errors -
./main.go:49:15: cannot use getBooks (type func(http.ResponseWriter, *http.Response)) as type func(http.ResponseWriter, *http.Request) in argument to r.HandleFunc ./main.go:50:15: cannot use getBook (type func(http.ResponseWriter, *http.Response)) as type func(http.ResponseWriter, *http.Request) in argument to r.HandleFunc ./main.go:51:15: cannot use createBook (type func(http.ResponseWriter, *http.Response)) as type func(http.ResponseWriter, *http.Request) in argument to r.HandleFunc ./main.go:52:15: cannot use updateBook (type func(http.ResponseWriter, *http.Response)) as type func(http.ResponseWriter, *http.Request) in argument to r.HandleFunc ./main.go:53:15: cannot use deleteBook (type func(http.ResponseWriter, *http.Response)) as type func(http.ResponseWriter, *http.Request) in argument to r.HandleFunc
What did I do wrong? What did I miss here? In the tutorial, he was able to build and run the file.
