41 lines
1.3 KiB
Go
41 lines
1.3 KiB
Go
package main
|
|
|
|
import (
|
|
"fmt"
|
|
"github.com/julienschmidt/httprouter"
|
|
"net/http"
|
|
"strconv"
|
|
)
|
|
|
|
// "POST /v1/movies" endpoint.
|
|
func (app *application) createMovieHandler(w http.ResponseWriter, r *http.Request) {
|
|
fmt.Fprintln(w, "create a new movie")
|
|
}
|
|
|
|
// "GET /v1/movies/:id"
|
|
func (app *application) showMovieHandler(w http.ResponseWriter, r *http.Request) {
|
|
/*
|
|
When httprouter is parsing a request, any interpolated URL parameters will be
|
|
stored in the request context. We can use the ParamsFromContext() function to
|
|
retrieve a slice containing these parameter names and values.
|
|
*/
|
|
params := httprouter.ParamsFromContext(r.Context())
|
|
|
|
/*
|
|
We can then use the ByName() method to get the value of the "id" parameter from
|
|
the slice. In our project all movies will have a unique positive integer ID, but
|
|
the value returned by ByName() is always a string. So we try to convert it to a
|
|
base 10 integer (with a bit size of 64). If the parameter couldn't be converted,
|
|
or is less than 1, we know the ID is invalid so we use the http.NotFound()
|
|
func to return a 404 Not Found Response.
|
|
*/
|
|
id, err := strconv.ParseInt(params.ByName("id"), 10, 64)
|
|
if err != nil || id < 1 {
|
|
http.NotFound(w, r)
|
|
return
|
|
}
|
|
|
|
// Otherwise, interpolate the movie ID in a placeholder response.
|
|
fmt.Fprintf(w, "show the details of movie %d\n", id)
|
|
}
|