ch8.1

cmd/api/movies.go

@@ -94,10 +94,10 @@ func (app *application) updateMovieHandler(w http.ResponseWriter, r *http.Reques
 	}
 
 	var input struct {
-		Title   string       `json:"title"`
-		Year    int32        `json:"year"`
-		Runtime data.Runtime `json:"runtime"`
-		Genres  []string     `json:"genres"`
+		Title   *string       `json:"title"`
+		Year    *int32        `json:"year"`
+		Runtime *data.Runtime `json:"runtime"`
+		Genres  []string      `json:"genres"`
 	}
 
 	err = app.readJSON(w, r, &input)
@@ -106,10 +106,18 @@ func (app *application) updateMovieHandler(w http.ResponseWriter, r *http.Reques
 		return
 	}
 
-	movie.Title = input.Title
-	movie.Year = input.Year
-	movie.Runtime = input.Runtime
-	movie.Genres = input.Genres
+	if input.Title != nil {
+		movie.Title = *input.Title
+	}
+	if input.Year != nil {
+		movie.Year = *input.Year
+	}
+	if input.Runtime != nil {
+		movie.Runtime = *input.Runtime
+	}
+	if input.Genres != nil {
+		movie.Genres = input.Genres
+	}
 
 	v := validator.New()
 	if data.ValidateMovie(v, movie); !v.Valid() {

cmd/api/routes.go

@@ -15,7 +15,7 @@ func (app *application) routes() *httprouter.Router {
 	router.HandlerFunc(http.MethodGet, "/v1/healthcheck", app.healthcheckHandler)
 	router.HandlerFunc(http.MethodPost, "/v1/movies", app.createMovieHandler)
 	router.HandlerFunc(http.MethodGet, "/v1/movies/:id", app.showMovieHandler)
-	router.HandlerFunc(http.MethodPut, "/v1/movies/:id", app.updateMovieHandler)
+	router.HandlerFunc(http.MethodPatch, "/v1/movies/:id", app.updateMovieHandler)
 	router.HandlerFunc(http.MethodDelete, "/v1/movies/:id", app.deleteMovieHandler)
 	return router
 }