Creating an envelope struct type inside our helpers file to update our writeJSON data type method's parameter. Updating healthcheckHandler and showMovieHandler with this new type to update our responses.

cmd/api/movies.go

@@ -36,7 +36,7 @@ func (app *application) showMovieHandler(w http.ResponseWriter, r *http.Request)
 	}
 
 	// Encode the struct to JSON and send it as the HTTP response.
-	err = app.writeJSON(w, http.StatusOK, movie, nil)
+	err = app.writeJSON(w, http.StatusOK, envelope{"movie": movie}, nil)
 	if err != nil {
 		app.logger.Error(err.Error())
 		http.Error(w, "The server encountered a problem and could not process your request", http.StatusInternalServerError)