I'm beginner and tried to transfer the model to another file, it didn't work for me, suggest me how to do it correctly. The question may seem silly, but if I knew the answer, I would not ask it.
file todo.controller.js
const fs = require("fs");
const { v4: uuidv4 } = require("uuid");
const data = fs.readFileSync("./data/data.json");
let todos = JSON.parse(data);
class todoController {
async createTodo(req, res) {
req.on("data", (data) => {
const jsondata = JSON.parse(data);
const title = jsondata.title;
const description = jsondata.description;
if ((title, description)) {
todos.push({
id: uuidv4(),
title,
description,
dateOfCreate: new Date(),
lastModified: new Date(),
check: new Boolean(false),
});
fs.writeFile(
"./data/data.json",
JSON.stringify(todos, null, 2),
(err) => {
if (err) throw error;
}
);
}
});
}}
file todo.router.js
const url = require("url");
const todoController = require("../controllers/todo.controller");
const todoRouter = (req, res) => {
const urlparse = url.parse(req.url, true);
if (urlparse.pathname == "/todos" && req.method == "POST") {
todoController.createTodo(req, res);
}
};
module.exports = todoRouter;
here is file data.json
data.json
You have two separate problems here, separating your code to a different file and also saving or persisting that data somewhere, in this case a file.
You have to create something like a data model and then you have to import it in your other code.
// data.js
export const get = async () => {} // we will implement this just now
export const set = async (data) => {} // we will implement this just now
...
// controller.js
import {get, set} from './data.js' // import the methods we just created
...
const createTodo = async (req, res) => {
req.on("data", (data) => {
// here you can use get() if you want to use the data
set(JSON.stringify(data)) // send data to your data model
}
}
Then we also have to actually do something with those methods.
// data.js
export const get = async () => {
// may need to use JSON.parse here depending on how you'll use it
return fs.readFile('./data.json')
}
export const set = async (data) => {
fs.writeFile('data.json', JSON.stringify(data))
}
So the idea is to have a model responsible for managing the data, retrieving it and saving it, then importing and using those methods in the main controller. The code above isn't perfect, it's just to show you how to think about it.