How to implement the Update function in a MERN application?

Question

MongoDB

Good day.
I'm trying to figure out the MERN stack, using the example of an application found on github
Based on this repository, I already sketched my first application, with some additions and changes, and when I decided to add the Update function, I got stuck ... (get, add, delete implemented)

Answer 1

from react in the body of the request you send the _id of the item that you want to update
then in the express route, for example, via
https://mongoosejs.com/docs/api.html#model_Model.f...

Item.findOneAndUpdate(
  {_id: req.params.id },   // ищем айтем по id
  { $set: { name: req.params.name } }  // меняем поле name на полученное в теле запроса из реакта
).then( () => {
  // всё прошло удачно
  res.json({ success: true })
} ) 
 .catch( err => {
  // всё прошло крайне неудачно
  res.json({ success: false })
} )