使用 axios 将数据推送到现有 object 中的数组

Question

i have a object which looks like this:

 {
      "title": "675756",
      "release_date": "2022-01-16",
      "series": "Better Call Saul",
      "img": "https://upload.wikimedia.org/wikipedia/en/0/03/Walter_White_S5B.png", 
      "characters": [],
      "id": 1
    }

to an characters array i want to add the id of characters. I do it by form and then i handle submit like this:

const handleSubmit = (values) => {
    console.log("dodano aktora do filmu!");
    console.log(values);
    addActorToMovie(values);

    history.goBack();
  };

the addActorToMovie action:

export const addActorToMovie = (resp) => ({
  type: types.ADD_CHAR_TO_MOVIE,
  payload: resp,
});

and the reducer:

 case types.ADD_CHAR_TO_MOVIE:
      console.log(action.payload);
      return {
        ...state,
        ...state.episodes.map(function (item) {
          return item.id === action.payload.episodeId
            ? {
                id: item.id,
                title: item.title,
                release_date: item.release_date,
                series: item.series,
                img: item.img,
                characters: [...item.characters, action.payload.actor],
              }
            : { ...item };
        }),
      };

It all works, but the problem is that i dont want to do it loccaly. Im using an database with json-server, and I want to do an Axios Request so that it would add a data to the database . And i don't know how to do this, when i use axios.post it adds an object to my episodes array, if im using axios.put it changes an object. Is there any possibility to push the data to an array as i do it with the code above, but with axios so that it would be added to database ?

My approach looked like this:

export const addActorToMovieAxios = (value) => {
  console.log(value);
  return async (dispatch) => {
    try {
      const response = await axios.post(
        `http://localhost:3000/episodes/`,
        value
      );
      console.log(response);
      dispatch(addActorToMovie(response.data));
    } catch (ex) {
      console.log(ex);
    }
  };
};

but as I said this does add a new object to an array.....

"episodes": [
    {
      "title": "675756",
      "release_date": "2022-01-16",
      "series": "Better Call Saul",
      "img": "https://upload.wikimedia.org/wikipedia/en/0/03/Walter_White_S5B.png",
      "characters": [],
      "id": 1
    },
    {
      "episodeId": 1,
      "actor": "1",
      "id": 2
    }
  ]

Answer 1

So just to be clear I understand your question, you have an object that already exists in your DB, and you want to push something onto the 'characters' array in that existing object, without creating a new object, correct?

To do this, I would use Mongo for your DB and define two Mongoose Schemas, one for the existing object (let's call it TVShow) and one for the Characters within that object. Your two Schemas will look like this:

TVShowModel.js:

 const mongoose = require('mongoose'); const CharacterModel = require('./CharacterModel') const TVShowScheme = new mongoose.Schema({ title: { type: String, }, release_date: { type: Date, }, series: { type: String, }, img: { type: String, }, characters:[ { type: mongoose.Schema.Types.ObjectId, ref: 'Student' }, ], examQuestions: [ { type: mongoose.Schema.Types.ObjectId, ref: 'CharacterModel' } ] }) module.exports = mongoose.model('TVShowModel', TVShowScheme )

CharacterModel.js:

 const mongoose = require('mongoose'); const CharacterModel= new mongoose.Schema({ characterName: { type: String, }, actorName: { type: String, }, }) // add any other fields you want here module.exports = mongoose.model('CharacterModel', CharactModelScheme )

Then, create your Axios post request. Make sure you send when you send the 'value' variable to your server, it contains the id (or perhaps the unique title) of the object you'll be 'pushing' to. Push won't work in axios/react, so we'll use the 'spread' opperator instead.

Your router will look like this:

 const CharacterModel= require ('../models/CharacterModel'); const TVShowModel= require ('../models/TVShowModel'); const router = express.Router(); router.post('/episodes', async function(req,res){ try{ const tvshow = await TVShowModel.find({title: req.body.title}) // edit as needed console.log("FOUND TV Show: "+tvshow ) const characterName= req.body.characterName const actorName = req.body.actorName const newCharacter = new CharacterModel({ characterName, actorName, }) console.log("new character created: "+newCharacter) tvshow[0].CharacterModel = [...tvshow[0].CharacterModel,newCharacter]; await tvshow[0].save().then(()=>res.json('New Character Added to DB')).catch(err=>res.status(400).json('Error: ' + err)) } catch(e){ console.log(e) } })

Hope this was clear!