Unable to save a array correctly in mongoodb using node/mongose-CodePudding

What is the proper way to save an array of data in mongodb using node/mongoose? I am able to all my data as an array, but everything is saved as the first value in the array (see img)

this is my current code:

  const channel = new Channel({
    // other fields
    fields:req.body.fields,
    creator: req.userData.userId //fix: creator not being passed
  });
  channel
    .save()
    .then(createdChannel => {
      res.status(201).json({
        message: "Channel added successfully",
        channel: {
          ...createdChannel,
          id: createdChannel._id
        }
      });
    })
    .catch(error => {
      console.log('error',error)
      res.status(500).json({
        message: "Creating a channel failed!"
      });
    });

here is my data model:

const mongoose = require("mongoose");

const channelSchema = mongoose.Schema({
  // other fields
  fields: { type: [String], required: true },

  creator: { type: mongoose.Schema.Types.ObjectId, ref: "User", required: true }
});

module.exports = mongoose.model("Channel", channelSchema);

I didn't see a similar issue online. Any idea on how I am suppose to save an array properly?

CodePudding user response：

This is because you are setting fields value as an array of strings, regarding to this question you should define your schema as:

fields : [{foo: String, bar: string}]

or if you don't know what attributes you will have in the object:

fields: {"type": Array, "default": []}

Hope this can help you

CodePudding user response：

Looks like your req.body.fields is stringified. So, you should parse it back to JSON:

const channel = new Channel({
  fields: JSON.parse(req.body.fields),
  creator: req.userData.userId,
});