Home / Questions / 317535
Accepted
V0LT3RR4
Asked: 2020-12-21 06:32:28 +0800 CST 2020-12-21 06:32:28 +0800 CST

Can I make a field with an array of objects [Object] in a mongoose Schema?

  • 772

I need my Schema to receive an array with this structure:

const arrayAnswers: [
    {description: 'String', isCorrect: true},
    {description: 'String', isCorrect: false},
    {description: 'String', isCorrect: false}
]

This is the schematic I write:

const mongoose = require('mongoose');
const {Schema} = mongoose;

const fields = {
  answers: [Object]
}

const question = new Schema(Object.assign(fields), {timestamps: true});

module.exports = {
  Model: mongoose.model('question', question),
  fields
};

Can the schema for that field be like this or is there something wrong with it [Object]?

I have read about Schema.Types.Mixedand about subdocuments, but I wouldn't know how to make the subdocument. And according to the Mixed makes it lose the ability to autodetect and save changes, so I don't know what repercussions it can have exactly with what I do.

javascript

1 Answers

  1. Best Answer

    Of course you can. If the structure of the object you are going to store in your field answersis fixed, then you can do something like the following:

    const mongoose = require('mongoose');

const questionSchema = new mongoose.Schema({
  const answers: [{
    description: {
      type: String,
      required: 'Description field is required'
    },
    isCorrect: {
      type: Boolean,
      required: 'isCorrect field is required'
    }
  }]
}, { timestamps: true });

module.exports = {
  Model: mongoose.model('Question', questionSchema)
}

    What we have done is define the field answersas a type arrayand inside we have established the structure of the type of document it will contain. I have used constraints requiredon the document fields, although you may not need them, that will depend on your logic.

    Doing it the way you intend (according to what you state in your question) would make the data type stored in the field the default answerstype .Mixed

    You can read more about the ArrayMongoose type in the documentation .

    I hope this helps you solve your doubt.

    • 1