Trying to save nested document in MongoDB using mongoose on Nodejs

Question

I was trying to save address as nested document in below format

On client side I was sending the data in below format:

const address = JSON.stringify( { addressline1:form.addressline1.value, addressline2:form.addressline2.value, city: form.city.value, state: form.state.value, pincode:form.pincode.value } );

const res = await fetch('/candidate/contact-details',{
                method: 'POST',
                body: JSON.stringify( { address } ), 
                headers: {
                    'CSRF-Token': csrfToken,
                    'Content-Type': 'application/json'
                }
            });

on Server side :

module.exports.contactdetail_post = async (req,res) => {

    const token = req.cookies.jwtauthtoken;
    const { address} = req.body;

    try{
        const contactdetail = await ContactDetail.create({ address});
        await PersonalDetail.findOneAndUpdate(
            { candidate: await getUserId(token)}, // find a document with that filter
            {address}, // document to insert when nothing was found
            {upsert: true, new: true, runValidators: true}, // options
            function (err, doc) { // callback
                if (err) {

    console.log({address});
                    const errors = handleErrors(err);
                } else {
                    res.status(200).json({success: 'saved'});
                }
            }
        );
        res.status(200).json({ success: 'Success' });
    }
    catch(err){
        console.log(err);
        const errors = handleErrors(err);
        res.status(406).json({errors});
    }




}

MySchema looks like this: This is the schema of the contact detail.

const contactdetailSchema = new mongoose.Schema({
    address: {
        addressline1: {
            type: String,
            required: [true, 'Please enter your address'],
            minlength:200
        },
        addressline2: {
            type: String,
            minlength:200
        },
        city: {
            type: String,
            required: [true, 'Please selet your city']
        },
        state: {
            type: String,
            required: [true, 'Please select your state']
        },
        pincode: {
            type: Number,
            required: [true, 'Please enter your Pincode'],
            minlength:6
        }
    },
    candidate: {
        type: mongoose.Schema.Types.ObjectId,
        ref: 'User'
    }
});

my console output:

at processTicksAndRejections (internal/process/task_queues.js:79:11) { properties: [Object], kind: 'required', path: 'address.addressline1', value: undefined, reason: undefined, [Symbol(mongoose:validatorError)]: true } }, _message: 'Validation failed' }

this error shows for all the parameters ( addressline2, city, state,pincode)

I don't see you parsing the JSON anywhere here in the code. You stringify it on the client, but if you do that, then you need to JSON.parse() it on the server. Ideally, you shouldn't be stringifying it at all. The error you're receiving is valid, as the server just sees one big string rather than the JSON data that it is expecting. — Chris
– Chris, Commented Sep 18, 2020 at 14:59
I used JSON.parse on address and stringifyed it on body but it shows following error. Uncaught (in promise) SyntaxError: Unexpected token o in JSON at position 1. Can you specify exactly where to modify the code to get correct output. — Aravindan vaithialingam
– Aravindan vaithialingam, Commented Sep 19, 2020 at 4:59
Hey Thanks for your help. It works after I changing the code { address: JSON.parse(address) } inside the findOneAndUpdate(). — Aravindan vaithialingam
– Aravindan vaithialingam, Commented Sep 19, 2020 at 5:21

Aravindan vaithialingam · Accepted Answer · 2020-09-19 05:24:25Z

1

 await PersonalDetail.findOneAndUpdate(
            { candidate: await getUserId(token)}, // find a document with that filter
            {address: JSON.parse(address) }, // This line is changed 
            {upsert: true, new: true, runValidators: true}, // options
            function (err, doc) { // callback
                if (err) {

    console.log({address});
                    const errors = handleErrors(err);
                } else {
                    res.status(200).json({success: 'saved'});
                }
            }
        );

Changing my code like this works fine. Other code remains the same

answered Sep 19, 2020 at 5:24

Aravindan vaithialingam

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