mongoose updateone example

Example 1: mongoose find and update prop

var query = {'username': req.user.username};
req.newData.username = req.user.username;

MyModel.findOneAndUpdate(query, req.newData, {upsert: true}, function(err, doc) {
    if (err) return res.send(500, {error: err});
    return res.send('Succesfully saved.');
});

Example 2: mongoose updatemany example

User.update({"created": false}, {"$set":{"created": true}}, {"multi": true}, (err, writeResult) => {});

Example 3: mongoose updateone example

// Update the document using `updateOne()`
await CharacterModel.updateOne({ name: 'Jon Snow' }, {
  title: 'King in the North'
});

// Load the document to see the updated value
const doc = await CharacterModel.findOne();
doc.title; // "King in the North"

Example 4: findone and update mongoose

// Using queries with promise chaining
Model.findOne({ name: 'Mr. Anderson' }).
  then(doc => Model.updateOne({ _id: doc._id }, { name: 'Neo' })).
  then(() => Model.findOne({ name: 'Neo' })).
  then(doc => console.log(doc.name)); // 'Neo'

// Using queries with async/await
const doc = await Model.findOne({ name: 'Neo' });
console.log(doc.name); // 'Neo'

Example 5: update query in mongoose

var conditions = { name: 'bourne' } 
  , update = { $inc: { visits: 1 }}

Model.update(conditions, update, { multi: true }).then(updatedRows=>{
  
}).catch(err=>{
  console.log(err)
  
})

Example 6: updateone mongodb examples

const query = { "name": "football" };
const update = {
  "$push": {
    "reviews": {
      "username": "tombradyfan",
      "comment": "I love football!!!"
    }
  }
};
const options = { "upsert": false };

itemsCollection.updateOne(query, update, options)
  .then(result => {
    const { matchedCount, modifiedCount } = result;
    if(matchedCount && modifiedCount) {
      console.log(`Successfully added a new review.`)
    }
  })
  .catch(err => console.error(`Failed to add review: ${err}`))