Storing intricate information in MongoDB

Question

Storing intricate information in MongoDB

I've been exploring the JSON-BSON structures of MongoDB, but I'm struggling to understand how to insert documents into other documents and query them.

Here's what I'm curious about - let's say someone wants to store an array of documents within another array, like in a school:

  const university = mongoose.Schema(
  {
     name : {type : String, require : true, unique : true},
     school : [{
        schoolName : String
    }]
  });

Could someone explain how to insert documents within an array of documents based on the name? I'm new to MongoDB and would appreciate any guidance.

javascript mongodb mean-stack

Answer 1

Answer №1

To add data:

const School = mongoose.model('school')
const school = new School({
  name: 'Yale',
  programs: [
    {name: 'Art'},
    {name: 'Science'}
  ]
})
school.save(function (err, school) {
  console.log(school)
})

To search within an array:

const School = mongoose.model('school')

// To find an item in the array
School.find({ 'programs.name': 'Art' }, function (err, schools) {
  console.log(schools)
})

// To find an item at a specific index
School.find({ 'programs.0.name': 'Art' }, function (err, schools) {
  console.log(schools)
})

To add an element to the array:

You can achieve this by using the $push operator which appends a value to an array.

const School = mongoose.model('school')
School.update(
  { name, 'Yale' },
  {
    $push: {
      programs: {name: 'Music'}
    }
  },
  function (err, schools) {}
)

Feel free to visit for various courses that are both informative and free of charge.

Additionally, exploring the documentation for mongodb and mongoose can greatly enhance your understanding.

Answer 2

To add data:

const School = mongoose.model('school')
const school = new School({
  name: 'Yale',
  programs: [
    {name: 'Art'},
    {name: 'Science'}
  ]
})
school.save(function (err, school) {
  console.log(school)
})

To search within an array:

const School = mongoose.model('school')

// To find an item in the array
School.find({ 'programs.name': 'Art' }, function (err, schools) {
  console.log(schools)
})

// To find an item at a specific index
School.find({ 'programs.0.name': 'Art' }, function (err, schools) {
  console.log(schools)
})

To add an element to the array:

You can achieve this by using the $push operator which appends a value to an array.

const School = mongoose.model('school')
School.update(
  { name, 'Yale' },
  {
    $push: {
      programs: {name: 'Music'}
    }
  },
  function (err, schools) {}
)

Feel free to visit for various courses that are both informative and free of charge.

Additionally, exploring the documentation for mongodb and mongoose can greatly enhance your understanding.

Storing intricate information in MongoDB

Answer №1

Similar questions

Transfer information from a Vue function to an external JSON document

Warning: Mongoose Server Selection Error - Unhandled Rejection Promise Detected

Encountered an issue retrieving audio during recording with Recorder.js

Creating a Python web scraper that utilizes Selenium and PhantomJS to extract DOM information

What causes an error when trying to access with the member access operator?

Linking input to radio buttons in Vue.js

Obtaining serverTime from a webpageWould you like to learn

"Although the query functions properly on its own, MongoDB is unexpectedly returning a null value

What are the steps to recursively transform a JavaScript object?

AngularJS ng-repeat items do not properly align when utilizing Bootstrap col-md-2 styles

Is an Ajax powered loading feature used in transitions between pages?

Parent window encountering issue while calling child window function

What methods can I use to adjust link distance while using the 3d-force-graph tool?

javascript change string into an array of objects

Transmit JSON data from the client to the MarkLogic Server device

What are the ideal situations for utilizing embedded documents within MongoDB?

The Problem of Restoring Column Height in Tabulator 4.6.3 Filters

Tips on how to use console.log in react-simple-chatbot

The API response in JSON format is displaying as "undefined"

Using the timer function to extract data within a specific time frame - a step-by-step guide