Defining schemas and models in Express - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import Mongoose in an Express app.

Express

const mongoose = require('[1]');

Drag options to blanks, or click blank then click option'

Amongoose

Bexpress

Cbody-parser

Dcors

Attempts:

3 left

💡 Hint

Common Mistakes

Importing 'express' instead of 'mongoose'.

Using a package unrelated to schemas like 'cors'.

You need to import mongoose to define schemas and models.

2fill in blank

medium

Complete the code to create a new Mongoose schema.

Express

const userSchema = new mongoose.[1]({ name: String, age: Number });

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ASchema

BCollection

CDocument

DModel

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'Model' instead of 'Schema' to define structure.

Confusing 'Document' or 'Collection' with schema.

The Schema class defines the structure of documents in a collection.

3fill in blank

hard

Fix the error in the code to create a model from a schema.

Express

const User = mongoose.model('[1]', userSchema);

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AUserSchema

Busers

CuserSchema

DUser

Attempts:

3 left

💡 Hint

Common Mistakes

Using lowercase or plural names like 'users'.

Passing the schema variable name instead of model name.

The first argument to mongoose.model is the singular model name, capitalized.

4fill in blank

hard

Fill both blanks to define a schema with a required string field and create a model.

Express

const productSchema = new mongoose.[1]({ title: { type: String, [2]: true } });
const Product = mongoose.model('Product', productSchema);

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ASchema

Brequired

Cunique

Ddefault

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'unique' instead of 'required' for mandatory fields.

Confusing 'default' with 'required'.

Use Schema to define the schema and required: true to make the field mandatory.

5fill in blank

hard

Fill all three blanks to define a schema with a default number field, create a model, and export it.

Express

const orderSchema = new mongoose.[1]({ quantity: { type: Number, [2]: 1 } });
const Order = mongoose.model('[3]', orderSchema);
module.exports = Order;

Drag options to blanks, or click blank then click option'

ASchema

Bdefault

COrder

DModel

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'Model' instead of 'Schema' for the first blank.

Using 'required' instead of 'default' for the second blank.

Using lowercase or plural model names.

Define the schema with Schema, set a default value with default, and name the model 'Order'.