JSON rendering in Ruby on Rails - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to render a JSON response with a message.

Ruby on Rails

render json: { message: [1] }

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

A"Hello, world!"

BHello, world!

C'Hello, world!'

Dmessage

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting quotes around the string

Using single quotes instead of double quotes

The message value must be a string in quotes to render valid JSON.

2fill in blank

medium

Complete the code to render a JSON object with a user's name.

Ruby on Rails

render json: { user: { name: [1] } }

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

Auser.name

B"user.name"

C:user.name

Duser[:name]

Attempts:

3 left

💡 Hint

Common Mistakes

Putting quotes around user.name making it a string literal

Using symbol notation instead of variable

Use the variable user.name to get the name value for JSON rendering.

3fill in blank

hard

Fix the error in rendering JSON with an array of items.

Ruby on Rails

render json: { items: [1] }

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

Aitems.json

Bitems

C[items]

Ditems.to_json

Attempts:

3 left

💡 Hint

Common Mistakes

Calling to_json inside render json causing double encoding

Wrapping the array in brackets again

Rails automatically converts arrays to JSON, so just pass the array variable.

4fill in blank

hard

Fill both blanks to render JSON with a user's id and email.

Ruby on Rails

render json: { id: [1], email: [2] }

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

Auser.id

Buser.email

C"user.email"

D"user.id"

Attempts:

3 left

💡 Hint

Common Mistakes

Putting quotes around variables turning them into strings

Using string literals instead of variables

Use user.id and user.email variables without quotes to render correct JSON values.

5fill in blank

hard

Fill all three blanks to render JSON with a product's name, price, and availability.

Ruby on Rails

render json: { name: [1], price: [2], available: [3] }

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

Aproduct.name

Bproduct.price

Cproduct.available

D"product.name"

Attempts:

3 left

💡 Hint

Common Mistakes

Using quotes around variables

Using string literals instead of variables

Use product's attributes directly without quotes to render JSON correctly.