CRUD operations through models in Ruby on Rails - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a new user record with name 'Alice'.

Ruby on Rails

user = User.[1](name: 'Alice')

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

Acreate

Bfind

Cupdate

Ddestroy

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'find' instead of 'create' to make a new record.

Using 'update' which changes existing records, not create new ones.

The create method creates and saves a new record in the database.

2fill in blank

medium

Complete the code to find a user by id 5.

Ruby on Rails

user = User.[1](5)

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

Adelete

Bnew

Ccreate

Dfind

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'new' which only initializes but does not fetch from database.

Using 'create' which makes a new record instead of finding.

The find method retrieves a record by its id.

3fill in blank

hard

Fix the error in updating a user's email to '[e-mail]'.

Ruby on Rails

user = User.find(3)
user.[1](email: '[e-mail]')

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

Aupdate

Bcreate

Cdestroy

Dfind

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'create' which makes a new record instead of updating.

Using 'destroy' which deletes the record.

The update method changes attributes and saves the record.

4fill in blank

hard

Fill both blanks to delete a user with id 7.

Ruby on Rails

user = User.[1](7)
user.[2]

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

Afind

Bcreate

Cdestroy

Dupdate

Attempts:

3 left

💡 Hint

Common Mistakes

Trying to delete without finding the user first.

Using 'delete' instead of 'destroy' which is the Rails method.

First find the user, then call destroy to delete it.

5fill in blank

hard

Fill all three blanks to create a user, update their name, and then delete them.

Ruby on Rails

user = User.[1](name: 'Bob')
user.[2](name: 'Robert')
user.[3]

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

Acreate

Bupdate

Cdestroy

Dfind

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up the order of operations.

Using 'find' instead of 'create' to make a new user.

Create a new user, update the name, then delete the user record.