Strong parameters in Ruby on Rails - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to permit the :name attribute in strong parameters.

Ruby on Rails

params.require(:user).permit([1])

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

A:name

B:email

C:password

D:age

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting to use a symbol (missing colon).

Permitting the wrong attribute.

The permit method specifies which attributes are allowed. Here, :name is permitted.

2fill in blank

medium

Complete the code to require the :article parameter in strong parameters.

Ruby on Rails

params.[1](:article).permit(:title, :content)

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

Afetch

Ballow

Cpermit

Drequire

Attempts:

3 left

💡 Hint

Common Mistakes

Using permit instead of require.

Using a non-existent method like allow.

The require method ensures the parameter :article is present before permitting attributes.

3fill in blank

hard

Fix the error in the strong parameters method to permit :title and :body.

Ruby on Rails

def article_params
  params.require(:article).[1](:title, :body)
end

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

Arequire

Bpermit

Callow

Dfetch

Attempts:

3 left

💡 Hint

Common Mistakes

Using require twice.

Using a non-existent method like allow.

The permit method is used to allow specific attributes after requiring the parameter.

4fill in blank

hard

Fill both blanks to permit :email and :password inside the user_params method.

Ruby on Rails

def user_params
  params.[1](:user).[2](:email, :password)
end

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

Arequire

Bpermit

Cfetch

Dallow

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping the order of require and permit.

Using incorrect method names.

First, require ensures the :user parameter exists, then permit allows :email and :password.

5fill in blank

hard

Fill all three blanks to permit nested attributes :name, :email, and :profile_attributes with :age inside strong parameters.

Ruby on Rails

def user_params
  params.[1](:user).[2](:name, :email, [3]: [:age])
end

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

Arequire

Bpermit

Cprofile_attributes

Dfetch

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting to permit nested attributes properly.

Using fetch instead of require.

Use require to demand :user, permit to allow attributes, and specify nested profile_attributes with :age.