Required fields with non-null (!) in GraphQL - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to make the name field required in this GraphQL type.

GraphQL

type User {
  id: ID!
  name: String[1]
  age: Int
}

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

A!

B?

D$

Attempts:

3 left

💡 Hint

Common Mistakes

Using a question mark ? which is not valid in GraphQL.

Leaving the field without any symbol, making it optional.

In GraphQL, adding an exclamation mark ! after a type makes the field required (non-null).

2fill in blank

medium

Complete the code to make the email field required and of type Email.

GraphQL

type User {
  id: ID!
  email: Email[1]
}

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

B!

C?

D$

Attempts:

3 left

💡 Hint

Common Mistakes

Leaving the field optional by not adding !.

Using invalid symbols like ? or $.

Adding ! after the type makes the email field required (non-null).

3fill in blank

hard

Fix the error in this GraphQL input type by making the password field required.

GraphQL

input LoginInput {
  username: String!
  password: String[1]
}

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

B!

C?

D#

Attempts:

3 left

💡 Hint

Common Mistakes

Leaving the field optional by missing !.

Using invalid symbols like ? or #.

The password field needs an exclamation mark ! to be required (non-null).

4fill in blank

hard

Fill both blanks to make title and content fields required in this GraphQL type.

GraphQL

type Post {
  id: ID!
  title: String[1]
  content: String[2]
}

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

A!

B?

D$

Attempts:

3 left

💡 Hint

Common Mistakes

Using different symbols for each field.

Leaving one or both fields optional by missing !.

Adding ! after the type makes both title and content required fields.

5fill in blank

hard

Fill all three blanks to make username, email, and age required fields in this GraphQL input type.

GraphQL

input RegisterInput {
  username: String[1]
  email: String[2]
  age: Int[3]
}

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

A!

B?

D#

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing symbols or leaving some fields optional.

Using invalid symbols like ? or #.

All three fields need ! to be required (non-null) in GraphQL input types.