Single endpoint architecture in GraphQL - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a GraphQL query field named 'user'.

GraphQL

type Query { user(id: ID!): [1] }

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

ABoolean

BString

CInt

DUser

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing a scalar type like String instead of the User type.

Using Boolean or Int which do not represent user objects.

The 'user' query returns a User type object, so the correct return type is User.

2fill in blank

medium

Complete the code to define a GraphQL mutation field named 'addUser'.

GraphQL

type Mutation { addUser(input: AddUserInput!): [1] }

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

AUser

BString

CInt

DBoolean

Attempts:

3 left

💡 Hint

Common Mistakes

Returning Boolean instead of the User object.

Returning a scalar type like String or Int.

The 'addUser' mutation returns the newly created User object.

3fill in blank

hard

Fix the error in the GraphQL schema by completing the type definition for 'Post'.

GraphQL

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

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

AInt

BString

CUser

DBoolean

Attempts:

3 left

💡 Hint

Common Mistakes

Using String or Int instead of the User type for author.

Using Boolean which is not appropriate here.

The 'author' field should reference the User type to link the post to its author.

4fill in blank

hard

Fill both blanks to complete the GraphQL query for fetching posts with their authors.

GraphQL

query { posts { id title author { [1] [2] } } }

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Aid

Bname

Cemail

Dage

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing email or age which may not be required.

Selecting only one field instead of both.

The author object should include id and name fields to identify the author.

5fill in blank

hard

Fill all three blanks to complete the GraphQL mutation for updating a user's email.

GraphQL

mutation { updateUser(id: [1], input: { email: [2] }) { [3] } }

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

A"123"

B"[e-mail]"

Cemail

Did

Attempts:

3 left

💡 Hint

Common Mistakes

Omitting quotes around string values.

Requesting the id field instead of email in the response.

Using numeric or unquoted values for id or email.

The mutation requires the user ID as a string, the new email as a string, and requests the updated email field in the response.