Data source integration in GraphQL - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a GraphQL query that fetches a list of users.

GraphQL

query GetUsers { users [1] { id name email } }

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Alist

Bitems

Call

Ddata

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'list' or 'items' which are not valid field names in this schema.

Leaving the blank empty causing syntax errors.

The keyword all is commonly used to fetch all records in a GraphQL query field.

2fill in blank

medium

Complete the code to add an argument that filters users by their status.

GraphQL

query GetActiveUsers { users(status: [1]) { id name } }

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AACTIVE

B"active"

C'active'

Dactive

Attempts:

3 left

💡 Hint

Common Mistakes

Omitting quotes causing syntax errors.

Using single quotes which are invalid in GraphQL argument syntax.

GraphQL arguments require string values to be enclosed in double quotes, so "active" is correct.

3fill in blank

hard

Fix the error in the mutation to add a new user by completing the missing input type.

GraphQL

mutation AddUser { addUser(input: [1]) { id name } }

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ANewUserInput

BUserInput

CAddUserInput

DCreateUserInput

Attempts:

3 left

💡 Hint

Common Mistakes

Using input types that do not exist in the schema.

Confusing input type names causing errors.

The input type for adding a user is typically named CreateUserInput in many GraphQL schemas.

4fill in blank

hard

Fill both blanks to write a query that fetches posts with their author's name and filters posts published after 2020.

GraphQL

query GetRecentPosts { posts(filter: { publishedYear: [1] }) { title author { [2] } } }

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A2020

Bname

CauthorName

D2021

Attempts:

3 left

💡 Hint

Common Mistakes

Using 2020 which includes that year, not after.

Using 'authorName' which is not a valid field.

The filter should use a year after 2020, so 2021 is correct. The author's field to get the name is name.

5fill in blank

hard

Fill all three blanks to write a mutation that updates a user's email by ID and returns the updated email and name.

GraphQL

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

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A"123"

B"[e-mail]"

Cname

D123

Attempts:

3 left

💡 Hint

Common Mistakes

Using unquoted strings for ID or email causing syntax errors.

Omitting the name field in the return selection.

The user ID should be a string with quotes: "123". The new email is also a string with quotes. To return the user's name, use the field name.