[Solved] You want to fetch a list of books with their authors' names using nested resolvers.... How should you use the parent argument in the author resolver inside Book to get the correct author name? | GraphQL

GraphQL - Resolvers

You want to fetch a list of books with their authors' names using nested resolvers. The Book type has an authorId field, and the Author type has id and name. How should you use the parent argument in the author resolver inside Book to get the correct author name?

AUse <code>parent.authorId</code> to find the author by matching <code>id</code>.

BUse <code>args.authorId</code> to find the author by matching <code>id</code>.

CUse <code>context.authorId</code> to find the author by matching <code>id</code>.

DUse <code>info.authorId</code> to find the author by matching <code>id</code>.

Step-by-Step Solution

Solution:

Step 1: Understand nested resolver data flow
The author resolver inside Book receives the book object as parent.
Step 2: Access authorId from parent to find author
Use parent.authorId to look up the author by matching id in authors data.
Final Answer:
Use parent.authorId to find the author by matching id. -> Option A
Quick Check:
Parent holds book data, use parent.authorId [OK]

Quick Trick: Parent holds book; use parent.authorId for author lookup [OK]

Common Mistakes:

Using args instead of parent for authorId
Trying to get authorId from context or info
Ignoring parent argument in nested resolver

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More GraphQL Quizzes

How should you use the parent argument in the author resolver inside Book to get the correct author name?

Step 1: Understand nested resolver data flow

Step 2: Access authorId from parent to find author

Final Answer:

Quick Check:

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