Recall & Review
beginner
What is the standard structure of a GraphQL error response?
A GraphQL error response is a JSON object with an "errors" field, which is an array of error objects. Each error object typically contains a "message" describing the error, and may include "locations" (line and column), "path" (where in the query the error occurred), and "extensions" for additional info.
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beginner
What does the "locations" field in a GraphQL error indicate?
The "locations" field shows the exact position(s) in the GraphQL query where the error happened, using line and column numbers. This helps developers quickly find the problem in their query.
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intermediate
What is the purpose of the "path" field in a GraphQL error object?
The "path" field shows the path in the response data where the error occurred. It helps identify which part of the query's result caused the error, especially in nested queries.
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intermediate
How can the "extensions" field in a GraphQL error be used?
The "extensions" field provides extra details about the error, such as error codes, classification, or custom metadata. It helps clients handle errors more precisely.
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beginner
Why does GraphQL return partial data along with errors?
GraphQL can return partial data with errors to give clients as much useful information as possible, even if some parts of the query failed. This allows clients to handle errors gracefully and still use valid data.
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What field in a GraphQL error object contains the human-readable error message?
✗ Incorrect
The "message" field contains the error description that explains what went wrong.
Which field helps locate the error in the GraphQL query by line and column?
✗ Incorrect
The "locations" field shows the line and column numbers where the error occurred in the query.
What does the "path" field in a GraphQL error indicate?
✗ Incorrect
The "path" shows where in the response data the error occurred, useful for nested queries.
Which field can contain custom error codes or classifications?
✗ Incorrect
The "extensions" field is used for extra error details like codes or classifications.
Why might a GraphQL response include both data and errors?
✗ Incorrect
GraphQL returns partial data with errors to give clients useful information even if some parts failed.
Describe the main fields in a GraphQL error object and their purposes.
Think about what info helps find and understand the error.
You got /5 concepts.
Explain why GraphQL might return partial data along with errors and how this benefits clients.
Consider how clients use data even when some parts fail.
You got /4 concepts.