GraphQL - Mutations
What will this mutation return if the item to delete does not exist?mutation { deleteItem(id: "999") { success error } }
Assuming the server returns:{ "data": { "deleteItem": { "success": false, "error": "Item not found" } } }
What will this mutation return if the item to delete does not exist?
medium📝 query result Q5 of 15
Step-by-Step Solution
Solution:
Step 1: Analyze server response for non-existent item
The server returns success as false and an error message.Step 2: Match response to options
Only success: false, error: 'Item not found' matches the response exactly.Final Answer:
success: false, error: 'Item not found' -> Option DQuick Check:
Non-existent delete returns success false [OK]
Quick Trick: Non-existent deletes return success false with error message [OK]
Common Mistakes:
- Assuming success true even if item missing
- Ignoring error message in response
- Expecting syntax error instead of valid response
Master "Mutations" in GraphQL
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