GraphQL - Type Relationships
Find the mistake in this GraphQL query for one-to-many relationship:
{ author(id: "5") { name book { title } } }
Find the mistake in this GraphQL query for one-to-many relationship: { author(id: "5") { name book { title } } }
medium📝 Debug Q7 of 15
Step-by-Step Solution
Solution:
Step 1: Check field name for many side
Since author has many books, the field should be plural 'books' returning a list.Step 2: Correct field name usage
Using 'book' (singular) causes error or wrong output; 'books' is correct.Final Answer:
Field 'book' should be 'books' as it returns a list -> Option BQuick Check:
Use plural field for list returns [OK]
Quick Trick: Use plural field names for lists in queries [OK]
Common Mistakes:
- Using singular field name for list fields
- Omitting required query arguments
- Misnaming nested fields
Master "Type Relationships" in GraphQL
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