[Solved] Consider this GraphQL type definition:type User { id: ID! posts: Post } type Post { id: ID! content: String! }What is the main problem with this design if a user can have many posts? | GraphQL

GraphQL - Type Relationships

Consider this GraphQL type definition:

type User {
  id: ID!
  posts: Post
}

type Post {
  id: ID!
  content: String!
}

What is the main problem with this design if a user can have many posts?

AThe 'posts' field should be a list, not a single Post object.

BThe 'id' field is missing in User type.

CThe 'content' field should be nullable.

DThe Post type should include a reference back to User.

Step-by-Step Solution

Solution:

Step 1: Analyze the 'posts' field type
The 'posts' field is declared as a single Post, but users can have many posts.
Step 2: Identify correct type for multiple posts
To represent many posts, 'posts' should be a list like [Post!]! instead of a single Post.
Final Answer:
The 'posts' field should be a list, not a single Post object. -> Option A
Quick Check:
Multiple posts need list type, not single object [OK]

Quick Trick: Multiple related items need list type in GraphQL [OK]

Common Mistakes:

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