GraphQL - Resolvers
You want to ensure all GraphQL resolvers have access to both a database client and the current user's role via the
context argument. Which setup is most appropriate?You want to ensure all GraphQL resolvers have access to both a database client and the current user's role via the context argument. Which setup is most appropriate?
hard📝 Application Q8 of 15
Step-by-Step Solution
Solution:
Step 1: Understand context usage
Thecontextargument is designed to share per-request data like DB clients and user info.Step 2: Avoid global variables
Global variables are unsafe for concurrent requests and can cause data leaks.Step 3: Avoid passing via args
Passing DB client or user role viaargsis not standard and mixes concerns.Final Answer:
Create a context object per request containing the DB client and user role, then pass it to resolvers -> Option AQuick Check:
Context per request is best practice for shared data [OK]
Quick Trick: Use per-request context for shared data, not globals [OK]
Common Mistakes:
- Using global variables for user info or DB client
- Passing shared data through resolver args
- Not creating context per request
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