Resolver function signature in GraphQL - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a resolver function that receives the parent object.

GraphQL

const resolver = ([1], args, context, info) => { return args.id; }

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Aparams

Bparent

Croot

Dsource

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'args' as the first argument instead of 'parent'.

Confusing 'context' with the first argument.

The first argument in a resolver function is commonly called parent. It represents the result returned from the resolver on the parent field.

2fill in blank

medium

Complete the code to access the arguments passed to the resolver.

GraphQL

const resolver = (parent, [1], context, info) => { return args.name; }

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Aargs

Bvariables

Cparams

Dinputs

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'params' or 'variables' instead of 'args'.

Trying to access arguments from the 'context' argument.

The second argument in a resolver function is args. It contains the arguments passed to the field in the query.

3fill in blank

hard

Fix the error in the resolver signature by correctly naming the context argument.

GraphQL

const resolver = (parent, args, [1], info) => { return context.user.id; }

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Arequest

Bctx

Ccontext

Dsession

Attempts:

3 left

💡 Hint

Common Mistakes

Naming the context argument incorrectly as 'request' or 'session'.

Confusing context with info argument.

The third argument is context. It provides shared data like authentication info to all resolvers.

4fill in blank

hard

Fill both blanks to complete the resolver function signature with correct argument names.

GraphQL

const resolver = ([1], [2], context, info) => { return args.id; }

Drag options to blanks, or click blank then click option'

Aparent

Bargs

Cparams

Dsource

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping the order of parent and args.

Using 'params' instead of 'args'.

The first two arguments are parent and args. They represent the parent object and the arguments passed to the field.

5fill in blank

hard

Fill all three blanks to complete the full resolver function signature with correct argument names.

GraphQL

const resolver = ([1], [2], [3], info) => { return context.user; }

Drag options to blanks, or click blank then click option'

Aparent

Bargs

Ccontext

Drequest

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'request' instead of 'context'.

Changing the order of arguments.

The resolver function signature is (parent, args, context, info). These arguments provide data from the parent, the query arguments, shared context, and query info.