Info argument in GraphQL - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to access the GraphQL query info argument in a resolver.

GraphQL

resolve(parent, args, context, [1]) { return args.id; }

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Ainfo

Broot

Ccontext

Dparams

Attempts:

3 left

💡 Hint

Common Mistakes

Using context instead of info to access query details.

Confusing root or parent with info argument.

The info argument provides details about the GraphQL query, such as the field name and schema.

2fill in blank

medium

Complete the code to get the field name from the info argument inside a resolver.

GraphQL

const fieldName = [1].fieldName;

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Aargs

Bcontext

Cinfo

Dparent

Attempts:

3 left

💡 Hint

Common Mistakes

Trying to get fieldName from args or context which do not have it.

The info argument contains the fieldName property which tells which field is being resolved.

3fill in blank

hard

Fix the error in accessing the selection set from the info argument.

GraphQL

const selections = info.fieldNodes[0].[1].selections;

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AselectionSet

Bselection

Cfields

Dnodes

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'selection' instead of 'selectionSet' causes undefined errors.

Trying to access 'fields' or 'nodes' which do not exist.

The fieldNodes[0] object has a selectionSet property that contains the selections of the query.

4fill in blank

hard

Fill both blanks to extract the names of selected fields from the info argument.

GraphQL

const fieldNames = info.fieldNodes[0].[1].selections.map(sel => sel.[2].value);

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AselectionSet

Bname

CfieldName

Dfields

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'fieldName' instead of 'name' inside the map function.

Using 'fields' which is not a valid property here.

The selectionSet contains the selections, and each selection has a name property for the field name.

5fill in blank

hard

Fill all three blanks to check if a specific field is requested in the query using the info argument.

GraphQL

const selections = info.fieldNodes[0].[1].selections;
const requestedFields = selections.map(sel => sel.[2].value);
const hasField = requestedFields.includes([3]);

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AselectionSet

Bname

C'email'

D'id'

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'name' instead of 'name.value' causes errors.

Checking for a field name without quotes or wrong quotes.

We access the selectionSet to get selections, then map to get each field's name.value. Finally, we check if the field 'email' is included.