transformToDefaultGraphQLConnection

API Docs

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Function: transformToDefaultGraphQLConnection()

transformToDefaultGraphQLConnection<RawNode, Node, Cursor>(__namedParameters): DefaultGraphQLConnection<Node>

Defined in: src/utilities/defaultGraphQLConnection.ts:246

This function is used to transform an array of objects to a standard graphql connection object.

Type Parameters

RawNode

RawNode

Node

Node = RawNode

Cursor

Cursor = string

Parameters

__namedParameters

createCursor

(rawNode) => string

createNode

(rawNode) => Node

parsedArgs

ParsedDefaultGraphQLConnectionArguments<Cursor>

rawNodes

RawNode[]

Returns

DefaultGraphQLConnection<Node>

Remarks

The logic used in this function is common to almost all graphql connection creation flows, abstracting that away into this function lets developers use a declarative way to create the graphql connection object they want and prevent code duplication.

Example

const orderBy = parsedArgs.isInverted ? asc(fields.id) : desc(fields.id);
let where;

if (parsedArgs.isInverted) {
	if (parsedArgs.cursor !== undefined) {
		where = and(eq(usersTable.id, parsedArgs.cursor), lt(usersTable.id, parsedArgs.cursor));
	}
} else {
	if (parsedArgs.cursor !== undefined) {
		where = and(eq(usersTable.id, parsedArgs.cursor), gt(usersTable.id, parsedArgs.cursor));
	}
}

const users = await drizzleClient.usersTable.findMany({
	limit: parsedArgs.limit,
	orderBy,
	where,
})

const usersConnection = transformToDefaultGraphQLConnection({
	createCursor: (rawNode) => rawNode.id,
	createNode: (rawNode) => rawNode,
	parsedArgs,
	rawNodes: users,
});