relay-cursor-paging
Relay Cursor-Based Pagination Support for Databases
API:
getPagingParameters(args): Emits an object with limit and criteria fields based on Relay's pagination fields (e.g. first, after, last, and before).
pageable(argSpec): Emits an augmented Argument Specification with first, after, before, and last arguments.
import { pageable, getPagingParameters } from "relay-cursor-paging";
const { connectionFromPromisedArraySlice } = require("graphql-relay");
const myType = new GraphQLObjectType({
fields: () => {
relatedThings: {
type: thingConnection,
args: pageable({}), // Adds first, after, last, and before arguments
resolve: (root, args) => {
const { limit, offset } = getPagingParameters(args);
const criteria = makeCriteria(args, limit, offset);
return connectionFromPromisedArraySlice(
thingRepository.findAll(criteria),
args,
{
sliceStart: 0,
arrayLength: // count query result
}
);
}
}
}
});
