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@cortical/messaging

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@cortical/messaging

An extension for Messaging implementation on Cortical based on Apollo GraphQL Subscription Redis Adapter

0.0.10
latest
69

Supply Chain Security

100

Vulnerability

82

Quality

76

Maintenance

100

License

Version published
Weekly downloads
4
100%
Maintainers
1
Weekly downloads
 
Created

CortexQL DataLoader

This is a simple CortexQL wrapper for Facebook's DataLoader

Usage

In your api directory create the directory loaders

# api/loaders/UserLoader.ts

import { DataLoader } from '@cortexql/dataloader';
import { User } from '../types/User';

export type Key = Pick<User, 'id'>;

export class UserLoader extends DataLoader<Key, User> {

  // batch first
  batchLoad(keys: Key[]) {
    return Promise.all(
      keys.map(key => User.findOne(key)),
    );
  }

}

In your context file api/context/index.ts

import { BaseContext } from '@cortexql/core';
import { UserLoader } from '../loaders/UserLoader';

export class Context extends BaseContext {
  userLoader = new UserLoader(this);
}

In whatever resolver api/query/user.ts

import { Context } from '../context';
import { User } from '../types/User';

export type Arguments {
  id: User['id'];
}

export async function resolveUser(args: Arguments, context: Context) {
  return await context.userLoader.load({ id: args.id });
}

FAQs

Package last updated on 27 Oct 2018

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