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dataloader-bundle

by overblog

This bundle allows to easy use DataLoaderPHP in your Symfony project through configuration.

DataLoaderBundle

This bundle allows to easy use DataLoaderPHP
in your Symfony 2 / 3 project by configuring it through configuration.

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License

Requirements

This library requires PHP >= 5.5 to work.

Installation

Download the Bundle

composer require overblog/dataloader-bundle

Enable the Bundle

class AppKernel extends Kernel
{
    public function registerBundles()
    {
        $bundles = [
            // ...

            new Overblog\DataLoaderBundle\OverblogDataLoaderBundle(),
        ];

        // ...
    }

    // ...
}

Getting Started

Here a fast example of how you can use the bundle

overblog_dataloader:
    defaults:
        # required
        promise_adapter: "overblog_dataloader.react_promise_adapter"
        # optional
        factory: ~
        options:
            batch: true
            cache: true
            max_batch_size: ~
            cache_map: "overblog_dataloader.cache_map"
            cache_key_fn: ~
    loaders:
        users:
            alias: "users_dataloader"
            batch_load_fn: "@app.user:getUsers"
        posts: 
            batch_load_fn: "Post::getPosts"
            options:
                max_batch_size: 15
                batch: false
                cache: false
                cache_map: "app.cache.map"
                cache_key_fn: "@app.cache"
        images:
            factory: my_factory
            batch_load_fn: "Image\\Loader::get"

This example will create 3 loaders as services:
- "@overblog_dataloader.users_loader" with alias "@users_dataloader"
- "@overblog_dataloader.posts_loader"
- "@overblog_dataloader.images_loader" create using custom factory function "my_factory"

Here the list of existing promise adapters:

Combine with GraphQLBundle

This bundle can be use with GraphQLBundle.
Here an example:

  • Bundle config
#graphql
overblog_graphql:
    definitions:
        schema:
            query: Query
    services:
        promise_adapter: "webonyx_graphql.sync_promise_adapter"

#dataloader
overblog_dataloader:
    defaults:
        promise_adapter: "overblog_dataloader.webonyx_graphql_sync_promise_adapter"
    loaders:
        ships:
            alias: "ships_loader"
            batch_load_fn: "@app.graph.ships_loader:all"
  • Batch loader function
services:
    app.graph.ship_repository:
        class: AppBundle\Entity\Repository\ShipRepository
        factory: ["@doctrine.orm.entity_manager", getRepository]
        arguments:
            - AppBundle\Entity\Ship

    app.graph.ships_loader:
        class: AppBundle\GraphQL\Loader\ShipLoader
        arguments:
            - "@overblog_graphql.promise_adapter"
            - "@app.graph.ship_repository"
<?php

namespace AppBundle\GraphQL\Loader;

use AppBundle\Entity\Repository\ShipRepository;
use GraphQL\Executor\Promise\PromiseAdapter;

class ShipLoader
{
    private $promiseAdapter;

    private $repository;

    public function __construct(PromiseAdapter $promiseAdapter, ShipRepository $repository)
    {
        $this->promiseAdapter = $promiseAdapter;
        $this->repository = $repository;
    }

    public function all(array $shipsIDs)
    {
        $qb = $this->repository->createQueryBuilder('s');
        $qb->add('where', $qb->expr()->in('s.id', ':ids'));
        $qb->setParameter('ids', $shipsIDs);
        $ships = $qb->getQuery()->getResult();

        return $this->promiseAdapter->all($ships);
    }
}
  • Usage in a resolver
    public function resolveShip($shipsID)
    {
        $promise = $this->container->get('ships_loader')->load($shipsID);

        return $promise;
    }

This is an example using the sync promise adapter of Webonyx.

License

Overblog/DataLoaderBundle is released under the MIT license.

The MIT License (MIT)

Copyright (c) Overblog

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
overblog_dataloader:
defaults: # Required
promise_adapter: ~ # Required
factory: ~
options:
batch: true
max_batch_size: ~
cache: true
cache_key_fn: ~
cache_map: overblog_dataloader.cache_map
loaders:

# Prototype
name:
factory: ~
alias: ~
batch_load_fn: ~ # Required
options:
batch: true
max_batch_size: ~
cache: true
cache_key_fn: ~
cache_map: overblog_dataloader.cache_map