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Symfony-doctrine-graphql-api

Description

This library provides an single and simple entry point to read all your db using Graphql syntax. To achieve that we will need to export our db model into php entities, which will be represented by doctrine annotations, taking advantage of this doctrine annotations this library will generate the graphql schema to accessed using Graphql query syntax.

Setup

Include repository in composer.json

"repositories": [
....
    {
        "type": "git",
        "url": "https://github.com/ggarri/symfony-doctrine-graphql"
    },
....

"require": {
    "ggarri/symfony-graphql-api": "^0.6-dev"
}
....

Installing dependencies

composer install/update

Loading bundle

# AppKernel.php

use GraphqlApiBundle\GraphqlApiBundle;
...
public function registerBundles()
    {
        $bundles = array(
            ....
            new GraphqlApiBundle(),
....

Routing

Including graphql entry point in 'app/config/routing.yml'

# Adding graphql routes (127.0.0.1:8000/graphql/api?query={graphql_query}
graphql_routing:
    resource: .
    type: extra

Setup db connection

If you didn't do it yet you will need to set up doctrine database connection This library will only require an valid doctrine connection as the one above:

doctrine:
    dbal:
        driver:   "%database_driver%"
        host:     "%database_host%"
        port:     "%database_port%"
        dbname:   "%database_name%"
        user:     "%database_user%"
        password: "%database_password%"
        charset:  UTF8

    orm:
        default_entity_manager: default
        auto_generate_proxy_classes: "%kernel.debug%"
        naming_strategy: doctrine.orm.naming_strategy.underscore
        auto_mapping: true

Importing your DB Model

Once everything is setup you can start converting your db into php entity classes. For that, and as it was mentioned above, your db model will be imported from connection defined under Doctrine.dbal.default.

The above command will do all the work for you.

php app/console graphql-api:graphql:generate-schema --namespace "AppBundle\\Entity" annotation ./src/AppBundle/Entity --from-database --force

() we had use "AppBundle\\Entity" as namespace for model to be imported, and ./src/AppBundle/Entity as location folder to place each of the entity files. () Possible problems appear above

Usage

That is all, it is time to start using start reading your db with your new custimized graphql api.

(We used 127.0.0.1:8000 as server, you might have it on different name)

Curl sample

curl -XPOST -H 'Content-Type:application/graphql' -d 'query={  boardtype(id: 2) {  id, name, vatClass { amount }  } }' http://127.0.0.1:8000/graphql/api

Browser sample

http://127.0.0.1:8000/graphql/api?query={boardtype(id:2){id,name,vatClass{amount}}}

If you want to know more about Graphql syntax, go to: http://graphql.org/learn/

Troubleshooting

Using POSTGRES 9.5

In case your db is Postgres and includes Blob or jsonb types you might need to patch the postgres driver due to Blob or jsonb wasn't included in latest version of driver.

Patching Postgres driver to include new types

cp -r vendor/ggarri/graphql-api/src/Doctrine src/
patch vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractPostgreSQLDriver.php vendor/ggarri/graphql-api/src/Doctrine/patch/AbstractPostgreSQLDriver.patch

(*) Please, check if patch was applied correctly, because some types it does't. Around line 110 it has to have the following lines:

switch(true) {
    case version_compare($version, '9.4', '>='):
        return new PostgreSQL95Platform();  // THIS IS THE IMPORTANT ONE
    case version_compare($version, '9.2', '>='):
        return new PostgreSQL92Platform();
    case version_compare($version, '9.1', '>='):
        return new PostgreSQL91Platform();
    default:
        return new PostgreSqlPlatform();
}