Initial commit

DependencyInjection/Configuration.php

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+<?php
+
+namespace EzSystems\RESTAPIExtensionExampleBundle\DependencyInjection;
+
+use Symfony\Component\Config\Definition\Builder\TreeBuilder;
+use Symfony\Component\Config\Definition\ConfigurationInterface;
+
+/**
+ * Class Configuration
+ * @package EzSystems\RESTAPIExtensionExampleBundle\DependencyInjection
+ */
+class Configuration implements ConfigurationInterface
+{
+    /**
+     * @return \Symfony\Component\Config\Definition\Builder\TreeBuilder
+     */
+    public function getConfigTreeBuilder()
+    {
+        $treeBuilder = new TreeBuilder();
+        $rootNode = $treeBuilder->root('ez_systems_restapi_extension_example');
+        return $treeBuilder;
+    }
+}

DependencyInjection/EzSystemsRESTAPIExtensionExampleExtension.php

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+<?php
+
+namespace EzSystems\RESTAPIExtensionExampleBundle\DependencyInjection;
+
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\Config\FileLocator;
+use Symfony\Component\HttpKernel\DependencyInjection\Extension;
+use Symfony\Component\DependencyInjection\Loader;
+
+/**
+ * Class EzSystemsRESTAPIExtensionExampleExtension
+ * @package EzSystems\RESTAPIExtensionExampleBundle\DependencyInjection
+ */
+class EzSystemsRESTAPIExtensionExampleExtension extends Extension
+{
+    /**
+     * @param array $configs
+     * @param \Symfony\Component\DependencyInjection\ContainerBuilder $container
+     */
+    public function load(array $configs, ContainerBuilder $container)
+    {
+        $configuration = new Configuration();
+        $config = $this->processConfiguration($configuration, $configs);
+
+        $loader = new Loader\YamlFileLoader($container, new FileLocator(__DIR__.'/../Resources/config'));
+        $loader->load('services.yml');
+    }
+}

EzSystemsRESTAPIExtensionExampleBundle.php

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+<?php
+
+namespace EzSystems\RESTAPIExtensionExampleBundle;
+
+use Symfony\Component\HttpKernel\Bundle\Bundle;
+
+/**
+ * Class EzSystemsRESTAPIExtensionExampleBundle
+ * @package EzSystems\RESTAPIExtensionExampleBundle
+ */
+class EzSystemsRESTAPIExtensionExampleBundle extends Bundle
+{
+}

Resources/config/routing.yml

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+ez_systems_restapi_extension_example_hello:
+    path: /rest/example/hello/{name}
+    defaults:
+        _controller: ez_systems_restapi_extension_example.controller:hello
+    methods: [GET]

Resources/config/services.yml

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+parameters:
+    ez_systems_restapi_extension_example.controller.class: EzSystems\RESTAPIExtensionExampleBundle\Rest\Controller\RESTExampleController
+    ez_systems_restapi_extension_example.value_object_visitor.class: EzSystems\RESTAPIExtensionExampleBundle\Rest\ValueObjectVisitor\Hello
+    ez_systems_restapi_extension_example.input_parser.class: EzSystems\RESTAPIExtensionExampleBundle\Rest\InputParser\Hello
+services:
+    ez_systems_restapi_extension_example.controller:
+        class: %ez_systems_restapi_extension_example.controller.class%
+    ez_systems_restapi_extension_example.value_object_visitor:
+        parent: ezpublish_rest.output.value_object_visitor.base
+        class: %ez_systems_restapi_extension_example.value_object_visitor.class%
+        tags:
+            - { name: ezpublish_rest.output.value_object_visitor, type: EzSystems\RESTAPIExtensionExampleBundle\Rest\Values\Hello }
+    ez_systems_restapi_extension_example.input_parser:
+        parent: ezpublish_rest.input.parser
+        class: %ez_systems_restapi_extension_example.input_parser.class%
+        tags:
+            - { name: ezpublish_rest.input.parser, mediaType: application/vnd.ez.api.Hello }
+

Resources/views/Default/index.html.twig

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+Hello World!

Rest/Controller/RESTExampleController.php

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+<?php
+
+namespace EzSystems\RESTAPIExtensionExampleBundle\Rest\Controller;
+
+use EzSystems\RESTAPIExtensionExampleBundle\Rest\Values\Hello;
+use eZ\Publish\Core\REST\Server\Controller;
+
+/**
+ * Class RESTExampleController
+ * @package EzSystems\RESTAPIExtensionExampleBundle\Rest\Controller
+ */
+class RESTExampleController extends Controller
+{
+    /**
+     * @param $name
+     * @return \EzSystems\RESTAPIExtensionExampleBundle\Rest\Values\Hello
+     */
+    public function hello($name)
+    {
+        return new Hello($name);
+    }
+}

Rest/InputParser/Hello.php

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+<?php
+
+namespace EzSystems\RESTAPIExtensionExampleBundle\Rest\InputParser;
+
+use eZ\Publish\Core\REST\Common\Input\BaseParser;
+use eZ\Publish\Core\REST\Common\Input\ParsingDispatcher;
+use eZ\Publish\Core\REST\Common\Exceptions;
+use EzSystems\RESTAPIExtensionExampleBundle\Rest\Values\Hello as HelloValue;
+
+/**
+ * Class Hello
+ * @package EzSystems\RESTAPIExtensionExampleBundle\Rest\InputParser
+ */
+class Hello extends BaseParser
+{
+    /**
+     * @param array $data
+     * @param \eZ\Publish\Core\REST\Common\Input\ParsingDispatcher $parsingDispatcher
+     * @return \EzSystems\RESTAPIExtensionExampleBundle\Rest\Values\Hello
+     */
+    public function parse(array $data, ParsingDispatcher $parsingDispatcher)
+    {
+        if (!isset($data['name'])) {
+            throw new Exceptions\Parser("Missing or ivalid 'name' element for Hello.");
+        }
+        return new HelloValue($data['name']);
+    }
+}

Rest/ValueObjectVisitor/Hello.php

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+<?php
+
+namespace EzSystems\RESTAPIExtensionExampleBundle\Rest\ValueObjectVisitor;
+
+use eZ\Publish\Core\REST\Common\Output\Generator;
+use eZ\Publish\Core\REST\Common\Output\ValueObjectVisitor;
+use eZ\Publish\Core\REST\Common\Output\Visitor;
+
+/**
+ * Class Hello
+ * @package EzSystems\RESTAPIExtensionExampleBundle\Rest\ValueObjectVisitor
+ */
+class Hello extends ValueObjectVisitor
+{
+    /**
+     * @param \eZ\Publish\Core\REST\Common\Output\Visitor $visitor
+     * @param \eZ\Publish\Core\REST\Common\Output\Generator $generator
+     * @param mixed $data
+     */
+    public function visit(Visitor $visitor, Generator $generator, $data)
+    {
+        $generator->startHashElement("Hello");
+        $generator->startAttribute("name", $data->name);
+        $generator->endAttribute("name");
+        $generator->endHashElement("Hello");
+    }
+}

Rest/Values/Hello.php

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+<?php
+
+namespace EzSystems\RESTAPIExtensionExampleBundle\Rest\Values;
+
+use eZ\Publish\API\Repository\Values\ValueObject;
+
+/**
+ * Class Hello
+ * @package EzSystems\RESTAPIExtensionExampleBundle\Rest\Values
+ */
+class Hello extends ValueObject
+{
+    /**
+     * @var string
+     */
+    public $name;
+
+    /**
+     * Hello constructor.
+     * @param string $name
+     */
+    public function __construct(string $name)
+    {
+        parent::__construct();
+        $this->name = $name;
+    }
+}