mirror of
https://github.com/retailcrm/graphql-php.git
synced 2024-11-28 07:46:02 +03:00
354 lines
12 KiB
HTML
Executable File
354 lines
12 KiB
HTML
Executable File
<!DOCTYPE html>
|
|
<!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]-->
|
|
<!--[if gt IE 8]><!--> <html class="no-js" lang="en" > <!--<![endif]-->
|
|
<head>
|
|
<meta charset="utf-8">
|
|
<meta http-equiv="X-UA-Compatible" content="IE=edge">
|
|
<meta name="viewport" content="width=device-width, initial-scale=1.0">
|
|
|
|
|
|
<link rel="shortcut icon" href="../img/favicon.ico">
|
|
<title>Getting Started - graphql-php</title>
|
|
<link href='https://fonts.googleapis.com/css?family=Lato:400,700|Roboto+Slab:400,700|Inconsolata:400,700' rel='stylesheet' type='text/css'>
|
|
|
|
<link rel="stylesheet" href="../css/theme.css" type="text/css" />
|
|
<link rel="stylesheet" href="../css/theme_extra.css" type="text/css" />
|
|
<link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/github.min.css">
|
|
|
|
<script>
|
|
// Current page data
|
|
var mkdocs_page_name = "Getting Started";
|
|
var mkdocs_page_input_path = "getting-started.md";
|
|
var mkdocs_page_url = null;
|
|
</script>
|
|
|
|
<script src="../js/jquery-2.1.1.min.js" defer></script>
|
|
<script src="../js/modernizr-2.8.3.min.js" defer></script>
|
|
<script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/highlight.min.js"></script>
|
|
<script>hljs.initHighlightingOnLoad();</script>
|
|
|
|
</head>
|
|
|
|
<body class="wy-body-for-nav" role="document">
|
|
|
|
<div class="wy-grid-for-nav">
|
|
|
|
|
|
<nav data-toggle="wy-nav-shift" class="wy-nav-side stickynav">
|
|
<div class="wy-side-nav-search">
|
|
<a href=".." class="icon icon-home"> graphql-php</a>
|
|
<div role="search">
|
|
<form id ="rtd-search-form" class="wy-form" action="../search.html" method="get">
|
|
<input type="text" name="q" placeholder="Search docs" title="Type search term here" />
|
|
</form>
|
|
</div>
|
|
</div>
|
|
|
|
<div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="main navigation">
|
|
<ul class="current">
|
|
|
|
|
|
<li class="toctree-l1">
|
|
|
|
<a class="" href="..">About</a>
|
|
</li>
|
|
|
|
<li class="toctree-l1 current">
|
|
|
|
<a class="current" href="./">Getting Started</a>
|
|
<ul class="subnav">
|
|
|
|
<li class="toctree-l2"><a href="#prerequisites">Prerequisites</a></li>
|
|
|
|
|
|
<li class="toctree-l2"><a href="#installation">Installation</a></li>
|
|
|
|
|
|
<li class="toctree-l2"><a href="#upgrading">Upgrading</a></li>
|
|
|
|
|
|
<li class="toctree-l2"><a href="#install-tools-optional">Install Tools (optional)</a></li>
|
|
|
|
|
|
<li class="toctree-l2"><a href="#hello-world">Hello World</a></li>
|
|
|
|
|
|
<li class="toctree-l2"><a href="#blog-example">Blog example</a></li>
|
|
|
|
|
|
</ul>
|
|
</li>
|
|
|
|
<li class="toctree-l1">
|
|
|
|
<a class="" href="../complementary-tools/">Complementary Tools</a>
|
|
</li>
|
|
|
|
<li class="toctree-l1">
|
|
|
|
<span class="caption-text">Type Definitions</span>
|
|
<ul class="subnav">
|
|
<li class="">
|
|
|
|
<a class="" href="../type-system/">Introduction</a>
|
|
</li>
|
|
<li class="">
|
|
|
|
<a class="" href="../type-system/object-types/">Object Types</a>
|
|
</li>
|
|
<li class="">
|
|
|
|
<a class="" href="../type-system/scalar-types/">Scalar Types</a>
|
|
</li>
|
|
<li class="">
|
|
|
|
<a class="" href="../type-system/enum-types/">Enumeration Types</a>
|
|
</li>
|
|
<li class="">
|
|
|
|
<a class="" href="../type-system/lists-and-nonnulls/">Lists and Non-Null</a>
|
|
</li>
|
|
<li class="">
|
|
|
|
<a class="" href="../type-system/interfaces/">Interfaces</a>
|
|
</li>
|
|
<li class="">
|
|
|
|
<a class="" href="../type-system/unions/">Unions</a>
|
|
</li>
|
|
<li class="">
|
|
|
|
<a class="" href="../type-system/input-types/">Mutations and Input Types</a>
|
|
</li>
|
|
<li class="">
|
|
|
|
<a class="" href="../type-system/directives/">Directives</a>
|
|
</li>
|
|
<li class="">
|
|
|
|
<a class="" href="../type-system/schema/">Schema</a>
|
|
</li>
|
|
<li class="">
|
|
|
|
<a class="" href="../type-system/type-language/">Using Type Language</a>
|
|
</li>
|
|
</ul>
|
|
</li>
|
|
|
|
<li class="toctree-l1">
|
|
|
|
<a class="" href="../executing-queries/">Executing Queries</a>
|
|
</li>
|
|
|
|
<li class="toctree-l1">
|
|
|
|
<a class="" href="../data-fetching/">Fetching Data</a>
|
|
</li>
|
|
|
|
<li class="toctree-l1">
|
|
|
|
<a class="" href="../error-handling/">Handling Errors</a>
|
|
</li>
|
|
|
|
<li class="toctree-l1">
|
|
|
|
<a class="" href="../security/">Security</a>
|
|
</li>
|
|
|
|
<li class="toctree-l1">
|
|
|
|
<a class="" href="../how-it-works/">How it works</a>
|
|
</li>
|
|
|
|
<li class="toctree-l1">
|
|
|
|
<a class="" href="../reference/">Class Reference</a>
|
|
</li>
|
|
|
|
</ul>
|
|
</div>
|
|
|
|
</nav>
|
|
|
|
<section data-toggle="wy-nav-shift" class="wy-nav-content-wrap">
|
|
|
|
|
|
<nav class="wy-nav-top" role="navigation" aria-label="top navigation">
|
|
<i data-toggle="wy-nav-top" class="fa fa-bars"></i>
|
|
<a href="..">graphql-php</a>
|
|
</nav>
|
|
|
|
|
|
<div class="wy-nav-content">
|
|
<div class="rst-content">
|
|
<div role="navigation" aria-label="breadcrumbs navigation">
|
|
<ul class="wy-breadcrumbs">
|
|
<li><a href="..">Docs</a> »</li>
|
|
|
|
|
|
|
|
<li>Getting Started</li>
|
|
<li class="wy-breadcrumbs-aside">
|
|
|
|
</li>
|
|
</ul>
|
|
<hr/>
|
|
</div>
|
|
<div role="main">
|
|
<div class="section">
|
|
|
|
<h1 id="prerequisites">Prerequisites</h1>
|
|
<p>This documentation assumes your familiarity with GraphQL concepts. If it is not the case -
|
|
first learn about GraphQL on <a href="http://graphql.org/learn/">the official website</a>.</p>
|
|
<h1 id="installation">Installation</h1>
|
|
<p>Using <a href="https://getcomposer.org/doc/00-intro.md">composer</a>, run:</p>
|
|
<pre><code class="sh">composer require webonyx/graphql-php
|
|
</code></pre>
|
|
|
|
<h1 id="upgrading">Upgrading</h1>
|
|
<p>We try to keep library releases backwards compatible. But when breaking changes are inevitable
|
|
they are explained in <a href="https://github.com/webonyx/graphql-php/blob/master/UPGRADE.md">upgrade instructions</a>.</p>
|
|
<h1 id="install-tools-optional">Install Tools (optional)</h1>
|
|
<p>While it is possible to communicate with GraphQL API using regular HTTP tools it is way
|
|
more convenient for humans to use <a href="https://github.com/graphql/graphiql">GraphiQL</a> - an in-browser
|
|
IDE for exploring GraphQL APIs.</p>
|
|
<p>It provides syntax-highlighting, auto-completion and auto-generated documentation for
|
|
GraphQL API.</p>
|
|
<p>The easiest way to use it is to install one of the existing Google Chrome extensions:</p>
|
|
<ul>
|
|
<li><a href="https://chrome.google.com/webstore/detail/chromeiql/fkkiamalmpiidkljmicmjfbieiclmeij">ChromeiQL</a></li>
|
|
<li><a href="https://chrome.google.com/webstore/detail/graphiql-feen/mcbfdonlkfpbfdpimkjilhdneikhfklp">GraphiQL Feen</a></li>
|
|
</ul>
|
|
<p>Alternatively, you can follow instructions on <a href="https://github.com/graphql/graphiql">the GraphiQL</a>
|
|
page and install it locally.</p>
|
|
<h1 id="hello-world">Hello World</h1>
|
|
<p>Let's create a type system that will be capable to process following simple query:</p>
|
|
<pre><code>query {
|
|
echo(message: "Hello World")
|
|
}
|
|
</code></pre>
|
|
|
|
<p>To do so we need an object type with field <code>echo</code>:</p>
|
|
<pre><code class="php"><?php
|
|
use GraphQL\Type\Definition\ObjectType;
|
|
use GraphQL\Type\Definition\Type;
|
|
|
|
$queryType = new ObjectType([
|
|
'name' => 'Query',
|
|
'fields' => [
|
|
'echo' => [
|
|
'type' => Type::string(),
|
|
'args' => [
|
|
'message' => Type::nonNull(Type::string()),
|
|
],
|
|
'resolve' => function ($root, $args) {
|
|
return $root['prefix'] . $args['message'];
|
|
}
|
|
],
|
|
],
|
|
]);
|
|
|
|
</code></pre>
|
|
|
|
<p>(Note: type definition can be expressed in <a href="../type-system/#type-definition-styles">different styles</a>,
|
|
but this example uses <strong>inline</strong> style for simplicity)</p>
|
|
<p>The interesting piece here is <strong>resolve</strong> option of field definition. It is responsible for returning
|
|
a value of our field. Values of <strong>scalar</strong> fields will be directly included in response while values of
|
|
<strong>composite</strong> fields (objects, interfaces, unions) will be passed down to nested field resolvers
|
|
(not in this example though).</p>
|
|
<p>Now when our type is ready, let's create GraphQL endpoint file for it <strong>graphql.php</strong>:</p>
|
|
<pre><code class="php"><?php
|
|
use GraphQL\GraphQL;
|
|
use GraphQL\Type\Schema;
|
|
|
|
$schema = new Schema([
|
|
'query' => $queryType
|
|
]);
|
|
|
|
$rawInput = file_get_contents('php://input');
|
|
$input = json_decode($rawInput, true);
|
|
$query = $input['query'];
|
|
$variableValues = isset($input['variables']) ? $input['variables'] : null;
|
|
|
|
try {
|
|
$rootValue = ['prefix' => 'You said: '];
|
|
$result = GraphQL::executeQuery($schema, $query, $rootValue, null, $variableValues);
|
|
$output = $result->toArray();
|
|
} catch (\Exception $e) {
|
|
$output = [
|
|
'errors' => [
|
|
[
|
|
'message' => $e->getMessage()
|
|
]
|
|
]
|
|
];
|
|
}
|
|
header('Content-Type: application/json');
|
|
echo json_encode($output);
|
|
</code></pre>
|
|
|
|
<p>Our example is finished. Try it by running:</p>
|
|
<pre><code class="sh">php -S localhost:8080 graphql.php
|
|
curl http://localhost:8080 -d '{"query": "query { echo(message: \"Hello World\") }" }'
|
|
</code></pre>
|
|
|
|
<p>Check out the full <a href="https://github.com/webonyx/graphql-php/blob/master/examples/00-hello-world">source code</a> of this example
|
|
which also includes simple mutation.</p>
|
|
<p>Obviously hello world only scratches the surface of what is possible.
|
|
So check out next example, which is closer to real-world apps.
|
|
Or keep reading about <a href="../type-system/">schema definition</a>.</p>
|
|
<h1 id="blog-example">Blog example</h1>
|
|
<p>It is often easier to start with a full-featured example and then get back to documentation
|
|
for your own work. </p>
|
|
<p>Check out <a href="https://github.com/webonyx/graphql-php/tree/master/examples/01-blog">Blog example of GraphQL API</a>.
|
|
It is quite close to real-world GraphQL hierarchies. Follow instructions and try it yourself in ~10 minutes.</p>
|
|
|
|
</div>
|
|
</div>
|
|
<footer>
|
|
|
|
<div class="rst-footer-buttons" role="navigation" aria-label="footer navigation">
|
|
|
|
<a href="../complementary-tools/" class="btn btn-neutral float-right" title="Complementary Tools">Next <span class="icon icon-circle-arrow-right"></span></a>
|
|
|
|
|
|
<a href=".." class="btn btn-neutral" title="About"><span class="icon icon-circle-arrow-left"></span> Previous</a>
|
|
|
|
</div>
|
|
|
|
|
|
<hr/>
|
|
|
|
<div role="contentinfo">
|
|
<!-- Copyright etc -->
|
|
|
|
</div>
|
|
|
|
Built with <a href="http://www.mkdocs.org">MkDocs</a> using a <a href="https://github.com/snide/sphinx_rtd_theme">theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>.
|
|
</footer>
|
|
|
|
</div>
|
|
</div>
|
|
|
|
</section>
|
|
|
|
</div>
|
|
|
|
<div class="rst-versions" role="note" style="cursor: pointer">
|
|
<span class="rst-current-version" data-toggle="rst-current-version">
|
|
|
|
|
|
<span><a href=".." style="color: #fcfcfc;">« Previous</a></span>
|
|
|
|
|
|
<span style="margin-left: 15px"><a href="../complementary-tools/" style="color: #fcfcfc">Next »</a></span>
|
|
|
|
</span>
|
|
</div>
|
|
<script>var base_url = '..';</script>
|
|
<script src="../js/theme.js" defer></script>
|
|
<script src="../search/main.js" defer></script>
|
|
|
|
</body>
|
|
</html>
|