Spotify.NET/docs/pagination/index.html

20 lines
18 KiB
HTML
Raw Normal View History

<!doctype html>
<html lang="en" dir="ltr">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<meta name="generator" content="Docusaurus v2.0.0-beta.4">
<title data-react-helmet="true">Pagination | SpotifyAPI-NET</title><meta data-react-helmet="true" property="og:url" content="https://johnnycrazy.github.io/SpotifyAPI-NET/docs/pagination"><meta data-react-helmet="true" name="docusaurus_locale" content="en"><meta data-react-helmet="true" name="docusaurus_version" content="current"><meta data-react-helmet="true" name="docusaurus_tag" content="docs-default-current"><meta data-react-helmet="true" property="og:title" content="Pagination | SpotifyAPI-NET"><meta data-react-helmet="true" name="description" content="When working with Spotify responses, you will often encounter the Paging type."><meta data-react-helmet="true" property="og:description" content="When working with Spotify responses, you will often encounter the Paging type."><link data-react-helmet="true" rel="shortcut icon" href="/SpotifyAPI-NET/img/favicon.ico"><link data-react-helmet="true" rel="canonical" href="https://johnnycrazy.github.io/SpotifyAPI-NET/docs/pagination"><link data-react-helmet="true" rel="alternate" href="https://johnnycrazy.github.io/SpotifyAPI-NET/docs/pagination" hreflang="en"><link data-react-helmet="true" rel="alternate" href="https://johnnycrazy.github.io/SpotifyAPI-NET/docs/pagination" hreflang="x-default"><link rel="stylesheet" href="/SpotifyAPI-NET/assets/css/styles.834af7f3.css">
<link rel="preload" href="/SpotifyAPI-NET/assets/js/runtime~main.40ab63fe.js" as="script">
<link rel="preload" href="/SpotifyAPI-NET/assets/js/main.29a3befa.js" as="script">
</head>
<body>
<script>!function(){function t(t){document.documentElement.setAttribute("data-theme",t)}var e=function(){var t=null;try{t=localStorage.getItem("theme")}catch(t){}return t}();t(null!==e?e:"light")}()</script><div id="__docusaurus">
<div><a href="#" class="skipToContent_1oUP">Skip to main content</a></div><nav class="navbar navbar--fixed-top"><div class="navbar__inner"><div class="navbar__items"><button aria-label="Navigation bar toggle" class="navbar__toggle clean-btn" type="button" tabindex="0"><svg width="30" height="30" viewBox="0 0 30 30" aria-hidden="true"><path stroke="currentColor" stroke-linecap="round" stroke-miterlimit="10" stroke-width="2" d="M4 7h22M4 15h22M4 23h22"></path></svg></button><a class="navbar__brand" href="/SpotifyAPI-NET/"><img src="/SpotifyAPI-NET/img/logo.svg" alt="SpotifyAPI-NET" class="themedImage_1VuW themedImage--light_3UqQ navbar__logo"><img src="/SpotifyAPI-NET/img/logo.svg" alt="SpotifyAPI-NET" class="themedImage_1VuW themedImage--dark_hz6m navbar__logo"><b class="navbar__title">SpotifyAPI-NET</b></a><div class="navbar__item dropdown dropdown--hoverable"><a class="navbar__item navbar__link">Docs</a><ul class="dropdown__menu"><li><a class="dropdown__link" href="/SpotifyAPI-NET/docs/introduction">6.X (current)</a></li><li><a class="dropdown__link" href="/SpotifyAPI-NET/docs/5.1.1/home">5.1.1</a></li></ul></div></div><div class="navbar__items navbar__items--right"><a href="https://github.com/JohnnyCrazy/SpotifyAPI-NET" target="_blank" rel="noopener noreferrer" class="navbar__item navbar__link"><span>GitHub<svg width="13.5" height="13.5" aria-hidden="true" viewBox="0 0 24 24" class="iconExternalLink_3J9K"><path fill="currentColor" d="M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z"></path></svg></span></a><div class="react-toggle toggle_3Zt9 react-toggle--disabled"><div class="react-toggle-track" role="button" tabindex="-1"><div class="react-toggle-track-check"><span class="toggle_71bT">🌜</span></div><div class="react-toggle-track-x"><span class="toggle_71bT">🌞</span></div><div class="react-toggle-thumb"></div></div><input type="checkbox" class="react-toggle-screenreader-only" aria-label="Switch between dark and light mode"></div></div></div><div role="presentation" class="navbar-sidebar__backdrop"></div></nav><div class="main-wrapper docs-wrapper doc-page"><div class="docPage_31aa"><button class="clean-btn backToTopButton_35hR" type="button" title="Scroll to top"><svg viewBox="0 0 24 24" width="28"><path d="M7.41 15.41L12 10.83l4.59 4.58L18 14l-6-6-6 6z" fill="currentColor"></path></svg></button><aside class="docSidebarContainer_3Kbt"><div class="sidebar_15mo"><nav class="menu thin-scrollbar menu_Bmed menuWithAnnouncementBar_2WvA"><ul class="menu__list"><li class="menu__list-item"><a class="menu__link menu__link--sublist menu__link--active" href="#">SpotifyAPI-NET</a><ul style="display:block;overflow:visible;height:auto" class="menu__list"><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/SpotifyAPI-NET/docs/introduction">Introduction</a></li><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/SpotifyAPI-NET/docs/getting_started">Getting Started</a></li><li class="menu__list-item"><a class="menu__link menu__link--sublist menu__link--active" href="#" tabindex="0">Guides</a><ul style="display:block;overflow:visible;height:auto" class="menu__list"><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/SpotifyAPI-NET/docs/error_handling">Error Handling</a></li><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/SpotifyAPI-NET/docs/configuration">Configuration</a></li><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/SpotifyAPI-NET/docs/logging">Logging</a></li><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/SpotifyAPI-NET/docs/proxy">Proxy</a></li><li class="menu__list-item"><a aria-current="page" class="menu__link menu__link--active active" tabindex="0" href="/SpotifyAPI-NET/docs/pagination">Pagination</a></li><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/SpotifyAPI-NET/docs/retry_handling">Retry Handling</a></li><li class="menu__list-item"><a class="menu__link" tabindex="0" href="/SpotifyAPI-NET/docs/iplayableitem">I
</span></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">// allPages will include the first page retrived before</span></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">var allPages = await spotify.PaginateAll(page);</span></span></code></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_Ue-o clean-btn">Copy</button></div></div><h2><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_2LWZ" id="paginate"></a>Paginate<a class="hash-link" href="#paginate" title="Direct link to heading">#</a></h2><div class="admonition admonition-info alert alert--info"><div class="admonition-heading"><h5><span class="admonition-icon"><svg xmlns="http://www.w3.org/2000/svg" width="14" height="16" viewBox="0 0 14 16"><path fill-rule="evenodd" d="M7 2.3c3.14 0 5.7 2.56 5.7 5.7s-2.56 5.7-5.7 5.7A5.71 5.71 0 0 1 1.3 8c0-3.14 2.56-5.7 5.7-5.7zM7 1C3.14 1 0 4.14 0 8s3.14 7 7 7 7-3.14 7-7-3.14-7-7-7zm1 3H6v5h2V4zm0 6H6v2h2v-2z"></path></svg></span>.NET Standard &gt;= 2.1 required</h5></div><div class="admonition-content"></div></div><p><code>Paginate</code> is based on <code>IAsyncEnumerable</code> and streams pages instead of returning them all in one list. This allows it to break the fetching early and keep only 1 page in memory at a time. This method should always be preferred to <code>PaginateAll</code>.</p><div class="codeBlockContainer_K1bP"><div class="codeBlockContent_hGly csharp"><pre tabindex="0" class="prism-code language-csharp codeBlock_23N8 thin-scrollbar" style="color:#bfc7d5;background-color:#292d3e"><code class="codeBlockLines_39YC"><span class="token-line" style="color:#bfc7d5"><span class="token plain">// we need the first page</span></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">var page = await spotify.Playlists.CurrentUsers();</span></span><span class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block">
</span></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">await foreach(var item in spotify.Paginate(page))</span></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">{</span></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> Console.WriteLine(item.Name);</span></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> // you can use &quot;break&quot; here!</span></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">}</span></span></code></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_Ue-o clean-btn">Copy</button></div></div><p>Some endpoints have nested and/or multiple paginations objects. When requesting the next page, it will not return the actual paging object but rather the root level endpoint object. A good example is the <code>Search</code> endpoint, which contains up to 5 Paging objects. Requesting the next page of the nested <code>Artists</code> paging object will return another <code>Search</code> response, instead of just <code>Artists</code>. You will need to supply a mapper function to the <code>Paginate</code> call, which returns the correct paging object:</p><div class="codeBlockContainer_K1bP"><div class="codeBlockContent_hGly csharp"><pre tabindex="0" class="prism-code language-csharp codeBlock_23N8 thin-scrollbar" style="color:#bfc7d5;background-color:#292d3e"><code class="codeBlockLines_39YC"><span class="token-line" style="color:#bfc7d5"><span class="token plain">var search = await spotify.Search.Item(new SearchRequest(</span></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> SearchRequest.Types.All, &quot;Jake&quot;</span></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">));</span></span><span class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block">
</span></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">await foreach(var item in spotify.Paginate(search.Albums, (s) =&gt; s.Albums))</span></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">{</span></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> Console.WriteLine(item.Name);</span></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> // you can use &quot;break&quot; here!</span></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">}</span></span></code></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_Ue-o clean-btn">Copy</button></div></div><h2><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_2LWZ" id="paginators"></a>Paginators<a class="hash-link" href="#paginators" title="Direct link to heading">#</a></h2><p>Via the interface <a href="https://github.com/JohnnyCrazy/SpotifyAPI-NET/blob/master/SpotifyAPI.Web/Clients/Interfaces/IPaginator.cs" target="_blank" rel="noopener noreferrer"><code>IPaginator</code></a>, it can be configured how pages are fetched. It can be configured on a global level:</p><div class="codeBlockContainer_K1bP"><div class="codeBlockContent_hGly csharp"><pre tabindex="0" class="prism-code language-csharp codeBlock_23N8 thin-scrollbar" style="color:#bfc7d5;background-color:#292d3e"><code class="codeBlockLines_39YC"><span class="token-line" style="color:#bfc7d5"><span class="token plain">var config = SpotifyClientConfig</span></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> .CreateDefault()</span></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> .WithPaginator(new YourCustomPaginator());</span></span></code></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_Ue-o clean-btn">Copy</button></div></div><p>or on method level:</p><div class="codeBlockContainer_K1bP"><div class="codeBlockContent_hGly csharp"><pre tabindex="0" class="prism-code language-csharp codeBlock_23N8 thin-scrollbar" style="color:#bfc7d5;background-color:#292d3e"><code class="codeBlockLines_39YC"><span class="token-line" style="color:#bfc7d5"><span class="token plain">await foreach(var item in spotify.Paginate(page, new YourCustomPaginator()))</span></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">{</span></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> Console.WriteLine(item.Name);</span></span><span class="token-line" style="color:#bfc7d5"><span class="token plain"> // you can use &quot;break&quot; here!</span></span><span class="token-line" style="color:#bfc7d5"><span class="token plain">}</span></span></code></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_Ue-o clean-btn">Copy</button></div></div><p>By default, <a href="https://github.com/JohnnyCrazy/SpotifyAPI-NET/blob/master/SpotifyAPI.Web/Clients/SimplePaginator.cs" target="_blank" rel="noopener noreferrer"><code>SimplePaginator</code></a> is used. It fetches pages without any delay.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><a href="https://github.com/JohnnyCrazy/SpotifyAPI-NET/edit/master/SpotifyAPI.Docs/docs/pagination.md" target="_blank" rel="noreferrer noopener"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_2_ui" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div><div class="col lastUpdated_3DPF">Last updated on <b><time datetime="2022-03-19T21:19:24.000Z">3/19/2022</time></b> by <b>dependabot[bot]</b></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Docs pages navigation"><div class="pagination-nav__item"><a class="pagination-nav__link" href="/SpotifyAPI-NET/docs/proxy"><div class="pagination-nav__sublabel">Previous</div><div class="pagina
<script src="/SpotifyAPI-NET/assets/js/runtime~main.40ab63fe.js"></script>
<script src="/SpotifyAPI-NET/assets/js/main.29a3befa.js"></script>
</body>
</html>