Add feeds per category

Classes/Frontend/RssFeed/SitemapDataProvider.php

@@ -0,0 +1,99 @@
+<?php
+
+namespace DanielSiepmann\DsSite\Frontend\RssFeed;
+
+
+/*
+ * Copyright (C) 2021 Daniel Siepmann <coding@daniel-siepmann.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+use Psr\Http\Message\ServerRequestInterface;
+use TYPO3\CMS\Core\Database\Connection;
+use TYPO3\CMS\Core\Database\ConnectionPool;
+use TYPO3\CMS\Core\Database\Query\QueryBuilder;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Frontend\ContentObject\ContentObjectRenderer;
+use TYPO3\CMS\Seo\XmlSitemap\RecordsXmlSitemapDataProvider;
+
+/**
+ * Provides dynamic for additionalWhere,
+ * to only list pages for current requested category.
+ */
+class SitemapDataProvider extends RecordsXmlSitemapDataProvider
+{
+    public function __construct(
+        ServerRequestInterface $request,
+        string $key,
+        array $config = [],
+        ContentObjectRenderer $cObj = null
+    ) {
+        $categoryUid = intval($request->getQueryParams()['category'] ?? 0);
+        if ($categoryUid > 0) {
+            $pageUids = $this->getPageUidsWithRelationToCategory($categoryUid);
+            $config['additionalWhere'] = ($config['additionalWhere'] ?? '')
+                . $this->createAdditionalWhereForPageUids($pageUids)
+                ;
+        }
+
+        parent::__construct($request, $key, $config, $cObj);
+    }
+
+    private function getPageUidsWithRelationToCategory(int $categoryUid): array
+    {
+        $queryBuilder = GeneralUtility::makeInstance(ConnectionPool::class)
+            ->getQueryBuilderForTable('pages');
+        /* @var QueryBuilder $queryBuilder */
+
+        $queryBuilder->select('uid');
+        $queryBuilder->from('pages');
+        $queryBuilder->leftJoin(
+            'pages',
+            'sys_category_record_mm',
+            'mm',
+            'pages.uid = mm.uid_foreign'
+        );
+        $queryBuilder->where(
+            $queryBuilder->expr()->eq(
+                'mm.tablenames',
+                $queryBuilder->createNamedParameter('pages')
+            ),
+            $queryBuilder->expr()->eq(
+                'mm.fieldname',
+                $queryBuilder->createNamedParameter('categories')
+            ),
+            $queryBuilder->expr()->in(
+                'mm.uid_local',
+                $queryBuilder->createNamedParameter($categoryUid)
+            )
+        );
+
+        $result = $queryBuilder->execute()->fetchAll();
+        if ($result === false) {
+            return [];
+        }
+
+        return array_map(function (array $row) {
+            return (int) $row['uid'];
+        }, $result);
+    }
+
+    private function createAdditionalWhereForPageUids(array $pageUids): string
+    {
+        return ' AND uid IN(' . implode(',', $pageUids) . ')';
+    }
+}

Classes/Frontend/RssFeed/XmlSitemapRenderer.php

@@ -0,0 +1,50 @@
+<?php
+
+namespace DanielSiepmann\DsSite\Frontend\RssFeed;
+
+/*
+ * Copyright (C) 2021 Daniel Siepmann <coding@daniel-siepmann.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+use TYPO3\CMS\Frontend\ContentObject\ContentObjectRenderer;
+use TYPO3\CMS\Seo\XmlSitemap\XmlSitemapRenderer as Typo3XmlSitemapRenderer;
+
+class XmlSitemapRenderer extends Typo3XmlSitemapRenderer
+{
+    /**
+     * @var ContentObjectRenderer
+     */
+    public $cObj;
+
+    public function render(string $_, array $typoScriptConfiguration): string
+    {
+        $settings = [];
+        foreach (array_keys($typoScriptConfiguration['userFunc.']['variables.'] ?? []) as $variableName) {
+            if (substr($variableName, -1) === '.') {
+                continue;
+            }
+            $settings[$variableName] = $this->cObj->cObjGetSingle(
+                $typoScriptConfiguration['userFunc.']['variables.'][$variableName] ?? '',
+                $typoScriptConfiguration['userFunc.']['variables.'][$variableName . '.'] ?? []
+            );
+        }
+        $this->view->assign('settings', $settings);
+
+        return parent::render($_, $typoScriptConfiguration);
+    }
+}

Configuration/Services.yaml

@@ -30,7 +30,7 @@ services:
       $view: '@dashboard.views.widget'
       $cache: '@cache.dashboard.rss'
       $options:
-        feedUrl: 'https://daniel-siepmann.de/feed/rssFeedAllBlogPosts/sitemap.xml'
+        feedUrl: 'https://daniel-siepmann.de/rss-feed/blog-posts.xml'
         limit: 3
     tags:
       - name: dashboard.widget

Configuration/TypoScript/Setup/RssFeed.typoscript

@@ -7,8 +7,8 @@ plugin.tx_seo {
     config {
         xmlSitemap {
             sitemaps {
-                rssFeedAllBlogPosts {
+                blog-posts {
-                    provider = TYPO3\CMS\Seo\XmlSitemap\RecordsXmlSitemapDataProvider
+                    provider = DanielSiepmann\DsSite\Frontend\RssFeed\SitemapDataProvider
                     config {
                         table = pages
                         sortField = lastUpdated
@@ -31,9 +31,57 @@ page {
             wrap = <link rel="alternate" title="RSS Feed of all blog posts" type="application/rss+xml" href="|" />
             typolink {
                 parameter = t3://page?uid=1
-                additionalParams = &type=1533906435&sitemap=rssFeedAllBlogPosts
+                additionalParams = &type=1533906435&sitemap=blog-posts
+                returnLast = url
+            }
+        }
+        11 = COA
+        11 {
+            if {
+                isTrue.stdWrap.data = GP:topic_id
+            }
+            1 = TEXT
+            1.char = 10
+            2 = TEXT
+            2 {
+                noTrimWrap = |<link rel="alternate" title="RSS Feed of blog posts for topic: |" type="application/rss+xml"|
+                data.dataWrap = DB : sys_category:{GP:topic_id}:title
+            }
+            3 = TEXT
+            3.char = 32
+            4 = TEXT
+            4 {
+                wrap = href="|" />
+                typolink {
+                    parameter = t3://page?uid=1
+                    additionalParams.stdWrap.cObject = COA
+                    additionalParams.stdWrap.cObject {
+                        10 = TEXT
+                        10.value = &type=1533906435&sitemap=blog-posts
+                        11 = TEXT
+                        11.value = &category=
+                        12 = TEXT
+                        // uid is casted to int within PHP source
+                        12.data.dataWrap = DB : sys_category:{GP:topic_id}:uid
+                    }
                     returnLast = url
                 }
             }
         }
+    }
+}
+
+seo_sitemap {
+    10 {
+        userFunc = DanielSiepmann\DsSite\Frontend\RssFeed\XmlSitemapRenderer->render
+        userFunc {
+            variables {
+                categoryId = TEXT
+                categoryId.data = GP:category
+                categoryId.intval = 1
+                categoryTitle = TEXT
+                categoryTitle.data.dataWrap = DB : sys_category:{GP:category}:title
+            }
+        }
+    }
 }

Resources/Private/Partials/Page/FooterMenu.html

@@ -1,7 +1,7 @@
 <html xmlns:f="http://typo3.org/ns/TYPO3/CMS/Fluid/ViewHelpers"
     data-namespace-typo3-fluid="true">
     <nav>
-        <a rel="alternate" title="RSS Feed of all blog posts" type="application/rss+xml" href="{f:uri.page(pageUid: 1, pageType: 1533906435, additionalParams: {sitemap: 'rssFeedAllBlogPosts'})}">RSS Feed</a>
+        <a rel="alternate" title="RSS Feed of all blog posts" type="application/rss+xml" href="{f:uri.page(pageUid: 1, pageType: 1533906435, additionalParams: {sitemap: 'blog-posts'})}">RSS Feed</a>
         <a rel="me" href="https://fosstodon.org/@daniels">at Mastodon</a>
         <a href="https://gitea.daniel-siepmann.de/danielsiepmann">My Gitea</a>
         <f:for each="{pages}" as="page">

Resources/Private/Templates/Sitemaps/RssFeed.xml

@@ -1,10 +1,20 @@
 <?xml version="1.0" encoding="UTF-8" ?>
 <rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom">
     <channel>
-        <title>Daniel Siepmann - Coding is Art</title>
+        <f:if condition="{settings.categoryId}">
+            <f:then>
+                <title>Daniel Siepmann - Coding is Art - Blog Posts {settings.categoryTitle}</title>
+                <description>List of {settings.categoryTitle} blog posts at daniel-siepmann.de</description>
+                <link>{f:uri.page(pageUid: 11, additionalParams: {topic_id: settings.categoryId}, absolute: 1)}</link>
+                <atom:link href="{f:uri.page(pageUid: 1. pageType: 1533906435, additionalParams: {sitemap: 'blog-posts', category: settings.categoryId}, absolute: 1)}" rel="self" type="application/rss+xml" />
+            </f:then>
+            <f:else>
+                <title>Daniel Siepmann - Coding is Art - All Blog Posts</title>
                 <description>List of blog posts at daniel-siepmann.de</description>
                 <link>{f:uri.page(pageUid: 1, absolute: 1)}</link>
-        <atom:link href="{f:uri.page(pageUid: 1. pageType: 1533906435, additionalParams: {sitemap: 'rssFeedAllBlogPosts'}, absolute: 1)}" rel="self" type="application/rss+xml" />
+                <atom:link href="{f:uri.page(pageUid: 1. pageType: 1533906435, additionalParams: {sitemap: 'blog-posts'}, absolute: 1)}" rel="self" type="application/rss+xml" />
+            </f:else>
+        </f:if>
         <lastBuildDate>{f:format.date(date: 'now', format: 'D, d M Y H:i:s O')}</lastBuildDate>
         <ttl>1800</ttl>