增加RSS订阅

app/common/tools/Rss.php

@@ -2,6 +2,7 @@
 namespace app\common\tools;
 
 use FeedWriter\RSS1;
+use FeedWriter\RSS2;
 
 class Rss
 {
@@ -18,7 +19,7 @@ class Rss
         $feed->setChannelAbout(Site::keywords());
 
         // An image is optional.
-        $feed->setImage(Site::logo(), 'PHP武器库头像', get_source_link('/'));
+        $feed->setImage(Site::logo(), Site::name() . '头像', get_source_link('/'));
 
         //Adding a feed. Generally this portion will be in a loop and add all feeds.
 
@@ -45,4 +46,82 @@ class Rss
 
         return $content;
     }
+
+    public static function initRss2()
+    {
+
+        // Creating an instance of RSS2 class.
+        $feed = new RSS2();
+
+        // Setting some basic channel elements. These three elements are mandatory.
+        $feed->setTitle(Site::name());
+
+        $feed->setLink(Site::indexUrl());
+
+        $feed->setDescription(Site::desc());
+
+
+        // Image title and link must match with the 'title' and 'link' channel elements for RSS 2.0,
+// which were set above.
+        $feed->setImage(Site::logo(), Site::name() . '头像', Site::indexUrl());
+
+        // Use the setChannelElement() function for other optional channel elements.
+// See http://www.rssboard.org/rss-specification#optionalChannelElements
+// for other optional channel elements. Here the language code for American English is used for the
+// optional "language" channel element.
+        $feed->setChannelElement('language', 'zh-cn');
+
+        $list_post = Site::mapRecentlyPost();
+
+        // The date when this feed was lastly updated. The publication date is also set.
+        $feed->setDate($list_post[0]->publish_time);
+
+        $feed->setChannelElement('pubDate', $list_post[0]->publish_time);
+
+
+
+        // If you want you can also add a line to publicly announce that you used
+// this fine piece of software to generate the feed. ;-)
+        $feed->addGenerator();
+
+        // Here we are done setting up the feed. What's next is adding some feed items.
+
+        foreach ($list_post as $model_post) {
+            # code...
+            $new_item = $feed->createNewItem();
+
+            // Add basic elements to the feed item
+            // These are again mandatory for a valid feed.
+            $new_item->setTitle($model_post->title);
+
+            $new_item->setLink($model_post->read_url);
+
+            $new_item->setDescription($model_post->desc);
+
+
+            // The following method calls add some optional elements to the feed item.
+
+            // Let's set the publication date of this item. You could also use a UNIX timestamp or
+            // an instance of PHP's DateTime class.
+            $new_item->setDate($model_post->publish_time);
+
+            // If you want you can set the name (and email address) of the author of this feed item.
+            $new_item->setAuthor($model_post->author_name, $model_post->stie_contact_email);
+
+            // You can set a globally unique identifier. This can be a URL or any other string.
+            // If you set permaLink to true, the identifier must be an URL. The default of the
+            // permaLink parameter is false.
+            $new_item->setId($model_post->read_url, true);
+
+            // Now add the feed item to the main feed.
+            $feed->addItem($new_item);
+        }
+
+
+        // OK. Everything is done. Now generate the feed.
+        // Then do anything (e,g cache, save, attach, print) you want with the feed in $myFeed.
+        $content = $feed->generateFeed();
+
+        return $content;
+    }
 }

route/app.php

@@ -68,3 +68,29 @@ Route::rule('/rss1.xml', function (Request $request) {
 
     return xml($content)->eTag($last_etag);
 });
+
+Route::rule('/rss2.xml', function (Request $request) {
+
+    $cache_key = 'rss2_cache_key';
+
+    $last_etag = Cache::get($cache_key);
+
+    if (!empty($cache_key)) {
+
+        $if_not_match = $request->header('If-None-Match');
+
+        if (!empty($if_not_match)) {
+            if ($if_not_match == $last_etag) {
+                return xml('', 304)->eTag($last_etag);
+            }
+        }
+    }
+
+    $content = Rss::initRss2();
+
+    $last_etag = md5($content);
+
+    Cache::set($cache_key, $last_etag);
+
+    return xml($content)->eTag($last_etag);
+});