Fix Posts suggestions, groups by Communities and Blog

app/Post.php

@@ -8,6 +8,7 @@ use Movim\Picture;
 use Movim\User;
 
 use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Capsule\Manager as DB;
 
 class Post extends Model
 {
@@ -66,17 +67,17 @@ class Post extends Model
 
     public function scopeRestrictToMicroblog($query)
     {
-        return $query->where('node', 'urn:xmpp:microblog:0');
+        return $query->where('posts.node', 'urn:xmpp:microblog:0');
     }
 
     public function scopeRestrictToCommunities($query)
     {
-        return $query->where('node', '!=', 'urn:xmpp:microblog:0');
+        return $query->where('posts.node', '!=', 'urn:xmpp:microblog:0');
     }
 
     public function scopeWithoutComments($query)
     {
-        return $query->whereNull('parent_id');
+        return $query->whereNull('posts.parent_id');
     }
 
     public function scopeRestrictUserHost($query)
@@ -103,9 +104,23 @@ class Post extends Model
         }
     }
 
+    public function scopeRecents($query)
+    {
+        $query->join(DB::raw('(
+            select max(published) as published, server, node
+            from posts
+            group by server, node) as recents
+            '), function($join)
+            {
+                $join->on('posts.node', '=', 'recents.node');
+                $join->on('posts.published', '=', 'recents.published');
+            }
+        );
+    }
+
     protected function withContactsScope($query)
     {
-        return $query->orWhereIn('server', function($query) {
+        return $query->orWhereIn('posts.server', function($query) {
             $query->from('rosters')
                   ->select('jid')
                   ->where('session_id', SESSION_ID)

app/widgets/Communities/Communities.php

@@ -25,7 +25,8 @@ class Communities extends \Movim\Widget\Base
         $posts = \App\Post::withoutComments()
             ->restrictToCommunities()
             ->restrictNSFW()
-            ->orderBy('published', 'desc')
+            ->recents()
+            ->orderBy('posts.published', 'desc')
             ->where('open', true)
             ->take(40)
             ->get();

app/widgets/ContactDiscoPosts/ContactDiscoPosts.php

@@ -24,8 +24,9 @@ class ContactDiscoPosts extends \Movim\Widget\Base
         $blogs = \App\Post::restrictToMicroblog()
                           ->restrictUserHost()
                           ->restrictNSFW()
+                          ->recents()
                           ->where('open', true)
-                          ->orderBy('published', 'desc')
+                          ->orderBy('posts.published', 'desc')
                           ->get();
         $view->assign('blogs', $blogs);
 

app/widgets/NewsNav/NewsNav.php

@@ -10,10 +10,11 @@ class NewsNav extends Base
     public function display()
     {
         $blogs = \App\Post::where('open', true)
-                          ->orderBy('published', 'desc')
+                          ->orderBy('posts.published', 'desc')
                           ->restrictToMicroblog()
                           ->restrictUserHost()
                           ->restrictNSFW()
+                          ->recents()
                           ->take(6)
                           ->get()
                           ->shuffle();
@@ -21,14 +22,15 @@ class NewsNav extends Base
         $this->view->assign('blogs', $blogs);
 
         $posts = \App\Post::where('open', true)
-                          ->orderBy('published', 'desc')
+                          ->orderBy('posts.published', 'desc')
                           ->restrictToCommunities()
                           ->restrictUserHost()
                           ->restrictNSFW()
+                          ->recents()
                           ->take(6);
 
         if ($this->get('s') && $this->get('s') != 'subscriptions') {
-            $posts->where('server', $this->get('s'));
+            $posts->where('posts.server', $this->get('s'));
         }
 
         $this->view->assign('posts', $posts->get()->shuffle());