Added admin privilages

App/Models/Post.php

@@ -32,15 +32,24 @@ class Post extends \Core\Model
         );
     }
 
-    public function showAll()
+    public function showAll($conds = [])
     {
         try {
             $db = static::connectDB();
 
-            $sql = "SELECT * FROM pengumuman ORDER BY created_at";
+            $sql = "SELECT * FROM pengumuman";
+
+            if ($conds) {
+                $key = implode('', array_keys($conds));
+                $sql .= " WHERE {$key} = ?";
+            }
 
             $query = $db->prepare($sql);
 
+            if ($conds) {
+                $query->bindValue(1, implode('', array_values($conds)));
+            }
+
             if ($query->execute()) {
                 if ($query->rowCount() != 0) {
                     $result = $query->fetchAll(\PDO::FETCH_ASSOC);