Changed the way same data checker works

App/Controllers/Posts.php

@@ -166,20 +166,24 @@ class Posts
     // Methods
     public function post($args = [])
     {
-        foreach ($args as $value) {
-            if ($value == '') {
-                Session::flash('info', 'All data must not be empty');
-                Redirect::to('/');
-                die();
-            }
-        }
-
         $table = 'pengumuman';
         if (isset($args['_addon'])) {
             $table = $args['_addon'];
             unset($args['_addon']);
         }
 
+        foreach ($args as $value) {
+            if ($value == '') {
+                Session::flash('info', 'All data must not be empty');
+                if ($table == 'pengumuman') {
+                    Redirect::to('/posts/entry');
+                } elseif ($table == 'kategori') {
+                    Redirect::to('/posts/category');
+                }
+                die();
+            }
+        }
+
         if ($this->post->entry($table, $args)) {
             Session::flash('info', 'Data successfuly uploaded');
 
@@ -200,11 +204,38 @@ class Posts
         $id = $args['id'];
         unset($args['id']);
 
+        // Check if data same with old data
+        $old_data = [
+            $args['old_category'],
+            $args['old_content'],
+            $args['old_valid_at'],
+            $args['old_expired_at']
+        ];
+        $new_data = [
+            $args['category'],
+            $args['content'],
+            $args['valid_at'],
+            $args['expired_at']
+        ];
+
+        if ($old_data == $new_data) {
+            Session::flash('info', 'Data must not be same');
+            Redirect::to("./$id");
+            die();
+        }
+
+        $keys = array_keys($args);
+        if ($matches = preg_grep('/^old_/', $keys)) {
+            foreach ($matches as $match) {
+                unset($args[$match]);
+            }
+        }
+
         if ($this->post->update($table, $args, $id)) {
             Session::flash('info', 'Data successfuly updated');
             Redirect::to('/');
         } else {
-            Session::flash('info', 'Error');
+            Session::flash('info', 'Data cannot be uploaded');
             Redirect::to("./$id");
         }
     }

App/Views/Data/edit_pengumuman.html

@@ -18,11 +18,13 @@
                 </option>
             {% endfor %}
         </select>
+        <input type="hidden" name="old_category" value="{{ post.category }}">
 
         <br>
 
         <label for="content">Konten: </label>
         <textarea name="content" rows="3" cols="30" maxlength="255">{{ post.content }}</textarea>
+        <input type="hidden" name="old_content" value="{{ post.content }}">
 
         <br>
 
@@ -42,11 +44,13 @@
 
         <label for="valid_at">Berlaku dari: </label>
         <input type="date" name="valid_at" value="{{ post.valid_at }}">
+        <input type="hidden" name="old_valid_at" value="{{ post.valid_at }}">
 
         <br>
 
         <label for="expired_at">Berlaku sampai: </label>
         <input type="date" name="expired_at" value="{{ post.expired_at }}">
+        <input type="hidden" name="old_expired_at" value="{{ post.expired_at }}">
 
         <br>