placeholder table action buttons

app/Http/Controllers/TableController.php

@@ -22,9 +22,10 @@ class TableController extends Controller
         /** @var Table $tableModel */
         $tableModel = $user->tables()->where('name', $table)->first();
 
+        // make it possible to show other revisions
         if ($input->has('rev')) {
             $rev = (int)$input->rev;
-            $revision = $tableModel->revisions()->orderBy('created_at')->skip($rev)->first();
+            $revision = $tableModel->revisions()->orderBy('created_at')->skip($rev - 1)->first();
             if ($revision === null) abort(404, "No such revision");
         } else {
             $revision = $tableModel->revision;

app/Models/User.php

@@ -177,4 +177,9 @@ class User extends Authenticatable
 
         return parent::__get($name);
     }
+
+    public function ownsTable(Table $table)
+    {
+        return $table->owner_id == $this->id;
+    }
 }

app/Providers/AppServiceProvider.php

@@ -49,11 +49,20 @@ class AppServiceProvider extends ServiceProvider
                 $classes = trim($classes);
                 $title = trim($title);
 
+                $notooltip = false;
+
+                if (strpos($title, 'sr:') === 0) {
+                    $notooltip = true;
+                    $title = substr($title, 3);
+                }
+
                 $sr = str_replace('~', ' ', e($title));
-                $tit = str_replace('~', '', e(trim($title, ' \r\n\t:,')));
+                $tit = str_replace('~', '', e(trim($title, " \r\n\t:,")));
 
                 return '<span class="sr-only">' . $sr . '</span>' .
-                    '<i class="' . e($classes) . '" title="' . $tit . '" aria-hidden=true></i>';
+                    '<i class="' . e($classes) . '" '.
+                    ($notooltip ? '' : 'title="' . $tit . '"') .
+                    ' aria-hidden=true></i>';
             } else {
                 return '<i class="' . e(trim($arg)) . '" aria-hidden=true></i>';
             }