improve collapser css

app/Http/Controllers/TableController.php

@@ -13,11 +13,22 @@ use MightyPork\Exceptions\NotApplicableException;
 
 class TableController extends Controller
 {
-    public function view(User $user, string $table)
+    public function view(Request $request, User $user, string $table)
     {
+        $input = $this->validate($request, [
+            'rev' => 'nullable|int'
+        ]);
+
         /** @var Table $tableModel */
         $tableModel = $user->tables()->where('name', $table)->first();
-        $revision = $tableModel->revision;
+
+        if ($input->has('rev')) {
+            $rev = (int)$input->rev;
+            $revision = $tableModel->revisions()->orderBy('created_at')->skip($rev)->first();
+            if ($revision === null) abort(404, "No such revision");
+        } else {
+            $revision = $tableModel->revision;
+        }
 
         return view('table.view', [
             'table' => $tableModel,
@@ -113,6 +124,7 @@ class TableController extends Controller
         $rowsData = null;
         try {
             $rowsData = array_map(function ($row) use ($columns) {
+                if (count($row) == 0 || count($row)==1&&$row[0]=='') return null;
                 if (count($row) != count($columns)) {
                     throw new NotApplicableException("All rows must have " . count($columns) . " fields.");
                 }
@@ -129,8 +141,10 @@ class TableController extends Controller
                     'data' => json_encode($parsed),
                 ];
             }, $rowTable);
+
+            $rowsData = array_filter($rowsData);
         } catch (\Exception $e) {
-            return $this->backWithErrors(['columns' => $e->getMessage()]);
+            return $this->backWithErrors(['data' => $e->getMessage()]);
         }
 
         $revisionFields = [