add option to upload file when creating a table

resources/views/table/create.blade.php

@@ -4,6 +4,7 @@
 
 @section('content')
   <form method="POST" action="{{route('table.storeNew')}}" class="row justify-content-center"
+        enctype="multipart/form-data"
         aria-label="New Table">
 
     @csrf
@@ -57,11 +58,15 @@
         </div>
       </div>
 
-      {!! Widget::textarea('data', 'Initial data')->value($exampleData)->height('12em')
-            ->help('
-              Initial table data in CSV format, columns corresponding to the
-              specification you entered above. This is optional; you can fill the table
-              later, e.g. by uploading a CSV file.') !!}
+      {!! Widget::par('
+        Initialize the table with pasted CSV lines or an uploaded CSV file,
+        using the column order you defined above. This is optional, you can always
+        fill or modify the table later.
+      ', 'text-muted') !!}
+
+      {!! Widget::textarea('data', 'CSV as text')->value($exampleData)->height('12em') !!}
+
+      {!! Widget::file('csv-file', 'CSV file')->accept("text/csv") !!}
 
       <div class="row form-group">
         <div class="col-md-7 offset-md-3">