Views with grouping fields have duplicate DOM IDs

Displaying a Weight field in a table view allows users to arrange the rows using Drupal's tableDrag JavaScript plugin. However, if the view is configured with a grouping field, the view is split into multiple tables, and the Weight module incorrectly gives each table the same DOM ID.

This causes at least two issues:

• The view's HTML no longer validates.
• When using jQuery 1.5+ via jQuery Update, only the first of the grouped tables will be made draggable.

The problem appears to be caused by weight_preprocess_views_view_table(), which uses the same DOM ID every time it is called.

The attached patch changes weight_preprocess_views_view_table() to append the view's "id" variable to each DOM ID, making them unique. With this patch in place, draggable table views work as expected even when jQuery Update is enabled.