# Editor example Row reordering

This example shows the RowReorder extension for DataTables being used with Editor. RowReorder provides the ability for end users to quickly and easily reorder items in the table by click and drag. The integration with Editor that it provides (`rowReorder.editor`) makes use of Editor's multi-row editing abilities to update all rows to take account of the row ordered data.

This can make for a really easy to use interface for end users where they have data that they can place into a custom order.

In this example a list of audio books is shown and the user has the ability to define their own reading order through RowReorder's drag and drop. To demonstrate, reorder the rows using the numbers shown in the Order column.

Note also that we have to take special consideration when inserting and removing rows. In this case events are used in the server-side libraries to perform the require data update based on the inserted /deleted rows, and the table is reloaded using `ajax.reload` when the `postCreate` and `postRemove` events occur.

Order | Title | Author | Duration
--- | --- | --- | ---
Order | Title | Author | Duration

- Javascript
- HTML
- CSS
- Ajax
- Server-side script

The Javascript shown below is used to initialise the table shown in this example:

`var editor; // use a global for the submit and return data rendering in the examples $(document).ready(function() { editor = new $.fn.dataTable.Editor( { ajax: '../php/sequence.php', table: '#example', fields: [ { label: 'Order:', name: 'readingOrder', message: 'This field can only be edited via click and drag row reordering.' }, { label: 'Title:', name: 'title' }, { label: 'Author:', name: 'author' }, { label: 'Duration (minutes):', name: 'duration' } ] } ); var table = $('#example').DataTable( { dom: 'Bfrtip', ajax: '../php/sequence.php', columns: [ { data: 'readingOrder', className: 'reorder' }, { data: 'title' }, { data: 'author' }, { data: 'duration', render: function ( data, type, row ) { return parseInt(data/60, 10)+'h '+(data%60)+'m'; } } ], columnDefs: [ { orderable: false, targets: [ 1,2,3 ] } ], rowReorder: { dataSrc: 'readingOrder', editor: editor }, select: true, buttons: [ { extend: 'create', editor: editor }, { extend: 'edit', editor: editor }, { extend: 'remove', editor: editor } ] } ); editor .on( 'postCreate postRemove', function () { // After create or edit, a number of other rows might have been effected - // so we need to reload the table, keeping the paging in the current position table.ajax.reload( null, false ); } ) .on( 'initCreate', function () { // Enable order for create editor.field( 'readingOrder' ).enable(); } ) .on( 'initEdit', function () { // Disable for edit (re-ordering is performed by click and drag) editor.field( 'readingOrder' ).disable(); } ); } );`

In addition to the above code, the following Javascript library files are loaded for use in this example:

- //code.jquery.com/jquery-1.12.4.js
- https://cdn.datatables.net/1.10.16/js/jquery.dataTables.min.js
- https://cdn.datatables.net/buttons/1.5.0/js/dataTables.buttons.min.js
- https://cdn.datatables.net/select/1.2.4/js/dataTables.select.min.js
- https://cdn.datatables.net/rowreorder/1.2.3/js/dataTables.rowReorder.min.js
- ../../js/dataTables.editor.min.js

The HTML shown below is the raw HTML table element, before it has been enhanced by DataTables:

This example uses a little bit of additional CSS beyond what is loaded from the library files (below), in order to correctly display the table. The additional CSS used is shown below:

``

The following CSS library files are loaded for use in this example to provide the styling of the table:

- https://cdn.datatables.net/1.10.16/css/jquery.dataTables.min.css
- https://cdn.datatables.net/buttons/1.5.0/css/buttons.dataTables.min.css
- https://cdn.datatables.net/select/1.2.4/css/select.dataTables.min.css
- https://cdn.datatables.net/rowreorder/1.2.3/css/rowReorder.dataTables.min.css
- ../../css/editor.dataTables.min.css

This table loads data by Ajax. The latest data that has been loaded is shown below. This data will update automatically as any additional data is loaded.

The script used to perform the server-side processing for this table is shown below. Please note that this is just an example script using PHP. Server-side processing scripts can be written in any language, using the protocol described in the DataTables documentation.