Custom delete / remove message

The three button types that Editor adds to DataTables (create, edit and remove) each have the option of being able to show a custom message in the Editor form when activated through their formMessage option (which in turn is passed to the message() method).

This ability can be particularly useful for the remove button, allowing a message to be shown which included details for the rows that are to be deleted, ensuring the the end user is aware of what records will be deleted.

In this case the modifier() method is used to get the rows that will be deleted and rows().data() to get the data for these rows. Finally pluck() is used to gather a single data point from each row, although this could potentially be made much more complex if you require.

Name Position Office Extn. Start date Salary
Name Position Office Extn. Start date Salary
  • Javascript
  • HTML
  • CSS
  • Ajax
  • Server-side script
  • Comments

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/staff.php", table: "#example", fields: [ { label: "First name:", name: "first_name" }, { label: "Last name:", name: "last_name" }, { label: "Position:", name: "position" }, { label: "Office:", name: "office" }, { label: "Extension:", name: "extn" }, { label: "Start date:", name: "start_date", type: "datetime" }, { label: "Salary:", name: "salary" } ] } ); var table = $('#example').DataTable( { dom: "Bfrtip", ajax: "../php/staff.php", columns: [ { data: null, render: function ( data, type, row ) { // Combine the first and last names into a single table field return data.first_name+' '+data.last_name; } }, { data: "position" }, { data: "office" }, { data: "extn" }, { data: "start_date" }, { data: "salary", render: $.fn.dataTable.render.number( ',', '.', 0, '$' ) } ], select: true, buttons: [ { extend: "create", editor: editor }, { extend: "edit", editor: editor }, { extend: "remove", editor: editor, formMessage: function ( e, dt ) { var rows = dt.rows( e.modifier() ).data().pluck('first_name'); return 'Are you sure you want to delete the entries for the '+ 'following record(s)? <ul><li>'+rows.join('</li><li>')+'</li></ul>'; } } ] } ); } );

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

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:

div.DTE_Form_Info { text-align: left; }

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

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.

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