How to export all rows from Datatables using Ajax?
According to DataTables documentation there is no way to export all rows when you are using server side:
Special note on server-side processing: When using DataTables in server-side processing mode (
serverSide) theselector-modifierhas very little effect on the rows selected since all processing (ordering, search etc) is performed at the server. Therefore, the only rows that exist on the client-side are those shown in the table at any one time, and the selector can only select those rows which are on the current page.
I worked this around by adding an 'ALL' parameter to the length menu and training end users to display all records before doing a PDF (or XLS) export:
var table = $('#example').DataTable({
serverSide: true,
ajax: "/your_ajax_url/",
lengthMenu: [[25, 100, -1], [25, 100, "All"]],
pageLength: 25,
buttons: [
{
extend: 'excel',
text: '<span class="fa fa-file-excel-o"></span> Excel Export',
exportOptions: {
modifier: {
search: 'applied',
order: 'applied'
}
}
}
],
// other options
});
You need to tell the AJAX function to get all data, then do the export but cancel the actual draw so that all of that data isn't loading into the DOM. The full data will still exist in memory for the DataTables API though, so you need to refresh it to the way it was before the export.
var oldExportAction = function (self, e, dt, button, config) {
if (button[0].className.indexOf('buttons-excel') >= 0) {
if ($.fn.dataTable.ext.buttons.excelHtml5.available(dt, config)) {
$.fn.dataTable.ext.buttons.excelHtml5.action.call(self, e, dt, button, config);
}
else {
$.fn.dataTable.ext.buttons.excelFlash.action.call(self, e, dt, button, config);
}
} else if (button[0].className.indexOf('buttons-print') >= 0) {
$.fn.dataTable.ext.buttons.print.action(e, dt, button, config);
}
};
var newExportAction = function (e, dt, button, config) {
var self = this;
var oldStart = dt.settings()[0]._iDisplayStart;
dt.one('preXhr', function (e, s, data) {
// Just this once, load all data from the server...
data.start = 0;
data.length = 2147483647;
dt.one('preDraw', function (e, settings) {
// Call the original action function
oldExportAction(self, e, dt, button, config);
dt.one('preXhr', function (e, s, data) {
// DataTables thinks the first item displayed is index 0, but we're not drawing that.
// Set the property to what it was before exporting.
settings._iDisplayStart = oldStart;
data.start = oldStart;
});
// Reload the grid with the original page. Otherwise, API functions like table.cell(this) don't work properly.
setTimeout(dt.ajax.reload, 0);
// Prevent rendering of the full data to the DOM
return false;
});
});
// Requery the server with the new one-time export settings
dt.ajax.reload();
};
and:
buttons: [
{
extend: 'excel',
action: newExportAction
},
Thanks a lot to the user "kevinpo". He has given the way how all records from jquery datatable to be downloaded as excel when server side processing is On. Based on his answer, here i have complete export functionality implemented (copy, excel, csv, pdf, print) for server side processing.
inside $(document).ready() define the below function & call this function on action of each export button like below :
/* For Export Buttons available inside jquery-datatable "server side processing" - Start
- due to "server side processing" jquery datatble doesn't support all data to be exported
- below function makes the datatable to export all records when "server side processing" is on */
function newexportaction(e, dt, button, config) {
var self = this;
var oldStart = dt.settings()[0]._iDisplayStart;
dt.one('preXhr', function (e, s, data) {
// Just this once, load all data from the server...
data.start = 0;
data.length = 2147483647;
dt.one('preDraw', function (e, settings) {
// Call the original action function
if (button[0].className.indexOf('buttons-copy') >= 0) {
$.fn.dataTable.ext.buttons.copyHtml5.action.call(self, e, dt, button, config);
} else if (button[0].className.indexOf('buttons-excel') >= 0) {
$.fn.dataTable.ext.buttons.excelHtml5.available(dt, config) ?
$.fn.dataTable.ext.buttons.excelHtml5.action.call(self, e, dt, button, config) :
$.fn.dataTable.ext.buttons.excelFlash.action.call(self, e, dt, button, config);
} else if (button[0].className.indexOf('buttons-csv') >= 0) {
$.fn.dataTable.ext.buttons.csvHtml5.available(dt, config) ?
$.fn.dataTable.ext.buttons.csvHtml5.action.call(self, e, dt, button, config) :
$.fn.dataTable.ext.buttons.csvFlash.action.call(self, e, dt, button, config);
} else if (button[0].className.indexOf('buttons-pdf') >= 0) {
$.fn.dataTable.ext.buttons.pdfHtml5.available(dt, config) ?
$.fn.dataTable.ext.buttons.pdfHtml5.action.call(self, e, dt, button, config) :
$.fn.dataTable.ext.buttons.pdfFlash.action.call(self, e, dt, button, config);
} else if (button[0].className.indexOf('buttons-print') >= 0) {
$.fn.dataTable.ext.buttons.print.action(e, dt, button, config);
}
dt.one('preXhr', function (e, s, data) {
// DataTables thinks the first item displayed is index 0, but we're not drawing that.
// Set the property to what it was before exporting.
settings._iDisplayStart = oldStart;
data.start = oldStart;
});
// Reload the grid with the original page. Otherwise, API functions like table.cell(this) don't work properly.
setTimeout(dt.ajax.reload, 0);
// Prevent rendering of the full data to the DOM
return false;
});
});
// Requery the server with the new one-time export settings
dt.ajax.reload();
};
//For Export Buttons available inside jquery-datatable "server side processing" - End
And for buttons, define like below
"buttons": [{
"extend": 'copy',
"text": '<i class="fa fa-files-o" style="color: green;"></i>',
"titleAttr": 'Copy',
"action": newexportaction
},
{
"extend": 'excel',
"text": '<i class="fa fa-file-excel-o" style="color: green;"></i>',
"titleAttr": 'Excel',
"action": newexportaction
},
{
"extend": 'csv',
"text": '<i class="fa fa-file-text-o" style="color: green;"></i>',
"titleAttr": 'CSV',
"action": newexportaction
},
{
"extend": 'pdf',
"text": '<i class="fa fa-file-pdf-o" style="color: green;"></i>',
"titleAttr": 'PDF',
"action": newexportaction
},
{
"extend": 'print',
"text": '<i class="fa fa-print" style="color: green;"></i>',
"titleAttr": 'Print',
"action": newexportaction
}],
That's it. Now your download is ready.