问题
Hi i am a newbie to DataTables .... i have a data table in which i would like to add rows (one at a time) and have the capability of a multirow delete. I have managed to get the normal functionality working but the problem is that when i delete a row/rows and then try to add a new row the deleted rows appear back in the same positions as selected rows .... below is the code i am using to initialize the DataTable and the functionality to add and delete rows in my DataTable.... Any help would be appreciated ...
$(document).ready(function (){
var counter = 1
$('#addRow').on( 'click', function (a,b,c,d,e,f) {
a = "test"
t.row.add( [
counter +a,
counter +'test',
counter +'test',
counter +'test',
counter +'test',
counter +'test'
] ).draw(false);
counter ++;
} );
$('#example tbody').on( 'click', 'tr', function (e) {
if ( $(this).hasClass('selected') ) {
$(this).removeClass('selected');
$(this).css('background-color', '')
}
else {
t.$('tr.selected');//.removeClass('selected');
$(this).addClass('selected');
$(this).css('background-color', 'blue');
}
} );
$('#removeRow').click( function () {
var anSelected = fnGetSelected( t );
$(anSelected).remove();
} );
var t = $('#example').DataTable({
'fnCreatedRow': function (nRow, aData, iDataIndex) {
$(nRow).attr('id', 'my' + iDataIndex);
},
"aoColumnDefs": [ {
"aTargets": [0,1,2,3,4,5],
"fnCreatedCell": function (nTd, sData, oData, iRow, iCol) {
var idx = t.cell( nTd ).index().column;
var title = t.column( idx ).header();
$(nTd).attr("id",$(title).html() +"_"+ iRow)
}
} ]
});
});
function fnGetSelected( oTableLocal )
{
return oTableLocal.$('tr.selected');
}
The above code is just to test functionality with a few things not required....
**** Update on post **** The table html is written in a template which i am calling inside a form ... The parent gsp file with form code is below .....
Main gsp file
<g:form action="saveTravelDetails" id="createRequest" name="createRequest" autocomplete="off">
<g:render template="newTravelRequest" />
<div class="row">
<div class="col-md-12">
<div class="form-group" style="text-align: center;">
<input id="circuit_save" class="btn btn-primary circuit_validate" tabindex="700" class="button_text" type="submit" name="circuit_save" value="Save" />
<input id="circuit_cancel" class="btn btn-default" class="button_text" type="button" name="circuit_cancel" value="Cancel" />
<button type="button" class="btn btn-primary" data-toggle="modal" data-target="#detailsModal">Add new row</button>
<button type="button" class="btn btn-primary" id="removeRow">Remove Selected Row</button>
</div>
</div>
</div>
</g:form>
The template html code is below
<div class="row">
<div class="col-md-12">
<div class="panel panel-default">
<div class="panel-heading">
<i class="fa fa-user"></i> Travel Details
<div class="panel-tools">
<a href="#" class="btn btn-xs btn-link panel-collapse collapses">
</a>
</div>
</div>
<div class="panel-body">
<table cellpadding="0" cellspacing="0" border="0" class="display" id="example">
<thead class="alignCenter">
<tr>
<th class="headerclass">Departure Date</th>
<th class="headerclass">Return Date</th>
<th class="headerclass">Departure Destination</th>
<th class="headerclass">Arrival Destination</th>
<th class="headerclass">Choose Mode Of Transport</th>
<th class="headerclass">Cost of Travel</th>
</tr>
</thead>
<tbody></tbody>
<tfoot class="alignCenter headerclass">
<tr>
<th class="headerclass">Departure Date</th>
<th class="headerclass">Return Date</th>
<th class="headerclass">Departure Destination</th>
<th class="headerclass">Arrival Destination</th>
<th class="headerclass">Choose Mode Of Transport</th>
<th class="headerclass">Cost of Travel</th>
</tr>
</tfoot>
</table>
</div>
</div>
</div>
</div>
The updated javascript code in the main file which initializes the DataTable is given below ... this also has the function definition to Add and Delete rows
$(document).ready(function (){
var counter = 1
$('#addRow').on( 'click', function () {
t.row.add( [
$('#departureDate_1').val(),
$('#returnDate_1').val(),
$('#startDestination').val(),
$('#endDestination').val(),
$('#travelMode').val(),
$('#travelFare').val(),
] ).draw(false);
counter ++;
$('#detailsModal').modal('hide');
} );
$('#example tbody').on( 'click', 'tr', function (e) {
if ( $(this).hasClass('selected') ) {
$(this).removeClass('selected');
$(this).css('background-color', '')
}
else {
t.$('tr.selected');//.removeClass('selected');
$(this).addClass('selected');
$(this).css('background-color', 'blue');
}
} );
$('#removeRow').click( function () {
var anSelected = fnGetSelected( t );
$(anSelected).remove();
} );
var t = $('#example').DataTable({
'fnCreatedRow': function (nRow, aData, iDataIndex) {
$(nRow).attr('id', 'my' + iDataIndex);
$(nRow).attr('name', 'my' + iDataIndex); // or whatever you choose to set as the id
},
"aoColumnDefs": [ {
"aTargets": [0,1,2,3,4,5],
"fnCreatedCell": function (nTd, sData, oData, iRow, iCol) {
var idx = t.cell( nTd ).index().column;
var title = t.column( idx ).header();
$(nTd).attr("name",$(title).html() +"_"+ iRow)
$(nTd).attr("id",$(title).html() +"_"+ iRow)
}
} ]
});
$('#departureDate').on('change',function (){
$('.bootstrap-datetimepicker-widget').css('display','none');
});
$('#returnDate').on('change',function (){
$('.bootstrap-datetimepicker-widget').css('display','none');
});
$('#departureDate').datetimepicker({
format: 'YYYY-MM-DD',
pick12HourFormat: false,
autoclose: true
});
$('#returnDate').datetimepicker({
format: 'YYYY-MM-DD',
pick12HourFormat: false,
autoclose: true
});
});
function fnGetSelected( oTableLocal )
{
return oTableLocal.$('tr.selected');
}
Thanks in advance
回答1:
Try
$(anSelected).remove().draw(false);
As it is now you only redraw the table after adding a new row. As stated by the draw() docs:
A draw is not performed automatically by most DataTables API actions to allow grouping of actions (for example adding multiple rows is more efficient if you group them.
A good option would be to draw after you bulk-removed the rows.
回答2:
thanks for reading my question and taking the time to answer it i found the solution ... Below is the code which can be used in other scenarios also ....
$('#removeRow').click(function() {
var anSelected = fnGetSelected(t);
alert(anSelected);
t.row(anSelected).remove().draw(false);
});
function fnGetSelected(oTableLocal) {
return oTableLocal.$('tr.selected');
}
来源：https://stackoverflow.com/questions/35813626/deleted-rows-appear-back-upon-adding-new-row-datatables