How to render a column with jQuery dataTables - javascript

I am using jQuery dataTables to fetch data from the server.
here is my code:
<script type="text/javascript">
$(document).ready(function () {
$('#myDataTable').dataTable({
"bServerSide": true,
"sAjaxSource": "Device/AjaxHandler",
"bProcessing": true,
"aoColumns": [
{ "sName": "AccountCode" },
{ "sName": "User" },
{ "sName": "Signal Strength"
"render": renderSignal(data)
} ]
});
function renderSignal(val) {
return '<p>' + val + '</p>';
}
});
</script>
This doesn't work, but I have the feeling it is a syntax error.
Im not sure if render is the correct function name to use.
What I want to do, is take a value 1-3 and then display a different image for each value.
So I want to define that columns layout in my render function.

Related

Adding an element within a td in jQuery datatable

I have a js data table that I have implemented for pagination of data. It uses the jQuery data table. The data is being displayed correctly. However, I want to add an element within the first row of the data table.
Before I added it like this : <td>#Html.ActionLink(item.CarId, "Detail", "Cars", new { id = item.CarId},null)
<span class="dt-expand-btn js-expand-btn">+</span></td>
What I want to add within the td of the js is : <span class="dt-expand-btn js-expand-btn">+</span>
var carsDataTable = $('.js-cars-lists').DataTable({
"ajax": {
"url": "/Cars/CarsPagination",
"processing": true,
"serverSide": true,
"language": {
"paginate": {
"previous": '<i class="material-icons">chevron_left</i>',
"next": '<i class="material-icons">chevron_right</i>'
}
},
"order": [0, "asc"],
"type": "POST",
"datatype": "json"
},
"columns": [
{
"data": "CarId", "name": "CarId", "autowidth": true,
"render": function (data, type, row, meta) {
$(row.CarId).css('color', 'red');
return '' + row.CarId + '';
}
},
{ "data": "CarName", "name": "CarName", "autowidth": true },
Could someone please help me to achieve this ? Also, paginate icons are not appearing. Please help.
jQuery DataTable has a function of render it accepts 4 parameters function(data, type, row) which you can control the rendering of your rows. You can now check the rows of a table and add your element in it.
You can use columnDefs method and then render:
...
columnDefs: [{
"render": function(data, type) {
return '<span class="dt-expand-btn js-expand-btn">+</span>';
},
"targets": 0
}]
...
targets refers to the index of the table column (since you are referring to the 1st column) set it to 0

Send jquery datatable column value to Javascript Function (Asp.Net MVC)

I am binding data to jquery datatable in asp.net mvc, i have an anchor tag in one of the columns of the grid where i am accessing / reading row data and sending that data to a javascript function. The problem which i am facing is, i am able read and send row values to the function which are numbers for example ProductID="1" or CategoryID="3" , but if i try to send ProductName="Chai" to the javscript function i get an error in the console, and if i remove the parameter "ProductName" everything works fine and the javascript function also gets triggered.
Following the console error:
"Index:1 Uncaught ReferenceError: Chai is not defined
at HTMLAnchorElement.onclick (Index:1)"
Following is my Code:
var BindDataTable = function (response) {
$("#tbProduct").DataTable({
"aaData": response,
"aoColumns": [
{ "mData": "ProductID" },
{ "mData": "ProductName" },
{ "mData": "SupplierID" },
{ "mData": "SupplierName" },
{ "mData": "SupplierCountry" },
{ "mData": "CategoryID" },
{ "mData": "CategoryName" },
{ "mData": "QuantityPerUnit" },
{ "mData": "UnitPrice" },
{
"render": function (data, type, full, meta) {
return '<i class="glyphicon glyphicon-pencil"></i>'
}
}
],
"columnDefs": [
{
"targets": [2],
"visible": false,
"searchable": false
},
{
"targets": [5],
"visible": false,
"searchable": false
}
],
"aaSorting": []
});
}
var EditProduct = function (ProductID, SuppID, CatID,PrdName) {
var url = "/Product/EditProduct?ProductID=" + ProductID + "&SuppID=" + SuppID + "&CatID=" + CatID;
$("#myModalBodyDiv1").load(url, function () {
$("#myModal1").modal("show");
})
}
Error:
My suggestion is that instead of playing around with that much string concatenations, what you can do is pass single object to your function and then use the required fields which needs to be passed as ajax call:
"render": function (data, type, full, meta) {
return '<i class="glyphicon glyphicon-pencil"></i>'
}
and in your js function use it :
var EditProduct = function (product) {
var url = "/Product/EditProduct?ProductID=" + product.ProductID+ "&SuppID=" + product.SupplierID + "&CatID=" + productCategoryID + "&ProdName=" + product.Prooductname ;
You can use the following approach in for passing string arguments to a JavaScript function:
<a onclick="javaScriptFunction(#p.ID, '#p.FileName');">#p.FileName</a>
function javaScriptFunction(id, fileName) {
...
}

Make edit link on datatable with multiple column values and global search on single/custom column(s)

How to create an edit link with function having multiple parameter from the data columns returned from ajax.
I read about the render callback but it only gets one column value & I need 2.
I need something like the following pseudo code.
"columnDefs": [ {
"targets": [0,1],
"data": "0,1",
"render": function ( data, type, full, meta ) {
return ``
}
} ]
As I'm disabling global search on all column except one. I cannot use the above code that use targets property. I don't know how to achieve this, please guide.
Edit: Complete code
var datatable = $('#datatable').DataTable({
"ajax": "/get_data/",
"processing": true,
"serverSide": true,
"deferRender": true,
"columnDefs": [
{ "searchable": false, "targets": [ 0,2,3,4,5,6,7,8,9,10,11 ] }
]
});
You can access row data using full variable, for example full[0] or full[1].
However instead of generating links in HTML, I would retrieve row data in a click handler as shown below:
$('#example').DataTable({
"columnDefs": [
{
"targets": [0, 1],
"render": function ( data, type, full, meta ) {
return 'Edit';
}
}
],
// ... other options ...
});
$('#example').on('click', '.btn-edit', function(){
// Get row data
var data = $('#example').DataTable().row($(this).closest('tr')).data();
edit(data[0], data[1]);
});
I needed Edit link on first column, so I followed #Gyrocode.com answer and it works great.
I also wanted to use the global search for searching but only on one column. Datatable ColumnDef Documentation gave me the clue so I ended up doing as follows.
Here The complete code:
var datatable = $('#datatable').DataTable({
"ajax": "/get_data/",
"processing": true,
"serverSide": true,
"deferRender": true,
"columnDefs": [
{
"targets": 0,
"render": function ( data, type, full, meta ) {
return 'Edit';
}
},
{ targets: 1, searchable: true },
{ targets: '_all', searchable: false }
]
});

jQuery datatable - change cell value

I'm hoping someone can help me with this issue.
I am looking at a legacy application with the older version of datatables.net
It uses the function to populate the datatable and add colour to the row based on a returned name.
The code below works.
$(function () {
$("#ProfileTable").dataTable({
"bProcessing": true,
"bServerSide": true,
"bFilter": false, //Hide the search box
"bInfo": false,
"bPaginate": false,
"bLengthChange": false,
"sAjaxSource": 'DataTableHandler.ashx?dataTableId=ProfileTable',
"aoColumns": [ //aoColumns defines the properties of the table columns
{
"mDataProp": "Name",
"fnRender": function (o) {
return SetToolTip(o);
}
},
{
"mDataProp": "DollarValue",
"fnRender": function (o) {
return accounting.formatMoney(dollarValue);
}
,
"bUseRendered": false,
"sClass": "dataTableTextAlignRight"
}
],
"fnRowCallback": function (nRow, aData, iDisplayIndex, iDisplayIndexFull) {
//Highlight the row colors based on the Name. It must be identical to what is being retrieved from the database
var columnData = aData["Name"];
var div = document.createElement("div");
div.innerHTML = columnData;
if (div.innerText == "TOYS" {
$('td', nRow).css('background-color', '#E0E0E0');
}
if (div.innerText == "LOST TOYS" ) {
$('td', nRow).css('background-color', '#BDBDBD');
}
}
}
What i'm having trouble with is: If the Name = "LOST TOYS" and the DollarValue = 0 then change the DollarValue to display as an empty string (i.e. no value displayed in the cell).
I have looked at using fnUpdate but i can't get it to read the correct row and column. It comes back with "undefined".
Any suggestions are greatly appreciated.
thanks!
I had a brain fart.
The code goes to server side to get the data.
Here's the link to the information:Datatables forum posting about server side source

Datatables Jquery Ajax

I have an issue with the reinitialisation of my datatable. My code below works by pulling in a json from getOrderStatus.php and upon success of this puts all the json data into javascript variables and then from this i can set these variables to div tags and display the data i need on my webpage. However the Datatable cannot be reinititalised once the ajax loop runs and displays the following error message "DataTables warning: table id=mytable - Cannot reinitialise DataTable". I believe i need a way to kill the table and recreate it upon the ajax refresh however i cant seem to find a way to do this ?
$(document).ready(function ajaxLoop(){
$.ajax({
url: 'getOrderStatus.php', // Url of Php file to run sql
data: "",
dataType: 'json', //data format
success: function updateOrder(data) //on reciept of reply
{
var OrdersSubmitted = data.OrderStatus[0].SUBMITTED; //get Orders Submitted Count
var OrdersFulfilled = data.OrderStatus[0].FULFILLED; //get Orders Fulfilled count
var LastTransaction = data.LastTransaction[0]; //get Last Transaction
//--------------------------------------------------------------------
// 3) Update html content
//--------------------------------------------------------------------
$('#OrdersSubmitted').html(OrdersSubmitted);
$('#OrdersFulfilled').html(OrdersFulfilled); //Set output html divs
$('#mytable').dataTable({
"data": LastTransaction,
"aging": false,
"searching": false,
"columns": [
{ "title": "ORDER_ID" }, // <-- which values to use inside object
{ "title": "STATUS" },
{ "title": "ACC_NUMBER" },
{ "title": "SORT_CODE" }
]
});
setTimeout(ajaxLoop, 2000);
}
});
});
Did you try using "bDestroy": true.
$('#mytable').dataTable({
"data": LastTransaction,
"aging": false,
"searching": false,
"bDestroy": true,
"columns": [
{ "title": "ORDER_ID" }, // <-- which values to use inside object
{ "title": "STATUS" },
{ "title": "ACC_NUMBER" },
{ "title": "SORT_CODE" }
]
});
Another way is if you check if datatable is already init. on your table
var table = $('#mytable');
if ($.fn.DataTable.fnIsDataTable(table)) {
//It's already a datatable
//clear and destroy
table.dataTable().fnClearTable();
table.dataTable().fnDestroy();
}
**It seems your are using latest datatable version:**
then option should be destroy:true (aging should be changed to paging):
$('#mytable').dataTable({
"data": LastTransaction,
"paging": false,
"searching": false,
"destroy": true,
"columns": [
{ "title": "ORDER_ID" }, // <-- which values to use inside object
{ "title": "STATUS" },
{ "title": "ACC_NUMBER" },
{ "title": "SORT_CODE" }
]
});
and check on existing datatable would be:
if($.fn.DataTable.isDataTable("#myTable"))
{
$('#myTable').DataTable().clear().destroy();
}

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