Row grouping on rendered column

Rawland_Hustle · December 2021

Hi!

I'm using rendered data for a column and I want to group the rows based on it. Is that possible?

Thanks!

columns: [
{data: "namespace",
render: function ( data, type, row, meta ) {
split_array = data.split(':')
ans = split_array.splice(-2).join(':')
cut_off_part = split_array.join(':')
return cut_off_part;
}
},
.......
]

kthorngren · December 2021

There is a comment at the bottom of the rowGroup.dataSrc that shows using a function. You can use a function similar to what you have in columns.render to create the rowGroups. Make sure you are sorting by this column.

Kevin

Rawland_Hustle · December 2021

Worked like a charm! Thank you very much!

Rawland_Hustle · December 2021

Acually, I can't get the sorting to work. How would I set the sorting in this case?

kthorngren · December 2021

Use the order option to set the default table order. If you still need help please provide a simple test case with an example of your data showing the issues you are having.
https://datatables.net/manual/tech-notes/10#How-to-provide-a-test-case

I built this simple example of manipulating the Position string with rowGroup and sorting.
http://live.datatables.net/yoyicasu/1/edit

Kevin

Rawland_Hustle · December 2021

The order option does not work. See link below. Click a row in the first table to load the second table, where the grouping/sorting is.

http://themeadow.se/takdata/

Here's the function that creates the second table:

serviceContractsTable = $('#serviceContractsTable').DataTable( {
        data: data,
        dataSrc: "",
        order: [4, 'asc'],
        columns: [
                { data: "id"},
                {
                    data: "namespace",
                    render: function ( data, type, row, meta ) {

                        split_array = data.split(':')
                        ans = split_array.splice(-2).join(':')

                        var trimmeddata = ans.substring(0, ans.length - 11);
                        return trimmeddata;
                    }
                },
                { data: "major" },
                { data: "minor" },
                { data: null, visible: false},
                {
                    data: "name",
                    render: function(data, type, row, meta) {

                        return '<i class="fas fa-info-circle" style="color: Dodgerblue;" data-bs-toggle="popover" data-bs-placement="top" title="About" data-bs-content="' + data + '"></i>';

                    }
                }

        ],
        select: {
            style: "single",
            selector: "td:not(:last-child)"
            },
        pageLength: 25,
        rowGroup: {
            dataSrc: function(row) {
                data = row.namespace;
                split_array = data.split(':');
                ans = split_array.splice(-2).join(':');

                cut_off_part = split_array.join(':');

                return cut_off_part;
            }
        }

kthorngren · December 2021

The page doesn't completely load for me:

You have order: [4, 'asc'],. The order docs show that an array of arrays is required. You will need order: [ [4, 'asc'] ],. Column 4 is { data: null, visible: false}, which doesn't have any data to sort. You will need to sort by the rowGroup.dataSrc column which is namespace. Try order: [ [1, 'asc'] ],.

Kevin

Rawland_Hustle · December 2021

What does dev tools tell you about the problem with connectionPoints?

I actually "fixed" the array of arrays before posting the code here because I thought it was a typo on my part. Turns out it actually was supposed to be an array of array so I've changed back.

order: [ [1, 'asc'] ] sorts the table on name so that did not help.

kthorngren · December 2021

There is no error. It times out the XHR request.

Ca you build a simple test case with an example of your data so we can see how columns.render is affecting the sorting of the namespace column?
https://datatables.net/manual/tech-notes/10#How-to-provide-a-test-case

Kevin

Rawland_Hustle · December 2021

What happens if you try to open the following url in your browser? Maybe the API has blocked traffic from international clients.

http://api.ntjp.se/coop/api/v1/connectionPoints

I'm afraid I can't build a test case because the API is served on http, not https. JSFiddle and similar services are using https.

kthorngren · December 2021

The api link doesn't seem to work either.

Use the browser's network inspector to get a sample of the json data. Load it using a Javascript data source like this example. Provide your columns.render code. This way we can see the original data and help determine why its not sorting.

Kevin

Rawland_Hustle · December 2021

Before I do that, is it possible to create the row grouping in any other way than this? Maybe I can change the way I'm doing the row grouping.

function processServiceContracts(data) {

    $("#serviceContractsWrapper").show();

    serviceContractsTable = $('#serviceContractsTable').DataTable( {
        data: data,
        dataSrc: "",
        order: [[4, 'asc']],
        columns: [
                { data: "id"},
                {
                    data: "namespace",
                    render: function ( data, type, row, meta ) {

                        split_array = data.split(':')
                        ans = split_array.splice(-2).join(':')

                        var trimmeddata = ans.substring(0, ans.length - 11);
                        return trimmeddata;
                    }
                },
                { data: "major" },
                { data: "minor" },
                { data: null, visible: false},
                {
                    data: "name",
                    render: function(data, type, row, meta) {

                        return '<i class="fas fa-info-circle" style="color: Dodgerblue;" data-bs-toggle="popover" data-bs-placement="top" title="About" data-bs-content="' + data + '"></i>';

                    }
                }

        ],
        select: {
            style: "single",
            selector: "td:not(:last-child)"
            },
        pageLength: 25,
        rowGroup: {
            dataSrc: function(row) {
                data = row.namespace;
                split_array = data.split(':');
                ans = split_array.splice(-2).join(':');

                cut_off_part = split_array.join(':');

                return cut_off_part;
            }
        }
    } );

    serviceContractsTable.off( 'select').on( 'select', function () {


        if (serviceProducersTable instanceof $.fn.dataTable.Api) {
            serviceProducersTable.destroy();
        }


        selectedServiceContract = serviceContractsTable.rows( { selected: true } ).data()[0].id;

        getServiceProducers();

    } );

    // Make info icons Boostrap 5 popovers
    var popoverTriggerList = [].slice.call(document.querySelectorAll('[data-bs-toggle="popover"]'));
    var popoverList = popoverTriggerList.map(function (popoverTriggerEl) {
        return new bootstrap.Popover(popoverTriggerEl);
    });

}

Rawland_Hustle · December 2021

Lol, I just fixed it by changing { data: null, visible: false} to { data: 'namespace', visible: false}. Thanks for your help!

kthorngren · December 2021

An alternative is to use Orthogonal data. You could return the string manipulation for the display operation and the column data for the others, like this:

                {
                    data: "namespace",
                    render: function ( data, type, row, meta ) {
                      if (type === 'display) { 
                        split_array = data.split(':')
                        ans = split_array.splice(-2).join(':')
 
                        var trimmeddata = ans.substring(0, ans.length - 11);
                        return trimmeddata;
                     }
                     return data;
                    }
                },

Kevin

Row grouping on rendered column

Row grouping on rendered column

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Row grouping on rendered column

Row grouping on rendered column

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