Datatables ajax response not loading data into table

Question

Datatables ajax response not loading data into table

I don't have much experience with JavaScript, so I believe there may be a misconfiguration or something that I'm overlooking.

My current setup involves using Datatables v1.10.7. I have a table with the required parts - a thead, tfoot, and a tbody in that order.

I'm implementing server-side processing to fetch data and populate the table.

In addition to Datatables functionality, I also want to perform some actions related to the fetched data. This is why I wanted to use a callback function.

$('#target-list-li').DataTable({
    processing: true,
    serverSide: true,
    pageLength: 100,
    ajax: {
        url: ajax_url,
        success: function(data) {
            // Perform additional tasks here
            return data;
        }
    },

    columns: [
        {
            data: 'trans_source_id',
            render: function (data, type, row) {
                var html = '';

                html += '<input type="checkbox" id="check-' + row.trans_source_id + '" ';

            },
            orderable: false
        },

        // More columns would go here but they have been removed as they are not relevant to the question
});

The issue or misunderstanding of how it works most likely lies within this particular line of code: success: function(data).

I anticipated being able to manipulate the data before returning it. Note that I do not intend to modify the original data, just extract some information from it.

success: function(data) {
    // Perform some tasks here
    return data;
}

However, this approach does not work at all. Even if I simply return the data without any changes, the table remains empty. The Ajax call seems to get completed, yet nothing appears in the table.

https://i.stack.imgur.com/jnnmT.png

The recommended solution for working with Ajax seems to be using dataSrc. According to the documentation,

dataSrc: function(data) {
    return data;
}

This method "sort of" works - the table gets populated with data, though it's an improvement compared to using success.

Here is how my table looks with the dataSrc attribute implemented.

https://i.stack.imgur.com/RGqvf.png

The documentation lacks clarity on this topic, or perhaps I am unable to find a relevant solution to my issue.

My expectation was to make an Ajax call, manipulate the fetched data for some callbacks without altering the original data, then return the original data. However, this doesn't seem to be the case here.

If anyone can provide guidance on resolving this issue, I would greatly appreciate it.

javascript ajax datatable datatables

Answer 1

Answer №1

In my recent project, I had the opportunity to utilize the Datatables plugin and adopted a commonly used approach for it:

1) Initially, the process involved fetching data by sending an ajax post request to the server.

2) Upon receiving the response from the server with the required data, the next step was to utilize the success callback function to manipulate the data according to specific requirements before proceeding to create and display the table.

For your reference, the code snippet below demonstrates a typical implementation of this approach:

// Begin by sending an ajax post request to fetch data from the server.

$.ajax({
    type: "POST", /* Alternatively, use GET if supported by the server */
    dataType: "json" /* Choose the appropriate data type based on your needs */,
    url: ajax_url,
    success: function(data)
    {
        // Log the received data to understand its format.
        console.log(data);

        // Perform any necessary preprocessing steps here...

        // Generate and display the datatable.
        // Assuming that "data.data" contains the source data for the table.
        createDatatable(data.data);
    },
    error: function()
    {
        alert('Failed to retrieve data from the server');
    }
});

// Function for creating and displaying the datatable.

function createDatatable(srcData)
{    
    $('#target-list-li').DataTable({
        pageLength: 100,
        data: srcData,
        columns: [
            {
                data: 'trans_source_id',
                render: function (data, type, row)
                {
                    var html = '';
                    var sId = row.trans_source_id;
                    html += '<input type="checkbox" id="check-' + sId + '" ';
                },
                orderable: false
            },
            // Additional columns can be included as needed, though omitted here for brevity.
        ],
    });
}

Answer 2

In my recent project, I had the opportunity to utilize the Datatables plugin and adopted a commonly used approach for it:

1) Initially, the process involved fetching data by sending an ajax post request to the server.

2) Upon receiving the response from the server with the required data, the next step was to utilize the success callback function to manipulate the data according to specific requirements before proceeding to create and display the table.

For your reference, the code snippet below demonstrates a typical implementation of this approach:

// Begin by sending an ajax post request to fetch data from the server.

$.ajax({
    type: "POST", /* Alternatively, use GET if supported by the server */
    dataType: "json" /* Choose the appropriate data type based on your needs */,
    url: ajax_url,
    success: function(data)
    {
        // Log the received data to understand its format.
        console.log(data);

        // Perform any necessary preprocessing steps here...

        // Generate and display the datatable.
        // Assuming that "data.data" contains the source data for the table.
        createDatatable(data.data);
    },
    error: function()
    {
        alert('Failed to retrieve data from the server');
    }
});

// Function for creating and displaying the datatable.

function createDatatable(srcData)
{    
    $('#target-list-li').DataTable({
        pageLength: 100,
        data: srcData,
        columns: [
            {
                data: 'trans_source_id',
                render: function (data, type, row)
                {
                    var html = '';
                    var sId = row.trans_source_id;
                    html += '<input type="checkbox" id="check-' + sId + '" ';
                },
                orderable: false
            },
            // Additional columns can be included as needed, though omitted here for brevity.
        ],
    });
}

Datatables ajax response not loading data into table

Answer №1

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