Monday, October 23, 2017

Export JQGrid Data to CSV - JavaScript


//Create Grid Table
$("#JQGridName").jqGrid({
    datatype: "local",
    colNames: ['colname'], // Pass Col Name
    colModel: [{ name: 'colval'}], // Pass Col Values
    search: true,
    pager: '#JQGridPager', // Pass Grid Pager Name
    data: ExhbReportArrayData, // Pass Value for Grid
    rowNum: 20,
    rowList: [10, 20],
    viewrecords: true,
    shrinkToFit: false,
    height: 'auto',
    fixed: false,
    multiselect: true,
    forceFit: true
});

//Add Button to Grid Pager
$("#JQGridName").jqGrid('navGrid', '#JQGridPager', { view: true, del: false, add: false, edit: false, excel: true })
.navButtonAdd('#JQGridPager', {
    caption: "Export to Excel",
    buttonicon: "ui-icon-save",
    onClickButton: function (e) {
        exportData(e, '#JQGridName');
    },
    position: "last"
});

// Export Function - exportData

function exportData(e, id) {
    var gridid = jQuery(id).getDataIDs(); // Get all the ids in array
    var label = jQuery(id).getRowData(gridid[0]); // Get First row to get the labels
    var mydata = $(id).jqGrid('getGridParam', 'data');
    var obj = new Object();
    obj.count = mydata.length;
    obj.items = new Array();
    for (var i = 0; i < mydata.length; i++) {
        obj.items.push(mydata[i]);
    }
    var json = JSON.stringify(obj);
    JSONToCSVConvertor(json, "csv", 1);
}

// JSON to CSV Converter Function

function JSONToCSVConvertor(JSONData, ReportTitle, ShowLabel) {
    //If JSONData is not an object then JSON.parse will parse the JSON string in an Object
    var arrData = typeof JSONData != 'object' ? JSON.parse(JSONData) : JSONData;
    var CSV = '';
    //This condition will generate the Label/Header
    if (ShowLabel) {
        var row = "";
        //This loop will extract the label from 1st index of on array
        for (var index in arrData.items[0]) {
            //Now convert each value to string and comma-seprated
            row += index + ',';
        }
        row = row.slice(0, -1);
        //append Label row with line break
        CSV += row + '\r\n';
    }
    //1st loop is to extract each row
    for (var i = 0; i < arrData.items.length; i++) {
        var row = "";
        //2nd loop will extract each column and convert it in string comma-seprated
        for (var index in arrData.items[i]) {
            row += '"' + arrData.items[i][index].replace(/(<([^>]+)>)/ig, '') + '",';
        }
        row.slice(0, row.length - 1);
        //add a line break after each row
        CSV += row + '\r\n';
    }
    if (CSV == '') {
        alert("Invalid data");
        return;
    }
    //this trick will generate a temp "a" tag
    var link = document.createElement("a");
    link.id = "lnkDwnldLnk";
    //this part will append the anchor tag and remove it after automatic click
    document.body.appendChild(link);
    var csv = CSV;
    blob = new Blob([csv], { type: 'text/csv' });
    var isIE = false || !!document.documentMode;
    var isEdge = !isIE && !!window.StyleMedia;
    if (isIE) {
        window.navigator.msSaveOrOpenBlob(blob, 'DataName.csv'); // Downloaded File Name Value
    }
    else {
        var myURL = window.URL || window.webkitURL;
        var csvUrl = myURL.createObjectURL(blob);
        var filename = 'DataName.csv'; // Downloaded File Name Value
        jQuery("#lnkDwnldLnk")
                        .attr({
                            'download': filename,
                            'href': csvUrl
                        });
        jQuery('#lnkDwnldLnk')[0].click();
        document.body.removeChild(link);
    }
}

1 comment:

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