jqgrid load large data set without pagination

Question

I was wondering whether there is a better way to load large Json data set from the server.

I am using jqgrid as loadonce:true. i need to load around 1500 records at once and also i don't use pagination options. is there any better way to achieve this? Thank you in advance.

This is my Grid code -

  $(function(){
        $("#testgrid").jqGrid({
            url:getGridUrl,
            datatype: 'json',
            mtype: 'GET',
            height: 250,
            colNames:['Inv No','Date', 'Client', 'Amount','Tax','Total','Notes'],
            colModel:[
                {name:'id',index:'id', width:60, sorttype:"int",search:false},
                {name:'invdate',index:'invdate', width:90, sorttype:"date",search:false},
                {name:'name',index:'name', width:100,search:false},
                {name:'amount',index:'amount', width:80, align:"right",sorttype:"float"},
                {name:'tax',index:'tax', width:80, align:"right",sorttype:"float",search:false},        
                {name:'total',index:'total', width:80,align:"right",sorttype:"float",search:false},     
                {name:'note',index:'note', width:150, sortable:false,search:false}      
            ],
            multiselect: true,
            multiboxonly:true,
            caption: "Manipulating Array Data",
            pager: '#testgridpager',
            //Auto load while scrolling
            //scroll: true,
            //to hide pager buttons
            pgbuttons:false,
            recordtext:'',
            pgtext:'',
            loadonce: true,
            sortname: 'id',
            sortorder: 'asc',
            viewrecords: true,
            multiselect: true,

            jsonReader : {
                root: "rows",
                //page: "page",
                //total: "total",
                records: "records",
                repeatitems: false,
                cell: "cell",
                id: "id"
            },
            loadComplete: function(data) {
            var rowId;
            //alert(data.length);
            //alert('load complete'+data.rows.length);
            //set checkboxes false if mode is set to true
            if(mode){
                for(var i=0;i<data.rows.length;i++){
                    rowId=data.rows[i].id;
                    disableRow(rowId);
                    var searchVal =  $("#gs_amount").val().trim();
                    if(searchVal ==data.rows[i].amount){
                        jQuery("#testgrid").jqGrid('setSelection',rowId);
                        //heighlightSearch();
                    }
                }
            }
        }
     });
        //toolbar search
        $("#testgrid").jqGrid('filterToolbar',{stringResult:true,searchOnEnter:false});
    });

    function disableRow(rowId){
    $("#testgrid").jqGrid('setRowData', rowId, false, {color:'gray'});
    var trElement = jQuery("#"+ rowId,$('#testgrid'));
    trElement.removeClass("ui-state-hover");
    trElement.addClass('ui-state-disabled');
    trElement.attr("disabled",true);
}

Could you include the javascript code which you currently use? Do you use local paging of the data? Do you use gridview:true parameter? — Oleg
@Oleg - Thanks oleg. i used gridView parameter. please find the updated question. — Sam
@Sam: I am very busy now, but if your problem will not be solved till Saturday I'll write you some suggestions. What do disableRow? I am not sure that I understand what you do inside of loadComplete. If in the filter bar for amount no data exist you should do nothing. If in amount the data exist the data are filtered and you should select all rows. Is it so? Moreover I don't see gridview:true parameter. Is the example which you posted the real example which you tested? How long time is the loading in your tests? Which browser is the most important for you? — Oleg
@Oleg - Thanks for your valuable time Oleg. this is the grid i used to test jqgrid. i just removed gridview param to check the consequences. inside loadComplete if the amount match the grid value amount it needs to get selected. you are right i do need to put empty check in loadComplete. I am still searching the better ways to do this(load large data). IE 8 will be my most important browser. Thanks for your response Oleg. I will looking forward to your thoughts among this.Appreciate it. — Sam
@Oleg - If you have some time can you please send me some directions about any approach for this? if you have time to spare only..Appreciate your help. — Sam

Oleg Oleg · Accepted Answer · 2011-04-17T00:17:36

On example of this demo you can see the time of loading 1500 rows for your grid in case of usage of gridview: true.

The most performance problem of your example are inside of loadComplete function. If you do need to make some modifications on the grid you should use jQuery to manipulate the grid contain. The best performance you can archive if you use DOM elements of the grid directly like in the example

loadComplete: function() {
    var i=0, indexes = this.p._index, localdata = this.p.data,
        rows=this.rows, rowsCount = rows.length, row, rowid, rowData, className;

    for(;i<rowsCount;i++) {
        row = rows[i];
        className = row.className;
        //if ($(row).hasClass('jqgrow')) { // test for standard row
        if (className.indexOf('jqgrow') !== -1) {
            rowid = row.id;
            rowData = localdata[indexes[rowid]];
            if (rowData.amount !== "200") {
                // if (!$(row).hasClass('ui-state-disabled')) {
                if (className.indexOf('ui-state-disabled') === -1) {
                    row.className = className + ' ui-state-disabled';
                }
                //$(row).addClass('ui-state-disabled');
            }
        }
    }
}

You can see the corresponding example live here.

In the implementation of loadComplete function I use the fact, that jqGrid having loadonce:true parameter use internal parameters _index and data which can be used to access the contain of the grid. In the example I disabled the rows which not contain "200" in the amount column.

UPDATED: The answer describes how to use rowattr callback to simplify the solution and to have the best performance (in case of gridview: true of cause).

jqgrid load large data set without pagination

2 Answers