How can I change the row colour in datagrid based on severity?

Question

How can I change the row colour in datagrid based upon the severity condition? I'm new to this EXTJS topic. I used to reader to read, store to store and writer to write the data. After fetching all the data into the grid, how can i change the row colour in datagrid based upon the severity condition? Can you explain me too bit with code working?

Answer 1

you can use the GridView class (Ext.grid.GridView) to manipulate the user interface of the grid. You can also the viewConfig property of the GridPanel. Here is an example:

viewConfig: {
        //Return CSS class to apply to rows depending upon data values
        getRowClass: function(record, index) {
            var c = record.get('change');
            if (c < 0) {
                return 'price-fall';
            } else if (c > 0) {
                return 'price-rise';
            }
        }
    }

ps: Example taken from ExtJS API documentations itself

The price-fall and price-rise are CSS that have background colors set accordingly. eg:

.price-fall { 
 background-color: #color;
}

.price-rise {
 background-color: #color;
}

Answer 2

You can do it by using the getRowClass method of GridView (see Ext JS API).

Quoted example from API documentation:

viewConfig: {
    forceFit: true,
    showPreview: true, // custom property
    enableRowBody: true, // required to create a second, full-width row to show expanded Record data
    getRowClass: function(record, rowIndex, rp, ds){ // rp = rowParams
        if(this.showPreview){
            rp.body = '<p>'+record.data.excerpt+'</p>';
            return 'x-grid3-row-expanded';
        }
        return 'x-grid3-row-collapsed';
    }
},

Answer 3

You could use a renderer for your column from your column model and then assign a css class like this:

so, the customRenderer function:

`

function customRenderer(value, metaData, record, rowIndex, colIndex, store) {
    var opValue = value;
    if (value === "Rejected") {
        metaData.css = 'redUnderlinedText';
    } else if (value === "Completed") {
        metaData.css = 'greenUnderlinedText';
    } else if (value === "Started") {
        metaData.css = 'blueUnderlinedText';
    }
    return opValue;

}`

And then your column:

        {
            header: 'Your Column Header',
            dataIndex: 'your_data_index',
            renderer: customRenderer
        }

Then your css could be like this:

.redUnderlinedText {
    background-color: blue,
    color: red;
    text-decoration: underline;
    cursor: pointer;
}