make non editable columns editable for newly added row

Question

I have created enhanced grid in which Column1 is non editable, but user can edit other columns and can update. But when i add the new row, new row is blank and i should allow to edit and type the data in all columns. But as editable is not true for first column, i could not able to edit column1 of newly added row to give information. Please suggest how can i edit column1 for newly added blank row but not for existing row.Please find the fiddle : http://jsfiddle.net/Q9GYv/77/

Below is the code:

require(['dojo/_base/lang', 'dojox/grid/EnhancedGrid', 'dojo/data/ItemFileWriteStore', 'dijit/form/Button', 'dojo/dom', 'dojo/domReady!'],

function (lang, EnhancedGrid, ItemFileWriteStore, Button, dom) {
    /*set up data store*/
    var data = {
          items: [{
            col1 : "John",
            col2 : "aa",
            col3 : "bb",
            col4 : "cC"
         }]
    };

    var store = new ItemFileWriteStore({
        data: data
    });

    /*set up layout*/
    var layout = [
        [{
            'name': 'FirstName',
                'field': 'col1',
                'width': '100px'
        }, {
            'name': 'LastName', editable: 'true',
                'field': 'col2',
                'width': '100px'
        }, {
            'name': 'Designation',editable:'true',
                'field': 'col3',
                'width': '200px'
        }, {
            'name': 'Address',editable:'true',
                'field': 'col4',
                'width': '150px'
        }]
    ];

    /*create a new grid*/
    var grid = new EnhancedGrid({
        id: 'grid',
        store: store,
        structure: layout,
        rowSelector: '20px',
        canEdit: function(inCell, inRowIndex) {
            if(inRowIndex === 0) {
                return true;
            }
            return this._canEdit;
        }
    });

    /*append the new grid to the div*/
    grid.placeAt("gridDiv");

    /*Call startup() to render the grid*/
    grid.startup();


    var button = new Button({
        onClick: function () {
            console.log(arguments);
            store.newItem({
                col1: "",editable:true,
                col2: "",
                col3: "",
                col4: "New Row"
            });

        }
    }, "addRow");
});

--EDIT--

Please suggest how can i make Column1 as editable when adding a new row and read-only when editing the existing row in the grid . Please find the fiddle http://jsfiddle.net/Q9GYv/77/ .

Answer 1

When creating your grid, you can override the canEdit function so that you can specify which rows cannot be modified. See below:

canEdit: function(inCell, inRowIndex) {
   if(inRowIndex === 0) { //Note that you can apply any conditions you want to this
      return false;
   }
   return this._canEdit;
}

You would also need to make your rows editable by default and I would suggest not allowing the 'id' row to be mutable as you're running a ItemFileWriteStore and that doesn't allow for changing an item's ID after it's been inserted.

I've updated your JSFiddle with these updates: http://jsfiddle.net/Q9GYv/75/

New fiddle with column 1 being uneditable for existing rows: http://jsfiddle.net/Q9GYv/78/