CheckboxModel makes some particular fields editable - extjs4

Question

i am using checkboxmodel plugin for a checkbox column.But, what i want is that 'if i check a column some cells of that row will be editable'...i searched a lot but no luck.I am working with MVC pattern and because of the plugin i dont know how to handle it
/**Grid View**/
plugins: [
Ext.create('Ext.grid.plugin.CellEditing', {
clicksToEdit: 2
})
],
selType: 'cellmodel',
selModel: Ext.create('Ext.selection.CheckboxModel', {
checkOnly: true,
listeners: {
selectionchange: function(model, records) {
if (records[0]) {
//make any cell of a field editable
}
}
}
}),
{
header:'name',
dataIndex:'name'},
{
header:'Quantity',
dataIndex:'quantity',
}
here if i check any row i want to make the grid's quantity field editable...This would be nice if someone can help...

Answer 1

Try this:
1) create editor plugin instance for reference:
var editor = Ext.create('Ext.grid.plugin.CellEditing', {
clicksToEdit: 2
});
2) use this instance in grid plugin definition:
plugins: [
editor
]
3) modify your selModel definition to look something like this:
selModel: Ext.create('Ext.selection.CheckboxModel', {
checkOnly: true,
listeners: {
selectionchange: function(model, records) {
if (records[0] && !editor.editing) {
editor.startEdit(records[0], 2); // 2 is the number of column you want to edit
}
}
}
}),
Using this solution you will be able to edit only one cell when grid row is checked. Also you will need to implement additional logic to stop editing previously edited cell in case if selection change etc... Hope this hint will help you.