How to get display field value from Listgrid record

[michalg]

Hi,
I have a Listgrid attached to the RestDataSource with a foreign key field with valueField and displayField properties set.
This makes displaying description text in place of id value for that key field nicely.
I can get selected record and its values, but my question is:
How to get displayed value (description, not underlaying id value) for that key field ?
Thanks,
MichalG
ps sorry if this is trivial, but looks like I can't solve this easy way.

[phuqit]

If you're referencing another datasource using the foreign key, one of the ways to do it would be something along those lines:

treeGrid.addRowEditorExitHandler(new RowEditorExitHandler() {
                        @Override
                        public void onRowEditorExit(RowEditorExitEvent rowEditorExitEvent) {
                            RestDataSourceFactory.createForeignKeyDS().fetchData(
                                    new AdvancedCriteria("_id", OperatorId.EQUALS, rowEditorExitEvent.getRecord().getAttribute("foreignKeyId")),
                                    new DSCallback() {
                                        @Override
                                        public void execute(DSResponse dsResponse, Object o, DSRequest dsRequest) {
                                            // assume record is always there, add checks if necessary
                                            dsResponse.getData()[0].getAttribute("yourDescriptionProperty");
                                            // do whatever you want with the value
                                        }
                                    });
                        }
                    });

regards,
Andrius J.

[michalg]

Thanks for this.
Fetching for each key value is an option, but I wonder if there is a simpler method considering the fact that I already can see display values in the grid. I would like just to get them along with other ListgridRecord data to feed a chart drawing, for example.
MichalG

[michalg]

If anyone came across this:
There is ListGrid.getCell(), which can be used via JSNI.
It is discussed also here.
HTH
MichalG