CODEWITHSUNDEEP
javasortingvaadinvaadin-flowvaadin-grid
nick
nick

Reputation: 249

Error while trying to sort grid component in vaadin flow

I am getting this error when I try to sort the grid programmatically:

grid.sort(List.of(  
        new GridSortOrder<>(grid.getColumnByKey("Νο"), SortDirection.ASCENDING),
        new GridSortOrder<>(grid.getColumnByKey("επίθετο"), SortDirection.ASCENDING)
));

The error:

Cannot invoke "com.vaadin.flow.component.grid.Grid$Column.getInternalId()" because the return value of "com.vaadin.flow.component.grid.GridSortOrder.getSorted()" is null

Is it because I use Greek characters in Grid columns? Do you know any solution or workaround?

Upvotes: 1

Views: 443

Answers (1)

Paola De Bartolo
Paola De Bartolo

Reputation: 201

In order to call grid.getColumnByKey() you need to set the key for each column. This works okay:

    final String COL1 = "Νο";
    final String COL2 = "επίθετο";

    Grid<SomeBean> grid = new Grid<>();

    grid.addColumn(SomeBean::getId).setHeader("Column 1").setKey(COL1);
    grid.addColumn(SomeBean::getName).setHeader("Column 2").setKey(COL2);
     
    grid.sort(List.of(  
        new GridSortOrder<>(grid.getColumnByKey(COL1), SortDirection.ASCENDING),
        new GridSortOrder<>(grid.getColumnByKey(COL2), SortDirection.ASCENDING)
    ));

Upvotes: 4

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