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Editorial Team
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Asked: 2026-06-03T03:56:18+00:00

I was using dataTable to display list of Objects (Primefaces 3.0) with no issues.

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I was using dataTable to display list of Objects (Primefaces 3.0) with no issues. But when I switched to 3.1RC1, I got the error :

DataModel must implement org.primefaces.model.SelectableDataModel when selection is enabled

There are two solutions for this problem:

  1. Adding rowKey, selection and selectionMode attributes to dataTable
  2. Implementing SelectableDataModel interface and extending a DataModel like ListDataModel for filling the dataTable

I am not able to decide which is the perfect solution. First solution looks simpler as it requires less code changes.
But, I am not sure whether it is ideal solution. Request you to help me out in deciding on this. Thank you.

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1 Answer

  1. Editorial Team

    Add rowKey to resolve the issue as this requires very little change to existing sources

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