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enabling/disabling checkboxes in a grid

To change the value of the chekboxes in a grid or enabling/disabling them follow this steps:

  • Go in your grid.
  • Move in “Column Events” section.
  • Create a new event: “Before Cell Click“.
  • Hook an action like this to the event:
var currentRecord = grid.getSelectionModel().getSelected().data;
if (currentRecord.fieldToTest == 1)\{
 /* Don't allow edits */
 return false;
\}else\{
 /* Allow edits */
 return true;
\}

Return false will prevent the natural behavior of the checkbox, making it unable to change status.