How to bind checkbox in angular with DB MeanStack

hi all i work with angularjs ng-repeat .i want to bind checkbox based on db value true or false.but checkbox will not check/uncheck whether db value is true?

  <span  editable-checkbox="contacts.Active" e-name="Active" e-form="rowform" onaftersave="Dhkclick(contacts._id,contacts.Active)">
                                    </span>