fetchDatabaseChanges

Declaration

Promise< CloudKit.DatabaseChangesResponse, CKError > fetchDatabaseChanges(
	optional Object options
);

Parameters

• options:

  Options to fetch database changes. This Dictionary object has one key:

  Key	Description
  syncToken	Identifies a point in the database’s change history. The first time you fetch changes, omit this key and if moreComing is true in the response, use the syncToken in the response in the next request until moreComing is false.

Return Value

A Promise object that resolves to a CloudKit.DatabaseChangesResponse object, or rejects to a CKError object.

Discussion

For example, use this method to fetch the zones that changed and then use the fetchRecordZoneChanges method to fetch the changed records in each zone.

database.fetchDatabaseChanges().then(function(response) {
   return database.fetchRecordZoneChanges(response.zones)
})
.then(function(response) {
   response.zones.forEach(function(zone) {
       zone.records.forEach(function(record) {
          // Apply the record change
       })
   })
})

See Also

Fetching Changes

• databaseScope
• fetchRecordZoneChanges