Updating Multiple Objects¶

This API updates multiple objects in a data table with a single request. Consider the following example, it demonstrates an API call which updates all objects in the Person data table where the value of the property age is greater than 20. As a result of the request, all updated objects will have the contactType property set to "personal":

Backendless.Data.of( "Person" ).bulkUpdate( "age > 20", { "contactType":"personal" } )
  .then( function( objectsUpdated ) {
    console.log( "Server has updated " + objectsUpdated + " objects" );
  })
  .catch( function( error ) {
    console.log( "Server reported an error " + error );
  })

Using Untyped ObjectsCustom Class/Function

Backendless.Data.of( "TABLE-NAME" ).bulkUpdate( whereClause, changes )
 .then( function( objectsUpdated ) {
  })
 .catch( function( error ) {
  });

function DataTypeX() {
  this.propertyA = "";
  this.propertyB = "";
}
Backendless.Data.of( DataTypeX ).save( whereClause, changes )
 .then( function( objectsUpdated ) {
  })
 .catch( function( error ) {
  });

where:

Argument	Description
`DataTypeX`	function/class identifying the table where the objects will be updated.
`"TABLE-NAME"`	name of the table where the objects will be updated.
`whereClause`	A string value containing the condition for selecting objects in the data table which will be updated.
`changes`	A JS object containing the changes which will be applied to all objects in the data table which match the condition expressed via `whereClause`.

Return Value¶

The API does not return any values.