The current object is a value set in a view. $this will access to a variable value within this value set.
||The name of the variable in the current view from which the value shall be retrieved.|
Returns the value for current value set and the named variable DERIVED_VAR.
// Get the value of the DERIVED_VAR, which is a variable defined in the view $this('DERIVED_VAR') // $this is equivalent but much faster than the explicit variable definition $('my_datasource.my_view:DERIVED_VAR')