Forum Discussion
Calling a function and function name is in a data row
Hello everyone,
I would like to add a new column using pre-made functions with 2 parameters, and the name of functions are in a column.
I used Expression.Evaluate + Record.Combine to accomplish so previously. However, as #shared only works in Power Query but does not work in Power BI, I need other solutions.
Could someone please help me with the correct M expression?
Thank you so much for your time and help.
1 Reply
Just found others' solution.
First, turn the functions that I need into a list then use that list.
var_Shared = #shared,
ProcessorFunctionNames = List.Select(Record.FieldNames(var_Shared),each Text.EndsWith(_,"Processor")),
Result = List.Transform(ProcessorFunctionNames, each _ & " = " & _ & ","),Original expression:
Expression.Evaluate( _[Processor] & "( _[Folder Path] & _[Name] , _[Publisher] )", Record.Combine({[_=_],#shared}))
New expression:
Expression.Evaluate( _[Processor] & "( _[Folder Path] & _[Name] , _[Publisher] )", Record.Combine({[_=_],Result}))
However, I am getting an expression error "Cannot turn values of List type into Record type.
Could anyone please help me with this line? Thank you very much.
