Flow Designer Script Check if variable is null

[jaubert]

In all transparency, I am not great at scripting.  I am using the scripting function in flow designer and I need help checking if my variables are null.  if they are not null I would like the workflow to go to the next step.  Below is where I started and I got stuck, please assist in any way possible.  

var candidateFound = fd_data.trigger.request_item.variables.candiate_found.getDisplayValue();

var cityLocation = fd_data.trigger.request_item.variables.city.getDisplayValue();

var stateLocation = fd_data.trigger.request_item.variables.u_state.getDisplayValue();

var startDate = fd_data.trigger.request_item.variables.start_date.getDisplayValue();

if ((candidateFound == null) && (cityLocation == null) && (stateLocation == null) && (startDate == null)); {

  return false;

}

I am assuming if it returns true then it will proceed to the next step.

Thanks,

Jewell

[James Chun]

Hi @jaubert,

You can do this without any code at all.

• Add Get Catalog Variables from Acess, and populate them as something like the below. Make sure you select all the variables needed

• Use 'IF' flow logic to check if the variables from the previous step are empty or not.

  

If you are keen on the script, something like the following will do:

var candidateFound = gs.nil(fd_data.trigger.request_item.variables.candiate_found);
var cityLocation = gs.nil(fd_data.trigger.request_item.variables.city);
var stateLocation = gs.nil(fd_data.trigger.request_item.variables.u_state);
var startDate = gs.nil(fd_data.trigger.request_item.variables.start_date);

if ((candidateFound) && (cityLocation) && (stateLocation) && (startDate)); {
    return false;
} else {
    return true;
}

Note that this will return false when ALL variables are empty.

Cheers

[jaubert]

Thank you for your response.  If I use the no code solution proposed will this also allow me to pause until the variables are no longer empty?  The "wait for condition" only allows me to select a table that is why I was using the script.

[James Chun · Accepted solution]

No worries, once you select an Item from the Conditions, the variable option appears in the condition. 

I confirmed the functionality works in my PDI but noticed that it does take a minute or two for the Flow to detect that the variables have been updated.

FYI, in the previous script, there is a semi-colon that should be deleted

if ((candidateFound) && (cityLocation) && (stateLocation) && (startDate)); {