question Re: Flow Designer Script Check if variable is null in ITSM forum

Flow Designer Script Check if variable is null

jaubert — Tue, 30 Apr 2024 20:11:29 GMT

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

Re: Flow Designer Script Check if variable is null

James Chun — Tue, 30 Apr 2024 20:39:08 GMT

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

Re: Flow Designer Script Check if variable is null

jaubert — Thu, 02 May 2024 13:20:11 GMT

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.

Re: Flow Designer Script Check if variable is null

James Chun — Thu, 02 May 2024 21:42:57 GMT

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)); {