SharePoint List Get Items what to do when Values equal Null

[DudelerDad]

I have a flow that runs once a week using a Recurrence. The Get Items connector for SharePoint filters the list based on the next weeks upcoming events. An email then is sent listing the upcoming events.

This has been working fine but now I would like to add a Condition so that when the Get Items Filter return Value: [] meaning no events for that week a different email is sent rather than my Flow just failing.

I can't figure out how to do this. I have tried a Condition where the value (List of Values) equals [ ], NULL, Blank, 0.

[ScottShearer · Accepted solution]

@DudelerDad:

You can use the length() expression to check for no items being returned by get items.  You'll find length() under the Collections heading.

In the example below, the variable will be set to zero if there are no items returned:

So, have a condition that checks for zero.

If this answers your question, please mark your post as Solved.

Scott

[DudelerDad · Accepted solution]

Thanks Scott that worked great and was easy to implement. I'm fairly new to Flow and the 'iniatilize variable' will come in handy.

[Wheatcroft]

@ScottShearer 

Hi Scott, 

I have tried to use this solution in a flow I am building to create/update items in a SharePoint list.

The 'Get items' action is within a 'For each' container, and when I try to add the 'Initialise variables' action I get an error;

'The operation 'Initialise variable' can only be used at top level'.

Are there any other methods to achieving this?

Many thanks,

Lucy

[ScottShearer · Accepted solution]

@Wheatcroft 

You can initialize the variable near the top of your Flow and before the loop - do not set it to a value.  Within the loop, use a Set Variable action and use the expression that I showed above to get the number of items.

[Wheatcroft]

Thanks @ScottShearer

This worked perfectly