cancel
Showing results for 
Search instead for 
Did you mean: 
Reply
Super User
Super User

Test for Empty Array?

Hello. I'm using the O365Users connector to look up employees in Active Directory. If an employee is NOT in AD, the response is Body: []

I cannot figure out how to determine if "[]" is true using a Condition.

I've tried 10 different Expressions including:

  • empty(array('Search_for_users'))
  • array('Search_for_users', '[]')
  • array('Search_for_users', '/[/]')
  • []
  • '[]'
  • '/[/]'
  • string('[]')
  • and every other iteration I could think of!

flowAd5.png

Can anyone assist?

Thank you

1 ACCEPTED SOLUTION

Accepted Solutions
Super User
Super User

Re: Test for Empty Array?

Jeez, this is crazy. Finally got this after spending MANY hours trying every variation...

Apparently taking the Body from Search_for_users and comparing it to an empty() array...

flowAD6.png

Is NOT the same as adding empty() alone...

flowAD7.png

 

This is the type of thing that make learning Flow VERY DIFFICULT.

View solution in original post

6 REPLIES 6
Super User
Super User

Re: Test for Empty Array?

Jeez, this is crazy. Finally got this after spending MANY hours trying every variation...

Apparently taking the Body from Search_for_users and comparing it to an empty() array...

flowAD6.png

Is NOT the same as adding empty() alone...

flowAD7.png

 

This is the type of thing that make learning Flow VERY DIFFICULT.

View solution in original post

Munters
Level: Powered On

Re: Test for Empty Array?

I agree! I ran into the same problem.

I ended up convering the body array to a string and checking if the length was less or eq to 2 ([]):

 

length(string(body('Search_for_users')))

 

Not very elegant but it works for me.

edrisc
Level: Power Up

Re: Test for Empty Array?

gosh I wish I found this thread earlier... think I've gone through every iteration other than that one

Super User
Super User

Re: Test for Empty Array?

@RezaDorrani also showed me another method for this type of check. Might be of use to folks...

empty(body('Search_for_users')) is equal to true
FrankChen
Level: Power Up

Re: Test for Empty Array?

You don't need to convert to string. you can try use length(body('Search_for_users')) equal 0

Martin_MC
Level: Powered On

Re: Test for Empty Array?

Hello! And apologies for hijacking this thread slightly but I have a question on the back of it.

 

You / OP has said "If an employee is NOT in AD, the response is Body: []"

 

However I'm finding that the body for one particular flow / user is [] even though they ARE in AD. And I'm wondering if anyone knows why this might be? I can see the user has a handful of empty data fields within their AD user object (Job Title, Department etc) so my go-to thought is that they are being treated as a non-entity because one of these fields is empty, but I'm not sure if that's definitely the case, or which field if it is the case.

Helpful resources

Announcements
firstImage

Incoming: New and improved badges!

Look out for new contribution recognition badges coming SOON!

firstImage

Power Platform Online Conference

Join us for the first ever Power Platform Online Conference!

firstImage

New & Improved Power Automate Community Cookbook

We've updated and improved the layout and uploading format of the Power Automate Cookbook!

thirdimage

Power Automate Community User Group Member Badge

Fill out a quick form to claim your user group badge now!

fifthimage

Microsoft Learn

Learn how to build the business apps that you need.

sixthImage

Power Platform World Tour

Find out where you can attend!

seventhimage

Webinars & Video Gallery

Watch & learn from the Power Automate Community Video Gallery!

Top Solution Authors
Top Kudoed Authors
Users online (5,446)