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Don't send email if the flow body is empty

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Posted on 14 Nov 2017 22:26:58 by Biswapati

Hi,

I have created a Flow to call the kusto function and email the kusto object as Bar chat. But I don't want to send an email if the kusto function return null or empyt. How to validate this. I have put the condition expression before sending email and try but didn't work as expected. Please let me know how to validate it. Any help will be appreciated.

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Biswapati on 06 Feb 2018 at 20:23:08

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Re: Don't send email if the flow body is empty

Run the flow and see the output by cliking on the "Search for users" action. Replace the 'Value' with the item that you are getting inside the Body as below (For your reference). I have used 'empty(body('Search_for_users')?['value'])' and working for me. If it's not working then I am just the beginner of the flow. You can post your question in the group. Someone ight help you.

Example:

Body
{
"value": []
}
ccollins 10 on 06 Feb 2018 at 19:08:47

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Re: Don't send email if the flow body is empty

I'm getting the following error:

InvalidTemplate. Unable to process template language expressions for action 'Does_user_exist' at line '1' and column '2223': 'The template language expression 'empty(body('Search_for_users')?['value'])' cannot be evaluated because property 'value' cannot be selected. Array elements can only be selected using an integer index. Please see https://aka.ms/logicexpressions for usage details.'.
Biswapati on 06 Feb 2018 at 19:05:20

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Re: Don't send email if the flow body is empty

Yes, Below expression work for me :

@empty(body('Run_query_and_list_results')?['value'])
ccollins 10 on 06 Feb 2018 at 18:53:31

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Re: Don't send email if the flow body is empty

Did you ever find a solution to this? I'm having the same problem.
Biswapati on 27 Nov 2017 at 21:02:04

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Re: Don't send email if the flow body is empty

Can anyone help me to resolve this issue. This issue is still open.
Biswapati on 21 Nov 2017 at 22:08:48

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Re: Don't send email if the flow body is empty

Can anyone please help me on resolve this issue. Even I can change to Html table instead of Bar chart. Please let me know the solution for both Html Table & bar chart.
Biswapati on 15 Nov 2017 at 18:12:21

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Re: Don't send email if the flow body is empty

Thanks for reply,
The connector is "Kusto - Run query and visualize results ". I have tried the expression @empty(body('Run_query_and_visualize_results')). But it's always return false whether the "Kusto - Run query and visualize results" return data or not. I have tried follwoing option that didn't work for me :
@contains(body('Run_query_and_visualize_results')?['body'], 'com.microsoft')
empty(item()?['appId'])
@and(empty(item()?['appId']), empty(item()?['standardDeviationRate']))
@and(empty(item()?['appId']), empty(item()?['standardDeviationRate']))
@empty(body('Run_query_and_visualize_results')?['body'])
@equals(body('Run_query_and_visualize_results')?['body'], '')
@equals(body('Run_query_and_visualize_results'), '')
@contains(body('Run_query_and_visualize_results'), 'com.microsoft')
@empty(body('Run_query_and_visualize_results'))
@not(empty(body('Run_query_and_visualize_results')['body']))
@contains(coalesce(body('Run_query_and_visualize_results')['body'], ''), 'com.microsoft')
@empty(coalesce(body('Run_query_and_visualize_results')['body'], ''))
Error-:
InvalidTemplate. Unable to process template language expressions for action 'Condition' at line '1' and column '2168': 'The template language expression 'not(empty(body('Run_query_and_visualize_results')['appId']))' cannot be evaluated because property 'appId' doesn't exist, available properties are 'attachmentName, attachmentContent, body'. Please see https://aka.ms/logicexpressions for usage details.'.

@not(empty(body('Run_query_and_visualize_results')['body']['appId']))
Error-:
InvalidTemplate. Unable to process template language expressions for action 'Condition' at line '1' and column '2168': 'The template language expression 'not(empty(body('Run_query_and_visualize_results')['body']['appId']))' cannot be evaluated because property 'appId' cannot be selected. Property selection is not supported on values of type 'String'. Please see https://aka.ms/logicexpressions for usage details.'.

Thanks
Biswapati
v-xida-msft on 15 Nov 2017 at 09:10:49

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Re: Don't send email if the flow body is empty

Hi @Biswapati,

Which connector do you use in your “Run query and visual results” action?

I don’t find the connector on my Microsoft Flow, so I could not make a test on my side.

According to the screenshot that you provided, please take a try to type the following formula in Condition box:

@empty(body('Run_query_and_visualize_results'))

Best regards,

Kris

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