How i can dynamically build part of a string array inside Compose

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Posted on by johnjohn123

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I have this json array which i am passing as part of an http request boy:-

here is the string:-

"peoplePickerInput":"[ { \"Key\":\"@{items('Apply_to_each_-_Certificates_2')?['EmailAddressNo1']}\"},{ \"Key\":\"@{items('Apply_to_each_-_Certificates_2')?['EmailAddressNo2']}\" } ]"

now i want to build a compose to check if the following is empty:-

@{items('Apply_to_each_-_Certificates_2')?['EmailAddressNo2']}

and if so to only have one item inside the array:-

"peoplePickerInput":"[ { \"Key\":\"@{items('Apply_to_each_-_Certificates_2')?['EmailAddressNo1']}\"}]"

so how i can do this inside compose and pass the output of the compose to the ""Send http request" action ?

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lbendlin 8,726 Super User 2026 Season 1 on at

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Use

empty(items('Apply_to_each_-_Certificates_2')?['EmailAddressNo2'])

to construct the string/enumeration either with two addresses or with one address.
johnjohn123 3,514 on at

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@lbendlin Thanks for the reply,, i know about empty function, my concern is about building the array , as you can see it already contain " & \" so not sure how i can construct the array string inside an expression? any advice?
lbendlin 8,726 Super User 2026 Season 1 on at

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If you feel uncomfortable doing the string escaping in a Compose action you can use a Control decision action (aka if then else) to handle the two scenarios separately. Maybe you can show what you have tried so far.
johnjohn123 3,514 on at

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@lbendlin having 2 branches inside a condition will require me to duplicate many steps, as there are many subsequent actions which depend on the result.. so i would better do it inside a compose.. but not sure how i can construct the array string? any advice?