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LeeS
Helper I
Helper I

Set values for items in a nested JSON Object

Hello all,

 

I'm hoping someone can help me / point me in the right direction with this, I've been struggling for a while on it now and cannot find any real solution online (that works) despite my assumption that this would be a straight forward task.

 

The Scenario

Each week, I receive the current list of stores active in my organisation (around 800 at any one time) in Excel format. Each row of this Excel is a single store, with columns of data about that store (name, unique store ID, the address of the store, the address of the business that owns the store (can be different to the address of the actual store), etc.)

I have an extensive set of flows that then read in the Excel data, take each store and look at the data in each column for that store, do some text clean-up (removing unwanted characters, capitalising the first letter of each word in some cases, removing extra spaces, converting dates to correct format, etc.)

The "Transform" actions I perform are done through Child Flows, which then return a "cleaned / cleansed" version of the text back to the main flow.

 

The Goal / Current Challenge

My idea is to encapsulate all the cleaned-up data coming back from each of the Child flows into a JSON object, with nested JSON objects inside it to structure the data in a single Object variable.

 

My problem is I cannot seem to set data for nested values.

 

I get various errors and / or unexpected outcomes.

 

 

My Test Flow

Because the actual JSON Object is somewhat larger, I have created a test flow (below) to simulate the issue.

 

Step 1 -I'm triggering the test flow manually, then Initializing an Object variable:

 

LeeS_0-1718029294058.png

 

The structure of the Object is as follows. It has 3 nested objects (People, Store and Business):

 

{
  "StoreID""",
  "Language""",
  "People": {
    "Owners""",
    "Managers"""
  },
  "Store": {
    "Name""",
    "Street_Address"""
  },
  "Business": {
    "BizName""",
    "BizStreet_Address"""
  }
}

 

Step 2 - Set the value of the Street Address for the store in a compose action. I got this method / approach from researching my issue online (set the value in a compose action then set the variable to the outputs of the compose (Step 3):

 

LeeS_1-1718029294547.png

 

The Expression used in the above Compose is as follows:

setProperty(variables('IncomingStore')['Store'],'Street_Address','Main Street 100')
 
 
Step 3 - Set the variable to the Outputs of the previous Compose action:
 
LeeS_2-1718029294076.png

 

 

This all runs fine and gives the following result:

 

LeeS_3-1718029294063.png

 

 

The Compose action seems to only provide the output of the Store nested object, so I am assuming it has placed it in the correct fields in the object and inside the Store sub-object?:

 

LeeS_4-1718029294064.png

 

 

Looks a bit confusing, as I would have expected the whole object to be shown with only the values updated as being changed, something like the following:

 

{
  "StoreID""",
  "Language""",
  "People": {
    "Owners""",
    "Managers"""
  },
  "Store": {
    "Name""",
    "Street_Address""Main Street 100"  <-- New value here in the nested object "Store"
  },
  "Business": {
    "BizName""",
    "BizStreet_Address"""
  }
}
 
 
If I take the next step and try to add another Compose and Set Variable action set to add the Business Address in the same way, I get an error;
 
LeeS_5-1718029294201.png

 

 


 

 

produces this error, saying the "Business" property doesn't exist:

 

LeeS_6-1718029294204.png

 

 

Unable to process template language expressions in action 'Set_the_value_of_the_Business_address_property' inputs at line '0' and column '0': 'The template language expression 'setProperty(variables('IncomingStore')['Business'],'BizStreet_Address','123 Some Other Street')' cannot be evaluated because property 'Business' doesn't exist, available properties are 'Name, Street_Address'.

 

 

Any and all help and advice would be appreciated!
5 REPLIES 5

Hi @LeeS 

 

When you assign compose action value in variable using "Set variable" action, the variable contains only 'Store' object:

{
    "Name""",
    "Street_Address""Main Street 100
  }

 So, action 'Compose 2' fails as it could not find the 'Business' object in the variable. You need to place the second compose action with the below expression before "Set variable" action:

setProperty(variables('IncomingStore')['Business'],'BizStreet_Address','123 Some Other Street')

 

 

 

 

If this helps & solves your problem, please remember to give a 👍 and accept my solution as it will help others in the future.

 

Thanks
Manish Solanki
View my blog
Linkedin

Hello @ManishSolanki 

 

That's exactly what I did do in that second compose. Even then, it told me the ['Business'] didn't exist

Hi @LeeS 

 

Your flow should like this:

ManishSolanki_0-1718081945165.png

You need to use both compose actions prior to 'Set variable' action.

 

 

 

If this helps & solves your problem, please remember to give a 👍 and accept my solution as it will help others in the future.

 

Thanks
Manish Solanki
View my blog
Linkedin

Hi @ManishSolanki 

 

Just so I'm clear, which on the Compose actions outputs are you using in the Set Variable action? don't I need both?

Hi @ManishSolanki 

 

OK, I see I just need to add the second setVariable action after the first one.

 

How would I then see the whole JSON Object with the new values set into the nested objects (just to see they have been properly assigned and to get an overview of all the values in one place)?

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