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Nithin_Vanam
Helper II
Helper II

Error retrieving data from a JSON object

‎04-29-2020 03:34 AM

Hello,

 

I am trying to retrieve data from a JSON object that has the below schema:

 

{
    "type": "array",
    "items": {
        "type": "object",
        "properties": {
            "Row": {
                "type": "array",
                "items": {
                    "type": "array",
                    "items": {
                        "type": "object",
                        "properties": {
                            "ColumnName": {
                                "type": "string"
                            },
                            "ColumnVaue": {}
                        },
                        "required": [
                            "ColumnName",
                            "ColumnVaue"
                        ]
                    }
                }
            }
        },
        "required": [
            "Row"
        ]
    }
}

 

 

A sample output corresponding to that schema is:

 

[
  {
    "Row": [
      [
        {
          "ColumnName": "Image Name",
          "ColumnVaue": "GLOBUS_000556_000115_0001.tif"
        },
        {
          "ColumnName": "Survey_Reference",
          "ColumnVaue": "ALS0219A"
        },
        {
          "ColumnName": "StreetAdress",
          "ColumnVaue": "167 Carmichael Road"
        },
        {
          "ColumnName": "City",
          "ColumnVaue": "TAURAMGA"
        },
        {
          "ColumnName": "StateProvinceCounty",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "Postcode",
          "ColumnVaue": "3110"
        },
        {
          "ColumnName": "E_mail",
          "ColumnVaue": "fred.chard@nu-abe.co.nz"
        },
        {
          "ColumnName": "PhoneNumber",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "CountryofResidence",
          "ColumnVaue": "New Zealand"
        },
        {
          "ColumnName": "CountryofResidence_OtherComments",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "SEX",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "MaritalStatus_Married",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "DOB",
          "ColumnVaue": "20/01/1983"
        },
        {
          "ColumnName": "CheckHereIfYouAreMemberOfUniOrAssociationTravelGroup",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "CheckHereIfYouAreBookedThisCruiseWithDeltaOrContinentalVacations",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "UK RESIDENTS ONLY",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "ItineraryCode",
          "ColumnVaue": "WGG"
        },
        {
          "ColumnName": "DepartureCode",
          "ColumnVaue": "0428"
        },
        {
          "ColumnName": "Invoice Number",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "Country",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "Title",
          "ColumnVaue": "Mr"
        },
        {
          "ColumnName": "FirstName",
          "ColumnVaue": "Chard"
        },
        {
          "ColumnName": "LastName",
          "ColumnVaue": "Alfred"
        },
        {
          "ColumnName": "Q1",
          "ColumnVaue": "9"
        },
        {
          "ColumnName": "Q5",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "Q11",
          "ColumnVaue": "Nile/Egypt,Rhine,Danube,Volga/Russia"
        },
        {
          "ColumnName": "Q12",
          "ColumnVaue": "Fewer than 6 months"
        },
        {
          "ColumnName": "Q13",
          "ColumnVaue": "Central Europe/Eastern Europe,Germany/Switzerland/Austria"
        },
        {
          "ColumnName": "Q14",
          "ColumnVaue": "River & Small Ship Cruising,Small Group Tours"
        }
      ]
    ]
  },
  {
    "Row": [
      [
        {
          "ColumnName": "Image Name",
          "ColumnVaue": "GLOBUS_000556_000115_0001.tif"
        },
        {
          "ColumnName": "Survey_Reference",
          "ColumnVaue": "ALS0219A"
        },
        {
          "ColumnName": "StreetAdress",
          "ColumnVaue": "167 Carmichael Road"
        },
        {
          "ColumnName": "City",
          "ColumnVaue": "TAURAMGA"
        },
        {
          "ColumnName": "StateProvinceCounty",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "Postcode",
          "ColumnVaue": "3110"
        },
        {
          "ColumnName": "E_mail",
          "ColumnVaue": "fred.chard@nu-abe.co.nz"
        },
        {
          "ColumnName": "PhoneNumber",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "CountryofResidence",
          "ColumnVaue": "New Zealand"
        },
        {
          "ColumnName": "CountryofResidence_OtherComments",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "SEX",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "MaritalStatus_Married",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "DOB",
          "ColumnVaue": "20/01/1983"
        },
        {
          "ColumnName": "CheckHereIfYouAreMemberOfUniOrAssociationTravelGroup",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "CheckHereIfYouAreBookedThisCruiseWithDeltaOrContinentalVacations",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "UK RESIDENTS ONLY",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "ItineraryCode",
          "ColumnVaue": "WGG"
        },
        {
          "ColumnName": "DepartureCode",
          "ColumnVaue": "0428"
        },
        {
          "ColumnName": "Invoice Number",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "Country",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "Title",
          "ColumnVaue": "Mr"
        },
        {
          "ColumnName": "FirstName",
          "ColumnVaue": "Chard"
        },
        {
          "ColumnName": "LastName",
          "ColumnVaue": "Alfred"
        },
        {
          "ColumnName": "Q1",
          "ColumnVaue": "9"
        },
        {
          "ColumnName": "Q5",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "Q11",
          "ColumnVaue": "Nile/Egypt,Rhine,Danube,Volga/Russia"
        },
        {
          "ColumnName": "Q12",
          "ColumnVaue": "Fewer than 6 months"
        },
        {
          "ColumnName": "Q13",
          "ColumnVaue": "Central Europe/Eastern Europe,Germany/Switzerland/Austria"
        },
        {
          "ColumnName": "Q14",
          "ColumnVaue": "River & Small Ship Cruising,Small Group Tours"
        },
        {
          "ColumnName": "Image Name",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "Survey_Reference",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "StreetAdress",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "City",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "StateProvinceCounty",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "Postcode",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "E_mail",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "PhoneNumber",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "CountryofResidence",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "CountryofResidence_OtherComments",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "SEX",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "MaritalStatus_Married",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "DOB",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "CheckHereIfYouAreMemberOfUniOrAssociationTravelGroup",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "CheckHereIfYouAreBookedThisCruiseWithDeltaOrContinentalVacations",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "UK RESIDENTS ONLY",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "ItineraryCode",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "DepartureCode",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "Invoice Number",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "Country",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "Title",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "FirstName",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "LastName",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "Q1",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "Q5",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "Q11",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "Q12",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "Q13",
          "ColumnVaue": ""
        },
        {
          "ColumnName": "Q14",
          "ColumnVaue": ""
        }
      ]
    ]
  }
]

 

 

I applied a Parse JSON function to parse this data which gives me two outputs. 1) Body and 2) Row

 

I applied another Parse JSON function to the output "Row" which has the below schema and sample:

 

{
    "type": "array",
    "items": {
        "type": "array",
        "items": {
            "type": "object",
            "properties": {
                "ColumnName": {
                    "type": "string"
                },
                "ColumnVaue": {}
            },
            "required": [
                "ColumnName",
                "ColumnVaue"
            ]
        }
    }
}


Sample:
[
  [
    {
      "ColumnName": "Image Name",
      "ColumnVaue": "GLOBUS_000556_000115_0001.tif"
    },
    {
      "ColumnName": "Survey_Reference",
      "ColumnVaue": "ALS0219A"
    },
    {
      "ColumnName": "StreetAdress",
      "ColumnVaue": "167 Carmichael Road"
    },
    {
      "ColumnName": "City",
      "ColumnVaue": "TAURAMGA"
    },
    {
      "ColumnName": "StateProvinceCounty",
      "ColumnVaue": ""
    },
    {
      "ColumnName": "Postcode",
      "ColumnVaue": "3110"
    },
    {
      "ColumnName": "E_mail",
      "ColumnVaue": "fred.chard@nu-abe.co.nz"
    },
    {
      "ColumnName": "PhoneNumber",
      "ColumnVaue": ""
    },
    {
      "ColumnName": "CountryofResidence",
      "ColumnVaue": "New Zealand"
    },
    {
      "ColumnName": "CountryofResidence_OtherComments",
      "ColumnVaue": ""
    },
    {
      "ColumnName": "SEX",
      "ColumnVaue": ""
    },
    {
      "ColumnName": "MaritalStatus_Married",
      "ColumnVaue": ""
    },
    {
      "ColumnName": "DOB",
      "ColumnVaue": "20/01/1983"
    },
    {
      "ColumnName": "CheckHereIfYouAreMemberOfUniOrAssociationTravelGroup",
      "ColumnVaue": ""
    },
    {
      "ColumnName": "CheckHereIfYouAreBookedThisCruiseWithDeltaOrContinentalVacations",
      "ColumnVaue": ""
    },
    {
      "ColumnName": "UK RESIDENTS ONLY",
      "ColumnVaue": ""
    },
    {
      "ColumnName": "ItineraryCode",
      "ColumnVaue": "WGG"
    },
    {
      "ColumnName": "DepartureCode",
      "ColumnVaue": "0428"
    },
    {
      "ColumnName": "Invoice Number",
      "ColumnVaue": ""
    },
    {
      "ColumnName": "Country",
      "ColumnVaue": ""
    },
    {
      "ColumnName": "Title",
      "ColumnVaue": "Mr"
    },
    {
      "ColumnName": "FirstName",
      "ColumnVaue": "Chard"
    },
    {
      "ColumnName": "LastName",
      "ColumnVaue": "Alfred"
    },
    {
      "ColumnName": "Q1",
      "ColumnVaue": "9"
    },
    {
      "ColumnName": "Q5",
      "ColumnVaue": ""
    },
    {
      "ColumnName": "Q11",
      "ColumnVaue": "Nile/Egypt,Rhine,Danube,Volga/Russia"
    },
    {
      "ColumnName": "Q12",
      "ColumnVaue": "Fewer than 6 months"
    },
    {
      "ColumnName": "Q13",
      "ColumnVaue": "Central Europe/Eastern Europe,Germany/Switzerland/Austria"
    },
    {
      "ColumnName": "Q14",
      "ColumnVaue": "River & Small Ship Cruising,Small Group Tours"
    }
  ]
]

 

 

The output of the second Parse JSON action gives me 4 outputs: 1) body 2)ColumnName 3) ColumnValue 4) Item

To a "Apply To Each" action i passed the Row from the first Parse JSON action and in a seperate compose action when i tried to display the ColumnName, i get an error :

 

'The template language expression 'items('Apply_to_each_3')['ColumnName']' cannot be evaluated because property 'ColumnName' cannot be selected. Array elements can only be selected using an integer index.

 

 

Below are the set of actions i described above along with their inputs:

Survey_Flow_1.PNG

 Survey_Flow_2.PNG

What i don't understand is with the first Parse JSON, i am able to access the first level structure with the below action:

Survey_Flow_3.PNG

 

However with the second Parse JSON, when i try to access data in the second level structure with the below action, it fails with the message that an array can only be accessed with an integer.

Survey_Flow_4.PNG

 

Below is the Flow error:

Survey_Flow_Error.PNG

 

Please advice as to how i can access the data in the second level of the JSON Object? That is data in ColumnName and CalumnValue keys. Thanks in advance.

 

Regards,

Nithin

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v-litu-msft
Community Support
Community Support
In response to Nithin_Vanam

‎04-29-2020 08:09 PM

Hi @Nithin_Vanam,

 

Because the Row is a two-dimensional array, so we should get the first member of the two-dimensional array by using index 0.

Then put its output into the Apply to each action, then using item()?['ColumnName'] and item()?['ColumnValue'] to get what you want, please have a try:

 

Annotation 2020-04-30 110313.png

 

Annotation 2020-04-30 110412.png

 

Best Regards,
Community Support Team _ Lin Tu
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

View solution in original post

Message 4 of 4
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efialttes
Community Champion
Community Champion

‎04-29-2020 04:23 AM

Hi!

In your 'Compose 25' I would remove current value and assign this expression instead:

first(item())

THe reason is, Row seems to be an array whose element is also an array (2 nested arrays)

"Row": [
        [
         {...},
         {...},
         {...},
         {...}
        ]
       ]

Hope this helps

Did I make your day? If so, mark my response as 'Solution' !!!

También escribo sobre Power Automate en este Blog y en Twitter

Message 2 of 4
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Nithin_Vanam
Helper II
Helper II
In response to efialttes

‎04-29-2020 05:22 PM

Hi @efialttes ,

 

The compose 25 action was for me to see the contents of the current item. However adding the expression you suggested resulted in this:

:{"ColumnName":"Image Name","ColumnVaue":"GLOBUS_000556_000115_0001.tif"}

Not sure how i would be able to retrieve data from this. I am looking for a way for me to parse the original JSON object and read each value corresponding to the key's ColumnName and ColumnValue. Thanks.

Message 3 of 4
505 Views
0 Kudos
v-litu-msft
Community Support
Community Support
In response to Nithin_Vanam

‎04-29-2020 08:09 PM

Hi @Nithin_Vanam,

 

Because the Row is a two-dimensional array, so we should get the first member of the two-dimensional array by using index 0.

Then put its output into the Apply to each action, then using item()?['ColumnName'] and item()?['ColumnValue'] to get what you want, please have a try:

 

Annotation 2020-04-30 110313.png

 

Annotation 2020-04-30 110412.png

 

Best Regards,
Community Support Team _ Lin Tu
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

Message 4 of 4
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