How to create Json Parameter based on CDT of Array?

Have you tried a!toJson()? If so, is it doing anything wrong in particular?

Hey Mike,

Yes I tried a!toJson() function but the issue here is related to the format of data which I need. While using a!toJson() it gives me the result like

{"ID":"12","Identifier":"Abc","Label":"NumberOfPages","Value":"30"},

["ID":13,"Identifier":"Pqr","Label":"LastModified","Value":"2018-12-1"}


but I need something like
{"NumberOfPages":"30",LastModified":"2018-12-11"}

which is the combination of Label and Value.

Can you post an example of the code you're using?  The result you describe getting from a!toJson is not consistent with how I have seen it works when passed an actual CDT.

For example, this expression:

load(
  local!myCdt: {
    ID: 12,
    Identifier: "Abc",
    NumberOfPages: 30,
    LastModified: today()
  },
  
  a!toJson(local!myCdt)
)

 

produces the following output, which seems consistent with what you seem to be asking for:

{"ID":12,"Identifier":"Abc","NumberOfPages":30,"LastModified":"2018-06-29Z"}

Can you post an example of the code you're using?  The result you describe getting from a!toJson is not consistent with how I have seen it works when passed an actual CDT.

For example, this expression:

load(
  local!myCdt: {
    ID: 12,
    Identifier: "Abc",
    NumberOfPages: 30,
    LastModified: today()
  },
  
  a!toJson(local!myCdt)
)

 

produces the following output, which seems consistent with what you seem to be asking for:

{"ID":12,"Identifier":"Abc","NumberOfPages":30,"LastModified":"2018-06-29Z"}

Ok, Let me explain what I need exactly. Consider below is my CDT

local!CDT:{
ID:12,
Identifier:"Abc",
Label:"NumberOfPages" ,
Value:30
}


Now in the above CDT, We have total 4 fields i.e ID,Identifier,Label and Value. Now I need to convert the combination of Label and Value into Json format. i.e. My Value inside Label field is "NumberOfPages" and inside Value is "30".So I want to merge this two values in the form of Json like

{"NumberOfPages":"30"}

For this you would need some sort of custom code, as this isn't really a use case a!toJson is intended to work with.

The only suggestion I can think of is, use your original CDT and formulate a custom dictionary and then convert that to JSON, and afterwards manually swap out values within the resulting JSON string.  Note that this is a little complicated and might not scale very well.

load(
  local!myCdt: {
    ID: 12,
    Identifier: "Abc",
    Label: "NumberOfPages",
    Value: 30,
    LastModified: today()
  },
  
  local!customDictionary: {
    replaceWithLabel: local!myCdt.Value
  },
  
  local!initialJson: a!toJson(local!customDictionary),
  
  substitute(
    local!initialJson,
    "replaceWithLabel",
    local!myCdt.Label
  )
)

Result:

{"NumberOfPages":30}

Hey Mike,

Thanks for your quick responses and providing the help specific to what was needed. I really appreciate your efforts and time. You are CHAMP !!!

If you want to user an array of CDT, the you need to user forEach to loop through the each record, else your json will be messed up.

Fair point - presuming the original input is a CDT array with different Labels, we would want to handle the conversion in a loop.

with(
  local!myCdt: {
    {
      ID: 12,
      Identifier: "Abc",
      Label: "NumberOfPages",
      Value: 30
    },
    {
      ID: 47,
      Identifier: "XYZ",
      Label: "LastModified",
      Value: today()
    }
  },
  
  local!customDictionary: a!toJson(
    a!forEach(
      local!myCdt,
      with(
        local!initialJson: a!toJson(
          {
            replaceWithLabel: fv!item.Value
          }
        ),
        
        local!convertedJson: substitute(
          local!initialJson,
          "replaceWithLabel",
          fv!item.Label
        ),
        
        a!fromJson(local!convertedJson)
      )
    )
  ),
  
  local!customDictionary
)

Output: 

[{"NumberOfPages":30},{"LastModified":"2018-06-29Z"}]