How to create Json Parameter based on CDT of Array?

RE: How to create Json Parameter based on CDT of Array?

Mike Schmitt — Fri, 29 Jun 2018 15:06:23 GMT

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"}]

RE: How to create Json Parameter based on CDT of Array?

chandu — Fri, 29 Jun 2018 14:23:10 GMT

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.

RE: How to create Json Parameter based on CDT of Array?

viveku3486 — Fri, 29 Jun 2018 14:15:36 GMT

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 !!!

RE: How to create Json Parameter based on CDT of Array?

Mike Schmitt — Fri, 29 Jun 2018 14:01:21 GMT

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}

RE: How to create Json Parameter based on CDT of Array?

viveku3486 — Fri, 29 Jun 2018 13:59:43 GMT

RE: How to create Json Parameter based on CDT of Array?

viveku3486 — Fri, 29 Jun 2018 13:54:15 GMT

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"}

RE: How to create Json Parameter based on CDT of Array?

Mike Schmitt — Fri, 29 Jun 2018 13:44:06 GMT

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"}

RE: How to create Json Parameter based on CDT of Array?

viveku3486 — Fri, 29 Jun 2018 13:38:56 GMT

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.

RE: How to create Json Parameter based on CDT of Array?

Mike Schmitt — Fri, 29 Jun 2018 13:31:04 GMT

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