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Marcel van Wezel
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Parsing json ignores elements with $ naming
Question
JSON
Service
Application Type
Service
Platform Version
11.14.0 (Build 34092)

I have an Exposed POST method endpoint that consumes a Json body as (simplified) below.

{

    "transactions": [{

        "$type": "value0",

        "$values": [{

            "$type": "value1",

            "id": "value2"

        }]

    }]

}


When receiving calls to this endpoint, the names preceded by $ seem to be ignored by Outsystems. This can be tested by echoing back the request. The reponse is:

{    "transactions": [        {}   ]}


The catch is that the naming of the attributes and objects are given. A workaround by renaming these isn't feasible. 

Any thoughts how to tackle this issue?

0
0
6 days ago

Hi Marcel,

if we are working under the assumption that Outsystems can't deal very well with the $ signs in the names, a possible avenue to explore is manipulating the returned json in the OnResponse, making it more digestable by Outsystems.

So remove all $ from the names in the JSON (carefull not remove any $ from the content, though), and also take out al the $ signs in the Name In JSON properties.

Worth a try

Dorine

See solution in context
0
0
6 days ago

hi Dorine,

Your approach is working. Thanks a lot for that. Since it's not a preferred handling and error prone, I'm also submitting it for Outsystems support to have a look at.

Cheers,

Marcel 

1
0
6 days ago

Hi  Marcel,

Try to set the special character in "Name In JSON" property of the structure attribute, like show in the below image.


Usually if you create a structure using "Add Structure From JSON" feature in outsystems service studio, mostly you won't face these kind of issues.

I hope my solution will help you.

Regards,

Koushik



0
0
6 days ago

Hi Koushik,

Thanks for your inputs. The structure was created through "Add Structure From JSON" and contains $type and $values as "Name in JSON". So unfortunately isn't resolving the issue.  


Update:

If I alternate the namings and remove the $, te results are seemingly unpredicatable. If for instance I remove the $ on the first "type", then the request results into an incomplete response:

Request:

{  "transactions": [    {      "type": "type1",      "$values": [        {          "$type": "type2",          "id": "id2"        }      ]    }  ]}

Response: 

{    "transactions": [        {            "type": "type1",            "$values": [                {                    "id": "id2"                }            ]        }    ]}

If I do have the original names with $, then in the Test module the reponse is a failed to parse.....

{    "Errors": [        "Failed to parse JSON request content."    ],    "StatusCode": 400}

Test.oml

0
0
6 days ago

Hi Marcel,

if we are working under the assumption that Outsystems can't deal very well with the $ signs in the names, a possible avenue to explore is manipulating the returned json in the OnResponse, making it more digestable by Outsystems.

So remove all $ from the names in the JSON (carefull not remove any $ from the content, though), and also take out al the $ signs in the Name In JSON properties.

Worth a try

Dorine

0
0
6 days ago

hi Dorine,

Your approach is working. Thanks a lot for that. Since it's not a preferred handling and error prone, I'm also submitting it for Outsystems support to have a look at.

Cheers,

Marcel 

1
0
6 days ago
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