Can not parse json object,

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question

Felix .Ng asked May 4, '20

Can not parse json object,

Hi, I've tried to use CloudScript to parse to an JSON object but it didn't work anymore. I want a JSON object but always get the string.

Note that the "inventory" in my code is my own custom inventory, not the Playfab built-in inventory

Typescript

        let inventoryInternalData = server.GetUserInternalData({
            PlayFabId:currentPlayerId,
            Keys: ["inventoryKey"]
        }).Data;
        try {
             response.inventory = JSON.parse(JSON.stringify(inventoryInternalData)); 
        } catch (e) {
            log.debug(e);
        }

Internal json object

{
  "myFile.txtInventory": {
    "__type": "Gokyo.Inventory.ItemCollectionSerializationModel,Assembly-CSharp",
    "value": {
      "items": [
        {
          "itemID": 12,
          "amount": 1,
          "collectionName": "Inventory",
          "upgradable": true,
          "currentLevel": 22,
          "rarityID": 0
        },
        {
          "itemID": 12,
          "amount": 1,
          "collectionName": "Inventory",
          "upgradable": true,
          "currentLevel": 10,
          "rarityID": 0
        },
        {
          "itemID": 1,
          "amount": 2,
          "collectionName": "",
          "upgradable": false,
          "currentLevel": 0,
          "rarityID": -1
        }
      ],
      "currencies": [
        {
          "currencyID": 0,
          "amount": 4444
        },
        {
          "currencyID": 1,
          "amount": 0
        }
      ]
    }
  }
}

The return result response.inventory

 "inventory": {
            "inventoryKey": {
                "Value": "{\"myFile.txtInventory\":{\"__type\":\"Gokyo.Inventory.ItemCollectionSerializationModel,Assembly-CSharp\",\"value\":{\"items\":[{\"itemID\":12,\"amount\":1,\"collectionName\":\"Inventory\",\"upgradable\":true,\"currentLevel\":22,\"rarityID\":0},{\"itemID\":12,\"amount\":1,\"collectionName\":\"Inventory\",\"upgradable\":true,\"currentLevel\":10,\"rarityID\":0},{\"itemID\":1,\"amount\":2,\"collectionName\":\"\",\"upgradable\":false,\"currentLevel\":0,\"rarityID\":-1}],\"currencies\":[{\"currencyID\":0,\"amount\":4444},{\"currencyID\":1,\"amount\":0}]}}}",
                "LastUpdated": "2020-05-02T13:28:01.722Z",
                "Permission": "Private"
            }
        }

I've tried to parse with a json editor. It works fine

,

CloudScript

jsonparse.png (27.3 KiB)

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Answer 1 · 2020-05-05T05:12:28Z

Seth Du answered May 5, '20

I have confirmed it on my testing environment and here is some clarification.

The value that stored in Player Data is always a string (stringify JSON), which means when you retrieve the value via GetUserData API, you don’t have to stringify it again. It is possible that due to the twice stringify process, you need to parse twice (since you only parse once, it is still a stringified JSON). Hence, I believe you can refer to my code to solve this issue:

handlers.testfunc = function(args,context) {
    var request = {
      "PlayFabId": currentPlayerId,
      "Keys": [
        "inventoryKey"
      ]
    };
    var result = server.GetUserData(request);
    return JSON.parse(result.Data.inventoryKey.Value);
    
};

8

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Felix .Ng commented · May 05, 2020 at 01:15 PM

Thanks for your respond.
I used to deploy the same way as you before, but it was not working as well.

Tried your code again, throwing an error message:

 "Error": {
        "Error": null,
        "Message": "There was a problem running testfunc. Check your arguments and try again.",
        "StackTrace": null
    }

If just JSON.parse(result.Data.inventoryKey) it throw this error:

"Error": {
        "Error": "JavascriptException",
        "Message": "JavascriptException",
        "StackTrace": "SyntaxError: Unexpected token o in JSON at position 1\n    at JSON.parse (<anonymous>)\n    at handlers.testfunc (59E5D-main.js:391:17)\n    at Object.invokeFunction (Script:116:33)"
    }

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Seth Du ♦ Felix .Ng commented · May 06, 2020 at 05:24 AM

How do you update/store this JSON data? Can you show your code? Please remember to hide personal information.

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Felix .Ng Seth Du ♦ commented · May 06, 2020 at 05:51 AM

For my test, I just paste the needed JSON in Player Data or Internal Data like this:

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storejson.png (25.4 KiB)

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Seth Du ♦ Felix .Ng commented · May 06, 2020 at 06:09 AM

The stringify process should be along with parse. For the real cause of this issue, you may refer to: https://stackoverflow.com/questions/40878388/unexpected-token-o-in-json-at-position-1-issue-with-parsejson

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Felix .Ng Seth Du ♦ commented · May 06, 2020 at 06:44 AM

why I can not run your code?

First execute updatetest, it works fine. Then execute readtest, it throws

{
    "FunctionResult": null,
    "Logs": null,
    "ExecutionTimeSeconds": 0,
    "MemoryConsumedBytes": 0,
    "APIRequestsIssued": 0,
    "HttpRequestsIssued": 0,
    "Error": {
        "Error": null,
        "Message": "There was a problem running readtest. Check your arguments and try again.",
        "StackTrace": null
    }
}

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