Update custom fields issue

[DragonZelda]

Hi,

When I update the custom fields or attach files, the following error will occur:
Error reading string. Unexpected token: StartArray. Path 'audit.events[0].previous_value', line 1, position 1489.

After checking, this problem occur because the audit event return previous_value in array format, for example:

{"id":10323257041,"type":"Change","value":["cherry_credits_account_issues","deleted"],"field_name":"tags","previous_value":["cherry_credits_account_issues","pending"]},

If first time attach file, previous_value will become:
"previous_value":[]

Please advice what should I do to handle this problem.
Thank you very much.

Regards,
Khaw How Cheng

[eneifert]

Hi Khaw How Cheng,

If you are talking about updating a ticket field itself, unfortunately that has never worked and the problem is with the api itself (not the c# interface). I believe that I submitted a bug a while back, but I can submit it again. If you are talking about merely setting an existing field, then I will need you to provide me with more information, as I have tested this and can not see any problems.

Also I'm not really sure I follow the error you are explaining. If it is reproducible, can you tell me what steps you did to see the error?

Also sorry to be repetitive but since I am able to use the api to upload files just fine I will need more information on how to reproduce that problem as well.

Hopefully we'll get it figured out,
Eric

[DragonZelda]

What I mean is update the custom_fields and it always work.
The problem is the C# interface cannot handle the return value.

Kindly please go to here:
http://developer.zendesk.com/documentation/rest_api/ticket_audits.html#audit-events

Search for "Ticket Change Events" -> "previous_value"
The Previous Value type is string / array.
But in your library, Models -> Shared -> Event.cs the previous value code is as following:

    /// <summary>
    /// Used when event is Change
    /// </summary>
    [JsonProperty("previous_value")]
    public string PreviousValue { get; set; }

Which means that audit event only accept string value.
So if any return previous value variable is in array format, error will occur as:

    Error reading string. Unexpected token: StartArray. Path 'audit.events[0].previous_value', line 1, position 1489.

The following is the sample. I update the tickets comments and custom fields, then the following code return:

"{"ticket":{"url":"https://cherrycredits.zendesk.com/api/v2/tickets/23046.json","id":23046,"external_id":null,"via":{"channel":"api","source":{"from":{},"to":{},"rel":null}},"created_at":"2013-01-15T03:13:46Z","updated_at":"2013-01-15T03:14:53Z","type":null,"subject":"Zendesk Testing Ticket Update Test","description":"Testing 123 ","priority":"normal","status":"solved","recipient":null,"requester_id":237396317,"submitter_id":237396317,"assignee_id":null,"organization_id":null,"group_id":null,"collaborator_ids":[],"forum_topic_id":null,"problem_id":null,"has_incidents":false,"due_at":null,"tags":["cherry_credits_account_issues","deleted"],"custom_fields":[{"id":21437213,"value":"deleted"},{"id":21437063,"value":"0"},{"id":21147097,"value":"T1207181814871J"},{"id":21123312,"value":"cherry_credits_account_issues"}],"satisfaction_rating":null,"sharing_agreement_ids":[],"fields":[{"id":21437213,"value":"deleted"},{"id":21437063,"value":"0"},{"id":21147097,"value":"T1207181814871J"},{"id":21123312,"value":"cherry_credits_account_issues"}]},"audit":{"id":10349790161,"ticket_id":23046,"created_at":"2013-01-15T03:14:53Z","author_id":245504337,"via":{"channel":"api","source":{"from":{},"to":{},"rel":null}},"metadata":{"system":{"ip_address":"116.12.134.130","location":"Singapore, 00, Singapore","latitude":1.2931000000000097,"longitude":103.85579999999999},"custom":{}},"events":[{"id":10349790171,"type":"Comment","author_id":245504337,"body":"This ticket is deleted by user.","html_body":"

This ticket is deleted by user.

","public":false,"trusted":true,"attachments":[]},{"id":10349790181,"type":"Change","value":["cherry_credits_account_issues","deleted"],"field_name":"tags","previous_value":["cherry_credits_account_issues","pending"]},{"id":10349790191,"type":"Change","value":"deleted","field_name":"21437213","previous_value":"pending"},{"id":10349790201,"type":"Change","via":{"channel":"rule","source":{"to":{},"from":{"id":30262543,"title":"User or Agent deletes ticket"},"rel":"trigger"}},"value":"solved","field_name":"status","previous_value":"new"}]}}"

In the return string, the following variable:
"previous_value":["cherry_credits_account_issues","pending"]}

cannot be accepted by the C# interface because it only handle string value.
Following error will occur:

    Error reading string. Unexpected token: StartArray. Path 'audit.events[1].previous_value', line 1, position 1713.

Regards,
How Cheng

[eneifert]

Hmm, I did exactly what you did but was unable to reproduce the error. However I changed the PreviousValue field to be of type object. So hopefully that will fix your problem.

[DragonZelda]

Thank you very much. The issue solve.

[eneifert]

Thanks for reporting the problem!