dhis2-devs team mailing list archive

[Mark Polak <mark@xxxxxxxxxxxxxxx>]

Hey Knut, Araz,

The order for arrays is guaranteed according to the JSON standard i
believe. However for the objects property order  is not. (Just like in
Javascript)

But we (DHIS2) don't seem to always return the array in the same order from
the server side, so in that case you can't really trust the order like you
said.

Rework the list into a `Map`(JS Object) like Araz says will work. I just
coded you up a small function that does the transformation. See the
following gist link.

https://gist.github.com/Markionium/0e55e774b3c554521040#file-transformattributes-js

Regards,

Mark



On Sun, Nov 22, 2015 at 10:08 AM, Araz Abishov <araz.abishov.gsoc@xxxxxxxxx>
wrote:

> Hi Knut,
>
> What are you using for parsing JSON (which library)?
>
> In general you should never rely on order of items in JSON. It is better
> to interpret it as a "map" rather than "list".
>
> Best Regards,
> Araz
>
> On Sun, Nov 22, 2015 at 7:32 AM, Knut Staring <knutst@xxxxxxxxx> wrote:
>
>>
>> Below is a patient tracked entity instance
>>
>>
>>
>> In order  to get a first name or a last name from this attribute list, we
>> would have to loop through all the attributes until we find an attribute
>> that has the displayName "firstName", as all the attribute seem to be in
>> random order for each patient. That is inefficient and clunky. Is there a
>> way to get the data in a format that could be read by javascript more
>> easily?
>>
>>
>>
>> {
>>          "lastUpdated":"2014-03-28 12:33:47.354",
>>          "trackedEntity":"G0PlBqu2Boe",
>>          "created":"2014-03-26 15:46:02.45",
>>          "orgUnit":"DiszpKrYNg8",
>>          "trackedEntityInstance":"JRm9etA1dG1",
>>          "relationships":[
>>
>>          ],
>>          "attributes":[
>>             {
>>                "code":"MMD_PER_NAM",
>>                "displayName":"First name",
>>                "valueType":"TEXT",
>>                "attribute":"w75KJ2mc4zz",
>>                "value":"Kedija"
>>             },
>>             {
>>                "displayName":"Gender",
>>                "valueType":"TEXT",
>>                "attribute":"cejWyOfXge6",
>>                "value":"Female"
>>             },
>>
>> ...
>>          ]
>>       },
>>
>>
>>
>> I tried something like the below, but that doesn't seem to work. What am
>> I missing?
>>
>>
>>
>> https://play.dhis2.org/demo/api/trackedEntityInstances/PQfMcpmXeFE.json?fields=attributes[displayName]&filter=attributes[displayName]:eq:Gender
>>
>>
>>
>>
>>
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