Re: RPG, retrieving JSON data from a web service

There is no node named success in your JSON. That's why node is null.

Instead, you have an array of objects with name, life, term and party. You
need to process through that array and for each object individually.

Processing arrays with YAJL is easy, and I think Jon already posted an
example of how to handle that. It should be in the archives or an older
thread.

Here's a great PDF from Scott that maybe you should spend some time on to
understand what JSON is, how it works, and how to use YAJL with it:

http://www.scottklement.com/presentations/Working%20with%20JSON%20in%20RPG.pdf

Bradley V. Stone
www.bvstools.com
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On Fri, Sep 1, 2017 at 10:22 PM, Booth Martin <booth@xxxxxxxxxxxx> wrote:

Next, I used a json file that had no errors when verified with the link
you supplied, Bradley. The affected code segment is:

docNode = yajl_stmf_load_tree(%trim(wIFSFileName): errMsg );
if errMsg = ' ';
node = YAJL_object_find(docNode: 'success');
result.success = YAJL_is_true(node);

docNode has a value.
errMsg is blank.
node is *null.
result.success = "0"

I am suspicious that node being *null is not a good thing?

The first few lines of the json file are:
[
{"name":"George Washington", "life":"1732-1799", "term":"1789-04-30 to
1797-03-04", "party":"No Party"},
{"name":"John Adams", "life":"1735-1826", "term":"1797-03-04 to
1801-03-04", "party":"Federalist"},
{"name":"Thomas Jefferson", "life":"1743-1826", "term":"1801-03-04 to
1809-03-04", "party":"Democratic-Republican"},
...
]

The application as a web page, is US Presidents <ventures.martinvt.com>


On 9/1/2017 8:09 AM, Bradley Stone wrote:

Booth,

...

Also, when asking for help, you may want to include code and the json
itself.


Bradley V. Stone
www.bvstools.com

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