Recommended way to call an external API? (Web client compatible)

Hi Frederico!

You could use Quick Script in an Industrial Graphics symbol to achieve this, or the WEBSVC driver.

Check out this discussion on a similar topic, Ihope it answers your question.

Richard

 RE: Sending Messages with Rest API 

Hi Richard!

The WEBSVC driver looks interesting, I've managed to make a button that triggers a call to my webservice... I will keep experimenting this this, many thanks :) 

Hi Richard!

I've managed to make the WEBSVC driver work when used under the WindowViewer runtime, but the same application doesn't work when used with Web Client...

The WEBSVC driver is using a REST configuration.

At this stage the "application" is just a datagrid widget and a button. The button has an "Action script" on left animation, that does just this:

LogMessage("Refresh");
WSRun = 1;
grid.Datasource = WSResult;

WSRun is a tag that references the "ww.get.run" item of my WEBSVC, while WSResult references "ww.get.result"

As I said, when run under WindowViewer the grid gets correctly populated, while under Web Client I get only the "Refresh" log message, my external API doesn't get called at all... Am I going the wrong way?

I'm sorry, I've just found out that you need to have WindowViewer running, while using Web Client... Everything works as expected now, sorry for the noise :) 

Another problem... Tags are limited to 131 characters, but a web service using JSON quickly goes over that limit... Is it wrong to use a tag to get access to the results of the REST call? (WSResult, in my example)