JS delegates callling VFP server side functions

**SpringBox** · 2019-09-10, 11:56

Hi Guys

We are just getting to grips with using JS to call VFP servr side functions and got it to work in desktop preview mode but in Android tablet view mode it didnt work

We are using :

var result = Lianja.evaluate("serverside()");

Is the syntax different if calling from a mobile device?

Thanks in advance?

Simon

**SpringBox** · 2019-09-10, 12:15

Also - is there a reason why canvas sections and image gadgets do not show up on tablet preview or web preview but do on desktop preview?

Thanks

**SpringBox** · 2019-09-10, 12:42

Hi Guys

Is Phonegap still available from anywhere so we can test our forthcoming iPad app? Should we test it on Android instead?

Cheers

Simon

**barrymavin** · 2019-09-10, 13:18

Hi Simon,

No there's no difference. If you have deployed your server side code you can call it from any client; desktop, web and mobile.

its better to ask one question in each post so they can be answered individually.

**barrymavin** · 2019-09-10, 13:19

Originally Posted by SpringBox

Also - is there a reason why canvas sections and image gadgets do not show up on tablet preview or web preview but do on desktop preview?

Thanks

No they should do if you have checked the presentation rules for them.

**barrymavin** · 2019-09-10, 13:24

Originally Posted by SpringBox

Hi Guys

Is Phonegap still available from anywhere so we can test our forthcoming iPad app? Should we test it on Android instead?

Cheers

Simon

Apple took the Adobe Phonegap developer app out of the App Store a while back. Details on how to install it can be found on the phonegap site.

http://docs.phonegap.com/references/...p/install/ios/

It may be easier to test on an android device.

Many desktop web browsers (chrome for example) have the ability in the developer tools to switch to various emulation and geometry views such as phone or tablet also.

**barrymavin** · 2019-09-10, 13:29

Originally Posted by SpringBox

Hi Guys

We are just getting to grips with using JS to call VFP servr side functions and got it to work in desktop preview mode but in Android tablet view mode it didnt work

We are using :

var result = Lianja.evaluate("serverside()");

Is the syntax different if calling from a mobile device?

Thanks in advance?

Simon

Make sure your server proc is not reliant on the data session in desktop. In other words it should be stateless and not assume a database and tables are open. That's a common mistake made. Use push/pop datasession.

Run the app in a browser and from the JavaScript condole yiu can test your Lianja.evaluate() calls interactively.

**SpringBox** · 2019-09-10, 13:58

Thanks Barry

Understood about the stateless nature of the mobile UI.

So far these calls just flash up a messagebox so there is no data reliance yet.

Any thoughts?

Simon

**SpringBox** · 2019-09-10, 14:01

Yes sorry - one question per thread from now on.

Will try to keep the idiot questions to a minimum.

Thanks

Simon

**barrymavin** · 2019-09-10, 14:04

Originally Posted by SpringBox

Thanks Barry

Understood about the stateless nature of the mobile UI.

So far these calls just flash up a messagebox so there is no data reliance yet.

Any thoughts?

Simon

You cannot "flash up a message box" on the server. You can't use any UI commands in server code.