Hi Bob,
I would take a different approach than the one Klaus recommends. I would separate my data completely from the presentation and business logic of the application (the way you currently are thinking).
If the data was basically text based (no images, movies, sounds) then I may consider storing it in either a text or XML file (or customTagged file format I build myself). Of course, if there was a LOT of data, I might consider using SQLlite or another DBase.
If the data included images, movies and/or sounds, then I would consider storing it in a stack...one that the user would never see. I don't know how Rob Cozens Seredipity Library works, but I suspect this is how he stores his data -- you might want to take a look at it.
Then, I would keep all business logic and the presentation (GUI) stuff in a standalone which cannot be written to. I would move data in and out of the standalone stack.
I don't like mixing content and business logic/Interface, especially when you'll be adding/deleting from stacks. It's one of my pet peeves about Rev- and I suspect one of the major support issues with the IDE: the fact that it actually saves itself..including business logic and any bugs or bad logic which may have been introduced during the many hours of a users programming. I digress.
So, my basic mantra is to never 'save' stacks other than data stacks. And never mix interface and business logic with changing data stacks.
hope this doesn't end up even confusing you more;-)
best,
Chipp
Bob Hartley wrote:
I've not been rev'd up for a while now (new job kept me away). I was looking at the threads regarding saving database data in a file.
I'm just trying to get my head roung the grand plan before I do down the wrong path like the last time (see database tutorial thread)
Some suggested that you could have a data directory with stack in it and have the standalone reference this... Eureka I thought!!!
OK tall me if I'm right on this please.
Can I have a premade database eg bob1 and make a standalone. Then have a stack file eg baddresstemplate.rev and have the data put in a .rev fiel.
Would it be something liek this (note: the syntax is made up)......
On mouse up (on a button called new entry)
Copy addresstemplate.rev to directory C:\Bobdata
put the text of field "bobs address" into field1 of card1 of stack addresstemplate.rev
end mouse up
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