Store data into a field

[alemrantareq]

Hi everybody, I have some data which I save into a field. If I close my app and re-open it, the field appears empty. I just need to know how can I store them into that field so that later I can modify them? Replies are most appreciated...

[FourthWorld]

http://www.revjournal.com/tutorials/sav ... ution.html

[alemrantareq]

Thanks FourthWorld for your reply; but the scripts seems to store the data into a file or folder. Instead I want to save them into the field. Is it possible?

[Klaus]

Thanks FourthWorld for your reply; but the scripts seems to store the data into a file or folder. Instead I want to save them into the field. Is it possible?

Apparently not
No, standalones cannot save themselves at all, you must use external files!


Best

Klaus

[Dixie]

How about using your main stack as a 'splash screen'.... which opens when you open your app... Have a button on the splash screen that opens a sub-stack and closes the 'splash screen'... You are now effectively using the sub-stack as the 'main' stack of your application..

In the stack script of your sub-stack, save the changes you have made, they will be there the next time you run your app.

Code: Select all

on closeStack
   save this stack
end closeStack

be well

Dixie

[FourthWorld]

Dixie's comments are spot-on. In fact, I rarely use text files for storage, preferring the richness of stack files.

Traditionally, it's considered good practice to separate code, data, and UI, so changes to any one of them can be made robustly and efficiently without affecting the others.

In most of my apps the document window the user sees is cloned from a template on the fly, and populated to display data stored in properties in a stack file. This way I can add new features or even completely overhaul the UI without affecting the user's data.

But for simpler apps there's often no harm in just storing the data in a field, so long as the stack holding the data is stored in a separate stackfile from the executable (since OSes don't allow apps to modify themselves), and providing that the data stack is stored in a folder that has write permissions (which may exclude the Applications (Mac) or Program Files (Win) folders for non-admin accounts.

If you find that you need to save your data stack in a user-writable folder, you can use the specialFolderPath function to find the path to the user's Documents folder on Mac and Win, e.g.:

Code: Select all

set the fileName of tMyClonedStack to (specialFolderPath("Documents")&"/MyData.rev")