Persistent data

Forum|Forum|6 years ago
August 15, 2019
3 replies
1301 views

I have an array of objects that need to be persistent. I have read that saving complex data can't be done as is but can be saved if in a string format. Any help in this area will be greatly appreciated. Also is there a special location to make this data persistent ie: global.setPersistent()?

Acrobat SDK and JavaScript

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Correct answer Joel Geraci

With Acrobat DC, you can use JSON.stringify() and JSON.parse() instead of toSource() and eval().

J

Jeff1776Author

Participating Frequently

Thanks!! Where does the persistent data get saved (shitdows)?

Joel Geraci

Community Expert

I use a folder level JavaScript and a PDF to save my persistent data into a form field in that PDF. It's stored as a JSON string that I parse into an object. The PDF gets opened as a hidden file and is disclosed so all other PDFs can get access to the object. It's stored in the same folder as the JavaScript.

Joel Geraci

Community Expert

I store my complex data as strings... of JSON... which allows me to use a single string to store all kinds of stuff.

Also, there is a global object but with the default security settings, only the document that set the value can retrieve the value.

try67

Community Expert

Yes, global.setPersistent(cVariable, bPersist). For example:

global.myText = "abc";

global.setPersistent("myText", true);

As for the array, that's true. You can only set string objects as persistent. You can use the toSource method to convert any object to a string, though, and then eval to convert it back to an object.

Joel Geraci

Correct answer

Community Expert

With Acrobat DC, you can use JSON.stringify() and JSON.parse() instead of toSource() and eval().

try67

Community Expert

I'm old-school...

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