How to escape double quotes from the value of a JSON field

RE: How to escape double quotes from the value of a JSON field

Mike Schmitt — Fri, 20 Oct 2017 15:43:55 GMT

"We cannot restrict the source system, so we have to take care of it on our end."

Are you saying that the unescaped text is coming from the DB and you have no control over it? I don't believe it's valid JSON formatting in that case, and unless you're able to cook up some sort of manual parser (checking for any double quotes not either right after a ':' or right before a ',' or EOL, then subbing them out for the escaped equivalent), you might not be able to work with it.

Others here have pointed out that proper escaping of a double quote on JSON is a double-double-quote i.e. "", however after testing it out in Appian, it looks like an escaped quote is \". You can try it yourself like this: https://www.screencast.com/t/t3PYmFNaj

RE: How to escape double quotes from the value of a JSON field

saboulnaga — Fri, 20 Oct 2017 14:57:57 GMT

This is the correct way of doing it.

RE: How to escape double quotes from the value of a JSON field

Puspendu Pal — Tue, 17 Oct 2017 17:54:26 GMT

The double quotes can be escaped by double double quotes: "This is an ""example"" to show the issue".

RE: How to escape double quotes from the value of a JSON field

Carlos Santander — Tue, 17 Oct 2017 17:18:01 GMT

If you know the json fields ahead of time, you could preprocess the text before passing it to a!fromjson(). You could do a search to find "Title", "Name", and "Created", then take the values in between the fields ("This is an "example" to show the issue"), and manually replace the quotation marks in the value. You would then feed the resulting strint to a!fromjson.

I'm inclined to say that this is technically invalid json. You could use one of the many online validation tools out there to make a case that the source system makes a change because it's generating invalid data.

RE: How to escape double quotes from the value of a JSON field

kiranj — Tue, 17 Oct 2017 13:14:26 GMT

Stripwith(local!appianvalue,"") this will remove the double quotes where local!appianvalue has your value which is converted from JSON to Appian

RE: How to escape double quotes from the value of a JSON field

Jamal Case — Tue, 17 Oct 2017 01:51:43 GMT

You could use the stripwith() or cleanwith() functions to remove the double quotes. please refer to https://docs.appian.com/suite/help/17.3/fnc_text_cleanwith.html and https://docs.appian.com/suite/help/17.3/fnc_text_stripwith.html