[Koha-bugs] [Bug 19655] To.json doesn't escape newlines which can create invalid JSON

[bugzilla-daemon at bugs.koha-community.org]

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=19655

--- Comment #1 from Kyle M Hall <kyle at bywatersolutions.com> ---
Created attachment 69235
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https://bugs.koha-community.org/bugzilla3/attachment.cgi?id=69235&action=edit
Bug 19655 - To.json doesn't escape newlines which can create invalid JSON

JSON does not allow real line-breaks. If a field contains them and they are not
escaped, a JSON parser will be unable to convert the stringified JSON back into
an object.

This is clearly exemplified by the guarantor search, where a multi-line note on
the guarantor's record will break the ability to select that guarantor.

Test Plan:
1) Create Patron A with a "Circulation note" that has multiple lines in it
2) Create Patron B
3) Attempt to set Patron A to be the guarantor for Patron B
4) Note selecting the patron does nothing
5) Apply this patch
6) Repeat step 3
7) Selecting the guarantor now works!

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