[Koha-bugs] [Bug 14932] New: serials/serials-collection.pl-page is very slow. GetFullSubscription* checks permission for each serial!

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

http://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=14932

            Bug ID: 14932
           Summary: serials/serials-collection.pl-page is very slow.
                    GetFullSubscription* checks permission for each
                    serial!
 Change sponsored?: ---
           Product: Koha
           Version: master
          Hardware: All
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P5 - low
         Component: Serials
          Assignee: koha-bugs at lists.koha-community.org
          Reporter: olli-antti.kivilahti at jns.fi
        QA Contact: testopia at bugs.koha-community.org
                CC: colin.campbell at ptfs-europe.com

Currently we have subscriptions with 300+ serials received.
It takes a lot of time to show serials-collection.pl (~20s).
This is especially troublesome when receiving serials, since after receival we
get redirected to that page.

We no longer can receive daily serials in the allotted timeframe.

This quick and dirty fix prevents checking the subscription editing for each
serial, but instead checks it for the first serial only.

This reduced page load time by ~18s

TEST PLAN:
1. Receive ~300 serials (or just a bunch :)  )
2. Observe the gradual slowing of the receival action.

AFTER THIS PATCH:
1. Receive ~300 serials more (or just a bunch)
2. Observe a significant performance improvement.

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