[Koha-bugs] [Bug 18050] Missing constraint on aqbudgets.budget_period_id in aqbudgets

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

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=18050

--- Comment #2 from Katrin Fischer <katrin.fischer at bsz-bw.de> ---
Created attachment 110076
  -->
https://bugs.koha-community.org/bugzilla3/attachment.cgi?id=110076&action=edit
Bug 18050: Add FK constraint on aqbudgets.budget_period_id

This adds a FK constraint on aqbudgets.budget_period_id so that
a fund cannot be added with an invalid aqbudget.budget_period_id.

We should not have funds that belong to no budget. In case we have, the
update will be skipped and a note displayed.

Part1:
- Before applying the patch
- Make sure you have a budget with some funds linked to it
- You will have to change one of the funds to link to an invalid
  budget with SQL:
  UPDATE aqbudgets SET budget_period_id = 999 WHERE budget_id = max(budget_id);
- Apply patch
- Run updatedatabase - verify that you see the hint about 1 existing fund with
invalid budget.
- Repair your fund with SQL
  UPDATE aqbudgets SET budget_period_id = ... WHERE budget_id = max(budget_id);
  (... needs to be your existing budget_period_id)
- Run updatedatabase again - verify it runs successfully now.
- If you try to change the budget_period_id to a non-existing now with SQL, you
will
  get a database error. The new FK doesn't permit it.
Part 2:
- Start fresh with the web installer, verify there are no errors on
  creating the database tables

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