[Koha-bugs] [Bug 8480] auth_subfield_structure is not cleared when deleting an authority type

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

http://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=8480

Frédéric Demians <frederic at tamil.fr> changed:

           What    |Removed                     |Added
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  Attachment #37402|0                           |1
        is obsolete|                            |

--- Comment #3 from Frédéric Demians <frederic at tamil.fr> ---
Created attachment 37794
  -->
http://bugs.koha-community.org/bugzilla3/attachment.cgi?id=37794&action=edit
Bug 8480: Add constraint on auth_subfield_structure.authtypecode

In order not to have useless entries in the auth_subfield_structure
table, this patch modifies the DB structure to add a foreign key on the
authtypecode column.
Note that the auth_tag_structure already has this constraint.

Test plan:
0/ Don't apply this patch
1/ Create a now authority type 'RM_ME'
2/ Look at the MARC structure, to create the subfield structure and
populate the auth_subfield_structure table.
3/ Delete the authority type
4/ Using your SQL cli:
 SELECT COUNT(*) FROM auth_subfield_structure WHERE authtypecode='RM_ME';
=> The data are still in this table.
5/ Apply this patch
6/ Execute the updatedb entry
7/ Confirm the entries in the auth_subfield_structure table related to
RM_ME have been deleted
8/ Repeat 1, 2 and 3 and verify the auth_subfield_structure entries have
been correctly removed.

Signed-off-by: Frederic Demians <f.demians at tamil.fr>
- Works exactly as described in the (very good) test plan.
- After authority type deletion, auth_subfield_structure still contains
  entries for deleted authority type. Applying the patch clean the
  previously undeleted records in auth_subfield_strucute. Now deleting a
  authority type cleans propertly all appropriate records in
  auth_subfield_structure.
- Fix a merge conflict

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