[kmail2] [Bug 413277] Custom message tags won't be saved

[bugzilla_noreply at kde.org]

https://bugs.kde.org/show_bug.cgi?id=413277

--- Comment #2 from fredgib at free.fr ---
(In reply to fredgib from comment #1)
> After a quick look with akonadi console, the error seems to be:
> 
> Cannot add or update a child row: a foreign key constraint fails
> (`akonadi`.`tagtable`, CONSTRAINT `tagtable_ibfk_1` FOREIGN KEY (`parentId`)
> REFERENCES `tagtable` (`id`) ON DELETE CASCADE ON UPDATE CASCADE)
> 
> Which is indeed impossible to process when the TagTable is empty. This
> constraint demands that the first item ever inserted in TagTable should
> reference a parentId, which is impossible.
> 
> A possible solution I can think of would be to have a generic/dummy item in
> TagTable by default at installation time.

I inserted a dummy message tag in TagTable with "parentId" pointing at its own
Id.

It allows new customised message tags to be saved with, though with big issues.
I always check the box "enable toolbar button" when I create a message tag.
When I click on "Apply" in the message tags settings GUI for the first time, it
works and displays the new buttons. If I then create another tag/button and
click on "Apply", will add a second instance of the previously created button
and the newly created button. If I create a third button then click on apply, I
will have 3 instances of the first button, 2 instances of the second button and
1 of the last button etc.

The tags list itself only has one instance of each created tag while the button
and the options in the menu "Messages > Mark As..." will have multiple
instances of the created tags.

If I restart kmail or the pim server with Akonadi console, nothing changes.

If I restart the computer, I now also have the multiple instances appearing in
the Configure Kmail > Appearance > Meassage tags GUI. From that point, I can
delete the duplicate instances and reach the expected result: A list with my
tags and their (unique) corresponding buttons.

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