[Bug 1750384] Re: Cannot Delete Recordset / Zone in ng_dns panels

[David Coronel]

I tested python-designate-dashboard version 6.0.0-0ubuntu1.2 from
bionic-proposed on Ubuntu 18.04.3 LTS and I confirm I can delete the DNS
zone successfully now.

ubuntu at juju-96d97f-22-lxd-14:~$ grep proposed /etc/apt/sources.list
deb http://archive.ubuntu.com/ubuntu/ bionic-proposed restricted main multiverse universe

ubuntu at juju-96d97f-21-lxd-14:~$ lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 18.04.3 LTS
Release:	18.04
Codename:	bionic

ubuntu at juju-96d97f-21-lxd-14:~$ dpkg -l python-designate-dashboard
[...]
ii  python-designate-dashboard  6.0.0-0ubuntu1.2  all   OpenStack DNS as a Service - dashboard plugin

I created a new zone and deleted it. I get the prompt to delete it
(which I didn't get without this package), and once I confirm the
deletion it removes it from the list.

If I refresh the page right away, the zone comes back but in Pending
state. After a few seconds I refresh again and the zone goes away for
good. So it works as expected.

Thanks.

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https://bugs.launchpad.net/bugs/1750384

Title:
  Cannot Delete Recordset / Zone in ng_dns panels

Status in Ubuntu Cloud Archive:
  Invalid
Status in Ubuntu Cloud Archive queens series:
  Fix Committed
Status in Designate Dashboard:
  Fix Released
Status in Designate Dashboard queens series:
  Triaged
Status in Designate Dashboard rocky series:
  Fix Released
Status in designate-dashboard package in Ubuntu:
  Invalid
Status in designate-dashboard source package in Bionic:
  Fix Committed

Bug description:
  [Impact]
  When trying to delete a zone the following error appears in the JS console:

      3bf910c7ae4c.js:1336 TypeError: Cannot set property 'labels' of undefined
          at Object.perform (155a6dc00894.js:1273)
          at Scope.genPassThroughCallback [as callback] (155a6dc00894.js:421)
          at fn (eval at compile (3bf910c7ae4c.js:1398), <anonymous>:4:469)
          at expensiveCheckFn (3bf910c7ae4c.js:1447)
          at callback (3bf910c7ae4c.js:1747)
          at Scope.$eval (3bf910c7ae4c.js:1516)
          at Scope.$apply (3bf910c7ae4c.js:1517)
          at HTMLAnchorElement.<anonymous> (3bf910c7ae4c.js:1747)
          at HTMLAnchorElement.dispatch (3bf910c7ae4c.js:332)
          at HTMLAnchorElement.elemData.handle (3bf910c7ae4c.js:305)
      (anonymous) @ 3bf910c7ae4c.js:1336
      (anonymous) @ 3bf910c7ae4c.js:1197
      $apply @ 3bf910c7ae4c.js:1517
      (anonymous) @ 3bf910c7ae4c.js:1747
      dispatch @ 3bf910c7ae4c.js:332
      elemData.handle @ 3bf910c7ae4c.js:305

  Recordsets get:

      TypeError: Cannot set property 'labels' of undefined
          at Object.perform (155a6dc00894.js:1236)
          at Scope.genPassThroughCallback [as callback] (155a6dc00894.js:421)
          at fn (eval at compile (3bf910c7ae4c.js:1398), <anonymous>:4:469)
          at expensiveCheckFn (3bf910c7ae4c.js:1447)
          at callback (3bf910c7ae4c.js:1747)
          at Scope.$eval (3bf910c7ae4c.js:1516)
          at Scope.$apply (3bf910c7ae4c.js:1517)
          at HTMLAnchorElement.<anonymous> (3bf910c7ae4c.js:1747)
          at HTMLAnchorElement.dispatch (3bf910c7ae4c.js:332)
          at HTMLAnchorElement.elemData.handle (3bf910c7ae4c.js:305)
      (anonymous) @ 3bf910c7ae4c.js:1336
      (anonymous) @ 3bf910c7ae4c.js:1197
      $apply @ 3bf910c7ae4c.js:1517
      (anonymous) @ 3bf910c7ae4c.js:1747
      dispatch @ 3bf910c7ae4c.js:332
      elemData.handle @ 3bf910c7ae4c.js:305

  [Test Case]
  Deploy OpenStack and designate-dashboard enabled. Ensure that attempts to delete zone from dashboard are successful.

  [Regression Potential]
  The initScope method for action services has been removed in horizon stable/queens so this code doesn't currently work. This was fixed upstream over a year ago in designate-dashboard for stable/queens and above, and therefore should have received plenty of exercise in the field by now.

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