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[Bug 1480001] [NEW] Little improvement of errors show on volume Extend form

 

Public bug reported:

Now when extending a volume to a new size which is less then the current
one, we will pop up an error warning message on the top of the form instead
of beside the new size field. now change to use field specified error class
for more accurate.

And as Kirill Zaitsev suggested, it 
would be even better if we could incorporate https://docs.djangoproject.com/en/1.8/ref/forms/api/#django.forms.Form.add_error, which would not make us fiddle with form internals. but it was only added in django 1.7, and we support up to 1.5 but moving forward with django support seems like a nice idea.

** Affects: horizon
     Importance: Undecided
     Assignee: Zhenguo Niu (niu-zglinux)
         Status: In Progress

** Changed in: horizon
     Assignee: (unassigned) => Zhenguo Niu (niu-zglinux)

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https://bugs.launchpad.net/bugs/1480001

Title:
  Little improvement of errors show on volume Extend form

Status in OpenStack Dashboard (Horizon):
  In Progress

Bug description:
  Now when extending a volume to a new size which is less then the current
  one, we will pop up an error warning message on the top of the form instead
  of beside the new size field. now change to use field specified error class
  for more accurate.

  And as Kirill Zaitsev suggested, it 
  would be even better if we could incorporate https://docs.djangoproject.com/en/1.8/ref/forms/api/#django.forms.Form.add_error, which would not make us fiddle with form internals. but it was only added in django 1.7, and we support up to 1.5 but moving forward with django support seems like a nice idea.

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