Oligo Sample Form error if non-number sample ID given

[graik]

Reproduce:

1. new Oligo sample
2. use ID "rgo0118"
3. all else as normal,
4. Save

Error:

Request Method:	POST
http://strube.herokuapp.com/rotmic/oligosample/add/?container=93
1.6.11
ValueError
need more than 2 values to unpack
/app/rotmic/forms/sampleForms.py in clean_displayId, line 106
/app/.heroku/python/bin/python
2.7.11
['/app', '/app/.heroku/python/bin', '/app', '/app/.heroku/python/lib/python27.zip', '/app/.heroku/python/lib/python2.7', '/app/.heroku/python/lib/python2.7/plat-linux2', '/app/.heroku/python/lib/python2.7/lib-tk', '/app/.heroku/python/lib/python2.7/lib-old', '/app/.heroku/python/lib/python2.7/lib-dynload', '/app/.heroku/python/lib/python2.7/site-packages', '/app/.heroku/python/lib/python2.7/site-packages/setuptools-32.1.0-py2.7.egg', '/app/.heroku/python/lib/python2.7/site-packages/pip-9.0.1-py2.7.egg']
Mon, 18 Dec 2017 03:31:12 -0500

Request Method: POST
Request URL: http://strube.herokuapp.com/rotmic/oligosample/add/?container=93

Django Version: 1.6.11
Python Version: 2.7.11
Installed Applications:
('django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.sites',
'django.contrib.messages',
'django.contrib.staticfiles',
'django.contrib.humanize',
'django_comments',
'ratedcomments',
'south',
'selectable',
'reversion',
'rotmic',
'django.contrib.admin',
'storages')
Installed Middleware:
('django.middleware.common.CommonMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware')

Traceback:
File "/app/.heroku/python/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response
112. response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/app/rotmic/utils/customadmin.py" in wrapper
64. return self.admin_site.admin_view(view)(*args, **kwargs)
File "/app/.heroku/python/lib/python2.7/site-packages/django/utils/decorators.py" in _wrapped_view
99. response = view_func(request, *args, **kwargs)
File "/app/.heroku/python/lib/python2.7/site-packages/django/views/decorators/cache.py" in _wrapped_view_func
52. response = view_func(request, *args, **kwargs)
File "/app/.heroku/python/lib/python2.7/site-packages/django/contrib/admin/sites.py" in inner
198. return view(request, *args, **kwargs)
File "/app/.heroku/python/lib/python2.7/site-packages/reversion/revisions.py" in do_revision_context
300. return func(*args, **kwargs)
File "/app/.heroku/python/lib/python2.7/site-packages/django/utils/decorators.py" in _wrapper
29. return bound_func(*args, **kwargs)
File "/app/.heroku/python/lib/python2.7/site-packages/django/utils/decorators.py" in _wrapped_view
99. response = view_func(request, *args, **kwargs)
File "/app/.heroku/python/lib/python2.7/site-packages/django/utils/decorators.py" in bound_func
25. return func(self, *args2, **kwargs2)
File "/app/.heroku/python/lib/python2.7/site-packages/django/db/transaction.py" in inner
371. return func(*args, **kwargs)
File "/app/.heroku/python/lib/python2.7/site-packages/django/contrib/admin/options.py" in add_view
1146. if form.is_valid():
File "/app/.heroku/python/lib/python2.7/site-packages/django/forms/forms.py" in is_valid
129. return self.is_bound and not bool(self.errors)
File "/app/.heroku/python/lib/python2.7/site-packages/django/forms/forms.py" in errors
121. self.full_clean()
File "/app/.heroku/python/lib/python2.7/site-packages/django/forms/forms.py" in full_clean
273. self._clean_fields()
File "/app/.heroku/python/lib/python2.7/site-packages/django/forms/forms.py" in clean_fields
291. value = getattr(self, 'clean%s' % name)()
File "/app/rotmic/forms/sampleForms.py" in clean_displayId
106. letter, number, suffix = ids.splitSampleId( r )

Exception Type: ValueError at /rotmic/oligosample/add/
Exception Value: need more than 2 values to unpack