def install(self, django_user):
"""
Install queries. Raise InstallException on failure.
"""
LOG.info('Installing sample query: %s' % (self.name, ))
try:
# Don't overwrite
model = models.SavedQuery.objects.get(owner=django_user,
name=self.name,
type=self.type)
msg = _('Sample design %(name)s already exists.') % {
'name': self.name
}
LOG.error(msg)
raise InstallException(msg)
except models.SavedQuery.DoesNotExist:
model = models.SavedQuery(owner=django_user, name=self.name)
model.type = self.type
# The data field needs to be a string. The sample file writes it
# as json (without encoding into a string) for readability.
model.data = simplejson.dumps(self.data)
model.desc = self.desc
model.save()
LOG.info('Successfully installed sample design: %s' %
(self.name, ))
def safe_get_design(request, design_type, design_id=None):
"""
Return a new design, if design_id is None,
Return the design with the given id and type. If the design is not found,
display a notification and return a new design.
"""
design = None
if design_id is not None:
try:
design = models.SavedQuery.get(design_id, request.user, design_type)
except models.SavedQuery.DoesNotExist:
messages.error(request, _('Design does not exist.'))
if design is None:
design = models.SavedQuery(owner=request.user, type=design_type)
return design
