def convert(self, value, param, ctx):
"""Return the appropriate interger value. If a non-integer is
provided, attempt a name-based lookup and return the primary key.
"""
resource = tower_cli.get_resource(self.resource_name)
# Ensure that None is passed through without trying to
# do anything.
if value is None:
return None
# If we were already given an integer, do nothing.
# This ensures that the convert method is idempotent.
if isinstance(value, int):
return value
# Do we have a string that contains only digits?
# If so, then convert it to an integer and return it.
if re.match(r'^[\d]+$', value):
return int(value)
# Special case to allow disassociations
if value == 'null':
return value
# Okay, we have a string. Try to do a name-based lookup on the
# resource, and return back the ID that we get from that.
#
# This has the chance of erroring out, which is fine.
try:
debug.log('The %s field is given as a name; '
'looking it up.' % param.name,
header='details')
rel = resource.get(**{resource.identity[-1]: value})
except exc.MultipleResults as ex:
raise exc.MultipleRelatedError(
'Cannot look up {0} exclusively by name, because multiple {0} '
'objects exist with that name.\n'
'Please send an ID. You can get the ID for the {0} you want '
'with:\n'
' tower-cli {0} list --name "{1}"'.format(
self.resource_name, value), )
except exc.TowerCLIError as ex:
raise exc.RelatedError('Could not get %s. %s' %
(self.resource_name, str(ex)))
# Done! Return the ID.
return rel['id']
def convert(self, value, param, ctx):
"""Return the appropriate interger value. If a non-integer is
provided, attempt a name-based lookup and return the primary key.
"""
resource = tower_cli.get_resource(self.resource_name)
# Ensure that None is passed through without trying to
# do anything.
if value is None:
return None
# If we were already given an integer, do nothing.
# This ensures that the convert method is idempotent.
if isinstance(value, int):
return value
# Do we have a string that contains only digits?
# If so, then convert it to an integer and return it.
if re.match(r'^[\d]+$', value):
return int(value)
# Okay, we have a string. Try to do a name-based lookup on the
# resource, and return back the ID that we get from that.
#
# This has the chance of erroring out, which is fine.
try:
debug.log('The %s field is given as a name; '
'looking it up.' % param.name,
header='details')
rel = resource.get(**{resource.unique_criterion: value})
except exc.TowerCLIError as ex:
raise exc.RelatedError('Could not get %s. %s' %
(self.resource_name, str(ex)))
# Done! Return the ID.
return rel['id']