def get_model(self, modelname):
""" Gets a model (or None) given a model name.
Args:
modelname: a string that should name a model
Returns:
a model class, or None (if no model's registered with that name)
Side effects:
sets response status to 400 if no model's registered with that name
"""
model = restutil.modelClassFromName(modelname)
if model is None:
self.handler.response.set_status(400, 'Model %r not found' % modelname)
return model
def get_model(self, modelname):
""" Gets a model (or None) given a model name.
Args:
modelname: a string that should name a model
Returns:
a model class, or None (if no model's registered with that name)
Side effects:
sets response status to 400 if no model's registered with that name
"""
model = restutil.modelClassFromName(modelname)
if model is None:
self.handler.response.set_status(400,
'Model %r not found' % modelname)
return model
def _get_model_and_entity(self, need_model, need_id, user):
""" Analyze self.request.path to get model and entity.
Args:
need_model: bool: if True, fail if classname is missing
need_id: bool: if True, fail if ID is missing
Returns 3-item tuple:
failed: bool: True iff has failed
model: class object or None
entity: instance of model or None
"""
classname, strid = jsonutil.path_to_classname_and_id(self.request.path)
self._classname = classname
if not classname:
if need_model:
self.response.set_status(400, 'Cannot do it without a model.')
return need_model, None, None
model = restutil.modelClassFromName(classname)
if model is None:
self.response.set_status(400, 'Model %r not found' % classname)
return True, None, None
if not strid:
if need_id:
self.response.set_status(400, 'Cannot do it without an ID.')
return need_id, model, None
try:
numid = int(strid)
except TypeError:
self.response.set_status(400, 'ID %r is not numeric.' % strid)
return True, model, None
else:
entity = model.get_by_id(numid)
if entity is None:
self.response.set_status(404, "Entity %s not found" % self.request.path)
return True, model, None
return False, model, entity
