def create(self,name,**kwargs):
'''
Creates a MetaModel with the given kwargs and saves it.
'''
if self._model:
raise MetaModelAlreadyAssigned
else:
try:
kwargs['name']=name
self._model=MetaModel(**kwargs)
self._model.save()
except:
raise
class Model(object):
'''
Model is a proxy class, which instances refer to exactly 1 MetaModel
instance.
'''
def __init__(self,*args,**kwargs):
'''
A MetaModel instance can either be provided as first argument or with
the keyword model
'''
self._model=args.get(0,None) or kwargs.get('model',None)
if not isinstance(self._model,MetaModel):
raise AssignedModelNotOfTypeMetaModel
super(Dynamo,self).__init__()
def get(self,key):
'''
Returns the MetaModel attribute key.
'''
try:
return getattr(self._model,key)
except:
raise
def set(self,key,value=None):
'''
Sets MetaModel attribute key to the specified value and saves it.
or
Accepts MetaModel and assigns it to the current instance.
'''
if not value and isinstance(key,MetaModel):
if self._model:
raise MetaModelAlreadyAssigned
else:
self._model=key
try:
setattr(self._model,key,value)
self._model.save()
except:
raise
def create(self,name,**kwargs):
'''
Creates a MetaModel with the given kwargs and saves it.
'''
if self._model:
raise MetaModelAlreadyAssigned
else:
try:
kwargs['name']=name
self._model=MetaModel(**kwargs)
self._model.save()
except:
raise
def add_field(self,name,**kwargs):
'''
Creates a field with the given kwargs, adds it to the
MetaModel, and saves both
'''
try:
kwargs['name']=name
kwargs['meta_model']=self._model
field=MetaField(**kwargs)
field.save()
except:
raise
def remove_field(self,name):
'''
Deletes the field with the specified name from the MetaModel and saves
it.
'''
def introspect(self):
'''
Introspects the MetaModel and its attached field and returns the informtions as a dict
'''
pass