67 lines
1.5 KiB
Python
67 lines
1.5 KiB
Python
import abc
|
|
|
|
|
|
class Model():
|
|
"""The Model class is the parent of all my models
|
|
"""
|
|
|
|
def __init__(self, db):
|
|
"""The __init__ method.
|
|
|
|
Args:
|
|
id (int): Database row id
|
|
"""
|
|
self.id = None
|
|
self.db = db
|
|
|
|
def isExistingObject(self):
|
|
"""Returns true if the object exists in database
|
|
|
|
Returns:
|
|
true if the object exists in database otherwise false
|
|
"""
|
|
if ((type(self.id) == int or type(self.id) == long) and self.id is not None and self.id > 0):
|
|
return True
|
|
else:
|
|
return False
|
|
|
|
@abc.abstractmethod
|
|
def insert(self):
|
|
"""Insert this object into database
|
|
|
|
Returns:
|
|
true on success otherwise false
|
|
"""
|
|
return False
|
|
|
|
@abc.abstractmethod
|
|
def update(self):
|
|
"""Update columns in database based on this object
|
|
|
|
Returns:
|
|
true on success otherwise false
|
|
"""
|
|
return False
|
|
|
|
@abc.abstractmethod
|
|
def validate(self):
|
|
"""Return true if object attribute values are valid
|
|
|
|
Returns:
|
|
true if object attribute values are valid otherwise false
|
|
"""
|
|
return
|
|
|
|
def save(self):
|
|
"""Save object data to database if attribute data is valid
|
|
|
|
Returns:
|
|
true on success otherwise false
|
|
"""
|
|
if (self.validate()):
|
|
if (self.isExistingObject()):
|
|
return self.update()
|
|
else:
|
|
return self.insert()
|
|
return False
|