Ilias Lazaridis wrote:
> Is there any way (beside a patch) to alter the behaviour to an
> existing function. Is ther a python construct similar to the
> "alias_method" of Ruby:
This is a Python list. Would you care to explain what alias_method does?
>
> (example from an simple evolution support for a ruby orm)
>
> #----------------------------------------------------------------------
> -------- # use "alias_method" to enlink the code
> #----------------------------------------------------------------------
> --------
>
> class SqliteAdapter
> alias_method :old_create_table, :create_table
> def create_table(*args)
> table_evolve(*args)
> result = old_create_table(*args)
> return result
> end
> end
>
This looks like alias_method does nothing much more than an assignment. If
you want to override a method in a base class then you can do it something
like:
class SqliteAdapter(BaseClass):
old_create_table = BaseClass.create_table
def create_table(self, *args)
self.table_evolve(*args)
result = self.old_create_table(*args)
return result
but the more usual way is just to call the original method directly in the
base class.
class SqliteAdapter(BaseClass):
def create_table(self, *args)
self.table_evolve(*args)
result = BaseClass.create_table(self, *args)
return result
If that isn't what you are trying to achieve you'll have to explain more.
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