If you're doing your own module, you need to do the aliasing in the
included() method of the module:
module MyModule
def self.included(base)
base.send(:alias_method, :run_without_error_handling, :run)
base.send(:alias_method, :run, :run_with_error_handling)
end
def run_with_error_handling(...)
...
end
end
Capistrano::Configuration.send(:include, MyModule)
If you try to alias in the body of the module, then you'll get
complaints that the run method doesn't exist. And you'll also need to
make sure you are including your module after the Invocation module is
included.
- Jamis
On Tue, Dec 2, 2008 at 12:39 PM, StormSilver <[EMAIL PROTECTED]> wrote:
>
> Hi all,
>
> I would like to override
> Capistrano::Configuration::Actions::Invocation#run to add a little
> exception handling, namely, to ask if the user would like to continue
> anyway. Like so:
>
> def run_with_error_handling(*args, &block)
> begin
> run_without_error_handling(*args, &block)
> rescue Capistrano::CommandError => e
> say("#{e}")
> continue = confirm("The command failed. Do you want to continue
> anyway?")
> if (!continue)
> bail("Command failed.")
> end
> end
> end
>
> Simple, right? But I can't figure out how to set up the method chain
> the right way. Seems like whatever I do, ruby complains that:
>
> `alias_method': undefined method `run' for class `#<Class:
> 0x126c98c>::Capistrano::Configuration' (NameError)
>
> Huh! I have tried creating a new module with the method and aliases
> and including it in Capistrano::Configuration, and I have tried
> opening the Capistrano::Configuration::Actions::Invocation module and
> adding my aliases there.
>
> Here is what I'm doing:
>
> alias_method(:run_without_error_handling, :run) unless method_defined?
> (:run_without_error_handling)
> alias_method(:run, :run_with_error_handling)
>
> Can anyone shed a little light on this?
>
> Thanks,
> -- Eric
>
> >
>
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