Assaf,
Thanks for the reply. I tried your suggestion, but still got the same
issue. However, I looked at the error more closely and realized what the
problem really is. Rake is calling the block and passing in an instance
of self as a parameter. The method I defined did not have any parameters
defined, so it was throwing an error. As soon as I change the method to
the following, it worked fine:
setup_task(task)
logger.info "Running Task #{task_name}"
puts "Name: #{name}"
puts "directory: #{directory}"
end
Thanks again
Regards,
Jay Turpin
"Advice is what we ask for when we already know the answer but wish we
didn't." - Erica Jong
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Assaf Arkin
Sent: Monday, June 11, 2007 10:06 PM
To: Rake Development and Discussion
Subject: Re: [Rake-devel] task - block vs. to_proc
Jay,
In Ruby there's an argument list, and a separate way to receive a block.
When you call a method with { ... }, it passes that as a block, separate
from the argument list. You can also pass a method/proc, etc in place of
a block, by putting it last on the argument list and prefixing with an
ampersand.
Try this instead:
task task_name, &method(:setup_task).to_proc
Assaf
On 6/11/07, Turpin, Jay <[EMAIL PROTECTED]> wrote:
I am probably missing something obvious, but I don 't understand why
this won' t work. I have created a Base Task class that I use to
simplify the creation of cus tom Rake tasks. I' d like to let the
developer create a new task like this:
class SampleTask < BaseTask
attr_accessor :name, :directory
def initialize(params)
super params
end
setup_task
logger.info "Running Task #{task_name}"
puts "Name: #{name}"
puts "directory: #{directory}"
end
end
and then convert the method to a Proc in the base class and as sign it
to the task:
class BaseTask < Rake::TaskLib
attr_accessor :task_name
def initialize(params=:my_task_name)
@task_name = case params
w hen Hash
task params.keys[0] => params[params.keys[0]]
params.keys[0]
else
params
end
yield self if block_given?
create_task
end
def create_task
task task_name, method(:setup_task).to_proc
self
end
end
It doesn' t work. I get a wrong number of parameters error. However, if
I define setup_tas k() as a method that accepts a block, I can save that
block in a variable and then assign it. Something like this:
setup_task(&block)
@setup_task = block
e nd
def create_task
task task_name, &@setup_task
self
end
During inspection, they both resolve to Proc objects, so I am confused.
Any help would be appreciated. Thanks!
Regards,
Jay Turpin
"Respect cannot be learned, purchased, or acquired; it can only be
earned." - Bits & Pieces
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