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Nested Rails Files

Joe Wirtley

2/23/2008 1:15:00 AM

I'm having trouble making nested Rakefiles work. Say I have the
following:

+ Raketest
Rakefile
+ Child
Rakefile

This is a Raketest folder containing a rakefile, and a child folder
containing a different rakefile. In the Raketest folder, I have the
following Rakefile:

task :default do
sh "cd Child;rake"
end

The Child folder under this has the following Rakefile:

task :default do
puts "Child Rake Default task"
end

The following shows the result of running rake first in the child
folder, then in the Raketest folder:

C:\Raketest\Child>rake
(in C:/Raketest/Child)
Child Rake Default task

C:\Raketest\Child>cd ..

C:\Raketest>rake
cd Child;rake
(in C:/Raketest)
The system cannot find the path specified.
rake aborted!
Command failed with status (1): [cd Child;rake...]
C:/Raketest/rakefile.rb:2
(See full trace by running task with --trace)

When I run rake in the child folder, it works. When I run rake in the
Raketest folder, I get the "The system cannot find the path specified."
message. So what am I missing?

Just for good measure, I uninstalled all versions of Rake (via gem) then
installed the latest version, which didn't change anything.

I've attached my zipped contrived sample. I'd appreciate any help.

Attachments:
http://www.ruby-...attachment/1474/Ra...

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3 Answers

Mark Bush

2/23/2008 9:10:00 AM

0

Joe Wirtley wrote:
> When I run rake in the child folder, it works. When I run rake in the
> Raketest folder, I get the "The system cannot find the path specified."
> message. So what am I missing?

On UNIX (MacOS):
$ cat lib/tasks/Raketest/Rakefile
task :default do
sh "cd Child;rake"
end
$ cd lib/tasks/Raketest/
$ rake
(in /Users/bush/Src/Rails/sample/lib/tasks/Raketest)
cd Child;rake
(in /Users/bush/Src/Rails/sample/lib/tasks/Raketest/Child)
Child Rake Default task
$ rake --version
rake, version 0.8.1

My guess is that it has something to do with the way OS commands are
being executed under Windows. Can you run "cd Child; rake" like that
from the Windows prompt and get the right thing?

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Daniel Schömer

2/23/2008 9:30:00 AM

0

Mark Bush wrote:
> Joe Wirtley wrote:
>> When I run rake in the child folder, it works. When I run rake in the
>> Raketest folder, I get the "The system cannot find the path specified."
>> message. So what am I missing?
> [...]
>
> My guess is that it has something to do with the way OS commands are
> being executed under Windows. Can you run "cd Child; rake" like that
> from the Windows prompt and get the right thing?

For Windows cmd.exe, you can't use ';' to separate commands. You
have to use '&' to unconditionally them one after the other.

sh "cd Child & rake" # Windows only

Maybe '&&' will work on Unix and Windows.

sh "cd Child && rake"

Daniel
--
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Joe Wirtley

2/23/2008 4:28:00 PM

0

Daniel Schömer wrote:
> Mark Bush wrote:
>> Joe Wirtley wrote:
>>> When I run rake in the child folder, it works. When I run rake in the
>>> Raketest folder, I get the "The system cannot find the path specified."
>>> message. So what am I missing?
>> [...]
>>
> For Windows cmd.exe, you can't use ';' to separate commands. You
> have to use '&' to unconditionally them one after the other.
>
> sh "cd Child & rake" # Windows only
>
> Maybe '&&' will work on Unix and Windows.
>
> sh "cd Child && rake"
>
> Daniel

Thanks to both of you. I knew it had to be something simple. Both '&'
and '&&' appear to work on Windows.
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