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comp.lang.ruby

Rake Task: passing params and return values

Harp Oon

3/16/2008 5:21:00 AM

1. Is there a way to pass params to a rake task and have it return
values?

2. I have seen the ENV var being used to pass in the args to rake. Is it
thread safe? Are there any unintended consequences if two controllers
execute a new task?

3. Is it advisable to invoke a rake task (from a controller) to update
the DB?
--
Posted via http://www.ruby-....
2 Answers

Harp Oon

3/16/2008 7:56:00 AM

0

Harp Oon wrote:
> 1. Is there a way to pass params to a rake task and have it return
> values?
>
> 2. I have seen the ENV var being used to pass in the args to rake. Is it
> thread safe? Are there any unintended consequences if two controllers
> execute a new task?
>
> 3. Is it advisable to invoke a rake task (from a controller) to update
> the DB?

My tasks.rake file has:

task :my_script => :environment do
puts "ID: = #{args.user_id}"
end

and I invoke it using:

load "#{RAILS_ROOT}/Rakefile"
def update_user
Rake::Task["my_script"].invoke
end

Using the code above, how would I pass in arguments to the script?

--
Posted via http://www.ruby-....

Julian Leviston

3/31/2008 12:36:00 AM

0

Hi,

Why use rake to update the database? You're better off using the
controller to update the database, with a model or two - that is,
after all, what the model was designed for.

Julian.

On 16/03/2008, at 4:20 PM, Harp Oon wrote:

> 1. Is there a way to pass params to a rake task and have it return
> values?
>
> 2. I have seen the ENV var being used to pass in the args to rake.
> Is it
> thread safe? Are there any unintended consequences if two controllers
> execute a new task?
>
> 3. Is it advisable to invoke a rake task (from a controller) to update
> the DB?
> --
> Posted via http://www.ruby-....
>