Run rake task inside rails application

Hi all,

I want to run asset precompile task inside the rails application,As I
had
many dependencies who will change the code,in that case all the time
whenever they change i need to run the script as I cant give server
access
to them so I am providing the GUI for them from that they alone can run
the
script,so,I have built UI to run the task with some parameter like

 system("Template='#{params[:template]}' Theme='#{params[:theme]}' 

rake assets:precompile)

I am getting two values from
UI(params[:template],params[:theme]).Another
thing i want to run this task in another path(site path) means Admin
side
UI is there that task should execute in Site directory,

Dir.chdir “#{SITEPATH}” do
Template="small_business_1" Theme="1" rake assets:precompile
# system("Template=‘small_business_1’ Theme=‘1’ rake
assets:precompile)
end

I have tried this code by putting in controller and lib, but this is not
working.

I have tried with shell script also.

Could please anyone can help me.

kingston.s