ruby on rails - NoMethodError when using paperclip for nested resource -

hi pretty new rails, , managed few classes working until tried use paperclip.

everything works fine until try upload picture. error:
undefined method `business_locations_path' #<#:0x4eecc88>

these 2 models:

class business < activerecord::base  attr_accessible :bizname, :contact, :email, :ownername, :signupdate, :website  has_many :businesslocations end  class businesslocation < activerecord::base   belongs_to :business   attr_accessible :address1, :address2, :contact, :description, :email, :latitude,  :longitude, :postal, :price, :mainpic   has_attached_file :mainpic, :styles => {:large => "640x640>", :medium => "320x320>", :thumb => "100x100>"} end 

to create new location, path like:

http://localhost:3000/businesses/8/businesslocations/new 

the form:

<%  if params[:action] == "new" urlpath = business_businesslocations_path(@business)  else if params[:action] == "edit"     urlpath = business_businesslocation_path(@business,@businesslocation) end  end %> <%= form_for @businesslocation, :url=>urlpath,  :html =>{ :multipart => true } |f|   %>  ...  <div class="field"> <%= f.label :mainpic %><br /> <%= f.file_field :mainpic %>  </div> 

the businesslocation controller:

def create     respond_to |format|         @business = business.find(params[:business_id])          @businesslocation = @business.businesslocations.build(params[:business_location])         if @businesslocation.save             format.html  { redirect_to(business_businesslocation_path(@business,@businesslocation),                         :notice => 'post created.') }           format.json  { render :json => @businesslocation,                         :status => :created, :location => @business }         else           format.html  { render :action => "new" }           format.json  { render :json => @businesslocation.errors,                         :status => :unprocessable_entity }         end     end end 

there no such path business_locations_path because businesslocation nested in business.

edit: here rake routes:

    business_businesslocations        /businesses/:business_id/businesslocations(.:format) businesslocations#index                                    post       /businesses/:business_id/businesslocations(.:format) businesslocations#create      new_business_businesslocation   /businesses/:business_id/businesslocations/new(.:format)       businesslocations#new     edit_business_businesslocation   /businesses/:business_id/businesslocations/:id/edit(.:format)  businesslocations#edit  business_businesslocation     /businesses/:business_id/businesslocations/:id(.:format)       businesslocations#show                            put        /businesses/:business_id/businesslocations/:id(.:format)       businesslocations#update                            delete     /businesses/:business_id/businesslocations/:id(.:format)       businesslocations#destroy                 businesses        /businesses(.:format)                      businesses#index                            post       /businesses(.:format)                      businesses#create               new_business        /businesses/new(.:format)                      businesses#new              edit_business        /businesses/:id/edit(.:format)                      businesses#edit                   business        /businesses/:id(.:format)                      businesses#show                            put        /businesses/:id(.:format)                      businesses#update                            delete     /businesses/:id(.:format)                      businesses#destroy 

in controller, have create action set redirect business_businesslocation_path. autogenerated whatever used genereate nested scaffold. fixing fix problems.