TypeError in InvoicesController#show_client_invoices

application trace

app/controllers/invoices_controller.rb:3:in `[]'
app/controllers/invoices_controller.rb:3:in `show_client_invoices'

index.html.erb

            <% @clients.each do |c| %> 
                <li><%= link_to c.name, show_client_invoices_invoices_path(:invoice => "1", :company_id  => "#{c.id}")%></li>
          <% end %>

rake routes

show_client_invoices_invoices GET    /invoices/show_client_invoices(.:format)                                                    invoices#show_client_invoices

routes.rb

  def show_client_invoices
    if params[:invoice][:company_id] != ""
      @company = Client.find(params[:invoice][:company_id])
      @invoice_reservations = @company.invoice_reservations
      render :partial => 'client_reservations', :content_type => 'text/html'
    end
  end