ruby on rails - Attributes sent from link_to to create action is not saved -

i have following link_to in index.html.erb. whenever click on link, create new record in retrieval_requests table reason user_id , package_id not saved.

i'm not sure on how go this. appreciate help.

thanks.

index.html.erb

. . <%= link_to "retrieve package", retrieval_requests_path(user_id: current_user.id, package_id: item.package.id), :method => :post %> . . 

retrieval_requests_controller.rb

class retrievalrequestscontroller < applicationcontroller   def index       @items = item.where(:user_id => current_user.id)   end    def create     @retrieval_request = retrievalrequest.new(params[:retrieval_request])     if @retrieval_request.save       redirect_to retrieval_requests_path, notice: "successfully created retrieval request."     else       render :new     end   end end 

since you're using link , not form, you're going have create record individual params.

so instead of using params[:retrieval_request] (which don't exist), use params[:user_id] , params[:package_id].

when pass parameters link helper, such as:

retrieval_requests_path(user_id: 3, package_id: 26) 

it create url looks following, depending on how set routes:

"/retrieval_requests/3/26" # or no user_id or package_id set in routes: "/retrieval_requests?user_id=3&package_id=26" 

then in controller need grab params separately.