ruby on rails - No route matches {:action=>"index", :controller=>"features", :grounddetail_id=>nil} missing required keys: [:grounddetail_id] -

i wanna fetch feature index page without going through grounddetail id. when try create link in homepage error:

no route matches {:action=>"index", :controller=>"features", :grounddetail_id=>nil} missing required keys: [:grounddetail_id]

<%= link_to "account setting", edit_admin_registration_path %> | <%= link_to "log out", destroy_admin_session_path, method: :delete %> | <%= link_to "featured ground", grounddetail_features_path(@grounddetail)  %> # feature link error 

grounddetail controller looks :

class grounddetailscontroller < applicationcontroller    before_action :find_ground, only: [:show, :edit, :destroy, :update]    def index     @grounddetails = grounddetail.all.order('created_at desc')     @grounddetail = grounddetail.first # code run grounddetail id.    end    def new     @grounddetail = grounddetail.new   end    def edit   end    def show   end    def create     @grounddetail = grounddetail.new(ground_params)     if @grounddetail.save       redirect_to @grounddetail     else       render 'new'     end   end    def update     if @grounddetail.update(ground_params)       redirect_to @grounddetail     else       render 'edit'     end   end    def destroy     @grounddetail.destroy     redirect_to root_path   end     private    def find_ground     @grounddetail = grounddetail.find(params[:id])   end    def ground_params     params.require(:grounddetail).permit(:name, :working_hours, :end_time, :address, :contact_no, :email, :number_of_grounds, :description, :featured_ground)   end  end 

feature controller looks :

class featurescontroller < applicationcontroller    before_action :set_ground    def index     @grounddetails = grounddetail.where(featured_ground: true).order("created_at desc")     @features = feature.includes(:grounddetail).where(grounddetail_id: @grounddetail.id)   end    def new     @feature = feature.new   end    def show     @feature = feature.find(params[:id])   end    def edit     @feature = feature.find(params[:id])   end    def create     @feature = feature.create(feature_params)     @feature.grounddetail_id = @grounddetail.id      if @feature.save       redirect_to grounddetail_features_path(@grounddetail)     else       render 'new'     end   end    def update     @feature = feature.find(params[:id])     if @feature.update(feature_params)       redirect_to grounddetail_features_path(@grounddetail)     else       render 'edit'     end   end    def destroy     @feature = feature.find(params[:id])     @feature.destroy     redirect_to grounddetail_features_path(@grounddetail)   end    private    def set_ground     @grounddetail =  grounddetail.find(params[:grounddetail_id])   end    def feature_params     params.require(:feature).permit(:featuring_start_time, :featuring_end_at)   end  end 

models:

grounddetail model:

has_many :features 

feature model:

belongs_to :grounddetail 

index.html.erb #feature index page

<h2>featured ground</h2>  <% @grounddetails.each |grounddetail| %>    name: <%= link_to grounddetail.name, grounddetail %><br>   address: <%= grounddetail.address %><br>   opening hours: from<%= grounddetail.working_hours.strftime("%l:%m %p") %> <%= grounddetail.end_time.strftime("%l:%m %p") %><br>   featured : <%= check_box "grounddetail", "featured ground", {checked: grounddetail.featured_ground, disabled: true} %><br>    <% if (grounddetail.featured_ground = true) && (grounddetail_id = @grounddetail.id) %>     <% @features.each |feature| %>       featuring start time : <%= feature.featuring_start_time.strftime('%e %b %y %l:%m %p') %><br>        <%# feature.start_date_cannot_be_in_the_past %>       featuring end @ : <%= feature.featuring_end_at.strftime('%e %b %y %l:%m %p') %><br>     <% end %>   <% end %>   <%= link_to "add featuring time", new_grounddetail_feature_path(@grounddetail) %><br><br> <% end %> 

routes.rb

resources :grounddetails      resources :features end 

sorry mess up..