Rails - Saving two related models through nested forms -

i have 2 models 1 user, , userprofile. userprofile belongs user, , user has 1 userprofile. when user signup 1 form collecting information , information goes 2 different models. cant seem achieve this. used accepts_nested_attributes_for :user_profile on user model. still user model gets saved not userprofile view:

   <%= form_for(@user) |f| %>      <%= render 'shared/error_messages' %>        <%= f.label :name %>        <%= f.text_field :name, class: 'form-control'%>          <%= f.label :email %>        <%= f.email_field :email, class: 'form-control'%>          <%= f.label :password %>        <%= f.password_field :password, class: 'form-control'%>          <%= f.label :password_confirmation, "confirmation" %>        <%= f.password_field :password_confirmation, class: 'form-control'%>         <h3> profile information</h3>          <%= f.fields_for @user.user_profile |profile_form| %>              <%= profile_form.label :age %>              <%= profile_form.text_field :age, class: 'form-control' %>              <%= profile_form.label :height %>              <%= profile_form.text_field :height, class: 'form-control' %>              <%= profile_form.label :contact %>              <%= profile_form.text_field :contact, class: 'form-control'%>              <%= profile_form.label :city %>              <%= profile_form.text_field :city, class: 'form-control'%>              <%= profile_form.label :state %>              <%= profile_form.text_field :state, class: 'form-control'%>              <%= profile_form.label :batting_style %>              <%= profile_form.text_field :batting_style, class: 'form-control'%>              <%= profile_form.label :bowling_style %>              <%= profile_form.text_field :bowling_style, class: 'form-control'%>              <%= profile_form.label :favorite_players %>              <%= profile_form.text_field :fav_players, class: 'form-control'%>              <%= profile_form.label :favorite_team %>              <%= profile_form.text_field :fav_team, class: 'form-control'%>      <% end %>          <br>          <%= f.submit "create account", class: "btn btn-primary" %>      <% end %>

my users controller

  def new     @user = user.new     @user_profile = @user.build_user_profile   end    def show     @user = user.find(params[:id])     @user_profile = @user.user_profile   end    def create     @user = user.new(user_params)      if @user.save       @user.build_user_profile       @user.send_activation_email       flash[:info] = "please check email activate account."       redirect_to root_url     else       render 'new'     end   end    def user_params      params.require(:user).permit(:name, :email, :password, :password_confirmation, user_profile_attributes: [:age, :contact, :height, :city, :state, :batting_style, :bowling_style, :fav_team, :fav_players])   end 

application log:

started post "/users" ::1 @ 2015-03-31 14:38:58 -0400 processing userscontroller#create html   parameters: {"utf8"=>"✓", "authenticity_token"=>"tafzck9+l0ksbmsz8oeosqp5vbrfyfvz3rr5/tkkw3dr16+h2xr1m8itt+zjvigzpan4lichfhprix81lf6wna==", "user"=>{"name"=>"test user", "email"=>"testuser@gmail.com", "password"=>"[filtered]", "password_confirmation"=>"[filtered]", "user_profile"=>{"age"=>"29", "height"=>"5 feet 4 inches", "contact"=>"888-888-8888", "city"=>"philadelphia", "state"=>"pa", "batting_style"=>"right hand", "bowling_style"=>"right arm", "fav_players"=>"test", "fav_team"=>"test"}}, "commit"=>"create account"} unpermitted parameter: user_profile    (0.1ms)  begin transaction   user exists (0.1ms)  select  1 one "users" lower("users"."email") = lower('testuser@gmail.com') limit 1   sql (1.6ms)  insert "users" ("name", "email", "password_digest", "created_at", "updated_at", "activation_digest") values (?, ?, ?, ?, ?, ?)  [["name", "test user"], ["email", "testuser@gmail.com"], ["password_digest", "$2a$10$lsy8evtzj0cngup1wlizn.dolrbu1qyg8w/duhdo77ymkh099.ooa"], ["created_at", "2015-03-31 18:38:58.699583"], ["updated_at", "2015-03-31 18:38:58.699583"], ["activation_digest", "$2a$10$y7icb2vojztexisd.vkyzowxs55w.fiyz56agyd028s49i1j9r3su"]]    (0.8ms)  commit transaction   userprofile load (0.5ms)  select  "user_profiles".* "user_profiles" "user_profiles"."user_id" = ? limit 1  [["user_id", 120]]   rendered user_mailer/account_activation.html.erb within layouts/mailer (0.4ms)   rendered user_mailer/account_activation.text.erb within layouts/mailer (0.1ms) 

trying different ways: still no luck

     def create     @user = user.new(user_params)     @user_profile = @user.build_user_profile(params[:user][:user_profile])     if @user.save       @user.send_activation_email       flash[:info] = "please check email activate account."       redirect_to root_url    else       render 'new'    end   end