html - How to use the same form for creating and editing in ruby on rails -

i new ruby. have same form need perform creation/updation , when required. problem have whenever call edit instead of editing details of existing user, getting new user edited details. put simply, think whenever perform edit, create method being called.

so there way use single form both new , edit instead of using separate forms.

the following code editing user details:

         <%= link_to 'home', root_path %>         <h2>edit user</h2>         <%= form_for :user, url: user_index_path |f| %>           <p>             <%= f.label :name %><br>             <%= f.text_field :name %>           </p>            <p>             <%= f.label :address %><br>             <%= f.text_area :address %>           </p>          <p>             <%= f.label :email %><br>             <%= f.text_field :email %>           </p>           <p>             <%= f.label :phone %><br>             <%= f.text_field :phone %>           </p>           <p>             <%= f.label :state %><br>             <%= f.text_field :state %>           </p>           <p>             <%= f.label :country %>              <%= f.collection_select(:country, country.all, :name, :name) %>           </p>           <p>             <%= f.submit %>           </p>         <% end %> 

the following code creating user:

        <%= link_to 'home', root_path %>     <h2>create new user</h2>     <%= form_for :user, url: user_index_path |f| %>       <p>         <%= f.label :name %><br>         <%= f.text_field :name %>       </p>        <p>         <%= f.label :address %><br>         <%= f.text_area :address %>       </p>      <p>         <%= f.label :email %><br>         <%= f.text_field :email %>       </p>       <p>         <%= f.label :phone %><br>         <%= f.text_field :phone %>       </p>       <p>         <%= f.label :state %><br>         <%= f.text_field :state %>       </p>       <p>         <%= f.label :country %>          <%= f.collection_select(:country, country.all, :name, :name) %>       </p>       <p>         <%= f.submit %>       </p>     <% end %> 

and controller:

      class usercontroller < applicationcontroller     def index         @users = user.all      end      def show     @user = user.find(params[:id])   end      def new         @user = user.new     end       def create     @user = user.new(user_params)         if @user.save             redirect_to @user         else             render 'new'         end      end    def edit      @user = user.find(params[:id])     end      def update     #@user = user.find(params[:id])         if @user.update(user_params)         redirect_to @user     else       render 'edit'     end     end      def destroy     @user = user.find(params[:id])     @user.destroy       redirect_to user_index_path   end      private     def user_params         params.require(:user).permit(:name, :address, :email, :phone, :state, :country)     end  end 

since new ruby, did not exact details of how http requests function in ruby.

users/_form.html.erb

  <%= link_to 'home', root_path %>   <%= form_for @user |f| %>   <p>   <%= f.label :name %><br>   <%= f.text_field :name %>   </p>    <p>   <%= f.label :address %><br>   <%= f.text_area :address %>   </p>   <p>   <%= f.label :email %><br>   <%= f.text_field :email %>   </p>    <p>   <%= f.label :phone %><br>   <%= f.text_field :phone %>   </p>   <p>   <%= f.label :state %><br>   <%= f.text_field :state %>   </p>   <p>   <%= f.label :country %>    <%= f.collection_select(:country, country.all, :name, :name) %>   </p>   <p>   <%= f.submit %>   </p>   <% end %> 

users/new.html.erb

<h2>create new user</h2> <%= render 'form' %> 

users/edit.html.erb

<h2>edit user</h2> <%= render 'form' %> 

users_controller.rb

class userscontroller < applicationcontroller   before_filter :find_user, only: [:show, :edit, :update, :destroy]   def index     @users = user.all   end    def show       end    def new     @user = user.new   end    def create     @user = user.new(user_params)     if @user.save       redirect_to @user     else       render 'new'     end    end    def edit   end    def update     if @user.update(user_params)       redirect_to @user     else       render 'edit'     end   end    def destroy     @user.destroy     redirect_to user_index_path   end    private   def user_params     params.require(:user).permit(:name, :address, :email, :phone, :state, :country)   end    def find_user     @user = user.find(params[:id])   end  end 

when have same view code 2 or more methods, should create partial of same view code , render in methods. called dry principle in ruby on rails