ruby on rails - Getting a "NoMethodError in Boards#show" error when going to #new action (not trying to access a method, and the variable exists) -

i'm new ruby on rails, forgive if stupid mistake.

i used rails generate scaffold command generate "board" scaffold title:string , message:text. now, i'm trying go localhost:3000/boards/new , i'm getting "nomethoderror in boards#show" error when try access board.message. don't get error when try access board.title.

code:

form.html.erb

<%= form_for(@board) |f| %>   <% if @board.errors.any? %>     <div id="error_explanation">       <h2><%= pluralize(@board.errors.count, "error") %> prohibited board being saved:</h2>        <ul>       <% @board.errors.full_messages.each |msg| %>         <li><%= msg %></li>       <% end %>       </ul>     </div>   <% end %>    <div class="field">     <%= f.label :title %><br />     <%= f.text_field :title %>   </div>   <div class="field">     <%= f.label :message %><br />     <%= f.text_area :message %>   </div>   <div class="actions">     <%= f.submit %>   </div> <% end %> 

i'm getting error on line 20 (<%= f.text_area :message %>)

board.rb

class board < activerecord::base   attr_accessible :message, :title   has_many :posts end 

*boards_controller.rb*

class boardscontroller < applicationcontroller   # /boards   # /boards.json   def index     @boards = board.all      respond_to |format|       format.html # index.html.erb       format.json { render json: @boards }     end   end    # /boards/1   # /boards/1.json   def show     @board = board.find(params[:id])      respond_to |format|       format.html # show.html.erb       format.json { render json: @board }     end   end    # /boards/new   # /boards/new.json   def new     @board = board.new      respond_to |format|       format.html # new.html.erb       format.json { render json: @board }     end   end    # /boards/1/edit   def edit     @board = board.find(params[:id])   end    # post /boards   # post /boards.json   def create     @board = board.new(params[:board])      respond_to |format|       if @board.save         format.html { redirect_to @board, notice: 'board created.' }         format.json { render json: @board, status: :created, location: @board }       else         format.html { render action: "new" }         format.json { render json: @board.errors, status: :unprocessable_entity }       end     end   end    # put /boards/1   # put /boards/1.json   def update     @board = board.find(params[:id])      respond_to |format|       if @board.update_attributes(params[:board])         format.html { redirect_to @board, notice: 'board updated.' }         format.json { head :no_content }       else         format.html { render action: "edit" }         format.json { render json: @board.errors, status: :unprocessable_entity }       end     end   end    # delete /boards/1   # delete /boards/1.json   def destroy     @board = board.find(params[:id])     @board.destroy      respond_to |format|       format.html { redirect_to boards_url }       format.json { head :no_content }     end   end end 

routes.rb

anonymous::application.routes.draw    resources :boards     resources :posts    root :to => "boards#index"  end 

can please explain me?