collection_select help

Hi,
I'm new at this.. can you please help me..
the drop down menus are fine, however when i click submit the
selection is not saved and it tells me that movie and type can't be
blank

Here is my movie_types controller
class MovieTypesController < ApplicationController
before_filter :login_required, :only => [:new, :create]

  # GET /movie_types
  # GET /movie_types.xml
  def index
    @movie_types = MovieType.find(:all)

    respond_to do |format|
      format.html # index.html.erb
      format.xml { render :xml => @movie_types }
    end
  end

  # GET /movie_types/1
  # GET /movie_types/1.xml
  def show
    @movie_type = MovieType.find(params[:id])

    respond_to do |format|
      format.html # show.html.erb
      format.xml { render :xml => @movie_type }
    end
  end

  # GET /movie_types/new
  # GET /movie_types/new.xml
  def new
    @movie_type = MovieType.new

    respond_to do |format|
      format.html # new.html.erb
      format.xml { render :xml => @movie_type }
    end
  end

  # GET /movie_types/1/edit
  def edit
    @movie_type = MovieType.find(params[:id])
  end

  # POST /movie_types
  # POST /movie_types.xml
  def create
    @movie_type = MovieType.new(params[:movie_type])

    respond_to do |format|
      if @movie_type.save
        flash[:notice] = 'MovieType was successfully created.'
        format.html { redirect_to(@movie_type) }
        format.xml { render :xml => @movie_type, :status
=> :created, :location => @movie_type }
      else
        format.html { render :action => "new" }
        format.xml { render :xml => @movie_type.errors, :status
=> :unprocessable_entity }
      end
    end
  end

  # PUT /movie_types/1
  # PUT /movie_types/1.xml
  def update
    @movie_type = MovieType.find(params[:id])

    respond_to do |format|
      if @movie_type.update_attributes(params[:movie_type])
        flash[:notice] = 'MovieType was successfully updated.'
        format.html { redirect_to(@movie_type) }
        format.xml { head :ok }
      else
        format.html { render :action => "edit" }
        format.xml { render :xml => @movie_type.errors, :status
=> :unprocessable_entity }
      end
    end
  end

  # DELETE /movie_types/1
  # DELETE /movie_types/1.xml
  def destroy
    @movie_type = MovieType.find(params[:id])
    @movie_type.destroy

    respond_to do |format|
      format.html { redirect_to(movie_types_url) }
      format.xml { head :ok }
    end
  end
end

view: new.html
<h1>New movie_type</h1>

<%= error_messages_for :movie_type %>

<% form_for(@movie_type) do |f| %>
  <p>
    <b>Type</b><br />
<%= collection_select(:type, :type_id, Type.find(:all), :id, :name)%>
  </p>

  <p>
    <b>Movie</b><br />
<%= collection_select(:movie, :movie_id, Movie.find
(:all), :id, :title) %>
  </p>

  <p>
    <%= f.submit "Create" %>
  </p>
<% end %>

<%= link_to 'Back', movie_types_path %>

thank you

Hi,
I'm new at this.. can you please help me..
the drop down menus are fine, however when i click submit the
selection is not saved and it tells me that movie and type can't be
blank

Like the other hellers, the first parameter should be the name of the
instance variable, ie 'movie_type' in your case. Or, since you are
using form_for, you could use f.collection_select and drop the first
parameter altogether.

Fred

Thaaaaaaaaaaaaank you =D its working now