## form

<div class="formp border">
	<label class="left">Height</label>
	<%= select :player, :feet, 1..7, {:include_blank => true} %> feet
	<%= select :player, :inches, 1..11, {:include_blank => true} %> inches
</div>

## player_controller

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

## player model

before_update :convert_height

def convert_height
    self.height = ((feet.to_f * 30.48.to_f) + (inches.to_f * 2.54.to_f)).to_f
  end

# returns linked name to name field
def name
    name = [ firstname, middlename, lastname ].compact.join(" ")
  end

# calculates feet from cm and shows it in select box
  def feet
    find_feet = self.height.to_f / 30.48.to_f
    @feet = find_feet.to_i
  end

# calculates inches from remainder and shows it in select box
  def inches
    find_inches = (self.height.to_f - (30.48.to_f * feet))
    calc_cm = find_inches.to_f / 2.54.to_f
    @inches = calc_cm.to_i
  end