class AdminController < ApplicationController
  def index
    @admin = Customer.find(:all)

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

  def edit
    @admin = Customer.find(params[:id])
  end
end

**********

<h1>Editing <%=h @admin.first_name %></h1>

<% form_for(@admin) do |f| %>
  <%= f.error_messages %>

  <p>
    <%= f.label :first_name %><br />
    <%= f.text_field :first_name %>
  </p>
  <p>
    <%= f.label :last_name %><br />
    <%= f.text_area :last_name %>
  </p>
  <p>
    <%= f.submit 'Update' %>
  </p>
<% end %>


******THE ERROR******
NoMethodError in Admin#edit

Showing app/views/admin/edit.html.erb where line #3 raised:
line 3: <% form_for(@admin) do |f| %>

undefined method `customer_path' for #<ActionView::Base:0x2319848>