gistfile1.txt

CONTROLLER:

  def edit_multiple
    @on_calls = OnCall.find(params[:on_call_ids])
  end

  def update_multiple
    @on_calls = OnCall.find(params[:on_call_ids])
    @on_calls.each do |on_call|
      on_call.update_attributes!(params[:on_call].reject {|k,v| v.blank?})
    end
    flash[:notice] = "Uddated on call scheduling!"
    redirect_to on_calls_path
  end

================================================================

VIEW:

<% title "Create On Call Schedule" %>

<p>
<em>Note:</em> Either administer your team's on call schedule here, n shifts at a time, or create on_call records in the on_call object directly (<%= link_to "here", on_calls_path %>).  You should not do both.
</p>

<p>
For the <%= @team.name %> Team, each on call shift is <%= @team.shift_length %>.  You will be configuring <%= @team.plan_length %> shfts for each specialization in your team.  To change these values, edit the On Call team record, <%=link_to "here", @team %>.
</p>

<% form_tag edit_multiple_on_calls_path do %>

<table>
  <tr><th>Name</th><th>Start Date<br />(after 8:00am)</th><th>End Date<br />(until 8:00am)</th><th>Engineer</th></tr>
<% for o in @on_calls %>
  <% fields_for "on_calls[]", o do |f| %>
    <tr>
      <td><%= link_to o.name, o %></td>
      <td><%= o.start_date %></td>
      <td><%= o.end_date %></td>
      <td><%= collection_select(:on_call, :engineer_id, @engineers, :id, :name, {:prompt => true}) %></td>
  <% end %>
<% end %>
</table>

<p><%= submit_tag "Submit" %></p>

<% end %>
=================================================================

ERROR:

Processing OnCallsController#edit_multiple (for 172.25.50.65 at 2011-03-02 14:47:15) [POST]
  Parameters: {"on_call"=>{"engineer_id"=>"6"}, "commit"=>"Submit", "authenticity_token"=>"secret"}
  User Load (0.4ms)   SELECT * FROM `users` WHERE (`users`.`id` = 2) LIMIT 1
  User Columns (0.8ms)   SHOW FIELDS FROM `users`
  OnCallTeam Load (0.2ms)   SELECT * FROM `on_call_teams`
  OnCallTeam Columns (0.3ms)   SHOW FIELDS FROM `on_call_teams`

ActiveRecord::RecordNotFound (Couldn't find OnCall without an ID):
  app/controllers/on_calls_controller.rb:60:in `edit_multiple'