observe_field in a rails 2.2.2 app is not saving checkbox value

I have the following form in a rails app which is not working:

<% form_remote_for :team  do |f| %>
  <tr>
    <% 1.upto(12) do |i| %>
      <td>
        <%= f.check_box @mo[i] %>
        <%= observe_field 'team_' + @mo[i], 
          :method => :put,
          :with => "$(@mo[i] + '=开发者_如何学编程') + $('team_'+@mo[i]).value" %>
      </td>
    <% end %>
  </tr>
<% end %>

@mo[i] is the name of the field in the database (e.g. jan, feb, mar,... dcm). The code would look like this if i were to write them all out:

<% form_remote_for :team  do |f| %>
  <tr>
    <td>
        <%= f.check_box :jan %>
        <%= observe_field 'team_jan', 
          :method => :put,
          :with => "'jan=' + $('team_jan').value"
    </td>
    ...
  </tr>
<% end %>

Thanks for your help.

Your :with statements has some syntax problems, and you are also not interpolating your ruby variables correctly. Try this:

  :with => "'#{@mo[i]}=' + $('team_#{@mo[i]}').value"

I derived this by taking your intended output 'jan=' + $('team_jan').value and replacing all instances of jan with #{@mo[i]}, which is the way to interpolate your variable that contains the month name.

Also, you probably need to add a :url option to tell where your ajax call should be sent. Something like this:

<%= observe_field 'team_jan',
        :url => team_path(@team),
        :method => :put,
        :with => "'#{@mo[i]}=' + $('team_#{@mo[i]}').value" %>

I am guessing here that your desired endpoint is team_path(@team), but replace it if it is not.