rails - select all checkboxes inside a div before submitting form - ruby-on-rails

Question

I have a new batch form where user can select books from a div using the checkbox and click on a button to put them in another div which represents the selected books.
It works a bit like a listbox where user can move items between the different boxes except that here am using checkbox and div.
I have done the moving of books from one div to another using jquery.
See code below:
<% form_for #batch do |f| %>
<label style="width: 150px">Batch Name:</label><%= f.text_field :BAT_BATCH_NAME %>
<div id="all_books">
<% #books.each do |book| %>
<div id="book<%= book.BK_OID %>" bookid="<%= book.BK_OID %>" class="innertxt">
<ul>
<li>Book ID: <%= book.BK_OID %></li>
<li>Name: <%= book.BK_NAME %></li>
<li>
<input type="checkbox" name="batch[book_ids][]" id="select<%= book.BK_OID %>" value=<%= book.BK_OID %> class="selectit" />
</li>
</ul>
</div>
<% end %>
<div style="width:100px; text-align:center; margin-left:20px; padding-top: 100px; width:75px; float:left;">
Right »<br /><br />
« Left
</div>
<div id="selected_books"> </div>
<br/><br/>
<%= f.submit 'Update Batch Details' %>
<% end %>
Currently, only the selected books are saved, whether they are found in the 'all_books' div or 'selected_books' div.
However, I want all entries in the 'selected_books' div to be submitted when saving the batch, whether their checkboxes have been checked or not. and ignore all selected entries in the 'all_books' div.
In short, when saving the batch, i want to save only those books found in the 'selected_books' div and ignore the rest whether their checkboxes have been checked or not.
I hope i was clear enough.
I would be really grateful if someone could point me the right direction on how to do that.
Many many thanks for any suggestion provided.

Answer 1

$("#formid").submit(function(){ $("#selected_books").find("input:checkbox").attr({checked: "checked"}); });
That should do the trick.