Rails create new records based on checked records - ruby-on-rails

Question

I have a table showing time entries (events) related to a workorder.
The user can enter a check on any of the table rows.
For each checked row, I want to create a new record in the invtime table.
invtime belongs_to :event
event has_many :invtimes
This is the table:
<table>
<thead>
<tr>
<th>Title</th>
<th>Employee</th>
<th>Date</th>
<th>Hours</th>
<th>Actions</th>
</tr>
</thead>
<tbody>
<% Event.where("workorder_id = ?", Invoice.find(#invoice).workorder_id).where("billed = ?", false).each do |event| %>
<tr>
<td><%= check_box_tag(:add_record) %></td>
<td><%= event.title %></td>
<td><%= event.employee.employee_full_name %></td>
<td><%= event.starts_at.strftime("%m/%d/%Y") %></td>
<td><%= event.hours %></td>
<td></td>
</tr>
<% end %>
</tbody>
</table>
I'm not sure how to process the returned page with the checkboxes checked.
Should I use Javascript (coffeescript)? Or can I do it with Ruby?

Answer 1

This should do it:
<tbody>
<%= form_tag(your_path_helper) do %>
<% Event.where("workorder_id = ?", Invoice.find(#invoice).workorder_id).where("billed = ?", false).each do |event| %>
<tr>
<td><%= check_box_tag 'event_ids_to_save[]', value: event.id, checked: Invtime.exists?(event_id: event.id) %></td>
<td><%= event.title %></td>
<td><%= event.employee.employee_full_name %></td>
<td><%= event.starts_at.strftime("%m/%d/%Y") %></td>
<td><%= event.hours %></td>
<td></td>
</tr>
<% end %>
<tr><td colspan='6'><%= submit_tag %></td></tr>
<% end %>
</tbody>
The corresponding action of the controller responding to the form_tag submit:
def action_of_the_form_tag
params[:event_ids_to_save].each do |event_id|
event = Event.where(id: event_id)
# do your logic here
end
end