How do I set a unique ID for checkboxes in a multi-record Rails form?

Question

I\'ve set up a Rails form roughly following the instructions in this Railscast.

Here\'s the code for the form:

<% form_tag complete_todos_path, :m         


        

Answer 1

I ended up using a solution similar to Ryan's, but as I wrote in the comment I had to make a further change. In the form:

<%= check_box_tag "todo_ids[#{todo.id}]", todo.id %>

In the action called by the form:

Todo.update_all(["completed_at = ?", Time.now], :id => params[:todo_ids].keys)

Note the "params[:todo_ids].keys" at the end, which was a workaround to deal with the odd way the parameters were formatted:

"todo_ids" => {"5"=>"5"}