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

This is the expected behaviour of check_box_tag, as this comment on a rejected fix explains.

You can use collection_check_boxes like this (haml syntax, sorry):

# Accumulate todos in a params hash like { todos: { to_complete: [] } }
= collection_check_boxes(:todos, :to_complete, @incomplete_todos, :id, :name) do |todo_builder|
  = todo_builder.label do
    # This is the result of calling :name on the todo, as specified
    # calling the helper
    = todo_builder.text
    = todo_builder.check_box

Of course you can use partials inside the block, just pass and use the builder inside.

Check more options in the API docs.