check_box fields with validation errors don't render with the correct error html about bootstrap_form

[potenza]

@desheikh I apologize, I made a mistake. I completely blanked that check boxes need to be wrapped in a form group to render the error properly:

<%= f.form_group :terms, label: { text: "Optional Label" } do %>
  <%= f.check_box :terms do %>
    You need to check this box to accept our terms of service and privacy policy
  <% end %>
<% end %>

[potenza]

@desheikh Thanks. The checkbox error handling seems to be non-existent. After looking at how Bootstrap defines the .has-error class, I think we might need to wrap the checkbox container inside another with the .has-error class. We also need to pull the error message into a help-block.

[desheikh]

@potenza yup, havn't had time yet, but I'll try and submit a PR soon.

[potenza]

@desheikh I was wondering if you had a chance to look at this yet? Let me know if you're too busy and I'll try to dig in later this week. I just don't want to duplicate the effort if you've already started. Thanks.

[desheikh]

@potenza, If you can push out a fix earlier that'd be great. I havn't really had much time than take a cursory look. It might just be simpler to have a separate method to wrap radio_button and check_box tag, because the required markup is very different from what form_group generates.

[desheikh]

@potenza thanks, I'll keep that in mind when I get back to the bootstrap3 upgrade branch I've been neglecting for a while now.