Ruby on Rails

Have a look at this page, at the "gotcha" around multiple => true.

http://apidock.com/rails/ActionView/Helpers/FormHelper/check_box#note_info-1001

Walter

On Sep 30, 2013, at 7:16 AM, Jon Goodey wrote:

> A quick question I have working with a object in a rails 3 app and I
> would like to retain the checkboxes ticked (for example there are 3
> options if someone chooses option 1 and 2 and refreshes the page the
> checkboxes 1 and 2 will remain ticked), this is very easy with radio
> buttons but I am still trying to get my head around it with checkboxes.
>
> here is some code:
>
> <%= form_for(@user, :remote => true) do |f| %>
>
> <%= f.check_box :a1, {:multiple => true}, "1", "" %>
> <%= f.check_box :a1, {:multiple => true}, "2", "" %>
> <%= f.check_box :a1, {:multiple => true}, "3", "" %>
> <%= f.submit %>
> <% end %>
> <%= @user.a1.inspect %>
> output from the inspect element:
>
> "---\n- ''\n- '1'\n- ''\n- '2'\n- ''\n"
> the user model has the a1 as a string in the db.
>
> thanks in advance if anyone can help ,e
>
> Regards Jon
>
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