On Viernes, 11 de Septiembre de 2009 06:32:19 Soren Christensen escribió:
> Hi,
>
> I have an application where I need to select the recipients of an e-mail.
> I do this using a combination of the following:
>
> - a checkbox to deliver to all
> - a multiple select to select a set of groups
>
> This is currently done with AS - Wondering if this is the best solution.
>
> 3 questions:
>
> 1) I use this to build the multiple select boxes. They store their
> values fine in the database, but nothing is selected when I edit them.
> Has anybody gotten this to work correctly:
>
> def klass_ids_form_column(record, input_name)
> select_tag("record[klass_ids][]",
> options_for_select(Klass.find(:all).sort { |a,b|
> a.name.casecmp(b.name)}.collect {|p| [ p.to_label, p.id ] },
> record.klass_ids.collect { |cr| cr.id}), {:multiple=>true,
> :size=>6}) end
>
> 2) Rather than having a multiple select box I would like a set of check
> boxes. Much more obvious user interface
>
> is there a simple way to do this ?
recipients is an association? ActiveScaffold has builtin functionality for
showing checkboxes in has_many or habtm associations.
> or can the code in 1) be converted like:
>
> def klass_ids_form_column(record, input_name)
>
> Klass.find(:all).sort { |a,b| a.grade <=> b.grade}.each do |kl|
> check_box_tag("record[klass_ids][]", "#{kl.id}",
> record[klass_ids].include?(kl.id))
> end
> end
>
> 3) And for the really nice version:
> Make 2) work, but use AJAX to show/remove the second level of checkboxes
> - they are only shown if all is not checked.
You can add a onclick method to the checkbox, in that function hide the
element which has the checkboxes, and uncheck all the checkboxes, when it's
checked, and show that element when it's unchecked.
--
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