On Mar 18, 2011, at 2:38 PM, Mark Sobkowicz wrote:
> I'm trying to add a little jQuery magic to my hobo app. I watched Ryan
> Bates' lovely screencast (#213) on calendars, and got to work. I got it to
> work, as long as there is already a date in the field. Here is some form
> code:
>
> <form merge param="default">
>
> <error-messages param/>
> <p><b>Customer </b>
> <b><input:customer/></b></p><br/>
> <p><b>Start Date </b>
> <b><input:start_date type="text" size="20" class="datepick"
> value='&this.start_date.strftime("%m/%d/%Y")'/></b></p><br/>
> <p><b>End Date <input:end_date type="text" size="20" class="datepick"
> value='&this.end_date.strftime("%m/%d/%Y")'/></b></p><br/>
>
>
>
> Typically, there is a start_date but no end_date. When I use this form on
> the "edit" page with the end date commented out, it works! When the end date
> input is left in, I get the message:
>
> undefined method `strftime' for nil:NilClass
>
> on the end_date input.
>
> I put
>
> attr_accessor :end_date, :type => :date
>
> in my Rental model, but it still doesn't work.
Correct, since the value's still nil. :)
In any case, this is a great spot to use _?:
this.end_date._?.strftime("%m/%d/%Y")
will only do the strftime if the value isn't nil.
--Matt Jones
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