Originally posted this to the pragmatic studio list. No response there,
so I’m giving it a shot here.
I’m working on my first post-class Rails app - a rewritten replacement
for
a link-collection site. Right now, it’s a very basic setup with a
Categories table (acts_as_tree), and a Links table. Table and foreign
keys appear to be set up fine. I generated a scaffold and did some
minor
modification. Categories has_many :links, and Links belongs_to
:category.
I’ve got a helper function that generates a select() statement like
select(:link, :category). That creates HTML that looks like:
And the option value is the numeric category id number.
When I submit the form, I get an ActiveRecord error that reads:
Category expected, got String
In the request parameters, I see I’m getting “category” => “8”. I
assume
it’s expecting a Category object instead of just the string “8”. In my
scaffold-built controller, the create method is doing the stock:
@link = Link.new(params[:link])
@link.save
Does the scaffold not handle this type of interaction by default? Do I
need to change that to do something like a @category =
Category.find(params[:category]), and replace the value for “category”
in
the hash with that object? What’s the scoop on how to make those two
classes happy with each other?
–Wade
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