Rails - Oct 2008 - ActiveRecord::AssociationTypeMismatch - unsure how to proceed

I''m creating a practice app on RoR, but i''ve run into this
problem and
I''m not sure how to proceed.  Basically, its a stock picker, and there
are Portfolios, Stocks, and Holdings.   Holdings belong to both
Portfolios and a particular Stock.

In my "create holding" page, i''m allowing the user to provide
a Stock
symbol (a string column in the stock table) and a quanity.  However,
for obvious reasons this doesnt work as when the form is submitted,
this line:

@holding = Holding.new(params[:holding])

Expects the value of "stock" that is passed in to be an actual Stock
object, not a string representing the symbol for that stock.

How exactly should I get around this without converting the Stock
field to a dropdown?

Thanks!

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On 27 Oct 2008, at 22:44, Lawrence Lu wrote:
>
> I''m creating a practice app on RoR, but i''ve run into
this problem and
> I''m not sure how to proceed.  Basically, its a stock picker, and
there
> are Portfolios, Stocks, and Holdings.   Holdings belong to both
> Portfolios and a particular Stock.
>
> In my "create holding" page, i''m allowing the user to
provide a Stock
> symbol (a string column in the stock table) and a quanity.  However,
> for obvious reasons this doesnt work as when the form is submitted,
> this line:
>
> @holding = Holding.new(params[:holding])
> Expects the value of "stock" that is passed in to be an actual
Stock
> object, not a string representing the symbol for that stock.
>
change params[:holding][:stock] before you pass it to Holding.new

Fred

> How exactly should I get around this without converting the Stock
> field to a dropdown?
>
> Thanks!
>
> >

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