If you're going to follow Rails convention, go back to author_id.
Through AR magic, when you say "book belongs to author," it
automagically gives some methods to your book model. One of those is
"author" which it expects to return a Author model object found using
the author_id attribute as a foreign key. That's why you're getting
the mismatch error. I'm assuming when it's author_id, that field is
not going to show up in scaffolding b/c rails knows that's a
foreign_key and not a regular attribute (like name or title or
something).
Going back to the original issue, did you try my suggestion on the
form_for syntax? The doc examples show passing both the symbol and
instance variable like this:
form_for :book, :@books, :url => { :action => 'create' } do |form|
On Feb 22, 2007, at 10:56 AM, Kevin Burk wrote:
Thank you for the replies-I don't think I'm being clear about the
core problem, though.
I have no need for anything more flexible than the scaffold for
this-it's an admin-only data entry form. I'm also very new at this,
so abstract advice and code snippets don't help me because I have
no context for them.
What I need is simply this:
A form that writes to the BOOKS table that includes an integer
field for "author_id" (or simply "author" - see below). I can
pretty it up with a select field of author names later. The BASIC
function of the form still doesn't work.
The problem DOES seem to be with the _id extension of the field.
When I rebuild the table and rename the field "author" instead of
"author_id" the field shows up correctly in the scaffold form.
HOWEVER, now, I can't write to the table because I get an error of
"Association TypeMismatch" in the BooksController: Author
expected, got String
I think the issue is that the text field for "author" is not
sending as an integer, which is what the "author" field in the
database is. Actually, I'm sure of this, because in the session
dump the request parameters show:
"author" => "1" when it SHOULD show "author" => 1
How can I fix this?
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