This should be a really simple thing, I just haven't figured out how to
do it yet....
I have two models with a has_many, :through => relationship:
class Source < ActiveRecord::Base
has_many :authorships
has_many :authors, :through => :authorships
class Author < ActiveRecord::Base
has_many :authorships
has_many :sources, :through => :authorships
class Authorship < ActiveRecord::Base
belongs_to :source
belongs_to :author
I'm not sure how to create a form for this. My sources/new form has a
nested form for authorship that currently looks like this (I'm following
the instructions Ryan Bates gives in _Advanced Rails Recipes_ for
dealing with multiple models in one form):
<div class="authorship">
<% new_or_existing = authorship.new_record? ? 'new' : 'existing' %>
<% prefix = "source[#{new_or_existing}_authorship_attributes][]" %>
<% fields_for prefix, authorship do |authorship_form| %>
<p>
<%= authorship_form.text_field :author_id %>
<%= link_to_function "remove", "$(this).up('.authorship').remove()" %>
</p>
<% end %>
</div>
This works just fine, and saves the data just fine, but obviously I
would like to be able to type in author.name instead of :author_id. I
would also be happy to use collection_select here, but haven't been able
to figure out how to do that with a has_many, :through => relationship.
Thank you!
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