Complex Multi Model Rails From - ruby-on-rails

Question

How can I fill in the hidden fields in app/views/rounds/shot_fields.html.erb?
app/models/player.rb
class Player < ActiveRecord::Base
has_many :shots, :dependent => :destroy
belongs_to :team
belongs_to :user
has_many :games
has_and_belongs_to_many :home_games, :class_name => "Game"
has_and_belongs_to_many :away_games, :class_name => "Game"
end
app/models/round.rb
class Round < ActiveRecord::Base
belongs_to :game, :counter_cache => true
has_many :shots, :dependent => :destroy
accepts_nested_attributes_for :shots, :allow_destroy => true
validates_presence_of :number
validates_numericality_of :number
end
app/models/shot.rb
class Shot < ActiveRecord::Base
belongs_to :player, :counter_cache => true
belongs_to :game
belongs_to :round
belongs_to :team
end
app/models/game.rb
class Game < ActiveRecord::Base
has_many :shots, :dependent => :destroy
has_many :rounds, :order => 'number', :dependent => :destroy
accepts_nested_attributes_for :shots
belongs_to :away, :class_name => 'Team'
belongs_to :home, :class_name => 'Team'
has_and_belongs_to_many :home_players, :class_name => 'Player', :association_foreign_key => "home_player_id"
has_and_belongs_to_many :away_players, :class_name => 'Player', :association_foreign_key => "away_player_id"
accepts_nested_attributes_for :rounds, :allow_destroy => true
end
app/controllers/rounds_controller.rb
def new
#game = Game.find(params[:game_id])
#round = #game.rounds.build
#round.number = #game.rounds.count > 1 ? #game.rounds.count + 1 : 1
end
app/views/rounds/_form.html.erb
<% if #round.errors.any? %>
<div class="error">
<% #round.errors.full_messages.each do |msg| %>
<%= msg %><br/>
<% end %>
</div>
<% end %>
<%= form_for #game do |f| %>
<%= field_set_tag "Rounds" do %>
<table class="sortable">
<thead>
<tr>
<th>Number</th>
<th><%= #game.away_players[0].name %></th>
<th><%= #game.away_players[1].name %></th>
<th><%= #game.away_players[2].name %></th>
<th><%= #game.home_players[0].name %></th>
<th><%= #game.home_players[1].name %></th>
<th><%= #game.home_players[2].name %></th>
<th>Remove</th>
</tr>
</thead>
<tbody>
<%= f.fields_for :rounds do |round_form| %>
<%= render 'round_fields', :f => round_form %>
<% end -%>
</tbody>
</table>
<p>
<%= link_to_add_fields "Add Round", f, :rounds %>
</p>
<p>
<%= f.submit %>
</p>
<% end %>
<% end %>
app/views/rounds/round_fields.html.erb
<% 6.times { f.object.shots.build } if f.object.new_record? -%>
<tr>
<td>
<%= f.text_field :number, :size => 3 %>
</td>
<%= f.fields_for :shots do |shot_form| %>
<%= render 'shot_fields', :f => shot_form %>
<% end -%>
<td>
<%= f.check_box(:_destroy) %>
<%= f.hidden_field :id %>
</td>
</tr>
app/views/rounds/shot_fields.html.erb
<td>
<%= f.select :cup, [["Miss", 0], 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, ["No Shot", ""], ["Suicide", 11]] %>
<%= f.hidden_field :id %>
<%= f.hidden_field :game_id, :value => params[:id] %>
<%# f.hidden_field :player_id, :value => player.id %>
<%# f.hidden_field :team_id, :value => team.id %>
</td>

Answer 1

Passing them in via locals should work.
<%= render 'shot_fields', :locals => { :f => shot_form, :player => some_player_you_dont_have_defined, :team => some_team_variable_i_dont_see } %>
I don't quite understand what you're trying to do (lots of code, not a lot of context), but this is how you pass information into partials.