私は持っていて、次のような多くの関係設定に属しています:
has_and_belongs_to_many :players, :class_name => "User" # In app/models/team.rb
has_and_belongs_to_many :teams # In app/models/user.rb
ユーザーを作成した後、フォームを使用してチームを作成しています。これが私のチームコントローラーです:
def create
@team = Team.create(team_params)
end
private
def team_params
params.require(:team).permit(:name,:captain,:season,:year,:active,:player_ids)
end
そして、プレイヤー(ユーザー)を除いてすべてが保存されます。コンソールに出力される内容は次のとおりです。
Started POST "/teams" for 127.0.0.1 at 2013-10-20 01:46:04 -0400
Processing by TeamsController#create as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"jhNUgdfSVNxBgpZkmvjSQg/7DGsV1ts+Y1a1xWQ6A1Y=", "team"=>{"name"=>"uuuuu", "captain"=>"18", "season"=>"Summer", "year"=>"2013", "player_ids"=>["", "18"]}, "button"=>""}
User Load (1.4ms) SELECT "users".* FROM "users" WHERE "users"."id" = 18 ORDER BY "users"."id" ASC LIMIT 1
Unpermitted parameters: player_ids
(0.2ms) BEGIN
SQL (3.4ms) INSERT INTO "teams" ("captain", "created_at", "name", "season", "updated_at", "year") VALUES ($1, $2, $3, $4, $5, $6) RETURNING "id" [["captain", 18], ["created_at", Sun, 20 Oct 2013 05:46:04 UTC +00:00], ["name", "uuuuu"], ["season", "Summer"], ["updated_at", Sun, 20 Oct 2013 05:46:04 UTC +00:00], ["year", 2013]]
(4.2ms) COMMIT
Redirected to http://lvh.me:3000/admin
Completed 302 Found in 23ms (ActiveRecord: 9.3ms)
プレイヤーがセーブしない理由は?もともとparams.requireにはなかっplayer_ids
たのですが、無駄に追加しました