class PlayerProfile < ActiveRecord::Base
has_many :playing_roles
has_many :player_roles, through: :playing_roles
accepts_nested_attributes_for :playing_roles, :allow_destroy => true
end
class PlayingRole < ActiveRecord::Base
belongs_to :player_roles
belongs_to :player_profile
end
class PlayerRole < ActiveRecord::Base
has_many :playing_roles
has_many :player_profiles, through: :playing_roles
end
架构.rb
create_table "player_profiles", force: true do |t|
t.integer "user_id"
t.string "firstname"
t.string "lastname"
t.date "birthdate"
t.string "favorite_team"
t.string "mobile"
t.string "address"
t.string "lang"
t.string "team"
t.integer "weight"
t.integer "height"
t.text "biography"
t.string "idols"
t.datetime "created_at"
t.datetime "updated_at"
t.string "nationality"
end
add_index "player_profiles", ["user_id"], name: "index_player_profiles_on_user_id", using: :btree
create_table "player_roles", force: true do |t|
t.string "name"
end
create_table "playing_roles", force: true do |t|
t.integer "player_profile_id"
t.integer "player_role_id"
t.datetime "created_at"
t.datetime "updated_at"
end
我需要为玩家可以扮演的每个角色显示复选框。选中的复选框表示“playing_roles”relashionship 的记录
使用collection_check_boxes:在 Rails4 中
更新
如果我使用:playing_role_ids我得到这个错误:
<%=collection_check_boxes(:player_profile, :playing_role_ids, PlayerRole.all, :id, :name)%>
似乎它正在寻找关系上的记录,但如果记录不存在则意味着不存在关系并且必须取消选中该复选框。