3
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)%>     

在此处输入图像描述

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。

4

2 回答 2

8

在 Rails 3.x 中,使用simple_form

<%= simple_form_for @player_profile do |f| %>
  <%= f.association :player_roles, as: :check_boxes %>
  ...
<% end %>

在 Rails 4 中,使用collection_check_boxeswrite

<%=collection_check_boxes(:player_profile, :playing_role_ids, PlayerRole.all, :id, :name)%> 

您必须使用名称:playing_role_ids,因为您分配的是 ID 而不是 PlayingRoles。

于 2013-07-02T21:49:44.820 回答
0

如果您使用的是 Rails 4,您应该可以使用collection_check_boxeshttp ://api.rubyonrails.org/classes/ActionView/Helpers/FormOptionsHelper.html#method-i-collection_check_boxes

于 2013-07-02T21:41:17.823 回答