[英]Having trouble in updating join model extra attributes in has_many through association - Rails
我仍然是Rails的學習者,並且正在制作Google Adwords模擬游戲以進行培訓。 游戲里面的(我只能說明這個問題的相關部分),我有三個型號, 廣告組 (在我的代碼稱為KeywordAdgroup), 關鍵字,AdgroupKeyword,同時又有中有一個game_id博弈模型。
這三種模型之間的關系是has_many through:
關聯,即Adgroup通過AdgroupKeyword具有許多關鍵字,而Adword通過AdgroupKeyword具有許多關鍵字。
現在,我想采用一種邏輯,即每個關鍵字只能添加到特定游戲的單個廣告組中。 因此,我在聯接模型中添加了一個額外的屬性game_id
-AdgroupKeyword,並在模型中采用了validates_uniqueness_of :keyword_id, scope: :game_id
。
但是,我發現使用類似的代碼,我可以使用.save
方法驗證Create中的唯一性,但無法使用.update(params)
方法驗證Update中的唯一性。
主要問題在於,使用create
和update
類似的代碼,創建者可以save
game_id
save
到聯接模型(AdgroupKeyword)中,而update(params)
沒有將game_id
保存到聯接模型中(在控制台中) ,我可以看到update
沒有在記錄中插入game_id。
它將變成類似於game_id: nil
:
#<AdgroupKeyword id: 180, keyword_id: 9, created_at: "2016-12-04 11:12:00", updated_at: "2016-12-04 11:12:00", keyword_adgroup_id: 77, game_id: nil>
但是save方法確實插入了game_id,當使用save方法插入時game_id並非為nil。 就像是
#<AdgroupKeyword id: 174, keyword_id: 10, created_at: "2016-12-04 10:23:50", updated_at: "2016-12-04 10:23:50", keyword_adgroup_id: 77, game_id: 3>
以下是我的代碼:
keyword_adgroup.rb (廣告組的模型)
class KeywordAdgroup < ApplicationRecord
belongs_to :keyword_campaign
has_many :adgroup_keywords, inverse_of: :keyword_adgroup, dependent: :destroy
has_many :keywords, through: :adgroup_keywords, source: :keyword
accepts_nested_attributes_for :adgroup_keywords, allow_destroy: true
...
accepts_nested_attributes_for :keywords
...
...
end
keyword.rb
class Keyword < ApplicationRecord
...
...
has_many :keyword_adgroups, through: :adgroup_keywords
has_many :adgroup_keywords
...
end
adgroup_keyword.rb ( 聯接模型)
class AdgroupKeyword < ApplicationRecord
belongs_to :keyword_adgroup
belongs_to :keyword
validates_uniqueness_of :keyword_id, scope: :game_id
end
關系主要建立在Adgroup控制器中。
adgroups_controller.rb
class Adwords::AdgroupsController < AdwordsController
def index
...
end
def new
@adgroup = KeywordAdgroup.new
end
def create
@campaign = current_user.game.keyword_campaigns.find(params[:keyword_campaign_id])
@adgroup = @campaign.keyword_adgroups.build(adgroup_params)
@adgroup.game_id = @campaign.game_id
@adgroup.adgroup_keywords.each do |join|
join.game_id = @adgroup.game_id
end
if @adgroup.save
redirect_to new_adwords_ad_path(keyword_adgroup_id: @adgroup.id)
else
render :new
end
end
def edit
@adgroup = KeywordAdgroup.find(params[:id])
end
def update
@adgroup = KeywordAdgroup.find(params[:id])
@campaign = @adgroup.keyword_campaign
@adgroup.game_id = @campaign.game_id
@joins = @adgroup.adgroup_keywords
@joins.each do |join|
join.game_id = @adgroup.game_id
end
if @adgroup.update(adgroup_params)
redirect_to adwords_adgroups_path, notice: "Adgroup updated"
else
render :edit
end
end
...
private
def adgroup_params
params.require(:keyword_adgroup).permit(:name, :activate, :bid, keyword_ids: [], adgroup_keywords_attributes: [:game_id])
end
end
在同一個游戲中,無論在哪個廣告組中選擇重復的關鍵字,都可以在“創建”中進行回滾; 在“更新”中,它將僅使用game_id: nil
更新記錄。
僅供參考,我正在使用Ruby 2.3.0,Rails 5.0.0,並使用simpleform創建和更新廣告組。
我知道這有點混亂,對此感到抱歉,並感謝您閱讀我的話。 感謝任何建議。 已經花了幾個小時來修復它,但是在采用許多不同的方法后卻真的沒有希望。 認為這是我尚未弄清楚的一些概念性問題。
更新信息
在檢查控制台時,在“創建”方法中,它將出現:
AdgroupKeyword Exists (0.4ms) SELECT 1 AS one FROM "adgroup_keywords" WHERE "adgroup_keywords"."keyword_id" = ? AND "adgroup_keywords"."game_id" = ? LIMIT ? [["keyword_id", 14], ["game_id", 3], ["LIMIT", 1]]
Keyword Exists (0.3ms) SELECT 1 AS one FROM "keywords" WHERE "keywords"."keyword" = ? AND ("keywords"."id" != ?) LIMIT ? [["keyword", "Japan local trip"], ["id", 14], ["LIMIT", 1]]
KeywordAdgroup Exists (0.2ms) SELECT 1 AS one FROM "keyword_adgroups" WHERE "keyword_adgroups"."name" = ? AND "keyword_adgroups"."keyword_campaign_id" = ? LIMIT ? [["name", "3"], ["keyword_campaign_id", 36], ["LIMIT", 1]]
SQL (2.3ms) INSERT INTO "keyword_adgroups" ("name", "activate", "bid", "created_at", "updated_at", "keyword_campaign_id", "game_id") VALUES (?, ?, ?, ?, ?, ?, ?) [["name", "3"], ["activate", true], ["bid", #<BigDecimal:7fcaac52c320,'0.1E1',9(18)>], ["created_at", 2016-12-04 13:10:19 UTC], ["updated_at", 2016-12-04 13:10:19 UTC], ["keyword_campaign_id", 36], ["game_id", 3]]
SQL (0.2ms) INSERT INTO "adgroup_keywords" ("keyword_id", "created_at", "updated_at", "keyword_adgroup_id", "game_id") VALUES (?, ?, ?, ?, ?) [["keyword_id", 14], ["created_at", 2016-12-04 13:10:19 UTC], ["updated_at", 2016-12-04 13:10:19 UTC], ["keyword_adgroup_id", 84], ["game_id", 3]]
AdgroupKeyword Exists (0.3ms) SELECT 1 AS one FROM "adgroup_keywords" WHERE "adgroup_keywords"."keyword_id" = ? AND ("adgroup_keywords"."id" != ?) AND "adgroup_keywords"."game_id" = ? LIMIT ? [["keyword_id", 14], ["id", 187], ["game_id", 3], ["LIMIT", 1]]
在“更新”方法中,它將達到:
AdgroupKeyword Exists (0.2ms) SELECT 1 AS one FROM "adgroup_keywords" WHERE "adgroup_keywords"."keyword_id" = ? AND "adgroup_keywords"."game_id" IS NULL LIMIT ? [["keyword_id", 17], ["LIMIT", 1]]
SQL (2.0ms) INSERT INTO "adgroup_keywords" ("keyword_id", "created_at", "updated_at", "keyword_adgroup_id") VALUES (?, ?, ?, ?) [["keyword_id", 17], ["created_at", 2016-12-04 13:07:03 UTC], ["updated_at", 2016-12-04 13:07:03 UTC], ["keyword_adgroup_id", 82]]
AdgroupKeyword Exists (0.2ms) SELECT 1 AS one FROM "adgroup_keywords" WHERE "adgroup_keywords"."keyword_id" = ? AND ("adgroup_keywords"."id" != ?) AND "adgroup_keywords"."game_id" = ? LIMIT ? [["keyword_id", 11], ["id", 185], ["game_id", 3], ["LIMIT", 1]]
你可以嘗試運行后,該塊#update
調用(內if
塊)?
@adgroup.reload
@adgroup.adgroup_keywords.each do |join|
join.update(:game_id, @adgroup.game_id)
end
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