Is it possible to define a 'before_save' callback in a module?
Is it possible to define a before_save callback in a module? Such that with a class like this: class Model include MongoMapper::Document include MyModule end and a module like this: module MyModule before_save :do_something def do_something #do whatever end end do_something will be called before any Model objects are saved? I've tried it like this but get undefined method 'before_save' for MyModul
ActiveRecordã®before_saveã§ã†ã£ã‹ã‚Š - Qiita
å•é¡Œ ActiveRecordã® before_save ã€before_update コールãƒãƒƒã‚¯ã«ã€ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆã‚³ãƒ¼ãƒ‰ãŒç›´æŽ¥æ“作ã—ãªã„属性をè¨å®šã™ã‚‹å‡¦ç†ã‚’書ãよã†ãªæ©Ÿä¼šãŒçµæ§‹ã‚ã‚‹ã¨æ€ã„ã¾ã™ã€‚ ãã“ã§ã€æ¬¡ã®ã‚ˆã†ãªã‚³ãƒ¼ãƒ‰ã‚’書ãã‚ã‘ã§ã™ãŒã€ã“ã®ã‚³ãƒ¼ãƒ‰ã¯æ„図ã—ãŸã©ãŠã‚Šã«å‹•ä½œã—ã¾ã›ã‚“。ç†ç”±ãŒã™ãã«ã‚ã‹ã‚‹ã§ã—ょã†ã‹ï¼Ÿ class Item < ActiveRecord::Base before_save :prepare_save # This callback doesn't validate def prepare_save if hoge_check_ok? self.checked = true else self.checked = false end end end è§£ç” prepare_save メソッド内㧠else を通ã£ãŸã¨ãã€self.checked = false ã®è©•ä¾¡å€¤
How to convert ActiveRecord results into an array of hashes
I have an ActiveRecord result of a find operation: tasks_records = TaskStoreStatus.find( :all, :select => "task_id, store_name, store_region", :conditions => ["task_status = ? and store_id = ?", "f", store_id] ) Now I want to convert this results into an array of hashes like this: [0] -> { :task_d => 10, :store_name=> "Koramanagala", :store_region=> "India" } [1] -> { :task_d => 10, :store_name=>
ActiveRecordã®updated_atã€created_atを自動更新ã—ãªã„方法 - ã„ã¨ã†ã¾ã•ã—ã®ã‚«ãƒãƒ£ã‚«ãƒãƒ£TODAY
railsã®ãƒ¢ãƒ‡ãƒ«ï¼ˆActiveRecord）ã«ã¯timestamps(updated_atã¨created_at)ã¨ã„ã†ãƒ•ã‚£ãƒ¼ãƒ«ãƒ‰ãŒã‚ã£ã¦ã€æ›´æ–°æ—¥æ™‚ã€ç”Ÿæˆæ—¥æ™‚ãŒå‹æ‰‹ã«è¨˜éŒ²ã•ã‚Œã¦ä¾¿åˆ©ã§ã™ã。 ã§ã‚‚特定ã®ã‚¿ã‚¤ãƒŸãƒ³ã‚°ã§ã“ã®è‡ªå‹•æ›´æ–°ï¼ˆç‰¹ã«updated_at）をæ¢ã‚ãŸã„å ´åˆãŒã‚ã‚Šã¾ã™ã€‚ ãã‚“ãªæ™‚ã«ã¯ActiveRecord::Baseã®record_timestampsã‚’falseã«ã™ã‚‹ã¨ã„ã„ã¿ãŸã„ã§ã™ã€‚ 例ãˆã°ã€åƒ•ã®å ´åˆï¼š ・CMSã¿ãŸã„ãªä»•çµ„ã¿ã‚’作ã£ã¦ã„ã‚‹ ・ページã®ä¸èº«ã‚’入れã¦ãŠãPageã¨ã„ã†ãƒ¢ãƒ‡ãƒ«ãŒã‚ã£ãŸã€‚ ・ã“ã®ãƒ¢ãƒ‡ãƒ«ã«ã‚¢ã‚¯ã‚»ã‚¹ã‚«ã‚¦ãƒ³ã‚¿ãƒ¼ï¼ˆpages.counter）用ã®ãƒ•ã‚£ãƒ¼ãƒ«ãƒ‰ã‚り。 ・アクセスカウンターã¯/pages/showãŒå‘¼ã°ã‚Œã‚‹åº¦ã«pages.counterを＋１ã™ã‚‹ä»•çµ„㿠・ã¨ã„ã†ã“ã¨ã¯/pages/showãŒå‘¼ã°ã‚Œã‚‹åº¦ã«updated_atãŒæ›´æ–°ã•ã‚Œã‚‹ ・/page
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bundle installã‚’ã—ã¦ã€rails consoleã‚’ç«‹ã¡ä¸Šã’ãªãŠã—ã¾ã™ã€‚ ã ã„ã¶è¦‹ã‚„ã™ããªã£ãŸæ„Ÿã˜ãŒã—ã¾ã™ã€‚ ãŸã ã€Rails4.2ã‹ã‚‰ã¯ã€PrettyPrintã¨ã„ã†ã®ãŒæ¨™æº–ã§ã¯ã„るよã†ã«ãªã£ã¦ã„ã¦ã€æ¨™æº–ã§ã‚‚ã ã„ã¶ã¿ã‚„ã™ããªã£ã¦ã¾ã™ã。 Rails Panel ã“ã®gemã‚’ã„れるã¨ã€Chromeã®Developer Toolã§Railsã®æƒ…å ±ã‚’å–å¾—ã§ãるよã†ã«ãªã‚Šã¾ã™ã€‚ ã¾ãšã€Railsアプリケーションã«meta_requestを入れる必è¦ãŒã‚ã‚Šã¾ã™ã€‚Gemfileã«gem 'meta_request', group: :developmentã‚’è¿½åŠ ã—ã¦ã€bundle installã—ã¾ã™ã€‚ ã“ã“ã‹ã‚‰Chromeã®æ‹¡å¼µã‚’インストールã—ã¦ã€Railsアプリケーションをブラウザã§é–‹ã„ã¦ã€[è¦ç´ ã®æ¤œè¨¼]ã§Developer Toolã‚’é–‹ãã¨RailsタブãŒè¡¨ã‚Œã¾ã™ã€‚ ãã®ä¸ã§ã„ã‚ã„
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Railsã®Active Recordã®whereæ¡ä»¶ã§ã€ã€Œè¤‡æ•°ã‚«ãƒ©ãƒ ã®ã©ã‚Œã‹ã«ä¸€è‡´ã—ã¦ã„ã‚Œã°OKã€ã¨ã„ã†æ¡ä»¶ã‚’作る方法ã§ã™ã€‚ãŸã¨ãˆã°ã€æ€§ã‚«ãƒ©ãƒ ã¨åカラムãŒåˆ¥ã‚ŒãŸUserã«å¯¾ã—ã¦ã€ã©ã¡ã‚‰ã§ã‚‚ã„ã„ã®ã§æ¤œç´¢æ–‡å—ãŒãƒ’ットã—ã¦ã»ã—ã„ã¨ã„ã†ãƒ‘ターンã®whereæ¡ä»¶ã§ã™ã€‚ 🎂 検索対象ã®ã‚«ãƒ©ãƒ ãŒå›ºå®šã•ã‚Œã¦ã„ã‚‹å ´åˆ(é™çš„)UserテーブルãŒã€æ¬¡ã®ã‚ˆã†ãªå®šç¾©ã ã£ãŸã¨ã—ã¾ã™ã€‚ User id: integer family_name: string first_name: string created_at: datetime updated_at: datetime ã™ã§ã«ORæ¡ä»¶ã®å¯¾è±¡ã¨ãªã‚‹ã‚«ãƒ©ãƒ ãŒå›ºå®šã•ã‚Œã¦ã„ã‚‹å ´åˆã¯ã€æ¬¡ã®ã‚ˆã†ãªã‚³ãƒ¼ãƒ‰ã«ãªã‚Šã¾ã™ã€‚ class User < Active Record::Base attr_protected :id scope :search_names_or, l
schema.rbã˜ã‚ƒãªãã¦structure.sqlã§ã‚¹ã‚ãƒ¼ãƒžæƒ…å ±ã‚’ç®¡ç†ã—よㆠ- tech-kazuhisa's blog
先日開催ã•ã‚ŒãŸé–¢è¥¿Ruby会è°05ã«å‚åŠ ã•ã‚ŒãŸæ–¹ãŠç–²ã‚Œæ§˜ã§ã—ãŸã€‚色々ãªæ–¹ã¨ãŠè©±å‡ºæ¥ã¦éžå¸¸ã«æ¥½ã—ã„1æ—¥ã§ã—ãŸã€‚ ã•ã¦ã€ã€ŒNo Sugar 〜ç§ã¯ã©ã®ã‚ˆã†ã«ã—ã¦Rails開発ã«è²¢çŒ®ã—ãŸã‹ã€œã€ã¨ã„ã†ç™ºè¡¨ã‚’ã•ã‚ŒãŸ @kennyj_jp ã•ã‚“ã‹ã‚‰æ‡‡è¦ªä¼šã§é¢ç™½ã„話をèžãã“ã¨ãŒã§ãã¾ã—ãŸã€‚ schema.rbã§ã‚¹ã‚ãƒ¼ãƒžæƒ…å ±ã‚’ç®¡ç†ã™ã‚‹ã®ã¯é™ç•ŒãŒã‚ã‚‹ã®ã§ã¯ãªã„ã‹ï¼Ÿ 先日ç§ãŒãƒªãƒªãƒ¼ã‚¹ã—ãŸpg_index_where ã«ã¤ã„ã¦å¤±ç¤¼ãªãŒã‚‰æ„見をèžã„ã¦ã¿ã¾ã—ãŸã€‚ãƒã‚¤ãƒ³ãƒˆã¯ã‚¹ã‚ãƒ¼ãƒžæƒ…å ±ã‚’dumpã™ã‚‹å‡¦ç†ã«ã¤ã„ã¦ç¾åœ¨ã®å®Ÿè£…方法ã§æ£ã—ã„ã®ã‹ã¨ã„ã†ç‚¹ã€‚ ãã‚‚ãもユニークインデックスã«whereを付ã‘るよã†ãªRDB固有ã®å‘½ä»¤ã«ã¤ã„ã¦ã¯ã€Rails標準ã®schema.rbã§ç®¡ç†ã—続ã‘ã‚‹ã®ã¯é™ç•ŒãŒã‚ã‚‹ã®ã§ã¯ãªã„ã‹ã¨ã„ã†ãŠè©±ã§ã—ãŸã€‚ Railsã®è¨å®šã§dump方法を変更ã§ãã‚‹ 次ã®ã‚ˆã†ã«application.rbã®ä¸€éƒ¨ã‚’コメント
Rails4:CookieOverflowエラーを解決ã™ã‚‹ - Hello world, I am kgmx.
セッションã«å·¨å¤§ãªãƒ‡ãƒ¼ã‚¿ã‚’æ ¼ç´ã—よã†ã¨ã—ãŸã‚‰ã€CookieOverflowエラーã¨ãªã‚‹ã€‚ 今回ã¯Twitterã®authèªè¨¼ã®éš›ã«è‰²ã€…ãªãƒ‡ãƒ¼ã‚¿ï¼ˆ4KBä»¥ä¸Šï¼‰ã‚’æ ¼ç´ã—よã†ã¨ã—ãŸã‹ã‚‰ã¿ãŸã„ã§ã™ã€‚ 解決方法 セッションã¯ä½¿ã†ã‘ã©ã€æœ€å°é™ã®ãƒ‡ãƒ¼ã‚¿ã ã‘ã‚’æ ¼ç´ã™ã‚‹ã€‚ セッションデータをActiveRecord上ã«æ ¼ç´ã™ã‚‹ã€‚ ã‚„ã£ãŸã“ã¨ãªã„ã®ã§ã€Activerecordã«æ ¼ç´ã™ã‚‹ã“ã¨ã«ã—ãŸã€‚ 1. ãƒ‡ãƒ¼ã‚¿ã‚’æ ¼ç´ã™ã‚‹ãƒ†ãƒ¼ãƒ–ルを作æˆã™ã‚‹ã€‚ $ gem 'activerecord-session_store', github: 'rails/activerecord-session_store' $ bundle install $ rails generate active_record:session_migration $ rake db:migrate == 20140813104550 AddSes
ActiveRecordã§DISTINCTを使ㆠ- setoya-blog
今ã¾ã§ã€ä»¥ä¸‹ã®ã‚ˆã†ã«ã—ã¦ã„ãŸãŒã€ Hoge.select('DISTINCT *').where(:hoge => true) Railsã®å…¬å¼ã‚¬ã‚¤ãƒ‰ã«ã‚ˆã‚‹ã¨ã€uniqã¨ã„ã†ãƒ¡ã‚½ãƒƒãƒ‰ã‚’使ã†ã®ãŒæ£å¼ãªã‚„ã‚Šæ–¹ãªã®ã§ã€ Hoge.where(:hoge => true).uniq ã“ã‚Œã§ã€ä¸Šã®ã¨åŒã˜selectæ–‡ãŒã‹ã‘る。 ã¡ãªã¿ã«ã€ãªã‚“ã§ã“ã‚“ãªã“ã¨ã‚’調ã¹ãŸã‹ã¨ã„ã†ã¨ã€Kaminariã§ãƒšãƒ¼ã‚¸ãƒ³ã‚°ã‚’ã—ã¦ã„ãŸéš›ã«ã€å‰è€…ã®ã‚¯ã‚¨ãƒªã ã¨ã€DISTINCTã‚’ã™ã‚‹å‰ã®é‡è¤‡ã—ãŸè¡Œã‚’çµ±åˆã™ã‚‹å‰ã®è¡Œæ•°ã§ãƒšãƒ¼ã‚¸ãƒ³ã‚°ãŒã•ã‚Œã¦ã—ã¾ã£ã¦ã€æ„図ã—ãŸå‹•ä½œã«ãªã‚‰ãªã‹ã£ãŸãŸã‚。 後者ã ã¨é‡è¤‡ã—ãŸè¡Œã‚’統一ã—ãŸã‚ã¨ã®çµæžœã§ãƒšãƒ¼ã‚¸ãƒ³ã‚°ã•ã‚Œã¦ã„ãŸã€‚
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