Compare ActiveRecord(AR) vs. DataMapper(DM)
DataObjects.logger = DataMapper::Logger.new(STDOUT, 0) DataObjects::Sqlite3.logger = DataObjects::Logger.new(STDOUT, 0) # SQLite3 in-memory ActiveRecord::Base.establish_connection( :adapter => "sqlite3", :database => ":memory:") ä»–ã®DBMSã¨ã®æŽ¥ç¶šæ–¹æ³•ã¨ã—ã¦ã¯ã€ä»¥ä¸‹ã®ã‚ˆã†ã«æ›¸ãã“ã¨ã‚‚å¯èƒ½ã§ã™ã€‚ # SQLite3 file # ActiveRecord::Base.establish_connection( # :adapter => "sqlite3", :database => "dm_test.sqlite3") # MySQL, Postgresã¯ç•¥ #
ramaze-users.jp - DataMapper/マイグレーション
DataMapperã«ã¯ã€ãƒ¢ãƒ‡ãƒ«ã‚¯ãƒ©ã‚¹ã«å®šç¾©ã—ãŸãƒ—ãƒãƒ‘ティã®æƒ…å ±ã‹ã‚‰ã€ãƒ†ãƒ¼ãƒ–ãƒ«æ§‹é€ ã‚’è‡ªå‹•çš„ã«å¤‰æ›´ã™ã‚‹æ©Ÿèƒ½ãŒã‚る。 DataMapper.auto_migrate! å…¨ã¦ã®ãƒ¢ãƒ‡ãƒ«ã‚¯ãƒ©ã‚¹ã«å¯¾ã—ã€è‡ªå‹•ãƒžã‚¤ã‚°ãƒ¬ãƒ¼ã‚·ãƒ§ãƒ³ã‚’è¡Œã†ã€‚テーブル内ã®ãƒ‡ãƒ¼ã‚¿ã¯ç ´æ£„ã•ã‚Œã‚‹ã€‚ DataMapper.auto_upgrade! å…¨ã¦ã®ãƒ¢ãƒ‡ãƒ«ã‚¯ãƒ©ã‚¹ã«å¯¾ã—ã€ãƒ†ãƒ¼ãƒ–ル内ã®ãƒ‡ãƒ¼ã‚¿ã‚’ä¿å˜ã—ãŸã¾ã¾ã€è‡ªå‹•ãƒžã‚¤ã‚°ãƒ¬ãƒ¼ã‚·ãƒ§ãƒ³ã‚’è¡Œã†ã€‚ 特定ã®ãƒ¢ãƒ‡ãƒ«ã”ã¨ã«è‡ªå‹•ãƒžã‚¤ã‚°ãƒ¬ãƒ¼ã‚·ãƒ§ãƒ³ã‚’è¡Œã†ã“ã¨ã‚‚ã§ãる。 Rails(ActiveRecord)ã¨åŒæ§˜ã«ã€ãƒžã‚¤ã‚°ãƒ¬ãƒ¼ã‚·ãƒ§ãƒ³ã”ã¨ã®ãƒ•ã‚¡ã‚¤ãƒ«ã‚’用æ„ã™ã‚‹æ–¹æ³•ã€‚ 例：ã¾ãšã€models.rbã«ãƒ¢ãƒ‡ãƒ«ã®å®šç¾©ãŒã‚ã‚‹ã¨ã™ã‚‹ã€‚ class Person include DataMapper::Resource property :id, Integer, :serial => true property :name,
ROM
Ruby Object Mapper is an open-source persistence and mapping toolkit for Ruby built for speed and simplicity. Learn MoreSupport rom-rb SponsorsWe are looking for sustainable sponsorship. If your company is relying on rom-rb or simply want to see rom-rb evolve faster to meet your requirements, please consider backing the project through our campaign on opencollective.com/rom.
LIFE ON THE EDGE WITH MERB, DATAMAPPER & RSPEC
This book is work in progress, your help is requested @ github ã“ã®æœ¬ã¯ã¾ã 執ç†ä¸ã§ã™ã€‚å”力ã„ãŸã ã‘ã‚‹ãªã‚‰ github ã¾ã§ã€‚ Life On The Edge With Merb, DataMapper & RSpec Foreword (å‰æ›¸ã) (TODO) the foreword Preface (åºæ–‡) This is a collaborative effort to document the features of Merb and DataMapper, while also providing example Merb applications. ã“ã‚Œã¯ã€Merb 㨠DataMapper ã®æ©Ÿèƒ½ã‚’ドã‚ュメント化ã—よã†ã¨ã„ã†ã€å”力的ãªå–り組ã¿ã§ã™ã€‚ ã¾ãŸ Merb アプリケーションã®ã‚µãƒ³ãƒ—ルもæä¾›ã—ã¾ã™
GAEã§sinatraã¨DataMapperを使ã†ã¾ã§ã®ãƒ¡ãƒ¢ï¼ˆãƒãƒ¼ã‚¸ãƒ§ãƒ³é–¢é€£ã§ã¯ã¾ã‚‹ï¼‰ - Guyon Diary
Google App Engineã§sinatraã¨DataMapper(ã®DataStore)を使ãˆã‚‹ã‚ˆã†ã«ã™ã‚‹ã¾ã§ã«çµæ§‹è‹¦åŠ´ã—ãŸã®ã§ãƒ¡ãƒ¢ã§ã™ã€‚ ã¯ã¾ã£ãŸã¨ã“ã‚ 2009å¹´9月24æ—¥ç¾åœ¨ã¯JPサイトã§ã¯SDKã¯1.2.0ã§ENã§ã¯1.2.5 デプãƒã‚¤ã™ã‚‹SDKã¨WEB-INF/libã®SDKã®ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã¯åŒç‰ã¨ã™ã‚‹ 1.2.5ã§æƒãˆãŸã‚‰ã†ã¾ãã„ã£ãŸ DataMapperã®æ–°ã—ã„ãƒãƒ¼ã‚¸ãƒ§ãƒ³ãŒæœ€è¿‘リリースã•ã‚ŒãŸãŒreadãŒå®Ÿè£…ã•ã‚Œã¦ã„ãªã„ã¨ä¾‹å¤–ãŒç™ºç”Ÿã™ã‚‹ 0.9.11を指定ã—ã¦ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã‚’è½ã¨ã™ã¨å‹•ã„ãŸï¼ˆãã®ã†ã¡æ–°ã—ã„ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã‚‚対応ã•ã‚Œã‚‹ã¨æ€ã„ã¾ã™ï¼‰ DatastoreNeedIndexException例外ãŒç™ºç”Ÿã—ã¦DataStoreãŒä½¿ãˆãªã„ SDKã®1.2.5を使ã£ãŸã‚‰ã„ã‘ãŸã€‚ 管ç†ç”»é¢â†’Datastore→Indexesã§ã€ŽBuildingã€ãŒè¡¨ç¤ºã•ã‚Œã‚Œã°ãã®ã†ã¡ã‚¤ãƒ³ãƒ‡ãƒƒã‚¯ã‚¹ãŒä½œæˆ
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