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DCILET THE CODE DO THE TALKING “DCI and the application builds our mental models” redux Shintaro Kakutani(@kakutani), ruby-no-kai || esminc,Fukuoka RubyKaigi 01, 2012-12-01(Sat)

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taken by @hibariya @kakutani @j2h #rubyfriends

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ఏɹڙ ͓͔͛͞·Ͱ̏̌प೥ ৘ใԽٕज़Λ௨ͯࣾ͡ձͱڞੜ͢Δ

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Asakusa.rb http://www.flickr.com/photos/takkanm/3978417669

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http://www.amazon.co.jp/o/ASIN/4274068560/kakutani-22

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http://rubyfriends.com

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http://www.slideshare.net/snoozer05/20101204-youmustunlearnwhatyouhavelearned/61

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DCILET THE CODE DO THE TALKING “DCI and the application builds our mental models” redux Shintaro Kakutani(@kakutani), ruby-no-kai || esminc,Fukuoka RubyKaigi 01, 2012-12-01(Sat)

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James O.Coplien

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We’ve already had nice resources on the net...

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http://www.amazon.co.jp/o/ASIN/0470684208/kakutani-22/ref=nosim/

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http://objectsonrails.com/

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http://clean-ruby.com/

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http://rubysource.com/dci-the-evolution-of-the-object-oriented-paradigm/

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http://dci-in-ruby.info/resources.html

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http://mikepackdev.com/blog_posts/24-the-right-way-to-code-dci-in-ruby

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ιϑτ΢ΣΞ͸ Ͳ͜ʹ͋Δͷ͔

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ιϑτ΢ΣΞ͸಄ͷͳ͔ʹ͋Δ

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ΤϯυϢʔβʔͷ ϝϯλϧϞσϧΛ ιʔείʔυͱͯ͠ දݱ͢Δ

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গͣͭ͠ɺ ܁Γฦ͠ͳ͕Β ҭ͍ͯͯ͘

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Software Development as Learning Process

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“Agile”

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ςετۦಈ։ൃ

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ΦϒδΣΫτࢦ޲ઃܭ

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ద੾ͳ໊લͷ͍ͭͨ ίʔυΛద੾ͳ৔ॴʹ ஔ͘͜ͱ

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Ruby

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✓ Agile Style Workflow ✓ Test Driven Development ✓ Object-Oriented Design ✓ Ruby

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ιϑτ΢ΣΞ͸಄ͷͳ͔ʹ͋Δ

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http://www.amazon.co.jp/o/ASIN/4798124583/kakutani-22/ref=nosim/

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We’re on the same rails http://pixdaus.com/single.php?id=104150

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http://guides.rubyonrails.org/getting_started.html

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http://guides.rubyonrails.org/getting_started.html#the-mvc-architecture

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HTTP: Hyper TEXT Transfer Protocol

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http://martinfowler.com/eaaCatalog/activeRecord.html

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Active Record is a pattern for persistence

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Rails doesn’t save YOUR Applications! (it’s an awesome FRAMEWORK!)

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http://www.flickr.com/photos/essgee/2477102230/ Recap ‘Common Pitfalls’ @ursm mentioned in Sapporo RubyKaigi 2012

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http://sapporo.rubykaigi.org/2012/en/schedule/details/64.html

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✓ Helpers don’t help up ✓ Partials are just partial, Not parts ✓ Too Fat to be a model

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✓ Helpers don’t help up ✓ Partials are just partial, Not parts ✓ Too Fat to be a model

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Too Fat to be a model

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DCI Data-Context-Interaction

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✓ Data: AR domain knowledge structure ✓ Context: ৔(Ba) Playing field for “objects” ✓ Interaction: Role Object#extend / refinements?

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http://mikepackdev.com/blog_posts/24-the-right-way-to-code-dci-in-ruby

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✓ Data: AR ✓ Context: “Activities” ✓ Interaction: Modules Poor man’s DCI: you should check the talk given by @ursm in sapporo RubyKaigi 2012, thanks!

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http://qa.atmarkit.co.jp/

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Recap

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✓ Agile Style Workflow ✓ Test Driven Development ✓ Object-Oriented Design ✓ Ruby

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Rails doesn’t save YOUR Applications! (it’s an awesome FRAMEWORK!)

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ΤϯυϢʔβʔͷ ϝϯλϧϞσϧΛ ιʔείʔυͱͯ͠ දݱ͢Δ

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ιϑτ΢ΣΞ͸಄ͷͳ͔ʹ͋Δ

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Bonus Takeaway

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https://codeclimate.com/

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ιϑτ΢ΣΞΛཧղ͢Δͷʹ͋ͨΓɺυΩϡ ϝϯτ͕͋Δͱྑ͍͠ɺςετίʔυ΋͋Δͱ ॿ͔ΔɻϓϩμΫγϣϯίʔυʹίϝϯτ͕͋ Ε͹͔֬ʹศར͚ͩͲɺϓϩμΫγϣϯίʔυ ͦͷ΋ͷ͕ͦͷιϑτ΢ΣΞͷ͜ͱΛޠ͍ͬͯ ΔΑ͏ʹίʔυΛॻ͚ΔΑ͏ʹʜʜͳΓ͍ͨ ͶɻͰ΋ɺͦͷͨΊʹ͸ɺ͚͖ͬΐࣗ͘෼ͨͪ ্͕खʹͳΔΑ͏ʹ࿅शΛॏͶ͍͔ͯ͘͠ͳ͍ ͱࢥ͏ͷͰɺΈͳ͞ΜҰॹʹ͕Μ͹Ζ͏

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Let the Code Do The Talking!