Rails Hands-on Seminar Ch04

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ୈ4ষ Rails෩ຯͷRuby #RailsϋϯζΦϯηϛφʔ http://railstutorial.jp/ RailsνϡʔτϦΞϧ by ϠεϥϘ 3VCZPO3BJMTνϡʔτϦΞϧ ࣮ྫΛ࢖ͬͯ3BJMTΛֶ΅͏ .JDIBFM)BSUM ϚΠέϧɾϋʔτϧ

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ηϛφʔΛ ࢝ΊΔલʹ

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Screencast.ﬁrst.visit? http://railstutorial.jp/screencasts

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Chapter.code.valid? https://github.com/yasslab/sample_apps

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ຊηϛφʔͷ ̏ͭͷಛ௕

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ߨࢣͷλʔϛφϧ͸Լه URL ͔ΒӾཡͰ͖·͢ :) http://screenx.tv/yasulab ߨٛதʹࢀরͨ͠ϦϯΫ͸ίϝϯτཝͰ (࣭໰΋͓ؾܰʹ)

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࣭໰͸͍ͭͰ΋͓ؾܰʹ! ݸผ૬ஊ͸ٳܜ΍ऴྃޙʹ :)

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“࿩ʹ͍͍͚ͭͯͳ͔ͬͨorz” ͦΜͳͱ͖ʹ҆৺ͳಈըαϙʔτ!

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Ready?

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ϋϯζΦϯηϛφʔΛ ਐΊ͍͖ͯ·͠ΐ͏!

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ୈ4ষ Rails෩ຯͷRuby 4.1 ಈػ http://railstutorial.jp/ RailsνϡʔτϦΞϧ by ϠεϥϘ 3VCZPO3BJMTνϡʔτϦΞϧ ࣮ྫΛ࢖ͬͯ3BJMTΛֶ΅͏ .JDIBFM)BSUM ϚΠέϧɾϋʔτϧ

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ୈ̏ষͰ΍ͬͨ͜ͱ • ຊ֨తʹαϯϓϧΞϓϦΛ։ൃ͠·͢. • scaffold ͸࢖Θͣʹ੩తϖʔδΛ੍࡞: • ࣗಈੜ੒ʹ͸པΒͣɺखಈͰίʔυΛॻ͖·͢. • ςετΛ࢖ͬͯɺςετۦಈ։ൃΛֶΜͩ • λΠτϧ͕ಈతʹੜ੒͞ΕΔϖʔδΛ࡞੒. • rails generate Λ࢖Θͣʹ About ϖʔδΛ࡞੒. • DRYͳײ͡ʹϦϑΝΫλϦϯάͨ͠ɽ

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• ϔϧύʔؔ਺Λ࢖ͬͯλΠτϧΛվળ: • HomeͰ͸ϕʔελΠτϧ͚ͩΛද͍ࣔͨ͠ • Rubyͷجຊతͳจ๏ʹֶ͍ͭͯश: • จࣈྻͱϝιου • σʔλߏ଄ (഑ྻ/Block/Hash/γϯϘϧ) • Ϋϥε (ίϯετϥΫλ/ܧঝ/૊ࠐΈΫϥε) • Railsʹ͓͚ΔΫϥε (Controller / User) ୈ̐ষͰ΍Δ͜ͱ

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• ϔϧύʔؔ਺Λ࢖ͬͨλΠτϧͷվળ • :title ͕ۭͰ΋ ‘|’ ͕දࣔ͞Εͯ͠·͏໰୊ • ༨෼ͳॎ๮ΛApplication HelperΛ࢖ͬͯվળ • λΠτϧ֬ೝ༻ͷςετΛߋ৽ • Static PagesͷHomeϖʔδΛߋ৽ • ςετΛ࣮ߦ͠ɺ݁ՌΛ֬ೝ ಈػ

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ୈ4ষ Rails෩ຯͷRuby 4.2 จࣈྻ(string)ͱϝιου http://railstutorial.jp/ RailsνϡʔτϦΞϧ by ϠεϥϘ 3VCZPO3BJMTνϡʔτϦΞϧ ࣮ྫΛ࢖ͬͯ3BJMTΛֶ΅͏ .JDIBFM)BSUM ϚΠέϧɾϋʔτϧ

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• ίϝϯτ: # (γϟʔϓه߸) • จࣈྻ • ࣜల։: “#{object}” • ग़ྗ: puts, print • γϯάϧΫΥʔτ(‘) vs. μϒϧΫΥʔτ(“) • ΦϒδΣΫτͱϝοηʔδͷड͚౉͠ • ϝιουͷఆٛ: ҉໧ͷ໭Γ஋ จࣈྻ(string)ͱϝιου

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ୈ4ষ Rails෩ຯͷRuby 4.3 ଞͷσʔλߏ଄ http://railstutorial.jp/ RailsνϡʔτϦΞϧ by ϠεϥϘ 3VCZPO3BJMTνϡʔτϦΞϧ ࣮ྫΛ࢖ͬͯ3BJMTΛֶ΅͏ .JDIBFM)BSUM ϚΠέϧɾϋʔτϧ

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• ഑ྻͱൣғԋࢉࢠ  [“foo”, “bar”, “baz”]  (0..9).to_a # => [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] • ϒϩοΫ  (1..5).each { |i| puts 2 * i }  => 2 4 6 8 10 • ϋογϡͱγϯϘϧ  h1 = { :name => “Yohei”, :email => “a@b.c” }  h2 = { name: “Yohei”, email: “a@b.c” } ଞͷσʔλߏ଄

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ୈ4ষ Rails෩ຯͷRuby 4.4 Rubyʹ͓͚ΔΫϥε http://railstutorial.jp/ RailsνϡʔτϦΞϧ by ϠεϥϘ 3VCZPO3BJMTνϡʔτϦΞϧ ࣮ྫΛ࢖ͬͯ3BJMTΛֶ΅͏ .JDIBFM)BSUM ϚΠέϧɾϋʔτϧ

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• جຊΫϥε: String, Fixnum, Hash, Array, … • Ϋϥεͷ࡞Γํ • Ϋϥε֊૚ͷௐ΂ํ • Ϋϥεͷܧঝͷ࢓ํ • جຊΫϥεΛมߋͷ࢓ํ • Railsʹ͓͚ΔΫϥε֊૚ • ϢʔβʔΫϥεΛ࡞ͬͯΈΔ Rubyʹ͓͚ΔΫϥε

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͓ർΕ༷Ͱͨ͠

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ࢀߟ৘ใ

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Ruby ͷา͖ํ http://magazine.rubyist.net/?FirstStepRuby

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Ruby ͷา͖ํ - ֶशํ๏

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஍Ҭ Ruby ͷձ https://github.com/ruby-no-kai/ofﬁcial/wiki/RegionalRubyistMeetUp

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͓஌Βͤ

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RailsύεϙʔτΛ։࢝͠·͢!

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എܠ • Ωϟϯηϧ଴ͪͩͱ༧ఆཱ͕ͯͮΒ͍ :(  => ʮ”ͱΓ͋͑ͣਃ͠ࠐΈ” ͕ଟ͍…?ʯ • εΫϦʔϯΩϟετΛࣄલʹࢹௌ͍ͨ͠!  => ʮܾࡁ͕ηϛφʔ௚લͳͷͰ೉͍͠ʯ • ಉ͡ষΛԿ౓΋ࢀՃ͍ͨ͠!  => ʮಛʹɼݸผʹ࣭໰/૬ஊ͕͍ͨ͠ʯ

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ίΞͳࢀՃऀ͕ ֶश͠΍͍͢  ؀ڥʹ.

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ࢀՃඅͷ·ͱΊܾͯࡁϓϥϯ

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Ωϟϯηϧ଴ͪͰ΋ࢀՃՄೳ!

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ಈը͕ࣄલʹࢹௌͰ͖·͢

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ϑϦʔύεܗࣜ (࠶ԋࢀՃՄ)

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No content

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ڵຯ͕͋Ε͹ Co-Edo ·Ͱ :)

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ࠓޙͷਐΊํ • ࠓޙͷεέδϡʔϧ͸ίνϥ (དྷ೥Ҏ߱΋ެ։)  → ৄࡉ: http://railstutorial.jp/seminars • εΫϦʔϯΩϟετͷൢചΛ։࢝͠·ͨ͠ :)  → ৄࡉ: http://railstutorial.jp/screencasts • Ξϯέʔτͷ͝ճ౴ʹڠྗ͍ͩ͘͞  ίϝϯτཝʹURLΛష෇͚·͢ :)  ※ Ξϯέʔτʹճ౴Λૹ৴͢Δͱ,  ɹಛయಈըͷ৘ใ͕දࣔ͞Ε·͢.

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ୈ4ষ Rails෩ຯͷRuby #RailsϋϯζΦϯηϛφʔ http://railstutorial.jp/ RailsνϡʔτϦΞϧ by ϠεϥϘ 3VCZPO3BJMTνϡʔτϦΞϧ ࣮ྫΛ࢖ͬͯ3BJMTΛֶ΅͏ .JDIBFM)BSUM ϚΠέϧɾϋʔτϧ