Rails Developers Meetup

Transcript

1. 3BJMTͰ&$αʔϏεΛ
   θϩ͔Β࡞ͬͯΈͯ
   גࣜձࣾTQJDFMJGF
   $5045&&34ϓϩμΫτϚωʔδϟʔ੺দ༞ر
   

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2. 45&&34ʹ͍ͭͯ
   w ΦϦδφϧ5γϟπൢചαʔϏε
   w ը૾Ξοϓϩʔυ΍αʔϏε্ͷσβΠϯΤσΟλͰ5γϟπ
   ΛσβΠϯɾൢച
   w ઃఆͨ͠ൢചՁ֨ʹԠͯ͡஫จ͝ͱʹऩӹ͕ൃੜ
   

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3. 45&&34ʹ͍ͭͯ
   w ΦϦδφϧ5γϟπൢചαʔϏε
   w ը૾Ξοϓϩʔυ΍αʔϏε্ͷσβΠϯΤσΟλͰ5γϟπ
   ΛσβΠϯɾൢച
   w ઃఆͨ͠ൢചՁ֨ʹԠͯ͡஫จ͝ͱʹऩӹ͕ൃੜ
   

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4. νʔϜߏ੒
   w ϓϩμΫτϚωʔδϟʔ݉ΞϓϦέʔγϣϯΤϯδχΞ
   w Πϯϑϥ݉ΞϓϦέʔγϣϯΤϯδχΞ
   w σβΠφ
   

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5. 1E.ͱ։ൃऀ͕ಉҰਓ෺Ͱ͋ΔϝϦοτ
   w ҙࢥૄ௨ͷίετ͕େ෯ݮ
   w Ϗδωεͱ։ൃͱͰೝࣝͷҧ͍ͱ͍͏ͷ͕جຊతʹൃੜ͠ͳ
   ͍
   

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6. ೝࣝҧ͍ͷൃੜͱ͸
   w ྫ͑͹
   w Ϗδωεଆͷࢥ࿭ʮͱΓ͋͑ͣ.71ͱͯ͠ϦϦʔεͯ͠ػೳͱͯ͠ඞཁ͔֬
   ೝ͍ͨ͠ʯ
   w ։ൃଆͷࢥ࿭ʮͱ͘ʹԿ΋ݴΘΕͯͳ͍͠ɺ࡞ΓࠐΜͰ͠·͍͍ͬͯΜͩΖ
   ͏ʯ
   w Ϗδωεͱ։ൃͷར֐ͷෆҰகͱ͔΋͋Δ
   w Ϗδωε͸ച্΍ϦϦʔεεϐʔυΛؾʹ͢Δ͕ɺ։ൃଆ͸কདྷతʹࣗ෼ୡ
   ͕ۤ࿑͠ͳ͍͔Ͳ͏͔Λؾʹ͢Δ
   w ։ൃʮԾઆݕূ͕͏·͍ͬͨ͘Β࡞Γͳ͓࣌ؒ͢Λ࡞Δ͘ΕΔͱݴ͚ͬͨͲ
   ͍ͭ΋͘Εͳ͍΍Μ͚ʜʯ
   w ҆શࡦͰෛ࠴Λ࡞Γ͜·ͳ͍ํ਑ΛͱΓ͕ͪ
   

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7. ಉҰਓ෺ͷ৔߹
   w ෛ࠴ΛੵΉͱͯ͠΋ͲΕ͙Β͍ۤ࿑ͦ͠͏͔ɺϏδωεతʹ
   ࠓޙͲ͏͍ͨ͠ͷ͔ࣗ෼͕Θ͔͍ͬͯΔͷͰ൑அ͕ϥΫ
   w ۤ࿑͢Δͷ΋ࣗ෼ͳͷͰɺͦ͜Β΁Μʹର͢Δؾෛ͍͸͋·
   Γͳ͍
   

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8. ͱ͸͍͑ʜ
   w ΍͸ΓϢʔβʔͷߦಈ͕ࣗ෼ͱ૝ఆ͠ͳ͍΋ͷͩͬͨΓ͢Δ
   ͷͰɺ༧ఆ֎ͷ࢓༷มߋ͕ൃੜ͢Δ
   w 45&&34ͷ৔߹ɺ࠷ॳ͸γϯϓϧʹճͷ஫จͰͻͱͭͷαΠ
   ζ͔͠ങ͑ͳ͔ͬͨ
   w ࣗ෼ͷ෼Λങ͏෼ʹ͸ࣗ෼ͷαΠζ͚ͩങ͑Ε͹Α͍ͱࢥͬ
   ͨ
   w ͚ͩͲ૝ఆ֎ʹෳ਺αΠζΛങ͍͍ͨਓ͕ଟ͔ͬͨ
   w ͳΔ΄ͲͶ͍ͬͯ͏͜ͱͰ%#ͷߏ੒Λม͑ͯෳ਺αΠζߪೖ
   ͷϦϦʔεΛߦͬͨ
   

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9. ͭ·Γʜ
   w ߟ͑Δਓͱ࡞Δਓ͕ಉ͡Ͱ΋Ϣʔβʔ͕͍ΔҎ্͢΂ͯεϜʔ
   ζʹߦ͘Θ͚Ͱ͸ͳ͍
   w ࣗ෼ͻͱΓͩͱͦ͜Β΁Μͷ࢓༷มߋͷཧ༝ͱ͔ٕज़తͳΉͣ
   ͔͠͞΋Θ͔ΔͷͰೲಘײ͕͋Δ
   w ෳ਺ਓͷ৔߹ɺཧ༝͕։ൃʹ఻ΘΒͣ࢓༷มߋͷࢦ͚ࣔͩ఻Θ
   Δͱඃ֐ऀతͳؾ࣋ͪʹͳΓ͕ͪ
   w ͦ͜Β΁Μͷίϛϡχέʔγϣϯ͕͏·͍͔͘ͳ͍ͱۭؾ΋Θ
   Δ͘ͳΓ͕ͪ
   w ͜ͷลΓʹରͯࣗ͠෼΋ಛʹ౴͑Λ͍࣋ͬͯΔΘ͚Ͱ͸ͳ͍
   ͚Ͳɺҙࣝ͸͓ͯ͘͠ͱΑͦ͞͏
   

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10. 3BJMTͷ࿩
    w 3BJMT%FWFMPQFST.FFUVQͳͷͰ։ൃଆͷ࿩Λ
    w ͋·ΓίΞٕज़తͳ࿩͕͋ΔΘ͚Ͱ΋ͳ͍ͷͰτϐοΫ͸গ
    ͠෼ࢄؾຯʹͳΔ͔΋
    w ಛผͳʹ͔೉͍͜͠ͱΛ͍ͯ͠ΔΘ͚͡Όͳ͍ͷͰɺ͋Δҙ
    ຯ਎ۙͳ࿩୊ʹͳΔͱࢥ͏
    

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11. ։ൃʹ͓͍ͯߟ͍͑ͯͨ͜ͱ
    w ඼࣭ͱεϐʔυͷόϥϯεΛऔΓ͍ͨͱߟ͍͑ͯͨ
    w εϐʔυॏࢹ͗ͣ͢͠ɺ ࣗ෼ʹͱͬͯ
    ͋ͨΓ·͑ͷ͜ͱ͸
    ͋ͨΓ·͑ʹͪΌΜͱ΍Δ
    w ػೳݸผͷઃܭ͸͋Δఔ౓ͬ͘͟ΓͰ΋0,ɻ࣍ΠδΔػձ͕
    ͋Ε͹ͦͷ࣌ʹ௚͢
    w ٯʹશମͷઃܭํ਑͸ͳΔ΂͘ߟ͓͖͔͑ͯͨͬͨ
    

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12. σʔλϕʔεઃܭ
    w ͪΌΜͱਖ਼نԽͱ֎෦ΩʔΛ͸Δ
    w σʔλϕʔεͱσʔλͷෛ࠴͸ղফ͢Δͷ͕େมͳͷͰ࠷
    ௿ݶ͜Ε͙Β͍͸΍Δ
    w ͍Βͳ͍ςʔϒϧ΍΍Γ͍ͨ͜ͱͱ߹Θͳ͍ઃܭʹͳͬͨΒ
    ͪΌΜͱ௚͢
    w ΞΫηε਺͕ଟ͘ͳ͚Ε͹มߋʹରͯͦ͜͠·ͰγϏΞʹ
    ͳΔ͜ͱ΋ͳ͍
    w ͦΕΑΓ΋Α͘Θ͔ΒΜઃܭͷςʔϒϧ࢒͢ํ͕ࠔΔ
    

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13. σʔλϕʔεͷ7JFX
    w ਖ਼نԽ͍ͯ͘͠ͱ/ͷղফ΍+0*/ͷ਺͕ଟͯ͘3BJMT্ͷίʔ
    υͷݟ௨͕͠ΘΔ͘ͳΔ͜ͱ͕͋Δ
    w ͦͷͱ͖͸7JFXΛ༻ҙͯ͠ରॲ͢Δ
    w IUUQTHJUIVCDPNUIPVHIUCPUTDFOJD
    w 7JFXΛଟஈʹ͢Δͱ͋Δ7JFXͷߏ੒Λม͍͑ͨͱ͖ʹ໘౗ʹͳ
    ΔͷͰ஫ҙ
    w ࣅͨཧ༝ͰΧϥϜ௥Ճ࣌ʹ͜·ΔͷͰ7JFXʹ͸࠷௿ݶͷΧϥϜ
    Λࢦఆ͢Δ΄͏͕Α͍
    w ΞϓϦଆͱ%#ଆʹϩδοΫ͕෼͔ΕΔͷ͸ͪΐͬͱ೰ΈͲ͜Ζ
    

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14. ϚΠάϨʔγϣϯ
    w εΩʔϚͷมߋͱσʔλͷ౤ೖͷ؅ཧΛΘ͚ΔΑ͏ʹͨ͠
    w σʔλ౤ೖ͸IUUQTHJUIVCDPNIBSSZTUFDI
    TFFE@NJHSBUJPOͰ
    w εΩʔϚͷมߋʹIUUQTHJUIVCDPNBOLBOF
    TUSPOH@NJHSBUJPOTΛೖΕͯΈͨ
    w ةݥͳ%#มߋʹରͯ͠ܯࠂΛग़͢
    w ৭ʑษڧʹͳ͚ͬͨͲɺࠓճ͸ෆཁ͔ͩͬͨͳͱ΋ࢥ͏
    

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15. αʔϏεϨΠϠ
    w αʔϏεϨΠϠ͸ѱ͘ͳ͍͕ɺಋೖ౰ॳͷαʔϏεϨΠϠʹ
    ର͢ΔෆษڧͰඍົͳײ͡ʹ
    w "3ͷΠϯελϯεΛෳ਺࢖͏Α͏ͳॲཧ͸αʔϏεϨΠ
    ϠΈ͍ͨʹͯͨ͠
    

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16. ߪೖॲཧ·ΘΓΛαʔϏεΫϥεʹ
    w ߪೖॲཧ͸΍Δ͜ͱ͕ͨ͘͞Μ
    w ΫϨΧͷܾࡁॲཧɺ஫จ৘ใͷӬଓԽɺϢʔβʔ΁ͷϝʔϧ
    ௨஌ͳͲͳͲʜ
    w ѻ͏Ϟσϧ͕ଟ͍͠ɺ΍Δ͜ͱ΋ଟ͍ͷͰɺͦΕΛ·Δͬͱ
    αʔϏεΫϥε΁
    w ౰ॳ͸ίʔυ͕खଓ͖తʹࣗવͱͳΔͷͰͦΕ͸ͦΕͰϝϦο
    τ͕͋ͬͨ
    w ίʔυΛ࠶ར༻͢Δͱͳͬͨͱ͖ʹ࢖͍·Θ͕͠Ͱ͖ͣʹࠔ
    Δ͸Ίʹʜ
    

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17. Ͳ͏͢Ε͹Α͔ͬͨͷ͔
    w αʔϏεϨΠϠ͸ग़དྷΔݶΓബ͘͢Δ
    w ͦ͏͢Δͱ3BJMTͷ৔߹ɺίϯτϩʔϥʔʹॻ͚͹͍͍΍ͬ
    ͍ͯ͏ͷ΋ଟʑ͋Δ
    w υϝΠϯϞσϧͷઃܭྗΛ஁͑Δ
    

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18. ϑΥʔϜΫϥε
    w ਖ਼نԽ͢Δͱେମʹ͓͍ͯϑΥʔϜͱϞσϧ͕ʹͳΒͳ͍
    w ϑΥʔϜ͝ͱʹϑΥʔϜΫϥεΛ࡞Δͷ͕݁ہ͸ϥΫ
    w ࣮૷͸IUUQUFDINFEQFFSDPKQFOUSZ
    Λࢀߟʹ͢Ε͹େମ0,
    

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19. όϦσʔγϣϯΛͲ͜Ͱߦ͏͔
    w ͋ͱ͔ΒϑΥʔϜΫϥεΛಋೖͨ͠ͷͰ౰ॳ͸ϞσϧʹόϦ
    σʔγϣϯ͕͋ͬͨ
    w ϑΥʔϜΫϥεͷόϦσʔγϣϯ͸஋ΛϞσϧͷΠϯελϯ
    εʹ౉ͯ͠ϞσϧͰߦ͏
    

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20. class Form
    def sync
    @model_a = ModelA.new(foo: @foo, bar: @bar)
    @model_b = ModelB.new(hoge: @hoge)
    end
    def valid?
    sync
    @model_a.valid? && @model_b.valid?
    end
    end
    όϦσʔγϣϯΛͲ͜Ͱߦ͏͔
    

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21. ϑΥʔϜΫϥεʹ௚઀ॻ͘ํ޲ʹγϑτ
    w ਓ਺΋গͳ͍ͷͰϞσϧ௚઀ݺΜͰόϦσʔγϣϯ͞ΕͣࣄނΔ
    ͱ͍͏ͷ΋গͳ͍
    w ϑΥʔϜ࣮૷͢Δͱ͖ʹϑΥʔϜ୯ҐͰόϦσʔγϣϯߟ͑Δํ
    ͕ͳΜ͔ϥΫ
    w ϞσϧͰόϦσʔγϣϯ͢ΔͱࠔΔέʔε΋͋Δ
    w ಛఆΧϥϜ͸ଞͷΧϥϜಉ࢜ͷܭࢉʹΑͬͯຒΊΒΕΔ৔߹
    w όϦσʔγϣϯ࣌ʹܭࢉ͢ΔίετΛࢧ෷͏ඞཁ͕͋Δ
    w ·ͨϑΥʔϜͷ஋ΛόϦσʔγϣϯ͍ͨ͠ͷͰϑΥʔϜͰͦ
    ͜Λ͋·Γؾʹͨ͘͠ͳ͍
    

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22. class Form
    def sync
    @model = ModelA.new(foo: @foo, bar: @bar)
    end
    def valid?
    @model.valid? # hogeΛೖΕͯͳ͍ͷͰvalidʹͳΒͳ͍
    end
    def save!
    hoge = (@foo + @bar) * rate
    @model.hoge = hoge
    @model.save!
    end
    end
    

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23. ϑΥʔϜΫϥεʹ௚઀ॻ͘ํ޲ʹγϑτ
    w ͱ͸͍͑΍͸ΓϞσϧʹόϦσʔγϣϯ͕ͳ͍ͷ͸ʜ
    w ͋ͱࣅͨΑ͏ͳϑΥʔϜͰࣅͨΑ͏ͳόϦσʔγϣϯΛॻ͘
    ͜ͱ΋ଟʑ
    w όϦσʔγϣϯΛ͍͍ײ͡ʹ·ͱΊͨϞδϡʔϧΛ࡞Δͱ
    Α͍ͷ͔ͳʜ
    

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24. ·ͱΊ
    w ϓϩμΫτϚωʔδϟʔͱ։ൃऀͷҙࢥૄ௨͸େࣄͩΑ
    w ͏ͪͷ৔߹݉຿Ͱͦ͜͸εΩοϓ͚ͨ͠Ͳɺݱ࣮໰୊ͦΕΛଓ
    ͚͍ͯ͘ͷ͸ͳ͔ͳ͔೉͍͠
    w 3BJMT։ൃʹ͓͍ͯେ·͔ͳݪଇΛक͍ͬͯ͘ͷ͕جຊ
    w ݪଇʹ͍ͭͯ͸ษڧ͠Α͏
    w ҙਤతʹखΛൈ͘ͱ͔Ͱͳ͍ݶΓɺ্ݶ͕ࣗ෼ͷ࣮ྗͰܾ·Δ
    w ͱ͸ݴ࣮͑૷Ϩϕϧͩͱܾ·Γख͕ͳ͍͜ͱ΋ଟ͍
    w ͦͷลͷࢼߦࡨޡ͸ڪΕͳ͍
    

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