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Ϋϥ΢υ͇εϚϑΥ࣌୅ ͷ3VCZPO3BJMTೖ໳

ࠓ೔ͷ͓࿩ ࣗݾ঺հ 3VCZݴޠͷ঺հ 3VCZPO3BJMTͷ঺հ 3VCZPO3BJMTͰ؆୯ͳ8FCΞϓ ϦΛ࡞Δ 8FCΞϓϦΛΫϥ΢υʹσϓϩΠ 2

ࠓ೔ͷ͓࿩ ΞϓϦΛεϚϑΥ༻ϒϥ΢βʔʹର Ԡ͢Δ 8FCΞϓϦΛεϚϑΥΞϓϦͱ࿈ ܞ͢Δ 3BJMTͱ5%% ͕࣌ؒ͋Ε͹ 3

ࣗݾ঺հ

٢ా༟ඒ ٢ా༟ඒ :PTIJEB:VVNJ ༗ݶձࣾ&:0⒏DF IUUQXXXFZP⒏DFDPN #MPHIUUQEIBUFOBOFKQZVVN 5XJUUFS!ZVVNJ 5

աڈ େֶͷ޻ֶ෦ଔۀ ૊ࠐܥͷձࣾʹब৬ $"%ͷϕϯνϟʔاۀʹస৬ $"%ίΞ෦෼ͷ։ൃ ਤ໘؅ཧγεςϜ౳Ͱ4&ɾϚωʔδϝϯτΛ ܦݧ γϦίϯόϨʔΛ๚໰ͨ͠Γɺถࠃਓͱ࢓ࣄΛ ܦݧ 6

&:0⒏DF ೥ʹಠཱ ։ൃ 8FC 3VCZPO3BJMT J1IPOF ڭҭ ͓٬༷ͷ໰୊Λղܾ͢Δ*5ڭҭ 3VCZPO3BJMT
J1IPOF 7

&:0⒏DF։ൃ 8FC 8 w ΞδΞϦʔάΞΠεϗοέʔ wIUUQXXXBMIPDLZKQ wνʔϜɾબखͷ੒੷ूܭ w1FSMಠࣗϑϨʔϜϫʔΫ wΞϩϋύʔΫ wαʔϏεऴྃ
w4/4 w+BWB4FBTBS wωοτγϣοϓ wIUUQXXXCPSPDPKQ w3BJMTK2VFSZ w34QFD$VDVNCFS w๖͑τʔΫ ੠༏ͱ4LZQF Ͱ͓࿩ wαʔϏεऴྃ w੠༏ͱͷձ࿩༧໿༧໿ w3BJMTK2VFSZ w34QFD

&:0⒏DF։ൃ J1IPOF 9 ֆຊΞϓϦ J1IPOFJ1BE 5XFFUͳ͏ ແྉ ڭ͑ࢠ͕࡞ͬͨΞϓϦ

&:0⒏DFڭҭ 10 ίʔε໊ ೔਺ ಺༰ ޮՌ අ༻ 3VCZPO3BJMTೖ ໳ίʔε ೔
w3VCZݴޠೖ໳ w3VCZPO3BJMTೖ໳ w3VCZPO3BJMT࣮श w3VCZ3VCZPO3BJMTͷ֓ཁ͕ཧղͰ͖Δ wܦݧ๛ͳ։ൃऀͰ͋Ε͹ɺॻ੶౳Λࢀߟʹ 3VCZPO3BJMTͷ։ൃ͕࢝ΊΒΕΔ ສԁਓ ໊Ҏ্Ͱड ߨ͍ͩ͘͞ 3VCZPO3BJMTඪ ४ίʔε ೔ w3VCZݴޠೖ໳ɺ3VCZ࣮ફϓϩάϥϛϯά w3VCZݴޠ࣮श w3VCZPO3BJMTೖ໳ɺ3VCZPO3BJMT࣮ફ։ൃ w3VCZPO3BJMT࣮श w3VCZ3VCZPO3BJMT͕ཧղͰ͖Δ w3VCZPO3BJMT։ൃϓϩδΣΫτʹϓϩάϥ Ϛʔͱͯ͠ࢀՃͰ͖Δ ສԁਓ 3VCZPO3BJMTప ఈίʔε ೔ w3VCZݴޠೖ໳ɺ3VCZ࣮ફϓϩάϥϛϯά w3VCZݴޠ࣮श w3VCZPO3BJMTೖ໳ɺ3VCZPO3BJMT࣮ફ։ൃ w3VCZPO3BJMT࣮श w࣮༻ΞϓϦͷ։ൃԋश w3VCZ3VCZPO3BJMT͕ཧղͰ͖Δ w3VCZPO3BJMTΛ࢖ͬͨϓϩδΣΫτͷઃ ܭɾ։ൃ͕࢝ΊΒΕΔ ສԁਓ 3VCZPO3BJMT

&:0⒏DFͷڭҭ 11

ࣥච 12

3VCZ,BJHJͰεϐʔν ੒ޭ͢Δ3VCZڭҭͷϓϥΫςΟεʯ 13

3VCZ8PSME$POGFSFODF ʰ3VCZ։ൃऀΛ૿΍ͨ͢Ίͷڭҭʹ͍ͭ ͯʵ೥ؒͷ3VCZڭҭͰಘͨ஌ݟʱ 14

8FCϝσΟΞ΁ͷࣥච 15

3VCZݴޠͷ঺հ

3VCZݴޠ ೔ຊਓ։ൃऀ·ͭ΋ͱΏ͖ͻΖࢯʹ Αͬͯ։ൃ͞ΕͨϓϩάϥϜݴޠɻ ੈքதͰ࢖ΘΕ͍ͯΔɻ ೥ΑΓΦʔϓϯιʔεͱͯ͠ެ ։ɻ -JTQ 4NBMMUBML 1FSMͳͲաڈͷݴޠ ͷྑ͍෦෼Λόϥϯεྑ͘औΓೖΕͯ
͍Δɻ 17 ࣸਅ͸XJLJQFEJBΑΓ

ओཁͳݴޠͷྺ࢙ͱؔ࿈ 18

3VCZݴޠͷΩʔϫʔυ 19 ϓϩάϥϛϯάΛָ͘͢͠Δݴޠ ·ͭ΋ͱΏ͖ͻΖஶʮΦϒδΣΫτࢦ޲εΫϦϓτݴޠ3VCZʯΑΓ ͪΐͬͱେ͛͞ʹදݱ͢Δͱɺ3VCZͷڀۃ ͷ໨త͸ɺ༗ݶͷਓੜʹ͓͍ͯϓϩάϥϛ ϯάͷָ͍͠෦෼ʹͰ͖Δ͚ͩूதͰ͖Δ Α͏ʹॿ͚Δ͜ͱͰ͢ɻ

3VCZॲཧܥ .3* $3VCZ ɿ·ͭ΋ͱࢯ͕ͭͬͨ͘ݩ૆ +3VCZɿ+BWBͰ࡞ΒΕ+7.্Ͱಈ࡞͢Δ 3VCJOJVTɿ3VCZ --7.Ͱ࡞ΒΕͨॲཧܥ *SPO3VCZɿ/&5؀ڥͰಈ࡞͢Δ .BD3VCZɿ.BD049ʹಛԽͨ͠ॲཧܥ N3VCZ૊ΈࠐΈ༻3VCZ
αϒηοτ 3VCZ.PUJPOJ04։ൃ༻3VCZίϯύΠϥʔ 20

3VCZͷόʔδϣϯ 9ɿੲʑ 9ɿաڈ ࡫ాߒҰࢯͷ࡞ͬͨ7.ΛίΞʹ ࠾༻͠ߴ଎Խ ଟݴޠ ./ Խ 3VCZ4QFD 3VCZඪ४࢓༷
9ݱࡏ 21

3VCZPO3BJMT։ൃ؀ڥͷબ୒ 22 3BJMT)PTUJOH IUUQSBJMTIPTUJOHDPN ΑΓ 3VCZɺ3VCZPO3BJMTڞʹ6OJYจԽʹࠜ͟͠ ͓ͯΓɺҰ෦ͷϥΠϒϥϦʔ͸8JOEPXTͰ͸ ಈ͔ͳ͍ 8JOEPXTͰ΋جຊͷֶशఔ౓ʹ͸࢖͑Δ

3VCZͷΠϯετʔϧ .BD -JOVY DPOpHVSF NBLF NBLFJOTUBMM SCFOWෳ਺όʔδϣϯͷ੾Γ׵͑ 8JOEPXT IUUQSVCZJOTUBMMFSPSH 7.Λ࢖͍-JOVYΛΠϯετʔϧ
23

3VCZ 3BJMT Πϯετʔϧ৘ใ IUUQSFENJOFFZP⒏DFOFU QSPKFDUTSBJMTXJLJ ࣌ʑߋ৽ IUUQRJJUBDPN ݹ͍هࣄ͸஫ҙ
IUUQTUBDLPWFSqPXDPNτϥϒ ϧରࡦʹ͸͓קΊ 24

3VCZݴޠ௒ೖ໳

ಈతϓϩάϥϛϯάݴޠ ίϯύΠϧ౳͸ແ͘ɺ௚͙ʹ࣮ߦͰ ͖Δ JSCϓϩάϥϜΛॻ͔ͳͯ͘΋ 3VCZΛࢼͤΔίϚϯυ 26 % irb! > 2
+ 3! => 5

ಈతܕ෇͚ σʔλʹܕ͕͋Δ͕ɺม਺ʹ͸ܕ͕ͳ͍ ม਺ͷએݴ͸ෆཁ 27 a = 1! pus a! a
= “ABC”! puts a! a = [1,2,3]! puts a

σʔλ ଞͷݴޠͱಉ͘͡ ੔਺ɺ࣮਺ɺจࣈྻʜ ഑ྻɺϋογϡʜ γϯϘϧ OBNF ໊લࣗ਎Λද͢σʔλ ϋογϡͷΩʔͱͯ͠ྑ͘࢖ΘΕΔ 28

ࣜ ଞͷݴޠͱ΄΅ಉ͡ 29 a = 2 + (3 * 4)!
s = “abc” + “def”! b = a > 20! x += 3! n++ ++ɺ-- ͸ແ͍

੍ޚจ จ๏͸ҧ͏͕ߟ͑ํ͸ಉ͡ ؆ܿͳจ๏ 30 if a > 0! b =
1! else! b = 0! a = -a! end s = 0! while n > 0! s = s + n! n = n - 1! end

ؔ਺ ϝιου ؆ܿͳจ๏ 31 def fact(n)! if n == 0!
1! else! fact(n - 1) * n! end! end n = fact(5)! m = fact 4

ΦϒδΣΫτࢦ޲ 32 จ๏͸ҟͳΔ͕ɺجຊ͸+BWB౳ͱ΄΅ಉ͡ class TwoNumber! def initialize(a, b)! @a =
a; @b = b! end! def add! @a + @b! end! end tw = TwoNumber.new(3, 4)! a = tw.add()

ͨͩ͠ɺ+BWBͱҧ͏ͱ͜Ζ΋͋Δ શ͕ͯΦϒδΣΫτ ΦʔϓϯΫϥε NJYJO NPEVMF 33 ΦϒδΣΫτࢦ޲

શ͕ͯΦϒδΣΫτ ੔਺΋ΦϒδΣΫτ 34 i = 123! s = i.to_s()! s
= String.valueOf(i);

طଘͷΫϥεʹϝιουΛ௥Ճɾม ߋͰ͖Δ 35 ΦʔϓϯΫϥε class String! def double! self *
2! end! end

࣮૷Λڞ༗ग़དྷΔ 36 NJYJO module Double! def double! self * 2!
end! end class String! include Double! end! class Number! include Double! end 3.double # => 6! “ab”.double # => “abab”

ࣗ༝౓͕ߴ͍ ϝλϓϩάϥϛϯά %4- ϞϯΩʔύον ΦʔϓϯΫϥε͸΍΍ةݥͳͷͰ SFpOFNFOUTͰରԠ 37 ΦϒδΣΫτࢦ޲

ؔ਺ܕݴޠ͔ΒͷӨڹ ΠςϨʔλ ϒϩοΫ શͯͷࣜɺจ͕஋Λ࣋ͭ ஗ԆධՁ 38

ΠςϨʔλʔ &OVNFSBCMF 39 a = [1,2,3,4]! b = []! for
n in a! if n > 2! b << n ! end! end a = [1,2,3,4]! b = a.select {|n| n > 2}

ϒϩοΫ 40 def times(n)! for i in 1..n! yield(n)! end!
end > times(3) {|n| puts n }! 1! 2! 3

υΩϡϝϯτ ҉ه͢Δඞཁ͸͋Γ ·ͤΜ͕ɺҰ౓શͯ ໨Λ௨͓ͯ͘͠ͱྑ ͍ͱࢥ͍·͢ɻ 41

ϥΠϒϥϦʔ ૊ΈࠐΈϥΠϒϥϦʔ ఴ෇ϥΠϒϥϦʔ 3VCZ(FNT 42

3VCZPO3BJMTͷ঺հ

3VCZPO3BJMTͱ͸ Φϥϯμͷ%BWJE)FJOFNFJFS )BOTTPO %)) ࢯʹΑͬͯ࡞ΒΕͨ ϑϨʔϜϫʔΫɻ ൴͕ڞಉܦӦ͢Δձࣾ#BTFDBNQ TJHOBMT ͷαʔϏε։ൃ༻ʹ࡞ͬͨ ΋ͷΛΦʔϓϯιʔεͱͯ͠೥ʹ
ެ։ɻ +BWBͷഒͷੜ࢈ੑͱ͍͏ηϯηΠγϣ φϧͳΩʔϫʔυͰ࿩୊ʹͳΔɻ 44 ࣸਅ͸XJLJQFEJBΑΓ

45 ʮ++6($SPTT$PNNVOJUZ$POGFSFODF'BMMͷʰ+BWB͔Β3VCZ΁ʱɾΞϯυɾφ΢ʯ ΑΓɺҰ෦Ճච Patterns of Enterprise Application Architecture Extreme Programming
Explained -- Embrace Change ୡਓϓϩάϥϚʔ γεςϜ։ൃͷ৬ਓ͔Β໊ঊ΁ͷಓ 3VCZPO3BJMTͷഎܠ Programming Ruby: The Pragmatic Programmer's Guide

&:0⒏DF Ͳ͏ͯ͠3VCZ͸ੈքͰ࢖ΘΕΔ Α͏ʹͳͬͨͷ͔ʁ 46 Dave Thomas ӳޠͷ OFXTHSPVQ ΍XFC

3VCZPO3BJMTͷΩʔϫʔυ ৘ใͷॏෳ͸มߋͷࠔ೉͞Λ૿େ͠ಁ໌ ੑΛݮগͤ͞ɺෆҰகΛੜ͡ΔՄೳੑʹ ͭͳ͕ΔͨΊɺॏෳ͢Δ΂͖Ͱͳ͍ɻ 47 %3: %POUSFQFBUZPVSTFMG

3VCZPO3BJMTͷΩʔϫʔυ ઃఆΑΓ΋ن໿ ϧʔϧʹଇΔࣄͰɺ൥ࡶͳઃఆΛॻ͔ͳ ͯ͘΋Α͍ɻ 3BJMTͱ͍͏໊લʹ͸ʮ%))ͷෑ͍ͨϨʔ ϧʹ৐ͬͯߦ͚͹ߴ଎ʹΞϓϦ͕ߏஙग़ དྷΔʯͱ͍͏ҙຯ͕ࠐΊΒΕ͍ͯΔɻ 48 $P$ $POWFOUJPOPWFS$POpHVSBUJPO

3VCZPO3BJMTͷ࣮૾ 49

ຊ౰ʹ+BWBͷഒͷੜ࢈ੑʁ ࡞੒͢ΔΞϓϦέʔγϣϯͷछྨ΍ ن໛ʹ΋ΑΓ·͕͢ɺ̎ʙ̑ഒ͘Β ͍ͱݴΘΕ͍ͯ·͢ɻ ·ͨɺ+BWB ୈҰੈ୅ϑϨʔϜϫʔΫ ͱ 3VCZPO3BJMT ୈೋੈ୅ϑϨʔϜϫʔΫ
Ͱ͸։ൃͷελΠϧ΋ҧ͍·͢ɻ 50

+BWB ୈҰੈ୅ϑϨʔϜϫʔΫ ͷ ։ൃελΠϧ ΞʔΩςΫνϟʔͷܾఆ ߴ͍ٕज़εΩϧ ࣮຿ܦݧ ઃܭηϯε 51 ࡉ෼Խ͞Εͨ࢓༷
ͷ࣮૷ ௿͍ٕज़εΩϧ ୯७࡞ۀత ΞʔΩςΫτ ϓϩάϥϚʔ ϓϩάϥϚʔ ϓϩάϥϚʔ ϓϩάϥϚʔ ϓϩάϥϚʔ ϓϩάϥϚʔ ϓϩάϥϚʔ ϓϩάϥϚʔ ϓϩάϥϚʔ ϓϩάϥϚʔ ϓϩάϥϚʔ ϓϩάϥϚʔ ϓϩάϥϚʔ ϓϩάϥϚʔ ϓϩάϥϚʔ ϓϩάϥϚʔ ϓϩάϥϚʔ ϓϩάϥϚʔ ϓϩάϥϚʔ ϓϩάϥϚʔ ࢓༷ॻ น

3VCZPO3BJMTΛ࢖ͬͨඪ४ తͳ։ൃελΠϧ 52 ϓϩάϥϚʔ ϓϩάϥϚʔ ϓϩάϥϚʔ ϓϩάϥϚʔ ࢓༷ॻ େ͖͘ͳ͍νʔϜ தڃҎ্ͷٕज़εΩϧ
શһͰΞʔΩςΫνϟʔ Λܾఆ શһͰ࣮૷ গਓ਺ͳΒॳڃऀͷࢀՃ ΋̤̠

ॳ৺ऀͰ΋࢖͍͜ͳͤΔͷʁ ΄΅/0 3VCZ΋3VCZPO3BJMT΋࢖͍͜ͳ͢ ʹ͸தڃऀҎ্ͷεΩϧ͕ඞཁͰ͢ɻ 3BJMT͸ΦϒδΣΫτࢦ޲΍ϝλϓϩά ϥϛϯά͕ଟ༻͞Ε͓ͯΓɺྑ͍γε ςϜΛ࡞Δͷ͸ॳ৺ऀͰ͸೉͍͠ɻ 53

+BWB͔Β3VCZ΁ ʮ+BWB͔Β3VCZ΁ʯͱ͍͏ ຊ͕຋༁͞Εͨɻ ৽͍ٕ͠ज़ͷੜΈग़͞ΕΔϓ ϥοτϑΥʔϜ͕+BWB͔Β 3VCZ΁ͱҠΓͭͭ͋Δɻ "KBY ϚογϡΞοϓ 3&45 #%%
54 ʮ+BWB͔Β3VCZ΁ʯ ΦϥΠϦʔɾδϟύϯ

+BWB͸ഇΕͯશͯ3VCZʹͳͬ ͯ͠·͏ͷ͔ʁ 55 Java Ruby ͔͍ͨɺ҆ఆ͕ٻΊΒΕΔ ॊೈɺૉૣ͍มԽ͕ٻΊΒΕΔ Java Ruby ΋ͪΖΜ/0

3VCZPO3BJMTͷόʔδϣϯΞοϓ ʙ೥ʹҰ౓ͷϝδϟʔόʔδϣϯ Ξοϓ ͦͷؒɺ਺ճͷϚΠφʔΞοϓσʔτ ྑ͘ͳΔͷͰ͋Ε͹ɺଟগͷޓ׵ੑ͸ ແࢹ 56

3VCZPO3BJMTೖ໳

ࠓճͭ͘ΔΞϓϦ ը૾4/4ͷΑ͏ ͳ΋ͷ 58

ίϚϯυ ίϚϯυ ͱΤσΟλʔ Λ࢖͍։ൃ IFMQΛࢦఆ͢Ε͹ϔϧϓ͕දࣔ͞ΕΔ ओͳίϚϯυ SBJMTίʔυ਽ܗ࡞੒ɺ࣮ߦ SBLF։ൃ࣌ͷࡶ༻ CVOEMFHFNϥΠϒϥϦʔͷ؅ཧ
59

։ൃͷྲྀΕ SBJMTOFXͰϓϩδΣΫτΛ࡞੒ SBJMTHͰίʔυͷ਽ܗΛ࡞੒ SBLFECNJHSBUFͰςʔϒϧΛ࡞੒ SBJMTTͰαʔόʔΛىಈ
ίʔυͷมߋɾ௥Ճ ΁໭Δ 60

SBJMTίϚϯυ rails new ϓϩδΣΫτ! ৽نϓϩδΣΫτͷ࡞੒ rails g ςʔϒϧ ΧϥϜ:ܕ …!
ςʔϒϧͱͦΕΛѻ͏ίʔυͷ࡞੒ rails s! αʔόʔͷىಈ rails c! ։ൃίϯιʔϧ 61

62 BQQϓϩάϥϜɺৄࡉ͸࣍ϖʔδ CJO։ൃπʔϧ MJCϥΠϒϥϦʔ DPOpHઃఆ ECσʔλϕʔεؔ܎ QVCMJDελςΟοΫͳ)5.-ͳͲ TQFD UFTUςετίʔυ WFOEPS͍Ζ͍Ζ
ྺ࢙తͳཧ༝ MPHϩάϑΝΠϧ UNQҰ࣌తͳϑΝΠϧͳͲ (FNpMFHFNϥΠϒϥϦʔͷ؅ཧ ΞϓϦͷσΟϨΫτϦʔߏ଄

63 BQQͷσΟϨΫτϦʔߏ଄ BTTFUT$44 +BWB4DSJQU ը૾ DPOUSPMMFSTίϯτϩʔϥ IFMQFSTϔϧύʔɺදࣔͷิॿ NPEFMTϞσϧ NBJMTϝʔϧίϯτϩʔϥ
WJFXTදࣔςϯϓϨʔτ MBZPVUTදࣔͷ࿮૊Έ ίϯτϩʔϥ୯ҐͷςϯϓϨʔτ

.7$ .PEFMۀ຿ϩδοΫɺܭࢉͳͲɺॲཧͷຊ࣭ 7JFXදࣔ $POUSPMॲཧͷྲྀͷ੍ޚ 64

ϚΠάϨʔγϣϯNJHSBUJPO 3BJMTͰ͸ςʔϒϧͷ࡞੒ɾมߋ΋ίʔυͱ ͯ͠؅ཧ͍ͯ͠Δ SBLFίϚϯυͰϚΠάϨʔγϣϯͷऔফ΍ ࠶࣮ߦ͕ग़དྷΔ 65 class CreatePosts < ActiveRecord::Migration!
def change! create_table :posts do |t|! t.string :name! t.string :photo! t.text :caption! ! t.timestamps! end! end! end

3&45GVMͳίϯτϩϥʔ 63-͸ϦιʔεΛݱ͢ ૢ࡞͸ϝιου (&5 1045 1"5$) %&-&5& Λ࢖͏ SBLFSPVUFTίϚϯυͰදࣔ 66
ૢ࡞ ϝιου 63- ॲཧ Ұཡ (&5 IUUQTFSWFSUPEPT JOEFY औಘ (&5 IUUQTFSWFSUPEPT TIPX ߋ৽ 1"5$) IUUQTFSWFSUPEPT VQEBUF ొ࿥ 1045 IUUQTFSWFSUPEPT DSFBUF ࡟আ %&-&5& IUUQTFSWFSUPEPT EFTUSPZ

υΩϡϝϯτ ӳޠͰ͕͢׳ΕͯԼ ͍͞ FYBNQMFTͷίʔυ Λ࠷ॳʹಡΉͱྑ͍ ͱࢥ͍·͢ 67

3BJMTΞϓϦͷσόοΫ ΤϥʔϝοηʔδΛ͔ͬ͠ΓಡΉ ϩάϑΝΠϧΛಡΉ ϩάϑΝΠϧʹσόοΫ༻৘ใΛॻ ͖ग़͢MPHHFSEFCVH B SBJMTDPOTPMFͰࢼ͢ɻ 68

3BJMTͷศརͳػೳ ೖྗσʔλͷνΣοΫWBMJEBUJPO ؔ࿈͢Δςʔϒϧͷࢀর ϔϧύʔ DBMMCBDL CFGPSFBDUJPO 69

ςʔϒϧͷؔ࿈ 3BJMTͷϞσϧ͸ؔ࿈Λѻ͏ࣄ͕ग़དྷ·͢ ͜͜Ͱ͸VTFSTQPTUTʹ̍ɿଟͷؔ܎Λهड़ 70 class User < ActiveRecord::Base! has_many :posts!
end class Post < ActiveRecord::Base! belongs_to :user! end

ࠃࡍޠԽJO JOUFSOBUJPOBMJ[BUJPOJO 3BJMT͸࠷ॳ͔ΒࠃࡍޠԽ͞Ε͍ͯΔ Τϥʔϝοηʔδ౳͸࠷ॳ͸ӳޠ͔͠ ೖ͍ͬͯͳ͍ ଟࠃޠΛѻ͏αΠτ΋࡞Γ΍͍͢ 71

(FNϥΠϒϥϦʔ

(FNϥΠϒϥϦʔ Ұൠతͳػೳ͸͢Ͱʹ(FNͱͯ͠ެ։͞ Ε͍ͯΔࣄ͕ଟ͍ (FNΛ୳͢ʹ͸SVCZUPPMCPY͕໾ཱͭ ͍͍ͨͯ(JU)VCʹஔ͍ͯ͋Δ ͪΌΜͱϝϯς͞Ε͍ͯΔ͔ɺྑ͍ίʔ υ͔ΛνΣοΫͨ͠ํ͕ྑ͍ 73

(FNϥΠϒϥϦʔͷར༻ 74 (FNpMFʹϥΠϒϥϦʔΛࢦఆ CVOEMFͰΠϯετʔϧ SBJMTHͰઃఆͳͲ
αʔόʔͷ࠶ىಈ ίʔυͷ௥Ճɾมߋ

Α͘࢖͏(FN 75 (FN ػೳ ,BNJOBSJ Ұཡͷϖʔδϯά $BSSJFS8BWF ը૾ͳͲͷΞοϓϩʔυ 1BQFSDMJQ ը૾ͳͲͷΞοϓϩʔυ
0NJOJ"VUI 5XJUUFS 'BDFCPPLͳͲͷΛ࢖͏ϩάΠϯೝূ %FWJTF ࣗલ%#Λ࢖͏ϩάΠϯೝূɺଟػೳ 3BJMT"ENJO 3%#σʔλͷ؅ཧը໘

5XJUUFS#PPUTUBQ σβΠϯྗͷແ͍։ൃऀ Ͱ΋ࠓ෩ͳ8FC͕࡞Ε Δ$44 +4 5XJUUFSͷσβΠφʔ͕ ࡞੒ͨ͠ 3BJMTͰ௚͙ʹ࢖͑Δ(FN ͕͋Δ
77

Ϋϥ΢υJTԿ 79

Ϋϥ΢υͷ෼ྨ 4BB4 4PGUXBSFBTB4FSWJDF 1BB4 1MBUGPSNBTB4FSWJDF *BB4 )BB4 *OGSBTUSVDUVSFBTB4FSWJDF 80
ਤ͸8JLJQFEJBΑΓ

Ϋϥ΢υͷ෼ྨ ΞϓϦέʔγϣϯ $3. &31 .BJM 0⒏DF ϓϥοτϑΥʔϜ 04 3%# .JEEMFXBSF
Πϯϑϥ $16 %JTL /FUXPSL 81 ਤ͸8JLJQFEJBΑΓ

4BB4 1BB4 *BB4 )BB4 Ϋϥ΢υͷ෼ྨ 82 ਤ͸8JLJQFEJBΑΓ

)FSPLVͱ͸ ݩʑ3VCZPO3BJMTʹಛԽͨ͠ 1BB4ͩͬͨ ؆୯ʹΞϓϦΛ഑ஔͰ͖Δ ؆୯ʹεέʔϧͰ͖Δ ແྉτϥΠΞϧ "84Λ࢖͍ͬͯΔ 4BMFTGPSDFͷࢠձࣾ 3VCZ։ൃऀΛޏ͍ͬͯΔ .BU[ɺ࡫ాɺதా
83

)FSPLVσϓϩΠखॱ IFSPLVπʔϧͷμ΢ϯϩʔυɾΠϯετʔϧ (FNpMFͷमਖ਼ 3. bundle install! 4. heroku
create! 5. git commit! 6. git push heroku master! 7. heroku run rake db:migrate 84

"84౳΁ͷσϓϩΠखॱ 85 "84ʹαʔόʔΛ࡞੒ αʔόʔʹ3VCZ 3%#ʜͷΠϯετʔϧɻ ͕͜͜େมʂ࠷ۙ͸$IFG౳ͰࣗಈԽ͢Δ DBQJTUSBOPͷΠϯεʔϧ
DBQJTUSBOPͷઃఆϑΝΠϧ࡞੒ɾมߋ 5. git commit! 6. git push origin master! 7. cap deploy! ্ख͘ߦ͔ͳ͚Ε͹ ΁໭Δ

*BT4WT1BT4 )FSLVͷΑ͏ͳ1BT4Λ࢖͑͹Πϯ ϑϥܥΤϯδχΞΛޏΘͳͯ͘΋҆ ৺ͯ͠αʔϏεΛ্ཱͪ͛ΒΕΔɻ ͨͩ͠ɺ1BT4͸*BT4ΑΓίετ͕ ͔͔Δ 86

.PCJMF'JSTU

.PCJMF'JSTU εϚϑΥ΍λϒϨοτͷ਺͸1$Λ ௒͑ͨେ͖ͳࢢ৔ͳͬͨ 88 IUUQXXXTMJEFTIBSFOFU CHFCFBΑΓ

εϚϑΥ΁ͷରԠํ๏ 8FCΞϓϦʹεϚϑΥ༻ͷ$44 +BWB4DSJQU Λ௥Ճ ωΠςΟϒΞϓϦΛ࡞Γ"1* +40/ Ͱ௨৴͢Δ 89

ࠓճͭ͘ΔΞϓϦ 90 4BGBSJ XFC ωΠςΟϒΞϓϦ

5XJUUFS#PPUTUBQ Ϩεϙϯγϒ8FCσβΠϯ 91

3VCZPO3BJMTͱεϚϑΥ 3BJMT͸όʔδϣϯ ೥ ౰͔࣌Β 8FC"1*ɺϦονΫϥΠΞϯτ޲͚ͷ+40/ 9.-Ͱͷσʔλ΍ΓऔΓ͕ग़དྷ͍ͯͨ 92 αʔόʔ 3VCZPO3BJMT +40/
9.- +40/ 9.-

+40/ͷग़ྗ Ϩεϙϯε͸)5.-Ҏ֎ʹ+40/౳Λग़ྗͰ ͖Δ 93 ! Name:! <%= @post.user.name %>! !
! Caption:! <%= @post.caption %>! json.extract! @post, :id, :name, :caption TIPXIUNMFSC TIPXKTPOKCVJMEFS

3BJMT⁶J04ϥΠϒϥϦʔ 94 0CKFDUJWF3FTPVSDFࢮ๢ ଞʹ΋͍Ζ͍Ζʜ

5%% ը૾͸IUUQNFUBPIMPIOFUHPJOHUEEΑΓ

96 ίʔυͷ࡞੒ ςεςΟϯά NO YES ςετίʔυͷ࡞੒ ίʔυͷ࡞੒ NO YES ςετίʔυͷ࣮ߦ
ઃܭ ઃܭ σόοΫ ैདྷͷ։ൃελΠϧ ̩̙̙ͷ։ൃελΠϧ ͜͜Λ܁Γฦ͢͜ ͱͰ։ൃΛਐΊΔ جຊతʹ͸ Ұํ޲ͷྲྀΕ ඞཁͳΒςετίʔ υͷ࡞੒ 0, 0, 5%%ςετۦಈ։ൃ

5%%ͷϝϦοτ ୹ظ໨ඪ͕͋ΓϞνϕʔγϣϯ্͕ ͕Δɺਐ௙͕෼͔Γқ͍ ϦϑΝΫλϦϯά͠΍͘͢ͳΔ ϑϨʔϜϫʔΫ౳ͷόʔδϣϯΞο ϓ͕༰қʹͳΔ τʔλϧͰ͸։ൃ࣌ؒΛ୹͘ग़དྷΔ 97

5%%ͷσϝϦοτ ࠷ॳ͸ςετΛॻ͘ͷ͕೉͍͠ ϓϩάϥϛϯάॳ৺ऀʹ͸ςετ͕ ॻ͚ͳ͍ ςετΛॻ͘ࣄ͕໨తʹͳΓ͕ͪ 98

ςετͷॻ͖ํ ςετίʔυ͸ ςετσʔλͳͲςετͷ४උ ςετର৅ͷ࣮ߦ ݁ՌΛ֬ೝ ·ͣ͸ɺਖ਼ৗܥΛ̍ͭॻ͘ ઌਓͷॻ͍ͨςετίʔυΛֶͿ
99

ϦϑΝΫλϦϯά ίʔυͷվળ ϝϯςφϯεੑͷߴ͍ίʔυʹ͢Δ جຊతʹ͸࢓༷͸ม͑ͳ͍ ςετ͕͋Δͱ༰қʹग़དྷΔ 100 ը૾͸IUUQNFUBPIMPIOFUHPJOHUEEΑΓ

34QFD 3VCZ 3BJMT ͰΑ͘࢖ΘΕΔπʔϧ ίϯύΫτͰ൑Γқ͍ςετ͕ॻ͚Δ STQFDSBJMTΛ࢖͏ͱNPEFM IFMQFS DPOUSPMMFS WJFX
NBJMFS SPVUFT GFBUVSFTͷςετ͕ॻ͚Δ 101

STQFDSBJMT࢖͍ํͷ͓קΊ NPEFMʹϩδοΫͷςετΛॻ͘ GFBUVSFTͰΞϓϦશମͷ؆୯ͳςετ Λॻ͘ 102

͖ͭͮʜ

&:0⒏DF 3VCZݴޠೖ໳ॻ 1FSM 1ZUIPO౳ʹ׳Ε਌͠ΜͰ͍ΔਓҎ֎͸ઈରʹ 3VCZͷೖ໳ॻΛಡΜͰԼ͍͞ɻ ࣮ࡍʹຊ԰͞ΜͰோΊܾͯΊͯԼ͍͞ɻ ຊΛಡΉ͚ͩͰͳ͘ɺઆ໌ʹग़ͯ͘ΔίʔυΛࢼ͠ ͨΓɺԋश໰୊ͷίʔυΛॻ͍ͯԼ͍͞ɻ 104 *4#/
*4#/ *4#/

&:0⒏DF 3VCZPO3BJMTೖ໳ॻ ·ͣ͸Ұ࡭3VCZPO3BJMTͷຊΛಡΉͷ͕ૣಓͰ͢ ࣗ෼ʹͱͬͯಡΈ΍ͦ͢͏ͳຊΛબͿͷ͕ॏཁͰ͢ ࢴͷॻ੶͸࠷৽൛ʹରԠͯ͠ͳ͍Ͱ͕͢Ձ஋͸͋Γ·͢ 105 *4#/ IUUQQSBHQSPHDPNCPPL SBJMTBHJMFXFCEFWFMPQNFOU XJUISBJMT
IUUQUBUTV[JOFDPN CPPLTSBJMTUVUPSJBM

ωοτ্ͷ৘ใ ೥Ҏ্લͷ৘ใ͸ݹ͍ͷͰ஫ҙʂ ৴པग़དྷΔ৘ใ IUUQTXXXSVCZMBOHPSHKB IUUQSVCZPOSBJMTPSH IUUQHVJEFTSVCZPOSBJMTPSH ༗༻ IUUQTUBDLPWFSqPXDPN IUUQRJJUBDPN 106
ˡ͓קΊ

೔ຊޠͷϒϩά౳ʹ͸໾ʹཱͨͳ͍ ΋ͷ͕··͋Γ·͢ ݕࡧ্Ґʹ͋Δ৘ใͰ΋ྑ͘ͳ͍΋ ͷ΋͋Γ·͢ ۩ମྫ͸ޱ಄Ͱ 107 ωοτ্ͷ৘ใ

ࠓ೔ͷ݁࿦ ӳޠॏཁ ৽͍ٕ͠ज़͸ӳޠͰ΍ͬͯདྷΔ ӳձ࿩͸ޙճ͠ɺಡΊΕ͹0, ׳ΕΔࣄ͕ॏཁ 108

͓͔ͭΕ͞·Ͱͨ͠ IUUQXXXFZP⒏DFDPN

クラウドｘスマフォ時代のRuby on Rails入門

クラウドｘスマフォ時代のRuby on Rails入門

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