Rails講義第26回コードを書くための道具箱

3VCZPO3BJMTߨٛ ୈճ ίʔυΛॻͨ͘Ίͷಓ۩ശ ,VOJBLJ*("3"4)*JHBJHB BUҰڮେֶ ࣾձՊֶʹ͓͚Δ৘ใٕज़ͱίϯςϯπ࡞੒*7 χϑςΟגࣜձࣾدෟߨٛ

χϑςΟגࣜձࣾ ఏڙ

ߨࢣ ޒेཛྷ๜໌ גࣜձࣾສ༿ɹΤϯδχΞ

ίʔυΛ ॻͨ͘Ίͷ ಓ۩ശ IUUQXXXqJDLSDPNQIPUPTqPSJBOSJD

UIBOLTUPSZPQFLP UIFQIPUPJTIUUQXXXqJDLSDPNQIPUPTNBSUJOEBMF όʔδϣϯ؅ཧγεςϜ

͜Μͳ͜ͱ͋Γ·ͤΜ͔ʁ ͋ΕɺίʔυΛॻ͖׵͑ͨΒ ಈ͔ͳ͘ͳͬͪΌͬͨɾɾɾ ಈ͍ͯͨͱ͖΁໭͍͚ͨ͠Ͳ ෼͔Μͳ͘ͳͬͪΌͬͨɾɾɾ

ͦΜͳͱ͖ʹ໾ʹཱͭͷ͕ όʔδϣϯ؅ཧγεςϜ Ͱ͢ɻ

΋͠΋ɺ͜Μͳ෩ʹཤྺ͕࢒͍ͬͯͯ ࣌ؒͷྲྀΕ CPPLSC ϝϞػೳΛ௥Ճͨ͠ CPPLSC ݱࡏɻૉ੖Β͍͠ػೳΛ࣮૷தɻ CPPLSC BVUIPSϝιου࡞ͬͨ

͏·͘ಈ͔ͳ͘ͳͬͪΌͬͨɾɾɾͬͯͱ͖ʹ ࣌ؒͷྲྀΕ CPPLSC ϝϞػೳΛ௥Ճͨ͠ CPPLSC ݱࡏɻૉ੖Β͍͠ػೳ͸ࣦഊʹऴΘͬͨɻ CPPLSC BVUIPSϝιου࡞ͬͨ

࣌ؒͷྲྀΕ CPPLSC ϝϞػೳΛ௥Ճͨ͠ CPPLSC ݱࡏɻૉ੖Β͍͠ػೳ͸ࣦഊʹऴΘͬͨɻ CPPLSC BVUIPSϝιου࡞ͬͨ աڈͷ͋Δ࣌఺΁໭ΕͨΒศརͰ͢ΑͶʁ ͜͜΁ ໭Γ͍ͨ

όʔδϣϯ؅ཧγεςϜ ͳΒɺͰ͖ͪΌ͍·͢ʂ Ͱ͸ɺ࢖͍ํΛݟ͍͖ͯ·͠ΐ͏ɻ

όʔδϣϯ؅ཧγεςϜ ʹ͸͍͔ͭ͘छྨ͕͋ΔͷͰ͕͢ɺ ࠓճ͸ HJUͱ͍͏ όʔδϣϯ؅ཧγεςϜΛ࢖͍·͢ɻ 3VCZJTU͕Α͘࢖͏όʔδϣϯ؅ཧγεςϜͰ͢ɻ -JOVYΛ࡞ͬͨ-JOVT͞Μ͕࡞ऀͰ͢ɻ ˞HJUͱ3VCZͱ͸ಛʹؔ܎͸͋Γ·ͤΜɻ ಠཱͯ͠ผʑʹ࢖ΘΕ·͢ɻ

HJUΠϯετʔϧ֬ೝ 8JO .BD 3BJMT*OTUBMMFSͰΠϯετʔϧͨ͠ਓ͸͢ͰʹHJU͕Π ϯετʔϧ͞Ε͍ͯ·͢ɻ TIFMMͰҎԼͷίϚϯυΛଧͬͯόʔδϣϯ͕දࣔ͞Εͯ ͍Ε͹ΠϯετʔϧࡁΈͰ͢ɻ HJUWFSTJPO ˞ͷ෦෼͸ҟͳΓ·͢ɻ ˞.BDͷਓͰΠϯετʔϧ͞Ε͍ͯͳ͍৔߹͸ɺ
ҎԼ͔Β%-ͯ͠Πϯετʔϧ͍ͯͩ͘͠͞ɻ IUUQDPEFHPPHMFDPNQHJUPTYJOTUBMMFS HJU͸TIFMMͰίϚϯυͱͯ͠࢖͍·͢ɻ git version 1.7.5.2

HJUઃఆ֬ೝ HJU͸࢖༻ऀͷ໊લͱϝʔϧΞυϨεΛཤྺʹ࢒͠·͢ɻ ҎԼͷίϚϯυͰઃఆΛ֬ೝͰ͖·͢ɻ HJUDPOpHHMPCBMVTFSOBNF HJUDPOpHHMPCBMVTFSFNBJM Kuniaki IGARASHI [email protected] ઃఆ͕Ͱ͖͍ͯͳ͍৔߹͸ҎԼͰઃఆͰ͖·͢ɻ HJUDPOpHHMPCBMVTFSOBNF,VOJBLJ*("3"4)*
HJUDPOpHHMPCBMVTFSFNBJMJHBJHB!HNBJMDPN ˞͜ΕΒͷ৘ใ͸1$಺ʹอଘ͞Ε·͢ɻެ։͞ΕΔ͜ͱ͸ࠓճͷ࢖͍ ํͩͱ͋Γ·ͤΜ͕ɺ৺഑ͳ৔߹͸Ծͷ΋ͷͰ΋େৎ෉Ͱ͢ɻ

HJUॳظԽ ࢼ͠ʹɺ৽͍͠ϑΥϧμΛ࡞ͬͯͦ͜ΛHJUͰόʔδϣϯ ؅ཧͯ͠Έ·͠ΐ͏ɻ NLEJSϑΥϧμ໊ DEϑΥϧμ໊ લ४උ ϑΥϧμΛ৽ن࡞੒͠·͢ɻ ࡞ͬͨϑΥϧμ΁Ҡಈ͠·͢ɻ HJU͸ϑΥϧμ୯ҐͰཤྺʢόʔδϣϯʣΛ؅ཧ͠·͢ɻ HJUॳظԽ
HJUJOJU HJUJOJU͢ΔͱɺͦͷϑΥϧμΛόʔδϣϯ؅ཧͰ͖ΔΑ͏ʹͳΓ·͢ɻ Initialized empty Git repository in ϑΥϧμ໊ ˞౾஌ࣝɿόʔδϣϯ؅ཧ͞Ε͍ͯΔ৔ॴΛʮϦϙδτϦʯͱݺͼ·͢ɻ

ཤྺͷϙΠϯτΛ࡞Δ ྺ࢙ʹ࢒͍ͨ͠ঢ়ଶͰϙΠϯτΛ࡞Γ·͢ɻ ͜ͷϙΠϯτΛίϛοτͱݺͼ·͢ɻ CPPLSC CPPLSC BVUIPSϝιου࡞ͬͨ ϝϞػೳΛ௥Ճͨ͠ ͖͞΄ͲͷਤͰݴ͏˔ͷ෦෼Ͱ͢ɻ

ίϛοτͷํ๏ ΤσΟλͰϑΝΠϧΛ࡞ͬͯɺHJUJOJUͨ͠ϑΥϧμ΁อଘ͠·͠ΐ͏ɻ લ४උ ίϛοτͯ͠Έ·͠ΐ͏ɻ HJUίϛοτ HJUBEEIFMMPSC HJUDPNNJUNIFMMPSCΛ௥Ճ ίϛοτ͢Δʹ͸ɺHJUBEEͨ͠ޙͰɺHJUDPNNJU͠·͢ɻ [master (root-commit)
ebeb9df] hello.rb Λ௥Ճ 1 files changed, 1 insertions(+), 0 deletions(-) create mode 100644 hello.rb QVUT)FMMPXPSME IFMMPSC ϑΝΠϧ໊΋ϑΝΠϧͷ಺༰΋ ࣗ༝Ͱ͔·͍·ͤΜɻ 3VCZͷίʔυͰͳͯ͘΋0,Ͱ͢ɻ IFMMPSCͷ෦෼͸ϑΝΠϧ໊ IFMMPSCΛ௥Ճͷ෦෼͸ ίϝϯτͰ͢ɻࣗ༝ʹॻ͚·͢ɻ

ཤྺΛݟΔ ཤྺΛݟͯΈ·͠ΐ͏ɻઌ΄Ͳ࡞ͬͨίϛοτ͕͋Δ͸ͣͰ͢ɻ ཤྺΛݟΔ HJUMPH ͖͞΄Ͳͷίϛοτ͕͋Γ·ͨ͠ɻ ͳʹ΍Β৭ʑͱॻ͍ͯ͋Γ·͢ɻʢ࣍ͷϖʔδ΁ଓ͘ʣ commit ebeb9df1625ef74856a2724cca54e87abf72dfbc Author: Kuniaki
IGARASHI <[email protected]> Date: Sat Dec 15 21:44:22 2012 +0900 hello.rb Λ௥Ճ

commit ebeb9df1625ef74856a2724cca54e87abf72dfbc Author: Kuniaki IGARASHI <[email protected]> Date: Sat Dec 15
21:44:22 2012 +0900 hello.rb Λ௥Ճ ཤྺͷݟํ HJUMPH ‏ίϛοτϋογϡ ‏ίϛοτͨ͠ਓ ‏ίϛοτͨ͠೔࣌ ‏ίϛοτϝοηʔδ ֤छ৘ใ͕ه࿥͞Ε͍ͯ·͢ɻ ίϛοτϋογϡͱ͸φχϞϊͰ͠ΐ͏͔ʁ ίϛοτϋογϡ͸ͦͷίϛοτΛҰҙʹࣔ͢ӳ਺ࣈͰ͢ɻ ͜ͷίϛοτͷ໊લͱݴͬͯ΋͍͍Ͱ͠ΐ͏ɻ ͜ͷίϛοτΛࢦ͢ͱ͖͸FCFCEͱࢦఆ͠·͢ɻ

΋͏ͭίϛοτΛ࡞ͬͯΈ·͠ΐ͏ ΤσΟλͰ͖ͬ͞ͷϑΝΠϧΛมߋͯ͠อଘ͠·͠ΐ͏ɻ લ४උ HJUίϛοτ HJUBEEIFMMPSC HJUDPNNJUNQVUTจΛมߋ ίϛοτͨ͠ΒHJUMPHΛݟͯΈ·͠ΐ͏ɻʢͭͮ͘ʣ [master 6ba048b] putsจΛมߋ
1 files changed, 1 insertions(+), 1 deletions(-) QVUTGPP IFMMPSC IFMMPSCͷ෦෼͸ϑΝΠϧ໊ QVUTจΛมߋͷ෦෼͸ ίϝϯτͰ͢ɻࣗ༝ʹॻ͚·͢ɻ

ཤྺΛ֬ೝͯ͠Έ·͠ΐ͏ HJUMPH commit 6ba048b2967d1c04f271e12988e43f19f3f65def Author: Kuniaki IGARASHI <[email protected]> Date: Sun
Dec 16 09:56:42 2012 +0900 putsจΛมߋ commit ebeb9df1625ef74856a2724cca54e87abf72dfbc Author: Kuniaki IGARASHI <[email protected]> Date: Sat Dec 15 21:44:22 2012 +0900 hello.rb Λ௥Ճ ‏৽͍͠ίϛοτ ͕૿͑·ͨ͠ ͜ͷΑ͏ʹίϛοτ͕ੵΈ্͕͍͖ͬͯ·͢ɻ มߋͷ಺༰Λ΋͏গ͠ৄ͘͠ݟΔʹ͸Ͳ͏͢Ε͹͍͍Ͱ͠ΐ͏͔ɻʢͭͮ͘ʣ

commit 6ba048b2967d1c04f271e12988e43f19f3f65def Author: Kuniaki IGARASHI <[email protected]> Date: Sun Dec 16
09:56:42 2012 +0900 putsจΛมߋ diff --git a/hello.rb b/hello.rb index 08b85bf..a32c710 100644 --- a/hello.rb +++ b/hello.rb @@ -1 +1 @@ -puts "Hello world!" +puts "foo" commit ebeb9df1625ef74856a2724cca54e87abf72dfbc Author: Kuniaki IGARASHI <[email protected]> Date: Sat Dec 15 21:44:22 2012 +0900 hello.rb Λ௥Ճ diff --git a/hello.rb b/hello.rb new file mode 100644 ཤྺΛৄ͘͠ݟͯΈ·͠ΐ͏ HJUMPHQ ‏IFMMPSC͕มߋ͞Εͨ ‏͔Β࢝·Δߦ͸࡟আ͞Εͨ͜ͱΛҙຯ͠·͢ɻ ‏ ͔Β࢝·Δߦ͸௥Ճ͞Εͨ͜ͱΛҙຯ͠·͢ɻ ίϛοτͰมΘͬͨࠩ෼ EJGG ͕දࣔ͞Ε·͢ɻԿΛม͔͑ͨௐ΂͍ͨͱ͖ʹศརͰ͢ɻ ·ͨɺҎԼͷઃఆจΛଧͭͱ݁Ռ͕Χϥʔʹͳͬͯݟқ͍Ͱ͢ɻ ճ͚ͩଧͯ͹ͣͬͱ༗ޮ HJUDPOpHHMPCBMDPMPSVJUSVF

HJUͷݱࡏঢ়ଶΛ֬ೝ͢Δ HJUঢ়ଶ֬ೝ HJUTUBUVT ϑΝΠϧʹมߋ͕ͳ͍ͱ͖ # On branch master nothing to
commit (working directory clean) ϑΝΠϧ͕มߋ͞Ε͍ͯΔͱ͖ # On branch master # Changes not staged for commit: # (use "git add <file>..." to update what will be committed) # (use "git checkout -- <file>..." to discard changes in working directory) # # modified: hello.rb # no changes added to commit (use "git add" and/or "git commit - a") ‏มߋ͞Ε͍ͯΔϑΝΠϧ໊ ͭͮ͘

HJUͷݱࡏঢ়ଶΛ֬ೝ͢Δ ͖ͭͮ HJUঢ়ଶ֬ೝ HJUTUBUVT աڈʹίϛοτͯ͠ͳ͍ϑΝΠϧ͕ଘࡏ͢Δͱ͖ # On branch master #
Untracked files: # (use "git add <file>..." to include in what will be committed) # # iga.rb nothing added to commit but untracked files present (use "git add" to track) ‏աڈʹίϛοτ͞Ε͍ͯͳ͍͚Ͳଘࡏͯ͠ΔϑΝΠϧ໊

ྺ࢙Λר͖໭͢ աڈͷίϛοτ·Ͱ໭ͯ͠Έ·͠ΐ͏ɻ ྫʣ HJUDIFDLPVU<ίϛοτϋογϡ> IFMMPSCΛΤσΟλͰ։͘ͱɺFCFCE࣌఺ͷঢ়ଶʹ໭ͬͯΔ͜ͱ͕෼͔Γ·͢ɻ Note: checking out 'ebeb9d'. You
are in 'detached HEAD' state. You can look around, make experimental changes and commit them, and you can discard any commits you make in this state without impacting any branches by performing another checkout. If you want to create a new branch to retain commits you create, you may do so (now or later) by using -b with the checkout command again. Example: git checkout -b new_branch_name HEAD is now at ebeb9df... hello.rb Λ௥Ճ ίϛοτϋογϡ͸ HJUMPHͰௐ΂͓͖ͯ·͢ɻ ίϛοτϋογϡ͸શ෦ଧͨͳͯ͘΋ Ұҙʹܾ·Δ௕͞Ͱେৎ෉Ͱ͢ɻ HJUDIFDLPVUFCFCE QVUT)FMMPXPSME

ר͖໭ͨ͠ྺ࢙Λݩʹ໭͢ ݩʹ໭͢ʹ͸DIFDLPVUͰNBTUFSΛࢦఆ͠·͢ɻ HJUDIFDLPVUNBTUFS IFMMPSCΛΤσΟλͰ։͘ͱɺ࠷৽ͷίϛοτ࣌఺ͷঢ়ଶʹ໭͍ͬͯ·͢ɻ Previous HEAD position was ebeb9df... hello.rb
Λ௥Ճ Switched to branch 'master' QVUTGPP ˞IFMMPSCͷϑΝΠϧ΋࠷৽ʹ໭ΔͷͰɺඞཁͳΒ͹ผͷ໊લͰίϐʔ͓͖ͯ͠·͢ɻ

ࢀߟɿHJU࿅श৔IUUQUSZHJUIVCDPN

ͿͬͪΌ͚ɺϒϥ΢β͔ΒΆͪΆ ͪಈ࡞֬ೝ͢Δͷɺ໘౗ͳΜͰ͢ ΑͶɻSBJMTT΋ଧͨͳ͍ͱ͍͚ ͳ͍͠ɻ ͦ͜Ͱɺಈ࡞֬ೝ 5FTU ΋ϓϩάϥϜ ʹ΍Βͤͯ͠·͏͜ͱʹͯ͠·͢ɻ ։ൃΛ଎͘޼͘ਐΊΔٕͰ͢ɻ

ϓϩάϥϜͰςετΛॻ͘࢓૊Έͷ͕ͭ34QFDͰ͢ɻ 34QFD͸(FNʹͳ͍ͬͯΔͷͰ؆୯ʹ࢖͍࢝ΊΔ͜ͱ͕Ͱ͖·͢ɻ 34QFD લ४උ 3BJMTΞϓϦͰ34QFDΛॻ͘ํ๏ΛݟͯΈ·͠ΐ͏ɻ ྫʹΑ͍ͬͯͭ΋ͷΞϓϦΛ࡞Γ·͢ɻ ʢطʹͰ͖͍ͯΔΞϓϦΛ࢖ͬͯ΋0,ʣ SBJMTOFXCPPLT@BQQ DECPPLT@BQQ CVOEMFFYFDSBJMTHTDBGGPMECPPLTUJUMFTUSJOH
NFNPUFYU CVOEMFFYFDSBLFECNJHSBUF CVOEMFFYFDSBLFECNJHSBUF3"*-4@&/7UFTU ࣍ͷߦ΋Ճ࣮͑ͯߦ͍ͯͩ͘͠͞ɻ طʹ͋ΔΞϓϦΛ࢖͏৔߹΋͜Ε͚࣮ͩߦ͍ͯͩ͘͠͞ɻ

34QFDΠϯετʔϧ (FNpMFʹҎԼΛ௥Ճ͠·͢ɻ ͨͱ͑͹TRMJUFͷԼ CVOEMFFYFDSBJMTHSTQFDJOTUBMM HFNSTQFDSBJMT 3TQFDΛΠϯετʔϧ͠·͢ɻ TIFMMͰҎԼͷίϚϯυΛଧͪ·͢ɻ CVOEMF CVOEMFίϚϯυͰมߋͨ͠(FNpMFΛ൓өͤ͞·͢ɻ

34QFDϓϩμΫτίʔυ࣮૷ ͨͱ͑͹#PPLϞσϧ͕ҎԼͷΑ͏ʹͳ͍ͬͯͯɺEFDP@UJUMFͱ͍ ͏λΠτϧΛσίΔૉఢͳϝιουΛ࣮૷͍ͯͨ͠ͱ͠·͠ΐ͏ɻ DMBTT#PPL"DUJWF3FDPSE#BTF BUUS@BDDFTTJCMFNFNP UJUMF EFGEFDP@UJUMF UJUMF
FOE FOE ͨͱ͑͹ɺCPPL#PPLOFX UJUMF݄ͷϥΠΦϯ ͷͱ͖ CPPLEFDP@UJUMFͱ࣮ߦͯ͠ ݄ͷϥΠΦϯ Λಘ͍ͨΘ͚Ͱ͢ɻ ςετͳͩ͠ͱ͏·͘ಈ͔͘ෆ҆Ͱ໷΋຾Ε·ͤΜɻ ςετίʔυΛॻ͍ͯΈ·͠ΐ͏ʂ ˞͜ͷ#PPLΫϥεͷΑ͏ʹɺΞϓϦͰ࣮ࡍͷಈ࡞ʹ࢖ΘΕΔίʔυΛϓϩμΫ τίʔυͱಡΜͩΓ΋͠·͢ɻࢲ͸ຊ൪ίʔυͱಡΜ͡Ό͏͜ͱ͕ଟ͍Ͱ͢ɻ BQQNPEFMTCPPLSC

34QFDςετίʔυ࣮૷ ςετίʔυ͸ҎԼͷΑ͏ʹॻ͚·͢ɻ DPEJOHVUG SFRVJSFTQFD@IFMQFS EFTDSJCF#PPLEP EFTDSJCFEFDP@UJUMFEP JU
Ͱғ·ΕͨλΠτϧΛฦ͢EP CPPL#PPLOFX UJUMF݄ͷϥΠΦϯ CPPLEFDP@UJUMFTIPVME ݄ͷϥΠΦϯ FOE FOE FOE TQFDCPPL@TQFDSC ‏#PPLΫϥεͷ ‏EFDP@UJUMFϝιουʹ͍ͭͯ ͸Πϯελϯεϝιουͷҙ ‏͜͏ಈ࡞͢΂͖ ‏લ४උ ‏ςετίʔυɹίΞ෦෼ CPPLEFDP@UJUMFTIPVME ݄ͷϥΠΦϯ ϙΠϯτ͸͜ͷίʔυͰ͢ɻTIPVME͕ςετͷͨΊͷϝιουɻ ʮCPPLEFDP@UJUMF͸ ݄ͷϥΠΦϯ ͱ ಉ͡ ʹͳΔ΂͖ʯ ͱ͍͏ςετίʔυͰ͢ɻ CPPLEFDP@UJUMFͷ݁Ռ͕ ݄ͷϥΠΦϯ ͷ৔߹ʹςετΛ௨ա͠·͢ɻ ҟͳΔ৔߹΍͏·͘ಈ͔ͳ͍৔߹͸ςετ͕ࣦഊ͠·͢ɻ

34QFDςετίʔυ࣮ߦ ςετ͕ແࣄʹ௨ա͢Δͱɺ ͜Μͳײ͡ͷεοΩϦͨ͠άϦʔϯͷදࣔʹͳΓ·͢ɻ STQFDTQFDCPPL@TQFDSC ͖͞΄Ͳॻ͍ͨςετίʔυΛ࣮ߦͯ͠Έ·͠ΐ͏ɻ ࣮ߦʹ͸STQFDίϚϯυΛ࢖͍ɺ ࣮ߦ͍ͨ͠ςετίʔυΛࢦఆ͠·͢ɻ

34QFDςετίʔυ࣮ߦ ͳʹ͔໰୊͕͋Δͱ͜Μͳײ͡ͷ࢒೦ͳϨουͷදࣔʹͳΓ·͢ɻ ϓϩμΫτίʔυɺ΋͘͠͸ςετίʔυΛݟ௚͠·͠ΐ͏ɻ STQFDTQFDCPPL@TQFDSC

5XJUUFS#PPUTUSBQ

5XJUUFS#PPUTUSBQ͸ ͳΜ͔͑͑ײ͡ͷ σβΠϯʹͯ͘͠ΕΔ ͓खܰπʔϧͰ͢ɻ

ྫʹΑ͍ͬͯͭ΋ͷTDBGGPMEͰ࡞ΔΞϓϦΛ୊ࡐʹ͠·͢ɻ લʹ࡞ͬͨ΋ͷ͕͋Ε͹ͦΕΛͦͷ··࢖ͬͯ΋0,Ͱ͢ɻ SBJMTOFXCPPLT@BQQ લ४උ DECPPLT@BQQ CVOEMFFYFDSBJMTHTDBGGPMECPPLT UJUMFTUSJOHNFNPUFYU CVOEMFFYFDSBLFECNJHSBUF

஍ຯʙ

ͦ͜Ͱ5XJUUFS#PPUTUSBQ IUUQUXJUUFSHJUIVCDPNCPPUTUSBQ

‏·ͣ͸ %-͠·͢ɻ

ϑΝΠϧίϐʔ %-ͨ͠CPPUTUSBQ[JQΛղౚͯ͠ɺ DTTCPPUTUSBQDTT Λద༻͍ͨ͠ΞϓϦͷ BQQBTTFUTTUZMFTIFFUT ϑΥϧμ΁ίϐʔ͠·͢ɻ

ίʔυमਖ਼ BQQWJFXTMBZPVUTBQQMJDBUJPOIUNMFSC TUZMFTIFFU@MJOL@UBHCPPUTUSBQ NFEJBBMM TUZMFTIFFU@MJOL@UBHBQQMJDBUJPO NFEJBBMM ͷ্ʹҎԼͷߦΛ௥Ճ͠·͢ɻ EJWDMBTTDPOUBJOFSZJFMEEJW ZJFMEΛҎԼͰॻ͖׵͑·͢ɻ

ίʔυमਖ਼ BQQWJFXTMBZPVUTBQQMJDBUJPOIUNMFSC EJWDMBTTOBWCBSOBWCBSpYFEUPQ EJWDMBTTOBWCBSJOOFS EJWDMBTTDPOUBJOFS BDMBTTCSBOEISFG5IF#PPLTBQQB VMDMBTTOBW MJDMBTTBDUJWF BISFGCPPLT#PPLTB MJ
VM EJW EJW EJW CPEZͷ࣍ͷߦʹҎԼΛ௥Ճ͠·͢ɻ ্෦ϝχϡʔόʔʹͳΓ·͢

ίʔυमਖ਼ BQQWJFXTMBZPVUTBQQMJDBUJPOIUNMFSC GPPUFSEJWDMBTTDPOUBJOFS )JUPUTVCBTIJ6OJW EJWGPPUFS CPEZͷ࣍ͷߦʹҎԼΛ௥Ճ͠·͢ɻ Լ෦ϑολʔʹͳΓ·͢

ίʔυमਖ਼ BQQBTTFUTTUZMFTIFFUTBQQMJDBUJPODTT CPEZ\QBEEJOHUPQQY^ GPPUFS\NBSHJOUPQQY^ UBCMF UE UI\WFSUJDBMBMJHONJEEMFJNQPSUBOUCPSEFSOPOFJNQPSUBOU^ UI\CPSEFSCPUUPNQYTPMJE%%%JNQPSUBOU^ ϑΝΠϧͷҰ൪࠷ޙʹҎԼΛ௥Ճ͠·͢ɻ
SFRVJSF@USFF ͷԼͰ͢ɻ

ͪΐͬͱ ͍͍ײ͡ʙ

΋ͬͱ࢖ͬͯΈ͍ͨํ͸ɺ υοτΠϯετʔϧͷղઆಈը͕͓קΊͰ͢ɻ 5XJUUFS#PPUTUSBQ.PSF IUUQEPUJOTUBMMDPNMFTTPOTCBTJD@UXJUUFS@CPPUTUSBQ@W

෇࿥

5XJUUFS#PPUTUSBQ3BJMT(FN ࠷ॳ͸͜ͷHFNΛ࢖͏൛ͰࢿྉΛ࡞ ͬͨͷͰ͕͢ɺ8JOͰHFNΠϯετ ʔϧ͕͏·͍͔͘ͳ͍ͨΊɺ$44ͩ ͚Λ࢖͏൛ʹॻ͖௚͠·ͨ͠ɻ ͪ͜Βͷ൛΋͜͜ʹ࢒͓͖ͯ͠·͢ɻ

HFNUXJUUFSCPPUTUSBQSBJMT HFNMFTTSBJMT (FNpMFΛՕॴฤू͠·͢ɻ CVOEMF ฤूͨ͠ΒCVOEMFίϚϯυͰมߋΛ൓өͤ͞·͢ɻ 5XJUUFS#PPUTUSBQΠϯετʔϧ 4FFIUUQTHJUIVCDPNTTUFQIFOTPOFYFDKTSFBENFGPSNPSFTVQQPSUFESVOUJNFT HFNUIFSVCZSBDFS QMBUGPSNTSVCZ HSPVQBTTFUTEPFOEͷதʹҎԼΛ௥ՃͰॻ͍͍ͯͩ͘͞ɻ
ྫ͑͹HSPVQBTTFUTEPͷԼͷߦͱ͔ ҎԼͷίϝϯτߦઌ಄ͷΛ࡟ͬͯ༗ޮʹ͍ͯͩ͘͠͞ɻ ؀ڥʹΑͬͯQMBUGPSNTͷ෦෼͕ҟͳΔ͔΋͠Ε·ͤΜɻʣ 4FFIUUQTHJUIVCDPNTTUFQIFOTPOFYFDKTSFBENFGPSNPSFTVQQPSUFESVOUJNFT HFNUIFSVCZSBDFS QMBUGPSNTSVCZ ‐ίϨ࡟আ

ҎԼͷͭͷίϚϯυΛଧͬͯඞཁͳϑΝΠϧΛੜ੒͠·͢ɻ CVOEMFFYFDSBJMTHCPPUTUSBQJOTUBMM 5XJUUFS#PPUTUSBQΠϯετʔϧ CVOEMFFYFDSBJMTHCPPUTUSBQMBZPVUBQQMJDBUJPOqVJE ˞ҎԼͷΑ͏ʹ্ॻ͖͢Δ͔ฉ͔ΕΔͷͰ:ͱ౴্͑ͯॻ͖͠·͢ɻ conflict app/views/layouts/application.html.erb Overwrite app/views/layouts/application.html.erb? (enter
"h" for help) [Ynaqdh]

Ͱ͸ɺಈ࡞֬ೝͯ͠Έ·͠ΐ͏ɻ ͍ͭ΋௨ΓSBJMTTΛىಈͯ͠ϒϥ΢βͰΞΫηεͯ͠Έ͍ͯͩ͘͞ɻ 5XJUUFS#PPUTUSBQಈ࡞֬ೝ IUUQMPDBMIPTUCPPLT CVOEMFFYFDSBJMTT

ͪΐͬͱ͍͍ײ͡ʙ

෇࿥

ΑΓৄ͘͠஌Γ͍ͨਓ͸ ҎԼͷϖʔδ͕ࢀߟʹͳΓ·͢ɻ IUUQHVJEFTSVCZPOSBJMTPSHHFUUJOH@TUBSUFEIUNM ೔ຊޠͷࢿྉ͕ྑ͍ํ͸ ͜ͷຊ͕қ͠ΊͰ͢ɻ վగ৽൛جૅ3VCZPO3BJMT IUUQXXXBNB[PODPKQEQ

σόοάͷํ๏ ϒϥ΢βʹදࣔ͞ΕΔΤϥʔΛಡΉ SBJMTTFSWFSͷग़ྗΛ֬ೝ ϩάΛ֬ೝ ϩάΛग़ྗ QSZΛ࢖͏ $ISPNFͷσόοάػೳΛ࢖͏

ϒϥ΢βʹදࣔ͞ΕΔΤϥʔΛಡΉ ΤϥʔྫͦΜͳ63-஌Βͳ͍ ΤϥʔྫSBJMTTFSWFS͕ىಈ͍ͯ͠ͳ͍

ϒϥ΢βʹදࣔ͞ΕΔΤϥʔΛಡΉ Τϥʔྫ BQQDPOUSPMMFST CPPLT@DPOUSPMMFSSC ͷߦ໨ͰCBS͍ͬͯ͏஌Β ͳ͍΋ͷ͕͋ΔͷͰΤϥʔͩ Αɻ

SBJMTTFSWFSͷग़ྗΛ֬ೝ SBJMTTΛ࣮ߦͨ͠TIFMMΛݟΔͱɺΞΫηεͷͨͼʹԿ͔͕ ग़ྗ͞Ε͍ͯΔ͜ͱ͕෼͔Γ·͢ɻ

SBJMTTFSWFSͷग़ྗΛ֬ೝ Τϥʔ͕ى͜Δͱͦͷࢫ΋දࣔ͞Ε·͢ɻ ΤϥʔྫGPPʹΞΫηε͚ͨ͠ͲɺͦΜͳ63-஌Βͳ͍

SBJMTTFSWFSͷग़ྗΛ֬ೝ Τϥʔ͕ى͜Δͱͦͷࢫ΋දࣔ͞Ε·͢ɻ BQQDPOUSPMMFSTCPPLT@DPOUSPMMFSSCͷߦ໨Ͱ CBS͍ͬͯ͏஌Βͳ͍΋ͷ͕͋ΔͷͰΤϥʔͩΑɻ

ϩάͷ֬ೝ MPHEFWFMPQNFOUMPH ্هͷϑΝΠϧʹϩά͕ग़ྗ͞Ε·͢ɻ಺༰͸SBJMT TFSWFS͕ग़ྗ͍ͯ͠Δ΋ͷͱࣅ͍ͯ·͕͢ɺϩά ͷํ͕ৄ͍͠৘ใ͕ग़͍ͯΔ͜ͱ΋͋Γ·͢ɻ ΤσΟλͰ։͍ͯ֬ೝͯ͠΋͍͍Ͱ͕͢ɺϩά͕௥ ه͞ΕΔ͝ͱʹϦϩʔυ͢Δඞཁ͕͋Γ·͢ɻ ը໘ʹ࣍ʑͱߋ৽͞Εͨ಺༰Λදࣔ͢Δʹ͸ҎԼͷ ίϚϯυ͕ศརͰ͢ɻ UBJMGMPHEFWFMPQNFOUMPH
˞UBJM͸MJOVY NBDͷΈɻXJOͰ͸Ͱ͖ͳ͍Ͱ͢ɻ

ϩάΛग़ྗ ιʔεϑΝΠϧதͰม਺ͷத਎Λදࣔͨ͠Γɺॲཧ ͕Ͳ͜·ͰਐΜ͔ͩ஌Γ͍ͨ৔߹ʹ͸ϩάΛग़ྗ͢ Δͷ͕ศརͰ͢ɻ ͜͜Ͱ͸ͭͷํ๏Λઆ໌͠·͢ɻ

TIFMMʹදࣔQ 3VCZͷQϝιου͕3BJMTͰ΋࢖͑·͢ɻ Qϝιου͸จࣈྻΛSBJMTTFSWFSͷTIFMMʹදࣔ͠·͢ɻ ˞ද͚ࣔͩͰMPHEFWFMPQNFOUMPHʹ͸ग़ྗ͠ͳ͍ͷͰ஫ҙ DMBTT#PPLT$POUSPMMFS"QQMJDBUJPO$POUSPMMFS EFGJOEFY !CPPLT#PPLBMM Q Q!CPPLT
FOE FOE ‏୳͠қ͍Α͏ʹ໨ཱͭจࣈΛදࣔ͢Δͱศར ‏QϝιουͰ!CPPLTͷத਎Λදࣔ

ϩάʹදࣔ3BJMTMPHHFS 3BJMTMPHHFSFSSPSΛ࢖͏ͱMPHEFWFMPQNFOUMPH΁ม ਺ͷத਎΍จࣈྻΛग़ྗͰ͖·͢ɻ ࢖͍ํ͸Qͱಉ͡Ͱ͢ɻ ˞SBJMTTFSWFSͷTIFMMʹ͸දࣔ͠·ͤΜɻ DMBTT#PPLT$POUSPMMFS"QQMJDBUJPO$POUSPMMFS EFGJOEFY !CPPLT#PPLBMM 3BJMTMPHHFSFSSPS
3BJMTMPHHFSFSSPS!CPPLT FOE FOE ‏໨ҹ ‏!CPPLTͷத਎Λදࣔ

$ISPNFͰσόοά $ISPNFͷσϕϩούʔπʔϧΛ࢖͏ͱϦΫΤετͷ ৘ใ͕දࣔͰ͖ͨΓͯ͠ศརͰ͢ɻ $ISPNFͷදࣔ։ൃ؅ཧσϕϩούʔπʔϧ ΛબΜͰσϕϩούʔπʔϧΛىಈ͠·͢ɻ ‏͜Μͳͷ͕ දࣔ͞Ε·͢ɻ

$ISPNFͰσόοά ϦΫΤετͷ৘ใΛදࣔͤ͞Δʹ͸σϕϩούʔπʔϧͷ /FUXPSLλϒΛԡͯ͠ද͓͖ࣔͯ͠·͢ɻ ͜ͷঢ়ଶͰද͍ࣔͤͨ͞ϦΫΤετΛߦ͍·͢ɻ ྫͱͯ͠ɺCPPLTϖʔδ΁ΞΫηεͯ͠Έ·͠ΐ͏ɻ

·ͬ͞Βʹͯ͠΋͏ճ࣮ߦ͍ͨ͠ͱ͖͸ɺ Ұ൪ԼͷϚʔΫΛΫϦοΫ͢ΔͱɺදࣔΛΫϦΞ ͢Δ͜ͱ͕Ͱ͖·͢ɻ $ISPNFͰσόοά ͳΜ͔͍Ζ͍Ζදࣔ͞Ε·ͨ͠ɻҰ൪࠷ॳͷCPPLTΛΫ ϦοΫͯ͠Έ·͠ΐ͏ɻ

ϦΫΤετͷৄࡉ͕දࣔ͞Ε·͢ɻϦΫΤετ63-͕ IUUQMPDBMIPTUCPPLTͰ͋Δ͜ͱɺ )551ϝιου͕(&5Ͱ͋Δ͜ͱ͕෼͔Γ·͢ɻ $ISPNFͰσόοά

ͪͳΈʹɺ3FTQPOTFλϒΛදࣔͤ͞ΔͱϦΫΤετ ͷ݁Ռฦ͖ͬͯͨ)5.- ݱࡏදࣔ͞Ε͍ͯΔϖʔδ ͕දࣔ͞Ε·͢ɻ $ISPNFͰσόοά ΄͔ʹ΋ศརͳػೳ͕͍Ζ͍Ζ͋Γ·͕͢·ͨͷػձʹɾɾɾ

QSZͰσόοά QSZ͸ϓϩάϥϜͷ࣮ߦΛࢭΊͯɺͦͷ৔ॴͰ 3VCZͷίʔυΛ࣮ߦ͢Δ͜ͱ͕Ͱ͖Δɺ JSCͷΑ͏ͳର࿩؀ڥͰ͢ɻ QSZΛ࢖͏ͨΊʹ͸ɺ·ͣલ४උͱͯ͠ (FNpMFʹHFNQSZΛ௥Ճ͠·͢ɻ Ґஔ͸ྫ͑͹HFNTRMJUFͷ࣍ͷߦ͋ͨΓɻ ˞αʔϏεӡ༻΋ߟ͑ͯͪΌΜͱॻ͘ͳΒ͹ҎԼͷΑ͏ʹͨ͠ํ͕ྑ͍Ͱ͕͢ɺׂѪɻ HSPVQEFWFMPQNFOU UFTUEPHFNQSZFOE
HFNQSZ ‏௥Ճ (FNpMF ௥Ճͨ͠ΒɺTIFMMͰCVOEMFίϚϯυΛ࣮ߦͯ͠QSZΛΠϯετʔϧ͠·͢ɻ CVOEMF

QSZͰσόοά ࣍ʹɺιʔείʔυͰࢭΊ͍ͨ৔ॴ΁ CJOEJOHQSZͱॻ͖·͢ɻ ྫͱͯ͠ɺCPPLT΁ΞΫηε͞Εͨͱ͖ʹఀࢭ͢ ΔΑ͏ʹ#PPLT$POUSPMMFSͷJOEFYΞΫγϣ ϯʹॻ͍ͯΈ·͠ΐ͏ɻ DMBTT#PPLT$POUSPMMFS"QQMJDBUJPO$POUSPMMFS EFGJOEFY !CPPLT#PPLBMM CJOEJOHQSZ
FOE FOE ‏௥ه IUUQMPDBMIPTUCPPLT SBJMTTFSWFSΛ࠶ىಈͯ͠ɺϒϥ΢βͰΞΫηεͯ͠Έ·͠ΐ͏ɻ

QSZͰσόοά ϒϥ΢βͰΞΫηεޙɺSBJMTTFSWFSͷTIFMMΛݟΔͱϓϩάϥϜ͕ ఀࢭͯ͠ίϚϯυΛଧͯΔΑ͏ʹͳ͍ͬͯ·͢ɻ JSCͱಉ͡Α͏ʹ3VCZͷίʔυ͕࣮ߦͰ͖·͢ɻ

QSZͰσόοά ίʔυΛ࣮ߦͰ͖ΔͷͰɺม਺ͷத਎ΛQͰදࣔͰ͖·͢ɻ ʢ࣮͸ɺQΛଧͨͳͯ͘΋!CPPLTͱଧ͚ͭͩͰ΋දࣔͰ͖Δɻʣ QSZΛऴྃͯ͠ϓϩάϥϜΛ࠶։͢Δʹ͸FYJUͱଧͪ·͢ɻ

ߨٛࢿྉஔ͖৔ աڈͷࢿྉ͕%-Ͱ͖·͢ɻ IUUQTHJUIVCDPNIJUPUTVCBTIJSVCZMFDUVSF PS IUUQCJUMZSVCZMFDUVSF

ࡶஊɾ࣭໰༻GBDFCPPLάϧʔϓ IUUQTXXXGBDFCPPLDPNHSPVQTIJUPUTVCBTIJSC ɾՃೖඇՃೖ͸ࣗ༝Ͱ͢ ɾՃೖඇՃೖ͸੒੷ʹؔ܎͠·ͤΜ ɾࢀՃऀҰཡ͸ެ։͞Ε·͢ ɾॻ͖ࠐΈ͸ࢀՃऀͷΈݟ͑·͢ ɾر๬ऀ͸ΞΫηεͯ͠ࢀՃਃ੥͍ͯͩ͘͠͞ ɾࡶஊɺ࣭໰ɺٞ࿦ͳͲԿͰ΋ؾʹͤͣͲ͏ͧʙ ɾ࣭໰ʹ౴͑ΒΕΔਓ͸౴͍͑ͯ͋͛ͯͩ͘͞ ɾߨࢣਞ΋͓౴͑͠·͢
ɾೖͬͨΒܰࣗ͘ݾ঺հ͓Ͷ͕͍͠·͢

Rails講義 第26回 コードを書くための道具箱

Rails講義 第26回 コードを書くための道具箱

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Rails講義第26回コードを書くための道具箱

Rails講義第26回コードを書くための道具箱