Rails講義第17回

3VCZPO3BJMTߨٛ ୈճ3BJMTجૅ ,VOJBLJ*("3"4)*JHBJHB BUҰڮେֶ ࣾձՊֶʹ͓͚Δ৘ใٕज़ͱίϯςϯπ࡞੒*7 χϑςΟגࣜձࣾدෟߨٛ

χϑςΟגࣜձࣾ ఏڙ

ߨࢣ ޒेཛྷ๜໌ גࣜձࣾສ༿ɹΤϯδχΞ

ධՁํ๏ ԋश՝୊Λఏग़͍͖ͯͨͩ͠੒੷ධՁΛߦ͍·͢ɻ ·ͨɺतۀ΁ͷߩݙ౓΋ධՁͷର৅ͱ͠·͢ɻ ग़੮͕तۀճ਺ͷ෼ͷʹຬͨͳ͍৔߹͸ʮ'ʯͱ͠·͢ɻ

ࡶஊɾ࣭໰༻GBDFCPPLάϧʔϓ ޙظ΋ͦͷ··࢖͑·͢ɻࢥ͍ग़ͨ͠ͱ͖ʹࡶஊ΍࣭໰ͯ͠΋Βͬͯ0,ɻ अຐͳΑ͏ͳΒάϧʔϓ͔Βୀձ͍ͯͩ͘͠͞ɻ IUUQTXXXGBDFCPPLDPNHSPVQTIJUPUTVCBTIJSC ɾՃೖඇՃೖ͸ࣗ༝Ͱ͢ ɾՃೖඇՃೖ͸੒੷ʹؔ܎͠·ͤΜ ɾࢀՃऀҰཡ͸ެ։͞Ε·͢ ɾॻ͖ࠐΈ͸ࢀՃऀͷΈݟ͑·͢ ɾر๬ऀ͸ΞΫηεͯ͠ࢀՃਃ੥͍ͯͩ͘͠͞ ɾࡶஊɺ࣭໰ɺٞ࿦ͳͲԿͰ΋ؾʹͤͣͲ͏ͧʙ
ɾ࣭໰ʹ౴͑ΒΕΔਓ͸౴͍͑ͯ͋͛ͯͩ͘͞ ɾߨࢣਞ΋͓౴͑͠·͢ ɾೖͬͨΒܰࣗ͘ݾ঺հ͓Ͷ͕͍͠·͢

ߨٛࢿྉஔ͖৔ աڈͷࢿྉ͕%-Ͱ͖·͢ɻ IUUQTHJUIVCDPNIJUPUTVCBTIJSVCZMFDUVSF PS IUUQCJUMZSVCZMFDUVSF

ࣗश༻3BJMTࢿྉ ޙظ͸ಛʹڭՊॻ͸࢖͍·ͤΜ͕ɺࣗश༻ʹ͸ҎԼͷࢿྉΛ͓קΊ͠·͢ɻ 3BJMTCSJEHF XFC IUUQDVSSJDVMVNSBJMTCSJEHFPSHDVSSJDVMVNDVSSJDVMVN 3BJMT(VJEF XFC IUUQHVJEFTSVCZPOSBJMTPSH 3BJMTʹΑΔΞδϟΠϧ8FCΞϓϦέʔγϣϯ։ൃୈ൛
IUUQXXXBNB[PODPKQEQ վగ৽൛جૅ3VCZPO3BJMT IUUQXXXBNB[PODPKQEQ ͨͷ͍͠3VCZ IUUQXXXBNB[PODPKQEQ

એ఻

ॻ͍ͨຊ͕ઌ೔ ग़൛͞Ε·ͨ͠

·ͭ΋ͱΏ͖ͻΖ͞Μ͝ਪન

ఆՁ ԁ ‎ҰڮֶੜಛՁ ԁ PGG ߪೖ͝ر๬ͷํ͸ޒेཛྷ·Ͱ͝࿈བྷ͍ͩ͘͞ɻ ༧໿੍

ҎԼͷ؀ڥߏஙΛࡁ·͓͍͍ͤͯͯͩ͘͞ɻ ؀ڥߏங 8JOEPXT .BD 7.6CVOUV·ͨ͸3BJMT*OTUBMMFS ࠷ۙɺ.BD༻ͷ3BJMT*OTUBMMFS΋ग़·ͨ͠ɻ ͲͪΒΛ࢖ͬͯ΋͔·Θͳ͍Ͱ͢ɻ ͪ͜ΒͰͷಈ࡞֬ೝ͸7.6CVOUVΛ࢖ͬͯ ߦ͏ͷͰɺ7.ͷํ͕τϥϒϧগͳ͍͔΋ɻ

ҎԼͷόʔδϣϯΛ૝ఆ͍ͯ͠·͕͢ɺߨٛ ظؒதʹόʔδϣϯΞοϓ͢ΔͷͰ৽͍͠΋ ͷʹมߋʹͳΔ͔΋͠Ε·ͤΜɻ 3VCZPO3BJMT։ൃ؀ڥ 3VCZQ 3VCZPO3BJMTY ೥݄೔ݱࡏͷ࠷৽͸

7.؀ڥߏங 64#ϝϞϦ͔ΒWIEϑΝΠϧίϐʔ PSߨٛࢿྉஔ͖৔͔Β%- IUUQTHJUIVCDPNIJUPUTVCBTIJSVCZMFDUVSF 7JSUVBM#PYΛαΠτ͔Β%- IUUQTXXXWJSUVBMCPYPSHXJLJ%PXOMPBET ԼهͷϖʔδΛࢀߟʹىಈ IUUQXXXVCVOUVMJOVYKQEPXOMPBEKBSFNJYWIE ࣍ϖʔδҎ߱ʹϙΠϯτΛషͬͯ͋Γ·͢ɻ 7.04ϩάΠϯ*%
JEEFWQBTTXPSEEFWEFW

IUUQTXXXWJSUVBMCPYPSHXJLJ%PXOMPBET

IUUQXXXVCVOUVMJOVYKQEPXOMPBEKBSFNJYWIE

3BJMT*OTUBMMFS

IUUQSBJMTJOTUBMMFSPSH

3BJMT*OTUBMMFS 3BJMTΠϯετʔϥʔΛ %PXOMPBEɺ*OTUBMM IUUQSBJMTJOTUBMMFSPSH ໊લͱFNBJMΛೖྗ ެ։͞Ε·͢ɻ HJUIVC΍ΞϓϦެ։࣌ʹ࢖ΘΕ·͢ɻެ։͞Εͨ͘ͳ͍ਓ͸χοΫωʔ ϜͳͲΛ࢖͍ͬͯͩ͘͞ɻ ىಈ 8JOEPXT
8JOEPXTϝχϡʔ͔ΒҎԼΛ࣮ߦ ʮϓϩάϥϜͱϑΝΠϧͷݕࡧʯ͔Β$PNNBOE1SPNQUXJUI3VCZBOE3BJMTPS ελʔτˠશͯͷϓϩάϥϜˠ3BJMT*OTUBMMFSˠ$PNNBOE1SPNQUXJUI3VCZBOE3BJMT ىಈ .BD ΞϓϦέʔγϣϯϢʔςΟϦςΟλʔϛφϧBQQΛىಈ

ਪ঑ΤσΟλ ͓ؾʹೖΓ͕͋Δਓ͸ͦΕͰ0,Ͱ͢ 8JOEPXT LPNPEPFEJUIUUQXXXBDUJWFTUBUFDPNLPNPEPFEJU JOUZQFIUUQJOPUBJDPNJOUZQF 6CVOUV HFEJUςΩετΤσΟλʔ Πϯετʔϧࡁ .BDςΩετΤσΟοτ Πϯετʔϧࡁ
LPNPEPFEJUIUUQXXXBDUJWFTUBUFDPNLPNPEPFEJU $PU&EJUPSIUUQTPVSDFGPSHFKQQSPKFDUTDPUFEJUPS ΤσΟλίʔυΛଧͭಓ۩

JOUZQF 8JO IUUQJOPUBJDPNJOUZQF

JOUZQF ίʔυΛॻͨ͘Ίͷઃఆ &EJU1SFGFSFODFT 'POUTλϒ 'POUΛ೔ຊޠදࣔͰ͖Δ ΋ͷʹมߋʢϝΠϦΦ΍ .4ΰγοΫʣ

JOUZQF

,PNPEP&EJU 8JO .BD IUUQXXXBDUJWFTUBUFDPNLPNPEPFEJU

໨࣍ 3VCZPO3BJMTجૅ ͍ͪ͹Μখ͞ͳ3BJMTΞϓϦ࡞Γ 3VCZͷίʔυ࣮ߦ݁ՌΛ)5.-΁ຒΊࠐΉ $POUSPMMFSͱ7JFX

3VCZPO3BJMTͱ͸ 3VCZͰॻ͔Εͨ8FCΞϓϦϑϨʔϜϫʔΫ

3VCZPO3BJMTͱ͸ 3VCZͰॻ͔Εͨ 8FCΞϓϦέʔγϣϯϑϨʔϜϫʔΫ 8FCΞϓϦέʔγϣϯΛ ؆୯ʹ࡞ΕΔ࢓૊Έ

8FCΞϓϦͬͯʁ

ϒϥ΢βͰΞΫηε Ͱ͖ΔΞϓϦ

$00,1"% 3BJMT੡

৯΂ϩά 3BJMT੡

0INZ(MBTTFT 3BJMT੡

UXJUUFSݩ3BJMT੡

Ͱ͸ɺՆֶظͷ࠷ޙͷ ํͰ΍ͬͨ͜ͱͷ෮श ͔Βελʔτ͠·͢ɻ

8FCΞϓϦͷ࢓૊Έͷ ؆୯ͳઆ໌

8FC4FSWFS 8FC"QQ #SPXTFS ϦΫΤετ 63-IUUQDPPLQBEDPN 8FCΞϓϦͷجຊಈ࡞ IUUQDPPLQBEDPN ϒϥ΢βʹ63-Λ ೖྗͯ͠&OUFS ϦΫΤετ͕ඈͼ·͢ɻ

8FC4FSWFS 8FC"QQ #SPXTFS ϦΫΤετ Ϩεϙϯε 63-IUUQDPPLQBEDPN )5.- 8FCΞϓϦͷجຊಈ࡞ IUUQDPPLQBEDPN Ϩεϙϯεͱͯ͠)5.-͕ฦͬͯ͘Δ

)5.- )ZQFS5FYU.BSLVQ-BOHVBHF 8FCϖʔδΛهड़͢ΔͨΊͷݴޠ

ϒϥ΢βͰ)5.-දࣔ ӈΫϦοΫ͔ΒιʔεΛදࣔ

8FC4FSWFS 8FC"QQ #SPXTFS ϦΫΤετ Ϩεϙϯε 63-IUUQDPPLQBEDPN )5.- ϒϥ΢βͷओͳػೳ IUUQDPPLQBEDPN ϦΫΤετΛඈ͹͢
ϨεϙϯεͰ΋Βͬͨ)5.-Λਓ͕ݟΔܗࣜͰදࣔ͢Δ

8FC4FSWFS 8FC"QQ #SPXTFS ϦΫΤετ Ϩεϙϯε )5.- Πϯλʔωοτ΁ͷΞΫηε 8FC4FSWFS͸ωοτͷ޲͜͏ʹ͋Δ *OUFSOFU

8FC4FSWFS 8FC"QQ #SPXTFS ϦΫΤετ Ϩεϙϯε 63- )5.- ։ൃ࣌ͷߏ੒ ୆ͷϚγϯͷதͰ։ൃɺΞΫηεՄೳͰ͢ɻ ࣗ෼ͷ1$

8FC4FSWFS 8FC"QQ #SPXTFS ϦΫΤετ Ϩεϙϯε 63- )5.- 3BJMTΞϓϦ ͜Ε͔Β࡞Δͷ͸͜ͷ෦෼ ࣗ෼ͷ1$
3BJMT"QQ ϒϥ΢βͰಈ࡞ ֬ೝ͠ͳ͕Βਐ Ί·͢ɻ

Ͱ͸ɺ3BJMTΞϓϦΛ ͭͬͯ͘Έ·͠ΐ͏

3BJMTΞϓϦΛͭͬͯ͘ಈ͔ͯ͠ΈΔ 3BJMTΞϓϦΛͭ͘Δ 8FC4FSWFSͱ3BJMTΞϓϦΛىಈ͢Δ ϒϥ΢β͔ΒҎԼͷ63-ʹΞΫηε͢Δ

3BJMTΞϓϦΛͭ͘Δ SBJMTOFXTBNQMF@BQQ ུ SBJMTOFXΞϓϦ໊ Ͱ3BJMTΞϓϦΛ࡞Γ·͢ɻ 3BJMT͕ඞཁͳϑΝΠϧΛ ͨ͘͞ΜHFOFSBUF͠·͢ɻ ը໘ʹදࣔ͞ΕΔͷ͸HFOFSBUF ͞ΕͨϑΝΠϧ܈Ͱ͢ɻ ͦͷޙɺඞཁͳHFNΛࣗಈͰηο
τΞοϓ͠·͢ɻ ͪΐͬͱ͔͔࣌ؒΓ·͢ɻ ్தͰ&OUFSZPVSQBTTXPSEUP JOTUBMMUIFCVOEMFE3VCZ(FNTUP ZPVSTZTUFN ͱݴΘΕͨΒύιίϯͷύεϫʔυΛೖྗ͠ ͍ͯͩ͘͞ɻ

8FC4FSWFSͱ3BJMTΞϓϦΛىಈͯ͠ɺϒϥ΢β͔ΒΞΫηε Մೳʹ͠·͢ɻ ىಈத͸TIFMM͔ΒίϚϯυͳͲ͸ೖྗͰ͖ͳ͍ͷͰɺඞཁͳ৔߹ ͸ผͷTIFMMը໘Λ։͖·͢ɻ ऴྃ͸$USMΩʔΛԡ͠ͳ͕ΒDΩʔΛԡ͍ͯͩ͘͠͞ɻ 8JOEPXTͰ$USM DͰऴྃ͠ͳ͍৔߹ɺ$USM 1"64&Λࢼ͍ͯͩ͘͠͞ɻʣ DETBNQMF@BQQ CVOEMFFYFDSBJMTT
8FC4FSWFSͱ3BJMTΞϓϦΛىಈ͢Δ ‏T͸TFSWFSͷུͰ͢ɻ

͜Μͳը໘͕ग़Ε͹3BJMTΞϓϦ΁ΞΫηε੒ޭͰ͢ɻ ։ൃ͢ΔͨΊͷา໨͕౿Έग़͍ͤͯΔ͜ͱʹͳΓ·͢ɻ IUUQMPDBMIPTU ϒϥ΢β͔ΒҎԼͷ63-ʹΞΫηε͢Δ

MPDBMIPTU ಛผͳΞυϨεͰ͢ɻࣗ෼ͷϚγϯΛࢦ͠·͢ɻ IUUQMPDBMIPTU 63-ͷઆ໌ ϙʔτ൪߸Ͱ͢ɻ൪ϙʔτΛࢦ͠·͢ɻ ΞυϨε ϙʔτ ϙʔτ͸ɺಉ͡ΞυϨε಺Ͱ௨৴ઌΛಛఆ͢Δ൪߸Ͱ͢ɻ ྫ͑͹ɺΞυϨε͕Ӻͷ໊લɺϙʔτ͕ӺͷϗʔϜ˓൪ઢɺ
ͱΠϝʔδ͢Δͱ෼͔Γ΍͍͔͢΋ɻ

8FC4FSWFS 8FC"QQ #SPXTFS ϦΫΤετ IUUQMPDBMIPTU Ϩεϙϯε )5.- ࣗ෼ͷ1$ MPDBMIPTU CVOEMFFYFDSBJMTT
͖ͬ͞ͷΞΫηεͷΠϝʔδਤ TBNQMF@BQQ

લʹͭͬͨ͘3BJMTΞϓϦΛಈ͔ͯ͠ΈΔ 3BJMT3PPUϑΥϧμ΁Ҡಈ TBNQMF@BQQϑΥϧμ΁Ҡಈ͓͖ͯ͠·͢ɻ TBNQMF@BQQϑΥϧμΛ3BJMT3PPUͱݺͼ·͢ɻ CVOEMFJOTUBMM 3BJMTΞϓϦͰ࢖͏HFNΛηοτΞοϓͯ͘͠ΕΔ͓·͡ͳ͍ɻ ΄͔ͷ3BJMTΞϓϦΛಈ͔ͨ͠ޙͳͲ͸͜ͷ໋ྩ͕ඞཁͰ͢ɻ 8FC4FSWFSͱ3BJMTΞϓϦΛىಈ͢Δ ϒϥ΢β͔ΒΞΫηε͢Δ ճ໨Ҏ߱ʹىಈ͢Δ৔߹ͷखॱ
CVOEMFJOUBMM IUUQMPDBMIPTUCPPLT CVOEMFFYFDSBJMTT

͍ͭͮͯɺ ؆୯ͳϖʔδΛ࡞ͬͯΈ·͢ɻ σϞ༻΍։ൃͷͨΊͷͻͳܗΛ ࡞ΔͨΊͷTDBGGPMEͱ͍͏ػ ೳΛར༻͠·͢ɻ

CVOEMFFYFDSBJMTHFOFSBUFTDBGGPMECPPLUJUMFTUSJOHNFNPUFYU ؆୯ͳϖʔδΛͭͬͯ͘ΈΔ CVOEMFFYFDSBLFECNJHSBUF TDBGGPMEͰϖʔδΛͭ͘Δ σʔλΛ͠·͏σʔλϕʔεΛͭ͘Δ IUUQMPDBMIPTUCPPLT ϒϥ΢β͔ΒҎԼͷ63-ʹΞΫηε͢Δ ຊͷλΠτϧͱϝϞΛొ࿥Ͱ͖ΔϖʔδΛͭ͘Γ·͢ɻ CVOEMFFYFDSBJMTT ˞SBJMTTFSWFSΛ$USMDͰఀࢭ͍ͯͨ͠Βɺ·ͨىಈ͢Δ
TBNQMF@BQQϑΥϧμ΁Ҡಈ͓͖ͯ͠·͢ɻ ʢ͜ͷϑΥϧμͷ͜ͱΛ3BJMT3PPUͱݺͼ·͢ɻʣ

͜Μͳը໘͕ग़Ε͹੒ޭͰ͢ɻ/FX#PPLϦϯΫ͔ Βొ࿥ͨ͠Γฤूͨ͠Γ࡟আͨ͠Γͯ͠Έ͍ͯͩ͘͞ɻ IUUQMPDBMIPTUCPPLT ϒϥ΢β͔ΒҎԼͷ63-ʹΞΫηε͢Δ

Ͱ͸ɺ΋͏ͭผ ͷΞϓϦΛͭͬ͘ ͯΈ·͠ΐ͏ɻ

Ұ൪͍ͪ͞ͳ 3BJMTΞϓϦͮ͘Γ IUUQXXXqJDLSDPNQIPUPTOBPZBGVKJJ

DEIFMMPXPSME CVOEMFFYFDSBJMTHDPOUSPMMFSIFMMPJOEFY Ұ൪খ͞ͳ3BJMTΞϓϦͭ͘Γ 3BJMT3PPU΁Ҡಈͯ͠ϖʔδͷͻͳ͕ͨΛͭ͘Δ IUUQMPDBMIPTUIFMMPJOEFY ϒϥ΢β͔ΒҎԼͷ63-ʹΞΫηε͢Δ IFMMPXPSMEΛදࣔ͢ΔΞϓϦΛ࡞Γ·͢ɻ CVOEMFFYFDSBJMTT SBJMTOFXIFMMPXPSME 3BJMTΞϓϦΛͭ͘Δ
8FCαʔόΛىಈ͢Δ H͸HFOFSBUFͷུͰ͢ɻίϚϯυͷҙຯ͸ޙ൒Ͱઆ໌͠·͢ɻ ଧͪؒҧ͑ͯ࡟আ͍ͨ͠৔߹͸ɺHͷ୅ΘΓʹEͰ࡟আͰ͖·͢ɻ ˞ऴྃ͸$USM D ऴྃ͠ͳ͍৔߹ɺ$USM 1"64&Λࢼ͍ͯͩ͘͠͞ɻʣ T͸TFSWFSͷུɻ

IUUQMPDBMIPTUIFMMPJOEFY ϒϥ΢β͔ΒҎԼͷ63-ʹΞΫηε͢Δ ͜Μͳը໘͕ग़Ε͹0,Ͱ͢ɻ ͜ͷදࣔΛ)FMMPXPSMEʹม͑ͯΈ·͠ΐ͏ɻ

IUUQMPDBMIPTUIFMMPJOEFY )FMMPXPSMEΛදࣔͤ͞Δ ͜Μͳը໘͕ग़Ε͹0,Ͱ͢ɻ I)FMMPJOEFYI Q'JOENFJOBQQWJFXTIFMMPJOEFYIUNMFSCQ BQQWJFXTIFMMPJOEFYIUNMFSC ͱͳ͍ͬͯΔͱ͜ΖΛҎԼͷΑ͏ʹमਖ਼ I)FMMPXPSMEI ͖͞΄Ͳಉ༷ʹϒϥ΢βͰҎԼ΁ΞΫηε

7JFXͰ3VCZͷίʔυΛ࣮ߦͤ͞Δ 7JFXͰ͸3VCZͷίʔυΛ࣮ߦ͠ɺ݁ՌΛຒΊࠐΉ͜ͱ͕Ͱ ͖·͢ɻίʔυΛຒΊࠐΉ৔߹͸ͱͰғΈ·͢ɻ I)FMMPXPSMEI Qݱࡏ࣌ࠁ5JNFOPXQ ҎԼͷϑΝΠϧΛมߋͯ͠ɺϒϥ΢β͔ΒΞΫηεͯ͠Έ͍ͯͩ͘͞ɻ IUUQMPDBMIPTUIFMMPJOEFY ‏5JNFOPXͷ࣮ߦ݁Ռ BQQWJFXTIFMMPJOEFYIUNMFSC

$POUSPMMFSͰ3VCZͷίʔυΛ࣮ߦͤ͞Δ 7JFX͸දࣔΛ͢Δ໾ׂΛड͚࣋ͭ෦෼Ͱ͢ɻදࣔ͢Δ಺༰Λܭࢉͨ͠Γ࡞ ੒ͨ͠Γ͢Δͷ͸$POUSPMMFSͳͲɺ7JFXͷલஈͰߦ͏͖ͨ͠ΓͰ͢ɻ I)FMMPXPSMEI Qݱࡏ࣌ࠁ!UJNFQ ҎԼͷϑΝΠϧΛมߋͯ͠ɺϒϥ΢β͔ΒΞΫηεͯ͠Έ͍ͯͩ͘͞ɻ IUUQMPDBMIPTUIFMMPJOEFY BQQWJFXTIFMMPJOEFYIUNMFSC DMBTT)FMMP$POUSPMMFS"QQMJDBUJPO$POUSPMMFS EFGJOEFY
!UJNF5JNFOPX FOE FOE BQQDPOUSPMMFSTIFMMP@DPOUSPMMFSSC

3BJMTͰͷ ։ൃͷਐΊํ

3BJMTͰͷ։ൃͷਐΊํ 3BJMTͰͷجຊతͳ։ൃͷਐΊํ͸ ҎԼͷΑ͏ͳαΠΫϧʹͳΓ·͢ɻ ͻͳܗʹͳΔϑΝΠϧ ʢιʔείʔυ΍ઃఆϑΝΠϧʣͷੜ੒ ͦͷΞϓϦ༻ʹιʔείʔυΛมߋɺ௥ه ͜ͷͭͷ܁Γฦ͠

͖͞΄Ͳ࡞ͬͨ ΞϓϦ΋ ࣮͸͜ͷྲྀΕͰ ࡞ͬͯ·ͨ͠

DEIFMMPXPSME Ұ൪খ͞ͳ3BJMTΞϓϦͭ͘Γ 3BJMT3PPU΁Ҡಈͯ͠ϖʔδͷͻͳ͕ͨΛͭ͘Δ IUUQMPDBMIPTUIFMMPJOEFY ϒϥ΢β͔ΒҎԼͷ63-ʹΞΫηε͢Δ IFMMPXPSMEΛදࣔ͢ΔΞϓϦΛ࡞Γ·͢ɻ CVOEMFFYFDSBJMTT SBJMTOFXIFMMPXPSME 3BJMTΞϓϦΛͭ͘Δ 8FCαʔόΛىಈ͢Δ
H͸HFOFSBUFͷུͰ͢ɻίϚϯυͷҙຯ͸ޙ൒Ͱઆ໌͠·͢ɻ ଧͪؒҧ͑ͯ࡟আ͍ͨ͠৔߹͸ɺHͷ୅ΘΓʹEͰ࡟আͰ͖·͢ɻ ˞ऴྃ͸$USM D ऴྃ͠ͳ͍৔߹ɺ$USM 1"64&Λࢼ͍ͯͩ͘͠͞ɻʣ T͸TFSWFSͷུɻ CVOEMFFYFDSBJMTHDPOUSPMMFSIFMMPJOEFY ‏ੜ੒ ‏ੜ੒

IUUQMPDBMIPTUIFMMPJOEFY )FMMPXPSMEΛදࣔͤ͞Δ ͜Μͳը໘͕ग़Ε͹0,Ͱ͢ɻ I)FMMPJOEFYI Q'JOENFJOBQQWJFXTIFMMPJOEFYIUNMFSCQ BQQWJFXTIFMMPJOEFYIUNMFSC ͱͳ͍ͬͯΔͱ͜ΖΛҎԼͷΑ͏ʹमਖ਼ I)FMMPXPSMEI ͖͞΄Ͳಉ༷ʹϒϥ΢βͰҎԼ΁ΞΫηε ίʔυมߋ

Ͱ͸ɺͲΜͳ΋ͷ ͕ੜ੒͞Ε͍ͯΔ ͷͰ͠ΐ͏͔ɻ

ੜ੒͞ΕΔϑΥϧμɾϑΝΠϧ SBJMTOFXIFMMPXPSME ΞϓϦΛ࡞ΔίϚϯυͰ͋Δ SBJMTOFX<ΞϓϦ໊> Λ࣮ߦ͢Δͱɺ࣍ͷϖʔδͷΑ͏ͳϑΝΠϧɾ ϑΥϧμ͕ੜ੒͞Ε·͢ɻ ‏͜ͷը໘ͷͱ͖ʹੜ੒ ͯ͠·͢ɻ

SBJMTOFXIFMMPXPSME IFMMPXPSME BQQ NPEFMT DPOUSPMMFST WJFXT DPOpH SPVUFTSC ‏ΞϓϦ໊ͷϑΥϧμ
3BJMTΞϓϦ ͷجຊతͳ ϑΥϧμͱ ϑΝΠϧ܈ ҎԼͷϑΥϧμɾϑΝΠϧ͕ੜ੒͞Ε·͢ɻ Ұ෦ͷΈൈਮ

SBJMTHDPOUSPMMFSίϚϯυ ࣍͸SBJMTOFXʹଓ͍࣮ͯߦͨ͠ SBJMTHDPOUSPMMFSίϚϯυΛݟͯΈ·͠ΐ͏ɻ DPOUSPMMFSͱWJFXͳͲΛ࡞Δ SBJMTHDPOUSPMMFSίϚϯυΛ࣮ߦ͢Δͱ ࣍ϖʔδͷϑΝΠϧ܈͕ੜ੒͞Ε·͢ɻ ࠓճͷίϚϯυ͸63-͕IFMMPJOEFYͰ͋Δϖ ʔδΛදࣔ͢ΔͨΊͷϑΝΠϧ܈Λੜ੒͠·͢ɻ CVOEMFFYFDSBJMTHDPOUSPMMFSIFMMPJOEFY

IFMMPXPSME BQQ NPEFMT DPOUSPMMFST WJFXT DPOpH SPVUFTSC ҎԼͷϑΥϧμɾϑΝΠϧ͕ੜ੒ɾมߋ͞Ε·͢ɻ Ұ෦ͷΈൈਮ CVOEMFFYFDSBJMTHDPOUSPMMFSIFMMPJOEFY
JOEFYIUNMFSC IFMMP@DPOUSPMMFSSC IFMMP IUUQMPDBMIPTUIFMMPJOEFY IFMMPJOEFYϖʔδΛ දࣔ͢ΔͨΊͷϑΝΠϧ܈Λ ੜ੒͠·͢ɻ ‏͍Ζ͍ΖͳॲཧΛߦ͏Օॴ ‏දࣔΛߦ͏Օॴ ‏63-ͱίϯτϩʔϥͷରԠද

CVOEMFFYFDSBJMTHDPOUSPMMFSIFMMPJOEFY SBJMTHίϚϯυ ͻͳ͕ͨʹͳΔϑΝΠϧΛੜ੒͢ΔίϚϯυ ˞ଧͪؒҧ͑ͯ࡟আ͍ͨ͠৔߹͸ɺHͷ୅ΘΓʹEͰ࡟আͰ͖·͢ɻ SPVUFTɺίϯτϩʔϥɺϏϡʔͷϑΝΠϧ΄͔Λੜ੒͠·͢ɻ DPOpHSPVUFTSC BQQDPOUSPMMFSTIFMMP@DPOUSPMMFSSC BQQWJFXTIFMMPJOEFYIUNMFSC΄͔ HFOFSBUF͢Δछྨ ίϯτϩʔϥ໊
ΞΫγϣϯ໊ ˞ͪͳΈʹɺલʹ΍ͬͨTDBGGPME΋HFOFSBUFͷछྨͷͭͰ͢ɻ

΋͏গ͠ৄ͘͠ ॲཧΛ௥͍͔͚ ͯΈ·͠ΐ͏ɻ

8FC4FSWFS #SPXTFS Ϩεϙϯε )5.- ϒϥ΢β͔ΒΞΫηεͨ͠ͱ͖ͷ3BJMTΞϓϦͷಈ࡞ 3BJMT"QQ ϦΫΤετ ϦΫΤετ 63-IUUQMPDBMIPTUIFMMPJOEFY )551ϝιουɿ(&5
3PVUFT $POUSPMMFS 7JFX 63-ೖྗཝʹ ΞυϨεΛೖྗͯ͠ &OUFSΛԡ͢ͱ ϦΫΤετ͕ඈͼ·͢

3BJMT"QQ Ϩεϙϯε)5.- 3PVUFT $POUSPMMFS 7JFX 3PVUFT $POUSPMMFS 7JFXͷͭͷ෦඼Λ௨ա͠·͢ɻ ϦΫΤετ 63-IUUQMPDBMIPTUIFMMPJOEFY
)551ϝιουɿ(&5 SPVUFTSC IFMMP@DPOUSPMMFSSCJOEFYΞΫγϣϯ IFMMPJOEFYIUNMFSC 3BJMTΞϓϦ͕ϦΫΤετΛड͚ͯ ϨεϙϯεΛฦ͢·ͰͷྲྀΕ

3PVUFT ϦΫΤετͷ63-ͱ)551ϝιουʹԠͯ͡ ॲཧΛߦ͏ઌΛܾΊ·͢ɻ ˞SPVUFT͔ΒΞΫηε͞ΕΔίϯτϩʔϥͷϝιουͷ͜ͱΛ ʮΞΫγϣϯʯͱݺͼ·͢ɻ ϦΫΤετ 63-IUUQMPDBMIPTUIFMMPJOEFY )551ϝιουɿ(&5 )FMMP$POUSPMMFSͷJOEFYΞΫγϣϯ SPVUFT͕͍࣋ͬͯΔରԠදΛݟͯݺͼग़͢ΞΫγϣϯΛܾఆ
ৄ͘͠͸·ͨޙͰग़͖ͯͨͱ͖ʹઆ໌͍͖ͯ͠·͢ɻ

$POUSPMMFS ͞·͟·ͳॲཧΛߦ͍ɺͭ͗ͷ7JFXʹॲཧΛ౉͠·͢ɻ )FMMP$POUSPMMFSͷιʔε͸ BQQDPOUSPMMFSTIFMMP@DPOUSPMMFSSCͰ͢ɻ DMBTT)FMMP$POUSPMMFS"QQMJDBUJPO$POUSPMMFS EFGJOEFY !UJNF5JNFOPX FOE FOE BQQDPOUSPMMFSTIFMMP@DPOUSPMMFSSC
ϙΠϯτ͸ɺ7JFXʹσʔλΛ౉͢ࡍ͸ɺΠϯελϯεม਺ !͸͡·Γͷม਺ʣ Λ࢖͏͜ͱͰ͢ɻ͜͜Ͱ͸ɺ!UJNF͕࣍ͷ7JFX΁౉͞Ε·͢ɻ ‎࣍͸7JFX BQQWJFXTIFMMPJOEFYIUNMFSC ʹॲཧ͕౉Γ·͢ɻ

7JFX Ϣʔβʔͷ໨ʹಧ͘෦෼ʢ͜͜Ͱ͸)5.-ʣΛͭ͘Γ·͢ɻ I)FMMPXPSMEI Qݱࡏ࣌ࠁ!UJNFQ BQQWJFXTIFMMPJOEFYIUNMFSC JOEFYIUNMFSC͸ɺ)5.-ͷ΋ͱʹͳΔϑΝΠϧͰ͢ɻ3VCZͷί ʔυΛ࣮ߦͨ݁͠ՌΛຒΊࠐΉ͜ͱ͕Ͱ͖·͢ɻʢ͜ͷΑ͏ͳϑΝΠϧ ΛςϯϓϨʔτͱݺͼ·͢ɻʣຒΊࠐ·Εͨ3VCZͷίʔυΛ࣮ߦͨ͠ ݁ՌͰ)5.-Λ࡞Γ·͢ɻ ʢ࣮ࡍʹ͸ɺ7JFXςϯϓϨʔτϑΝΠϧ͔Β࡞ΒΕͨ)5.-ʹɺ3BJMT͕ͦͷ
ଞͷՃ޻ΛՃ͑ͯϨεϙϯεͱͯ͠ૹग़͠·͢ɻʣ ‏$POUSPMMFSͰ୅ೖͨ͠ !UJNFͷத਎͕දࣔ͞ΕΔ

3BJMT"QQ $POUSPMMFSͰίʔυΛ࣮ߦͯ͠ɺ ݁ՌΛ7JFX΁౉͢ͱ͖͸Πϯελϯεม਺Λ࢖͏ Ϩεϙϯε)5.- 3PVUFT $POUSPMMFS 7JFX ϦΫΤετ 63-IUUQMPDBMIPTUIFMMPJOEFY )551ϝιουɿ(&5
ίʔυΛ࣮ߦͯ͠!UJNFʹ୅ೖ !UJNFͷத਎Λදࣔ͢Δ ݁ՌΛ౉͢ʹ͸Πϯελϯεม਺ !͸͡·Γ Λ࢖͏

ߨٛࢿྉஔ͖৔ ߨٛࢿྉஔ͖৔Λͭ͘Γ·ͨ͠ɻ աڈͷࢿྉ͕%-Ͱ͖·͢ɻ IUUQTHJUIVCDPNIJUPUTVCBTIJSVCZMFDUVSF PS IUUQCJUMZSVCZMFDUVSF

ࡶஊɾ࣭໰༻GBDFCPPLάϧʔϓ GBDFCPPLάϧʔϓΛ࡞Γ·ͨ͠ 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17回

Rails講義 第17回

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Rails講義第17回

Rails講義第17回