Rails講義第22回画像投稿アプリとCRUD基礎

3VCZPO3BJMTߨٛ ୈճը૾౤ߘΞϓϦͱ $36%ͷجૅ ,VOJBLJ*("3"4)*JHBJHB BUҰڮେֶ ࣾձՊֶʹ͓͚Δ৘ใٕज़ͱίϯςϯπ࡞੒*7 χϑςΟגࣜձࣾدෟߨٛ

χϑςΟגࣜձࣾ ఏڙ

ߨࢣ ޒेཛྷ๜໌ גࣜձࣾສ༿ɹΤϯδχΞ

ը૾౤ߘΞϓϦͭ͘Γͱ $36%ͷجૅ TQPOTPSFECZ+4BUP

Լ४උ SBJMTOFXCMPH@BQQ ҎલͷߨٛͰ΋࢖ͬͨTDBGGPMEΛར༻ͯ͠ϒϩάΛ࡞Γ·͢ɻ DECMPH@BQQ CVOEMFFYFDSBJMTHTDBGGPMETUPSZUJUMFTUSJOH
ɹ ɹ EFTDSJQUJPOUFYUBEESFTTTUSJOHQJDUVSFTUSJOH CVOEMFFYFDSBLFECNJHSBUF IUUQMPDBMIPTUTUPSJFT CVOEMFFYFDSBJMTT ϒϥ΢βͰ্هͷΞυϨε΁ΞΫηεͯ͠ಈ࡞֬ೝͯ͠Έ·͠ΐ ͏ɻ֬ೝͰ͖ͨΒSBJMTTΛࢭΊͯ࣍͗΁ਐΈ·͢ɻ ͜͜·Ͱ͸ҎલͷߨٛͰ΍ͬͨ΋ͷͱಉ͡Ͱ͢Ͷɻ

HFNͷར༻ (FNpMF HFNDBSSJFSXBWF ը૾Λ౤ߘ͢ΔػೳΛ෇͚ΔͨΊʹɺ DBSSJFSXBWFͱ͍͏HFNΛ࢖͍·͢ɻ 3BJMTΞϓϦͰHFNΛར༻͢Δ৔߹͸ɺ (FNpMFʹҎԼΛ଍͠·͢ɻ (FNpMF͸CMPH@BQQϑΥϧμͷ௚Լʹ͋Γ·͢ɻ ௥Ճ͢Δ৔ॴ͸ྫ͑͹HFNTRMJUFͷ࣍ͷߦ΁ɻ (FNpMFΛฤूͨ͠ΒɺCVOEMFίϚϯυͰΠϯετʔϧ
Λߦ͍·͢ɻ࣍ͷϖʔδͰઆ໌͠·͢ɻ

CVOEMFJOTUBMM CVOEMF CVOEMF͸CVOEMFJOTUBMMͷུͰɺ(FNpMFʹ৽ ͘͠௥Ճͨ͠HFNΛΠϯετʔϧ͢ΔίϚϯυͰ͢ɻ <౾஌ࣝ>ͨͼͨͼग़ͯ͘ΔCVOEMFFYFDʙͱ͍͏ίϚϯυ͸ɺ(FNpMF ʹॻ͍ͯ͋ΔHFN৘ใΛ͔࣮ͭͬͯߦ͠ͳ͍͞ͱ͍͏ίϚϯυͰ͢ɻ

ϑΝΠϧΞοϓϩʔυͷ࣮૷ NPVOU@VQMPBEFSQJDUVSF 1JDUVSF6QMPBEFS CVOEMFFYFDSBJMTHVQMPBEFS1JDUVSF DBSSJFSXBWFHFNΛར༻͢ΔͨΊͷखଓ͖Λ͠·͢ɻ ࠷ॳʹඞཁͳϑΝΠϧΛੜ੒͠·͢ɻ ࣍ʹϑΝΠϧΛमਖ਼͠·͢ɻ BQQNPEFMTTUPSZSC DMBTT4UPSZ"DUJWF3FDPSE#BTFͷ࣍ͷߦ΁ҎԼ௥Ճ ࣍ͷϖʔδ΁ͭͮ͘

GUFYU@pFMEQJDUVSF BQQWJFXTTUPSJFT@GPSNIUNMFSCΛՕॴमਖ਼ GpMF@pFMEQJDUVSF ҎԼͷΑ͏ʹมߋ GPSN@GPS !TUPSZ EPcGc GPSN@GPS !TUPSZ IUNM\NVMUJQBSUUSVF^
EPcGc ҎԼͷΑ͏ʹมߋ ͖ͭͮ BQQWJFXTTUPSJFTTIPXIUNMFSCΛՕॴमਖ਼ !TUPSZQJDUVSF JNBHF@UBH !TUPSZQJDUVSF@VSM XJEUI JG!TUPSZQJDUVSFQSFTFOU ҎԼͷΑ͏ʹมߋ

ϒϥ΢β͔Βಈ࡞֬ೝ SBJMTTΛ࠶ىಈͯ͠ಈ࡞֬ೝͯ͠Έ·͠ΐ͏ɻ IUUQMPDBMIPTUTUPSJFT CVOEMFFYFDSBJMTT ϒϥ΢βͰ্هͷΞυϨε΁ΞΫηε /FXTUPSZϖʔδͰ1JDUVSFʹ ϑΝΠϧΛબ୒ͯ͠อଘ͢Δͱɺ ը૾ϑΝΠϧΛVQMPBEͰ͖·͢ɻ

Ͱ͸ɺ͜͜·ͰԿ౓͔ొ৔ͨ͠ TDBGGPME ʹ͍ͭͯগ͠આ໌͠·͢ɻ ˞ը૾Λ౤ߘ͢Δ෦෼͸આ໌͠·ͤΜɻHFNΛ࢖͏ͱศ རͳ͜ͱ͕Ͱ͖Δɺͱ͍͏ύϫʔΛײͯ͡΋Β͑Ε͹0, Ͱ͢ɻৄ͘͠஌Γ͍ͨਓ͸ࣗशͯ͠Έ͍ͯͩ͘͞ɻ

4DBGGPME IUUQXXXqJDLSDPNQIPUPTDSBNPDPNNVOJDBUJPOT

ຊͷλΠτϧͱϝϞΛ؅ཧͰ͖ΔΞϓϦ SBJMTOFXCPPLT@BQQ TDBGGPMEΛར༻ͯ͠ॻ੶ϝϞΞϓϦΛ࡞ͬͨ৔߹Λઆ໌͠·͢ɻ DECPPLT@BQQ CVOEMFFYFDSBJMTHTDBGGPMECPPLT UJUMFTUSJOHNFNPUFYU CVOEMFFYFDSBLFECNJHSBUF IUUQMPDBMIPTUCPPLT CVOEMFFYFDSBJMTT ϒϥ΢βͰ্هͷΞυϨε΁ΞΫηε

TDBGGPME ͔ΜͨΜʹϒϩάϖʔδͷΑ͏ͳ ౤ߘػೳΛੜ੒͢Δػೳ ࡞੒ɺදࣔɺߋ৽ɺ࡟আ ͷͭͷػೳΛ࣋ͭϖʔδ܈Λ ಈ͔͢ίʔυΛੜ੒͠·͢ɻ ˞࣮͸TDBGGPMEΛ׆༻͢Δͱ͍͏ͷ͸࣮ࡍͷ։ൃͰ͸ ͦ͏ଟ͘ͳ͍Ͱ͢ɻ͔͠͠ɺجຊͷษڧʹ͸ͱͯ΋ྑ͍ ͷͰɺTDBGGPMEͰੜ੒ͨ͠ϖʔδ͕Ͳ͏ಈ͔͘Λத৺ ʹղઆΛਐΊ͍͖ͯ·͢ɻ

CVOEMFFYFDSBJMTHTDBGGPMECPPLTUJUMFTUSJOHNFNPUFYU ੜ੒͞ΕΔίʔυϑΝΠϧ܈

TDBGGPMEͰੜ੒͞ΕΔϑΝΠϧͷҰ෦ ECNJHSBUF@DSFBUF@CPPLTSC BQQNPEFMTCPPLSC SFTPVSDF@SPVUF SFTPVSDFTCPPLT BQQDPOUSPMMFSTCPPLT@DPOUSPMMFSSC BQQWJFXTCPPLT BQQWJFXTCPPLTJOEFYIUNMFSC BQQWJFXTCPPLTFEJUIUNMFSC BQQWJFXTCPPLTTIPXIUNMFSC
BQQWJFXTCPPLTOFXIUNMFSC BQQWJFXTCPPLT@GPSNIUNMFSC SC͸3VCZίʔυɺIUNMFSC͸)5.-ςϯϓϨʔτ

͜ͷޙͷઆ໌ʹओʹؔ܎ͯ͘͠Δͷ͸ҎԼͷϑΝΠϧ܈ ECNJHSBUF@DSFBUF@CPPLTSC BQQNPEFMTCPPLSC SFTPVSDF@SPVUF SFTPVSDFTCPPLT BQQDPOUSPMMFSTCPPLT@DPOUSPMMFSSC BQQWJFXTCPPLT BQQWJFXTCPPLTJOEFYIUNMFSC BQQWJFXTCPPLTFEJUIUNMFSC BQQWJFXTCPPLTTIPXIUNMFSC
BQQWJFXTCPPLTOFXIUNMFSC BQQWJFXTCPPLT@GPSNIUNMFSC

TDBGGPME͸࣍ͷϖʔδʹࣔ͢ ࡞੒ɺදࣔɺߋ৽ɺ࡟আͷͨΊͷ ͭͷը໘ͱɺ ը໘ͷͳ͍ͭͷػೳΛੜ੒͠·͢ɻ

JOEFY OFX FEJU TIPX Ұཡ ฤू ৽ن ೖྗ ৄࡉ

JOEFY CPPLT (&5 OFX CPPLTOFX (&5 FEJU CPPLTJEFEJU (&5 TIPX
(&5 CPPLTJE DSFBUF 1045 CPPLT VQEBUF 165 CPPLTJE EFTUSPZ %&-&5& CPPLTJE ৽نొ࿥ SFEJSFDU SFEJSFDU ߋ৽ ฤू SFEJSFDU ৽نೖྗ ࡟আ ΞΫγϣϯ໊ )551ϝιου VSM ΞΫγϣϯ໊ )551ϝιου VSM ͜ͷਤ ͷݟํ ը໘͋Γ ը໘ͳ͠ TDBGGPMEͰ࡞ΒΕΔը໘ͱػೳҰཡ ޙͰઆ໌͍͖ͯ͠·͢

TDBGGPME͕࡞ͬͨ ͜ΕΒͷػೳ͸ 8FCΞϓϦͷجຊͱͳΔͨΊ $36% Ϋϥου ͱ͍͏໊લ͕͍ͭͯ·͢ɻ $SFBUF 3FBE 6QEBUF %FTUSPZ
ͷ಄จࣈͰ͢ɻ ৽ن࡞੒ɾදࣔɾߋ৽ɾ࡟আ

֤ը໘ͱػೳ͸ରԠ͢Δ ΞΫγϣϯ DPOUSPMMFSͷϝιου ͱ WJFXͰॲཧ͕ߦΘΕදࣔ͞Ε·͢ɻ TDBGGPME͸ ը໘ͷ͋ΔͭͷΞΫγϣϯͱɺ ը໘ͷͳ͍ͭͷΞΫγϣϯɺ ͋ΘͤͯͭͷΞΫγϣϯΛ࡞Γ·͢

TDBGGPMEͰ࡞੒͞ΕΔΞΫγϣϯ BQQCPPLT@DPOUSPMMFSSC

(&5 CPPLTJE DSFBUF 1045 CPPLT VQEBUF CPPLTJE EFTUSPZ %&-&5& CPPLTJE ৽نొ࿥ SFEJSFDU SFEJSFDU ߋ৽ ฤू SFEJSFDU ৽نೖྗ ࡟আ ΞΫγϣϯ໊ )551ϝιου VSM ΞΫγϣϯ໊ )551ϝιου VSM ͜ͷਤ ͷݟํ ը໘͋Γ ը໘ͳ͠ $36%ը໘ભҠਤ 165

Ͱ͸ɺͦΕͧΕͷΞΫγϣϯͱ ରԠ͢Δը໘Λݟ͍͖ͯ·͠ΐ͏ɻ

(&5 CPPLTJE DSFBUF 1045 CPPLT VQEBUF 1045 CPPLTJE EFTUSPZ %&-&5& CPPLTJE ৽نొ࿥ SFEJSFDU SFEJSFDU ߋ৽ ฤू SFEJSFDU ৽نೖྗ ࡟আ ΞΫγϣϯ໊ )551ϝιου VSM ΞΫγϣϯ໊ )551ϝιου VSM ͜ͷਤ ͷݟํ ը໘͋Γ ը໘ͳ͠ $36%ը໘ભҠਤ

JOEFYΞΫγϣϯ CPPLT (&5 Ұཡը໘

OFXΞΫγϣϯ CPPLTOFX (&5 ৽نೖྗը໘

CPPLTJEFEJU FEJUΞΫγϣϯ (&5 ฤूը໘

TIPXΞΫγϣϯ CPPLTJE (&5 ৄࡉը໘

DSFBUFΞΫγϣϯ CPPLT 1045 ৽نొ࿥

(&5 CPPLTJE DSFBUF 1045 CPPLT VQEBUF 165 CPPLTJE EFTUSPZ %&-&5& CPPLTJE ৽نొ࿥ SFEJSFDU SFEJSFDU ߋ৽ ฤू SFEJSFDU ৽نೖྗ ࡟আ ΞΫγϣϯ໊ )551ϝιου VSM ΞΫγϣϯ໊ )551ϝιου VSM ͜ͷਤ ͷݟํ ը໘͋Γ ը໘ͳ͠ $36%ը໘ભҠਤ

VQEBUFΞΫγϣϯ CPPLTJE 165 ߋ৽

EFTUSPZΞΫγϣϯ CPPLTJE %&-&5& ࡟আ

͜͜·Ͱઆ໌ͨ͠෦෼͸͜ͷϑΝΠϧʹॻ͔Ε͍ͯ·͢ ECNJHSBUF@DSFBUF@CPPLTSC BQQNPEFMTCPPLSC SFTPVSDF@SPVUF SFTPVSDFTCPPLT BQQDPOUSPMMFSTCPPLT@DPOUSPMMFSSC BQQWJFXTCPPLT BQQWJFXTCPPLTJOEFYIUNMFSC BQQWJFXTCPPLTFEJUIUNMFSC BQQWJFXTCPPLTTIPXIUNMFSC
BQQWJFXTCPPLTOFXIUNMFSC BQQWJFXTCPPLT@GPSNIUNMFSC VSM )551ϝιουͱ ΞΫγϣϯͷରԠද ͭͷ ΞΫγϣϯ ରԠ͢Δ ը໘දࣔ

Ͱ͸ɺॲཧͷྲྀΕΛ௥͍͔͚ͯΈ ·͠ΐ͏ɻ

JOEFYΞΫγϣϯ CPPLT (&5 Ұཡը໘ JOEFYը໘͕දࣔ͞ΕΔ·ͰͷྲྀΕΛ௥͍͔͚ͯΈ·͠ΐ͏ɻ

3BJMT"QQ Ϩεϙϯε)5.- 3PVUFT $POUSPMMFS 7JFX 3PVUFT $POUSPMMFS 7JFXͷͭͷ෦඼Λ௨ա͠·͢ɻ ϦΫΤετ 63-IUUQMPDBMIPTUCPPLT
)551ϝιουɿ(&5 SPVUFTSC CPPLT@DPOUSPMMFSSCJOEFYΞΫγϣϯ CPPLTJOEFYIUNMFSC ෮श 3BJMTΞϓϦ͕ϦΫΤετΛड͚ͯ ϨεϙϯεΛฦ͢·ͰͷྲྀΕ

)551ϝιουɿ(&5 SPVUFTSC CPPLT@DPOUSPMMFSSCJOEFYΞΫγϣϯ CPPLTJOEFYIUNMFSC 3BJMTΞϓϦ͕ϦΫΤετΛड͚ͯ ϨεϙϯεΛฦ͢·ͰͷྲྀΕ

3PVUFT CVOEMFFYFDSBLFSPVUFT SBLFSPVUFTίϚϯυΛ࢖͏ͱɺ63- )551ϝιου ʹର͢ΔίϯτϩʔϥΞΫγϣϯͷରԠද͕දࣔ͞Ε·͢ɻ Լઢ෦͕ࠓճؔ܎͢Δ෦෼Ͱ͢ɻ ʮCPPLTʹ(&5ͰΞΫηε͞Εͨͱ͖ɺ #PPLT$POUSPMMFSͷJOEFYΞΫγϣϯ΁ॲཧΛྲྀ͢ʯ ͱ͍͏ҙຯʹͳΓ·͢ɻ )551
ϝιου 63- ίϯτϩʔϥΞΫγϣϯ

3PVUFTରԠද͕ॻ͔ΕͨϑΝΠϧ CVOEMFFYFDSBLFSPVUFT SPVUFT͸"QQOBNF"QQMJDBUJPOSPVUFTESBXEP͔Β FOEͷؒʹॻ͖·͢ɻSBLFSPVUFTͰදࣔ͞ΕΔߦͷରԠද͸ SFTPVSDFTCPPLTͷߦ͚ͩͰهड़ՄೳͰ͢ɻ جຊతͳSPVUFTͰ͋ΔͨΊɺ୹͘ॻ͚ΔΑ͏ʹͳ͍ͬͯ·͢ɻ DPOpHSPVUFTSC "QQOBNF"QQMJDBUJPOSPVUFTESBXEP SFTPVSDFTCPPLT FOE

$POUSPMMFS BQQDPOUSPMMFSTCPPLT@DPOUSPMMFSSC DMBTT#PPLT$POUSPMMFS"QQMJDBUJPO$POUSPMMFS EFGJOEFY !CPPLT#PPLBMM SFTQPOE@UPEPcGPSNBUc GPSNBUIUNMJOEFYIUNMFSC GPSNBUKTPO\SFOEFSKTPO!CPPLT^ FOE FOE
ҎԼOFX FEJU DSFBUFͳͲͭͷΞΫγϣϯ͕ॻ͔Ε͍ͯΔ FOE JOEFYΞΫγϣϯͰߦ͍ͬͯΔ͜ͱͰॏཁͳͷ͸ !CPPLT#PPLBMMͷߦͰ͢ɻ #PPLBMMͰ#PPLʹؔ͢Δશσʔλ͕٧·ͬͨ഑ྻΛऔಘͯ͠ɺ !CPPLTΠϯελϯεม਺΁୅ೖ͠·͢ɻ Πϯελϯεม਺΁୅ೖ͢Δͷ͸7JFXͰදࣔͷࡍʹ࢖͏͔ΒͰ͢ɻ

7JFX BQQWJFXTJOEFYIUNMFSC !CPPLTFBDIEPcCPPLc US UECPPLUJUMFUE UECPPLNFNPUE UEMJOL@UP4IPX CPPLUE UEMJOL@UP&EJU
FEJU@CPPL@QBUI CPPL UE UEMJOL@UP%FTUSPZ CPPL NFUIPEEFMFUF EBUB\DPOpSN"SFZPVTVSF ^UE US FOE දࣔ͸!CPPLTFBDIEPcCPPLcʙFOEͰߦ͍ͬͯ·͢ɻ !CPPLT಺ͷશσʔλͰϒϩοΫΛ܁Γฦ࣮͠ߦ͠ɺUJUMF΍NFNPΛද ࣔͨ͠ΓɺTIPXը໘΍FEJUը໘ɺ࡟আϘλϯͷϦϯΫΛੜ੒͠·͢ɻ ‏!CPPLT͸CPPL͕͍͔ͭ͘ ೖͬͨ഑ྻ ॳճͷCPPLUJUMFˠυϥ͑΋Μ ॳճͷCPPLNFNPˠ ωίܕϩϘοτͱͷ๯ݥ࿘ອᩀ

)551ϝιουɿ(&5 SPVUFTSC CPPLT@DPOUSPMMFSSCJOEFYΞΫγϣϯ CPPLTJOEFYIUNMFSC ෮श 3BJMTΞϓϦ͕ϦΫΤετΛड͚ͯ ϨεϙϯεΛฦ͢·ͰͷྲྀΕ

JOEFYΞΫγϣϯ CPPLT (&5 Ұཡը໘ Ҏ্ͷॲཧΛܦͯҰཡը໘͕දࣔ͞Ε͍ͯ·͢ɻ

(&5 CPPLTJE DSFBUF 1045 CPPLT VQEBUF CPPLTJE EFTUSPZ %&-&5& CPPLTJE ৽نొ࿥ SFEJSFDU SFEJSFDU ߋ৽ ฤू SFEJSFDU ৽نೖྗ ࡟আ ΞΫγϣϯ໊ )551ϝιου VSM ΞΫγϣϯ໊ )551ϝιου VSM ͜ͷਤ ͷݟํ ը໘͋Γ ը໘ͳ͠ ͍·આ໌ͨ͠Օॴ 165

(&5 CPPLTJE DSFBUF 1045 CPPLT VQEBUF 165 CPPLTJE EFTUSPZ %&-&5& CPPLTJE ৽نొ࿥ SFEJSFDU SFEJSFDU ߋ৽ ฤू SFEJSFDU ৽نೖྗ ࡟আ ΞΫγϣϯ໊ )551ϝιου VSM ΞΫγϣϯ໊ )551ϝιου VSM ͜ͷਤ ͷݟํ ը໘͋Γ ը໘ͳ͠ ͷ͜Γ͸·ͨ࣍ճҎ߱Ͱɾɾɾ

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22回 画像投稿アプリとCRUD基礎

Rails講義 第22回 画像投稿アプリとCRUD基礎

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Rails講義第22回画像投稿アプリとCRUD基礎

Rails講義第22回画像投稿アプリとCRUD基礎