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ୀ۶ͳ͜ͱ
3VCZʹ͓Ͷ͕͍͠Α͏
2020.12.27.
Tama.rb #25 ΕLTձ
@makicamel
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w!NBLJDBNFMݪສق
wɹ
w3VCZͱϏʔϧɹɹͱ͓ञ͕͖
ࣗݾհ
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͓खݩͷRails ΞϓϦʹ
BQQMJDBUJPO@DPOUSPMMFSSC
͍ͭ͋͘Γ·͔͢ʁ
ಥવͰ͕͢
ܧঝͱϝλϓϩάϥϛϯάຬࡌͳΞϓϦέʔγϣϯίʔυͰΞΫγϣϯͱϑΟϧλʹ·ͳ͍ͨΊͷ(FNΛ࡞ͬͨ
IUUQTTQFBLFSEFDLDPNNBLJDBNFMMFUTFOKPZDSFBUJOHHFNT
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˞݄࣌
"/%1"%
# => 325
$ find . -name application_controller.rb | wc -l
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˞݄ݱࡏ
"/%1"%
$ fd application_controller.rb | wc -l
# => 49
# => 325
˞݄࣌
$ find . -name application_controller.rb | wc -l
85%ݮʂ
͍͢͝Ͷ
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ॳख
•ͻͱͭͻͱͭखͰஔ͖͑Δ
•σΟϨΫτϦຖʹ͍͚͍͍ͯͣ͠
•ࠓ·Ͱͷ׳ྫकΒΕͯແடংʹͳΒͳ͍
•2 PullRequests Ͱ 40 ϑΝΠϧআ
•࣌ؒͱࠜؾͱूதྗͷඞཁͳ࡞ۀ
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खΛಈ͔ͯ͠ؾͮ͘
•εΫϦϓτͰ͍͚ΔͷͰʁ
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ཌ݄༵
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ཌ݄༵
240 ϑΝΠϧদా͞Μ͕ͯ͘͠Ε·ͨ͠
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εΫϦϓτͰΔͱ
ͳʹ͕͏Ε͍͠ͷ͔
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εΫϦϓτͰΔͱ
•࡞ۀϛε͕ͳ͍
•ਓؒؒҧ͑Δ
•ϓϩάϥϜ໊લ͕ࣅ͍ͯΔϞδϡʔϧ͕͋ͬͯؒҧ͑ͳ͍
•ϛεʹҙΛΘͳͯ͘Α͍ͷͰϨϏϡʔෛ୲͕ݮΔ
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εΫϦϓτͰΔͱ
•࠶ݱੑ͕ߴ͍
•ߟྀ࿙Ε͕͋ͬͯԿճͰΓ͠Մೳ
•ख࡞ۀͰಉ͡࡞ۀɾݕূΛ܁Γฦ͞ͳͯ͘Α͍
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εΫϦϓτͰΔͱ
•࠶ར༻ੑ͕ߴ͍
•݅Λม͑ͯΑΓ෯͍ʹద༻Ͱ͖Δ
•ૣ͍
•80 ϑΝΠϧͷআ͕ඵ
•ίϛοτͷ࡞Ͱ͖Δ
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εΫϦϓτͰΔͱ
•࣮֬
•ʮ֬ೝͷ Rails.application.eager_load! Εͨʂʯͱ͔ͳ͍
•ʮrubocop -a Εͨʂʯͱ͔ͳ͍
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εΫϦϓτͰΔͱ
•ؾ͍͍࣋ͪ
•Ruby ͷΑ͞
•୯७࡞ۀͭ·Βͳ͍ɾ͖͋Δɾूதྗɾࠜؾ͕ඞཁ
•ࣄͷ߹ؒʹؾ߹͍Ͱ͍ͬͯΔͷͰΤλΔ
•ؾ͍͍࣋ͪͱΤλΒͳ͍ʂ
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εΫϦϓτͰΔͱ
•ͷΓ͚ํ͕ҟͳΔ
•ख࡞ۀ࣌ɿʮਓ͕ؒཧղ͢Δҙຯͷ୯Ґʯ
•Θ͕ͨ͠࡞ۀͨ͠ͷ໊લۭؒ୯Ґ
•εΫϦϓτ࣌ɿʮઃఆͨ݅͠୯Ґʯ
•দా͞Μ͕࠷ॳʹઃఆͨ݅͠ʮ͔ΒͬΆͳίϯτϩʔϥʯ
•ҙຯ͝ͱʹద༻Ͱ͖Δ͕ʮશ෦͢ʯͱ͍͏࡞ઓͰͬͨํָ͕
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ͬͯΈΑ͏
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DBTF
•ActiveSupport::Concern ͷ included ϒϩοΫͷ༻ΛݮΒ͍ͨ͠
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DBTF
•ActiveSupport::Concern ͷ included ϒϩοΫͷ༻ΛݮΒ͍ͨ͠
module EnergeticGreeting
extend ActiveSupport::Concern
included do
def hi
p '٩(ˊᗜˋ*)و'
end
end
end
class GreetingA
include EnergeticGreeting
end
GreetingA.new.hi
# => "٩(ˊᗜˋ*)و"
•include ͞Εͨ࣌ʹ
ϒϩοΫͷίʔυ͕࣮ߦ͞ΕΔ
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•Ϟδϡʔϧ͕ include ͞ΕΔʹ࣮ߦ͞ΕΔ
•ϞδϡʔϧͷΠϯελϯεมʹϒϩοΫΛ࣋ͪଓ͚Δ
•ਅͷϝιουఆٛʹؾΛΔඞཁ͕͋Δ
•ϦϑΝΫλϦϯάʹ༨ܭͳίετ͕͔͔Δ
includedϒϩοΫ
ͨ·ʹ͏ʹ
ΜΓͩΑ
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module DepressedGreeting
def hi
p 'ʢ◞‸◟ʣ'
end
end
class GreetingB
include DepressedGreeting
end
GreetingB.new.hi
# => “ʢ◞‸◟ʣ”
includedϒϩοΫ
•Πϯελϯεϝιου
Module#includeͰੜͤΔ
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module EnergeticGreeting
extend ActiveSupport::Concern
included do
def hi
p '٩(ˊᗜˋ*)و'
end
end
end
class GreetingA
def hi
p 'hi'
end
include EnergeticGreeting
end
GreetingA.new.hi
# => "٩(ˊᗜˋ*)و"
module DepressedGreeting
def hi
p 'ʢ◞‸◟ʣ'
end
end
class GreetingB
def hi
p 'hi'
end
include DepressedGreeting
end
GreetingB.new.hi
# => "hi"
ʮਅͷϝιουఆٛʯ
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module EnergeticGreeting
extend ActiveSupport::Concern
included do
def hi
p '٩(ˊᗜˋ*)و'
end
end
end
class GreetingA
def hi
p 'hi'
end
include EnergeticGreeting
end
GreetingA.new.hi
# => "٩(ˊᗜˋ*)و"
ʮਅͷϝιουఆٛʯ
module EnergeticGreeting
extend ActiveSupport::Concern
included do
def hi
p '٩(ˊᗜˋ*)و'
end
end
end
class GreetingA2
include EnergeticGreeting
def hi
p 'hi'
end
end
GreetingA2.new.hi
# => "hi"
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•Module#include
•ΫϥεͷܧঝؔͷؒʹϞδϡʔϧ͕ૠೖ͞ΕΔ
•ͨͩͷΦʔϓϯΫϥεͳͷͰݺͼग़͠ݩ͕༏ઌ
•ActiveSupport::Concern
•ࠇຐज़Λར༻
•هड़͕ޙͷํ͕༏ઌ
Ή͔͍ͣ͠Ͷ͐
ʮਅͷϝιουఆٛʯ
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module EnergeticGreeting
extend ActiveSupport::Concern
included do
def hi
p '٩(ˊᗜˋ*)و'
end
end
end
class GreetingA
def hi
p 'hi'
end
include EnergeticGreeting
end
GreetingA.new.hi
# => "٩(ˊᗜˋ*)و"
ʮਅͷϝιουఆٛʯ
module EnergeticGreeting
extend ActiveSupport::Concern
included do
def hi
p '٩(ˊᗜˋ*)و'
end
end
end
class GreetingA2
include EnergeticGreeting
def hi
p 'hi'
end
end
GreetingA2.new.hi
# => "hi"
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•Ϟδϡʔϧ͕ include ͞ΕΔʹ࣮ߦ͞ΕΔ
•ϞδϡʔϧͷΠϯελϯεมʹϒϩοΫΛ࣋ͪଓ͚Δ
•ਅͷϝιουఆٛʹؾΛΔඞཁ͕͋Δ
•ϦϑΝΫλϦϯάʹ༨ܭͳίετ͕͔͔Δ
includedϒϩοΫ
আΛࢼΈͨ PullRequest ͕͋ͬͨ
ਅͷϝιουఆ͕ٛݪҼͰClose
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Ϟδϡʔϧͷϝιου͕࠶ఆٛ͞Ε͍ͯͳ͚Ε
included ϒϩοΫΛ֎͍͍ͯ͠ͱݴ͑ΔͷͰ
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εΫϦϓτσϏϡʔ
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•খ࢝͘͞Ίͨ
•͜ͷ࣌ͷରϑΝΠϧ11ϑΝΠϧ
•ϨϏϡʔ͕༰қ
•εΫϦϓτ description ʹష͓ͬͯ͘
•ϨϏϡʔͷҰॿʹͳΔ͔
•ϑΟʔυόοΫ͕͋ͬͯษڧʹͳͬͨΓ͢Δ
εΫϦϓτσϏϡʔ
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•`ʢόοΫΫΥʔτʣ
•ίϚϯυͱ࣮ͯ͠ߦ͞Εɺͦͷඪ४ग़ྗ͕จࣈྻͱͯ͠༩͑ΒΕΔ
•͜ͷதͷจࣈྻμϒϧΫΥʔτͱಉ༷ͷղऍͱࣜల։͕ߦΘΕΔ
ΜΓͳಓ۩ͨͪ
Ϧςϥϧ 3VCZϦϑΝϨϯεϚχϡΞϧ
IUUQTEPDTSVCZMBOHPSHKBEPDTQFDqJUFSBMIUNMDPNNBOE
files = `git grep -l "included" -- 'app/controllers'`
`git commit -m 'Inline #{namespace}::#{module_name}'`
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•git grep
•git ཧԼͷϑΝΠϧΛ grep
•ਖ਼نදݱͱ͔σΟϨΫτϦࢦఆ(include/exclude)ͱ͔
͍ΖΜͳΦϓγϣϯ͕͋ͬͯΜΓ
ΜΓͳಓ۩ͨͪ
files = `git grep -l "included" -- 'app/controllers'`
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•File.read
•ϑΝΠϧಡΈࠐΈ
•ϑΝΠϧύε͕Θ͔ΕಡΈࠐΜͰจࣈྻͱͯ͠ॲཧͰ͖Δ
ΜΓͳಓ۩ͨͪ
src = File.read File.expand_path(filename)
*0SFBE 3VCZϦϑΝϨϯεϚχϡΞϧ
IUUQTEPDTSVCZMBOHPSHKBNFUIPE*0JSFBEIUNM
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•String#scan
•Ϩγʔόʹର͠ਖ਼نදݱΛ܁Γฦ͠Ϛον͠ɺ෦จࣈྻͷྻΛฦ͢
•ϚονάϧʔϓΜΓͦ͏
ΜΓͳಓ۩ͨͪ
4USJOHTDBO 3VCZϦϑΝϨϯεϚχϡΞϧ
IUUQTEPDTSVCZMBOHPSHKBNFUIPE4USJOHJTDBOIUNM
methods = src.scan(/def (.*)$/).flatten
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•sed
•จࣈྻΛஔͨ͠Γআͨ͠ΓςΩετॲཧͷͰ͖ΔίϚϯυ
•ϫϯϥΠφʔͰಛʹΜΓ
ΜΓͳಓ۩ͨͪ
TFEίϚϯυcίϚϯυͷ͍ํ -JOVY
cIZESPDVMͷϝϞ
IUUQTIZESPDVMHJUIVCJPXJLJDPNNBOETTFEIUNM
`sed -i '' '#{line}d' #{filename}`
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DBTF
•1Օॴ͔Β͔͠ݺΕ͍ͯͳ͍ϞδϡʔϧΛআͯ͠ΠϯϥΠϯʹ͍ͨ͠
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DBTF
•1Օॴ͔Β͔͠ݺΕ͍ͯͳ͍ϞδϡʔϧΛআͯ͠ΠϯϥΠϯʹ͍ͨ͠
•FatίϯτϩʔϥରࡦʢͨͿΜʣͰϝιουΛϞδϡʔϧʹΓग़͍ͯ͠Δ
•ίʔυ͕͍ͮΒ͍
•ϦϑΝΫλϦϯά࣌ʹϞδϡʔϧશ෦֬ೝ͢Δඞཁ͕͋ͬͯίετ
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DBTF
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•String#remove!
•จࣈྻਖ਼نදݱΛड͚औΓɺϚονͨ͠จࣈྻΛ܁Γฦ͠আ͢Δ
•ࡶʹ͑Δॻ͖৺͕ͱ͖ͯ͢
ΜΓͳಓ۩ͨͪ
SFNPWF 4USJOH
"1*EPDL
IUUQTBQJEPDLDPNSBJMTW4USJOHSFNPWF
target_src.remove!(
/module .*#{module_name}$/,
/^\s*extend ActiveSupport::Concern/,
/^\s*included do/
)
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•String#sub!
•จࣈྻਖ਼نදݱΛड͚औΓɺϚονͨ͠࠷ॳͷจࣈྻΛஔ͢Δ
•ϑΝΠϧ A ͷ༰ΛϑΝΠϧ B ʹ࣋ͬͯ͘Δ࣌ʹΜΓ
ΜΓͳಓ۩ͨͪ
4USJOHTVC 3VCZϦϑΝϨϯεϚχϡΞϧ
IUUQTEPDTSVCZMBOHPSHKBNFUIPE4USJOHJTVCIUNM
src.sub!(/^\s*include #{module_name}$/, target_src)
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•String#[]
•ୈҰҾʹਖ਼نදݱɺୈೋҾʹintegerΛऔͬͯ
ୈೋҾ൪ͷׅހʹϚον͢Δ࠷ॳͷ෦จࣈྻΛฦ͢
ΜΓͳಓ۩ͨͪ
4USJOH<> 3VCZϦϑΝϨϯεϚχϡΞϧ
IUUQTEPDTSVCZMBOHPSHKBNFUIPE4USJOHJCEIUNM
namespace = src[/class (.*?)Controller/, 1]
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DBTF
•RailsͷϞσϧͷΠϯελϯεϝιουͷ͏ͪ
ಛఆͷจࣈྻΛؚΉϞσϧͱϝιουΛྻڍ͍ͨ͠
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DBTF
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•rails runner
•Rails ͷจ຺Ͱ Ruby ίʔυΛ࣮ߦͰ͖Δ
•Rails ʹฉ͘ͱ͍Ζ͍Ζڭ͑ͯ͘ΕΔ
ΜΓͳಓ۩ͨͪ
3BJMTͷίϚϯυϥΠϯπʔϧ3BJMTΨΠυ
IUUQTSBJMTHVJEFTKQDPNNBOE@MJOFIUNMSBJMTSVOOFS
rails runner script.rb
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•Object#methods, Module#instance_methods
•Ϩγʔό͕͍࣋ͬͯΔϝιου / ΠϯελϯεϝιουΛҰ͢Δ
ΜΓͳಓ۩ͨͪ
0CKFDUNFUIPET 3VCZϦϑΝϨϯεϚχϡΞϧ
IUUQTEPDTSVCZMBOHPSHKBNFUIPE0CKFDUJNFUIPETIUNM
.PEVMFJOTUBODF@NFUIPET 3VCZϦϑΝϨϯεϚχϡΞϧ
IUUQTEPDTSVCZMBOHPSHKBNFUIPE.PEVMFJJOTUBODF@NFUIPETIUNM
klass.instance_methods.select { |method| method.to_s.start_with? ‘awesome' }
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•Method#source_location
•ϝιου͕ ruby Ͱఆٛ͞Ε͍ͯΔ߹ίʔυͷϑΝΠϧ໊ͱߦ൪߸Λฦ͢
•ϝιου͕ C Ͱఆٛ͞Ε͍ͯΔ߹ nil Λฦ͢
•e.g. ϓϩμΫγϣϯίʔυͰఆٛ͞Εͨಛఆͷ໊લͷϝιουΛநग़͢Δ
ΜΓͳಓ۩ͨͪ
.FUIPETPVSDF@MPDBUJPO 3VCZϦϑΝϨϯεϚχϡΞϧ
IUUQTEPDTSVCZMBOHPSHKBNFUIPE.FUIPEJTPVSDF@MPDBUJPOIUNM
if klass.instance_method(:awesome).source_location.first.include? "my_app"
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•Method#source
•ruby Ͱॻ͔ΕͨϝιουͷίʔυΛऔಘ͢Δ
•display ΛݺͿͱਓؒʹ༏͘͠ग़ྗ͢Δ
ΜΓͳಓ۩ͨͪ
NFUIPE@TPVSDFNFUIPE@TPVSDFSCBUWuCBOJTUFSNFUIPE@TPVSDF
IUUQTHJUIVCDPNCBOJTUFSNFUIPE@TPVSDFCMPCWMJCNFUIPE@TPVSDFSC--
if klass.instance_method(method).source =~ /\bhi\b/
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·ͱΊ
•εΫϦϓτΜΓ
•.rb ϑΝΠϧͨͩͷจࣈྻ
•Ruby Rails ͍ΖΜͳ͜ͱΛ͍ͬͯΔ
•;ͩΜ͍ͬͯΔϝιουݟํΛม͑Δͱੈք͕͕Δ
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·ͱΊ
ୀ۶ͳ͜ͱ Ruby ʹ͓ئ͍ͯ͠
͓͠Ζ͍͜ͱΛΖ͏
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͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠