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Desmistificando o Asset Pipeline
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Rondy Sousa
September 15, 2012
Programming
220
5
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Desmistificando o Asset Pipeline
Rondy Sousa
September 15, 2012
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Transcript
"44&51*1&-*/& desmistificando o Saturday, September 15, 12
!3POEZ Saturday, September 15, 12
Saturday, September 15, 12
Saturday, September 15, 12
Saturday, September 15, 12
"(&/%" Saturday, September 15, 12
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1PSRVFQSFDJTÂWBNPT 0WFSWJFX "(&/%" Saturday, September 15, 12
1PSRVFQSFDJTÂWBNPT 0WFSWJFX 4QSPDLFUT "(&/%" Saturday, September 15, 12
1PSRVFQSFDJTÂWBNPT 0WFSWJFX 4QSPDLFUT &YFD+4 UIFSVCZSBDFSFPVUSPTSVOUJNFT "(&/%" Saturday, September 15, 12
1PSRVFQSFDJTÂWBNPT 0WFSWJFX 4QSPDLFUT &YFD+4 UIFSVCZSBDFSFPVUSPTSVOUJNFT 1SÉQSPDFTTBEPSFTDVTUPNJ[BEPT "(&/%" Saturday, September 15,
12
1PSRVFQSFDJTÂWBNPT 0WFSWJFX 4QSPDLFUT &YFD+4 UIFSVCZSBDFSFPVUSPTSVOUJNFT 1SÉQSPDFTTBEPSFTDVTUPNJ[BEPT (FNJpDBOEPBTTFUTSFVTÂWFJT "(&/%" Saturday, September
15, 12
1PSRVFQSFDJTÂWBNPT 0WFSWJFX 4QSPDLFUT &YFD+4 UIFSVCZSBDFSFPVUSPTSVOUJNFT 1SÉQSPDFTTBEPSFTDVTUPNJ[BEPT (FNJpDBOEPBTTFUTSFVTÂWFJT %JDBT USVRVFTFPVUSBTGFJUJÇBSJBT "(&/%"
Saturday, September 15, 12
1PSRVFQSFDJTÂWBNPT 0WFSWJFX 4QSPDLFUT &YFD+4 UIFSVCZSBDFSFPVUSPTSVOUJNFT 1SÉQSPDFTTBEPSFTDVTUPNJ[BEPT (FNJpDBOEPBTTFUTSFVTÂWFJT %JDBT USVRVFTFPVUSBTGFJUJÇBSJBT "MUFSOBUJWBT
"(&/%" Saturday, September 15, 12
Saturday, September 15, 12
3"*-4¬36#: Saturday, September 15, 12
3"*-4¬36#: '0$0/0%0.°/*0%0130#-&." Saturday, September 15, 12
3"*-4¬36#: '0$0/0%0.°/*0%0130#-&." $0/7&/ª§040#3&$0/'*(63"ª§0 Saturday, September 15, 12
3"*-4¬36#: '0$0/0%0.°/*0%0130#-&." $0/7&/ª§040#3&$0/'*(63"ª§0 1"55&3/4*.1-°$*504 Saturday, September 15, 12
3"*-4¬36#: '0$0/0%0.°/*0%0130#-&." $0/7&/ª§040#3&$0/'*(63"ª§0 1"55&3/4*.1-°$*504 03("/*;"ª§0%&"326*704 Saturday, September 15, 12
&0/%&&6(6"3%0 04.&64"44&54 Saturday, September 15, 12
&0/%&&6(6"3%0 04.&64"44&54 public/* Saturday, September 15, 12
&0/%&&6(6"3%0 04.&64"44&54 public/* limbo Saturday, September 15, 12
"44&54 DTT KBWBTDSJQU JNBHFOT GPOUFT BVEJP WJEFP Saturday,
September 15, 12
40.04/&(-*(&/5&4 $0.$¶%*(0'30/5&/% .&"$6-1" Saturday, September 15, 12
.0%6-"3*;"ª§0 05*.*;"ª§0 & Saturday, September 15, 12
$"."-)"ª0%&"326*704 26&"6.&/5"0/¼.&30%& 3&26&454&"-"5/$*" ."/5&356%0&."1&/"4 6.*.&/40"326*70 ."/65&/ª§0$3*.*/04" 9 1) 2) Saturday,
September 15, 12
Saturday, September 15, 12
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%*.*/6*3/¼.&30%&3&26*4*ª¸&4)551 Saturday, September 15, 12
%*.*/6*3/¼.&30%&3&26*4*ª¸&4)551 .*/*'*$"3+"7"4$3*15&$44 Saturday, September 15, 12
%*.*/6*3/¼.&30%&3&26*4*ª¸&4)551 .*/*'*$"3+"7"4$3*15&$44 $0.10/&/5&4(;*1 Saturday, September 15, 12
IUUQXXXZPVUVCFDPNXBUDI W6M.Q*)),T Saturday, September 15, 12
"If a problem is very commom, we end up with
a proliferation of choices." :FIVEB,BU[ Saturday, September 15, 12
“...but we should have to make fewer decisions.” :FIVEB,BU[ Saturday,
September 15, 12
4&37*3"44&54/§0¬ 53*7*"- Saturday, September 15, 12
6. 1*1&-*/& 1"3"03&4("5& Saturday, September 15, 12
a linear sequence of specialized modules which performs a task,
like an assembly line in a factory. pipe.line noun Saturday, September 15, 12
1*1&-*/& the Saturday, September 15, 12
$0.1*-"3 1*1&-*/& the Saturday, September 15, 12
$0.1*-"3 $0/$"5&/"3 1*1&-*/& the Saturday, September 15, 12
$0.1*-"3 $0/$"5&/"3 .*/*'*$"3 1*1&-*/& the Saturday, September 15, 12
$0.1*-"3 $0/$"5&/"3 .*/*'*$"3 $0.13*.*3 1*1&-*/& the Saturday, September 15, 12
$0.1*-"3 $0/$"5&/"3 .*/*'*$"3 $0.13*.*3 $"$)ʅ*/( 1*1&-*/& the Saturday, September 15,
12
QVCMJD\KBWBTDSJQUTcTUZMFTIFFUTcJNBHFT^ 3"*-4 Saturday, September 15, 12
3"*-4 Saturday, September 15, 12
IUUQXXXZPVUVCFDPNXBUDI WD(E$*)IG"6 Saturday, September 15, 12
"We're elevating this stuff up to the same importance as
Ruby code itself." %BWJE))BOTTPO3BDF$BS%SJWFS Saturday, September 15, 12
$63"5&%'3".&803, Saturday, September 15, 12
rails new rs-on-rails Saturday, September 15, 12
%"%*4$¶3%*" (&.'*-& Saturday, September 15, 12
(FNpMF group :assets do gem 'sass-rails', '~> 3.2.3' # gem
'therubyracer', :platforms => :ruby gem 'coffee-rails', '~> 3.2.1' gem 'uglifier', '>= 1.0.3' end Saturday, September 15, 12
0"44&51*1&-*/&*.1¸& 6."/07"&45365363" 13"03("/*;"ª§0%& "44&54 Saturday, September 15, 12
0"44&51*1&-*/&*.1¸& 6."/07"&45365363" 13"03("/*;"ª§0%& "44&54 Saturday, September 15, 12
0"44&51*1&-*/&46(&3& 6."/07"&45365363" 13"03("/*;"ª§0%& "44&54 Saturday, September 15, 12
BQQBTTFUT MJCBTTFUT WFOEPSBTTFUT Saturday, September 15, 12
Saturday, September 15, 12
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Saturday, September 15, 12
"44&5#6/%-&4 Saturday, September 15, 12
"44&5#6/%-&4 BQQMJDBUJPOKT BQQMJDBUJPODTT Saturday, September 15, 12
<head> <title>Rs on Rails</title> <%= stylesheet_link_tag "application", media: "all" %>
<%= javascript_include_tag "application" %> <%= csrf_meta_tags %> </head> BQQWJFXTMBZPVUTBQQMJDBUJPOIUNMFSC Saturday, September 15, 12
Saturday, September 15, 12
BQQMJDBUJPODTT Saturday, September 15, 12
BQQMJDBUJPODTT SFTFUDTT MBZPVUDTT OBWJHBUJPODTT TJEFCBSDTT UZQPHSBQIZDTT GPSNTDTT UIFNFDTT Saturday, September
15, 12
/* *= require_self *= require reset *= require layout *=
require sidebar *= require navigation *= require typography *= require forms *= require colors */ BQQWJFXTMBZPVUTBQQMJDBUJPODTT Saturday, September 15, 12
/* *= require_self *= require reset *= require layout *=
require sidebar *= require navigation *= require typography *= require forms *= require colors */ BQQWJFXTMBZPVUTBQQMJDBUJPODTT no jargão, o “manifesto” Saturday, September 15, 12
Saturday, September 15, 12
DPOpHFOWJSPONFOUTEFWFMPQNFOUSC RsOnRails::Application.configure do config.assets.debug = false end Saturday, September 15,
12
Saturday, September 15, 12
DPOpHFOWJSPONFOUTEFWFMPQNFOUSC RsOnRails::Application.configure do config.assets.compress = true end Saturday, September 15,
12
Saturday, September 15, 12
DPOpHFOWJSPONFOUTEFWFMPQNFOUSC RsOnRails::Application.configure do config.assets.digest = true end Saturday, September 15,
12
Saturday, September 15, 12
http://localhost:3000/assets/application.css http://localhost:3000/assets/application.js Saturday, September 15, 12
http://localhost:3000/assets/application.css http://localhost:3000/assets/application.js Saturday, September 15, 12
http://localhost:3000/assets/application.css 04130$,&54.0/5"6." 6."3"$,"11/"305" BTTFUT http://localhost:3000/assets/application.js Saturday, September 15, 12
IUUQTHJUIVCDPNSBJMTSBJMTCMPCTUBCMFBDUJPOQBDLMJC TQSPDLFUTCPPUTUSBQSC- Saturday, September 15, 12
."44¶&. %&7&-01.&/5 Saturday, September 15, 12
$0.0'*$"&. 45"(*/(130%6$5*0/ Saturday, September 15, 12
130%6$5*0/ 4FSWJEPSXFC TFSWFPTBSRVJWPT QSÉDPNQJMBEPT Saturday, September 15, 12
DPOpHFOWJSPONFOUTEFWFMPQNFOUSC RsOnRails::Application.configure do config.assets.compress = false config.assets.debug = true end
Saturday, September 15, 12
DPOpHFOWJSPONFOUTEFWFMPQNFOUSC RsOnRails::Application.configure do config.assets.compress = false config.assets.debug = true end
RsOnRails::Application.configure do config.assets.compress = true config.assets.compile = false config.assets.digest = true end DPOpHFOWJSPONFOUTQSPEVDUJPOSC Saturday, September 15, 12
04"44&54"/5&4%&&/53"3&.130%6ª§0 064&+" 13&$*4".04 13¬$0.1*-"3 Saturday, September 15, 12
$ rake assets:precompile Saturday, September 15, 12
$ rake assets:precompile Saturday, September 15, 12
$ rake assets:precompile Saturday, September 15, 12
/assets/application-9d75ac5c90e71cbe60d8e612a438af43.css /assets/application-9d75ac5c90e71cbe60d8e612a438af43.css.gz Saturday, September 15, 12
/assets/application-9d75ac5c90e71cbe60d8e612a438af43.css ✓$0.1*-"%0 ✓$0/$"5&/"%0 ✓.*/*'*$"%0 ✓$"$)ʅ&% '*/(&313*/5 ✓$0.13*.*%0 /assets/application-9d75ac5c90e71cbe60d8e612a438af43.css.gz Saturday, September
15, 12
Saturday, September 15, 12
."/*'&45:.- Saturday, September 15, 12
--- Aller_Rg.ttf: Aller_Rg-89086a78088e0ccdf7d5f3a2413b890c.ttf rails.png: rails-be8732dac73d845ac5b142c8fb5f9fb0.png application.js: application-d47f12ee8bceef5910c0e6d180ecf97c.js application.css: application-cf5421f21a42b9b487d6131006c60539.css QVCMJDBTTFUTNBOJGFTUZNM
Saturday, September 15, 12
/§064"3¥4-*7& $0.1*-"5*0/&. 130%6ª§0 Saturday, September 15, 12
70-5"/%0"0"11-*$"5*0/ #6/%-& Saturday, September 15, 12
Saturday, September 15, 12
$"%0+26&3:26& %&7&3*"&45"3"26* Saturday, September 15, 12
4&(63"&44"%¼7*%" Saturday, September 15, 12
13¬130$&44"%03&4 Saturday, September 15, 12
TQFBLFSTKT Saturday, September 15, 12
Saturday, September 15, 12
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GPSNTDTT Saturday, September 15, 12
Saturday, September 15, 12
GPSNTDTTTDTT Saturday, September 15, 12
GPSNTDTTTDTTFSC Saturday, September 15, 12
GPSNTDTTTDTTFSC $"%&*"%&13¬130$&44".&/50 Saturday, September 15, 12
IUUQTHJUIVCDPNNFUBTLJMMTMFTTSBJMT Saturday, September 15, 12
IUUQTHJUIVCDPNMVDBTNB[[BSVCZTUZMVT Saturday, September 15, 12
4130$,&54 Saturday, September 15, 12
require "sprockets" Saturday, September 15, 12
require "sprockets" env = Sprockets::Environment.new Saturday, September 15, 12
require "sprockets" env = Sprockets::Environment.new env.append_path "assets/javascripts" Saturday, September 15,
12
require "sprockets" env = Sprockets::Environment.new env.append_path "assets/javascripts" application_js = env["application.js"]
Saturday, September 15, 12
require "sprockets" env = Sprockets::Environment.new env.append_path "assets/javascripts" application_js = env["application.js"]
logical path Saturday, September 15, 12
puts application_js.inspect Saturday, September 15, 12
puts application_js.inspect # #<Sprockets::BundledAsset:0x3fd7304a3570 # pathname="/Users/rondy/sprockets/assets/javascripts/application.js", # mtime=2012-09-02 17:08:34 -0300,
# digest="e643622cbd2c3f4d29b5fad9e329b2e8"> Saturday, September 15, 12
puts application_js Saturday, September 15, 12
puts application_js # contents of `application.js` with its concatenated dependencies
Saturday, September 15, 12
"1&/"4."*46." .06/5"#-&3"$,"11 Saturday, September 15, 12
require 'sprockets' map '/assets' do environment = Sprockets::Environment.new environment.append_path 'app/assets/javascripts'
environment.append_path 'app/assets/stylesheets' run environment end map '/' do run YourRackApp end Saturday, September 15, 12
4130$,&54 Saturday, September 15, 12
guard 'sprockets', destination: "build/javascripts", asset_paths: ['/src/javascripts'] do watch (%r{src/javascripts/application.js}) end
(VBSEpMF Saturday, September 15, 12
70-5"/%0"0 (&.'*-&%" %*4$¶3%*" Saturday, September 15, 12
(FNpMF group :assets do gem 'sass-rails', '~> 3.2.3' # gem
'therubyracer', :platforms => :ruby gem 'coffee-rails', '~> 3.2.1' gem 'uglifier', '>= 1.0.3' end Saturday, September 15, 12
gem 'therubyracer', :platforms => :ruby Saturday, September 15, 12
&9&$+4 Saturday, September 15, 12
&9&$+4 +"7"4$3*15 36#: Saturday, September 15, 12
require "execjs" Saturday, September 15, 12
require "execjs" ExecJS.eval "'red yellow blue'.split(' ')" Saturday, September 15,
12
require "execjs" ExecJS.eval "'red yellow blue'.split(' ')" # => ["red",
"yellow", "blue"] Saturday, September 15, 12
$PGGF4DSJQU 6HMJGZGSJFOET Saturday, September 15, 12
$PGGF4DSJQU 6HMJGZGSJFOET &YFD+4 Saturday, September 15, 12
36/5*.& $PGGF4DSJQU 6HMJGZGSJFOET &YFD+4 Saturday, September 15, 12
36/5*.& $PGGF4DSJQU 6HMJGZGSJFOET /PEFKT &YFD+4 Saturday, September 15, 12
36/5*.& $PGGF4DSJQU 6HMJGZGSJFOET /PEFKT "QQMF +BWB4DSJQU$PSF &YFD+4 Saturday, September 15,
12
36/5*.& $PGGF4DSJQU 6HMJGZGSJFOET /PEFKT "QQMF +BWB4DSJQU$PSF .JDSPTPGU8JOEPXT 4DSJQU)PTU +4DSJQU &YFD+4
Saturday, September 15, 12
36/5*.& $PGGF4DSJQU 6HMJGZGSJFOET /PEFKT UIFSVCZSBDFS "QQMF +BWB4DSJQU$PSF .JDSPTPGU8JOEPXT 4DSJQU)PTU +4DSJQU
&YFD+4 Saturday, September 15, 12
36/5*.& $PGGF4DSJQU 6HMJGZGSJFOET /PEFKT UIFSVCZSBDFS UIFSVCZSIJOP "QQMF +BWB4DSJQU$PSF .JDSPTPGU8JOEPXT 4DSJQU)PTU
+4DSJQU &YFD+4 Saturday, September 15, 12
Saturday, September 15, 12
gem 'therubyracer', :platforms => :ruby Saturday, September 15, 12
gem 'therubyrhino', :platforms => :jruby Saturday, September 15, 12
Saturday, September 15, 12
%*$"4 53626&4& 0653"4 '&*5*ª"3*"4 Saturday, September 15, 12
4130$,&5494"44 Saturday, September 15, 12
$base-font-color: #555555; BQQBTTFUTTUZMFTIFFUTDPNNPODTTTDTT Saturday, September 15, 12
/* *= require common */ body { color: $base-font-color; }
BQQBTTFUTTUZMFTIFFUTBQQMJDBUJPODTTTDTT $base-font-color: #555555; BQQBTTFUTTUZMFTIFFUTDPNNPODTTTDTT Saturday, September 15, 12
Saturday, September 15, 12
SFRVJSFTBTT Saturday, September 15, 12
/* */ @import "common.css.scss"; body { color: $base-font-color; } BQQBTTFUTTUZMFTIFFUTBQQMJDBUJPODTTTDTT
Saturday, September 15, 12
$3*"/%0/04404 13¶13*0413¬ 130$&44"%03&4 Saturday, September 15, 12
class TimestampProcessor < Sprockets::Processor end MJCQSPDFTTPSTUJNFTUBNQ@QSPDFTTPSSC Saturday, September 15, 12
class TimestampProcessor < Sprockets::Processor def evaluate(context, locals) end end MJCQSPDFTTPSTUJNFTUBNQ@QSPDFTTPSSC
Saturday, September 15, 12
class TimestampProcessor < Sprockets::Processor def evaluate(context, locals) data end end
MJCQSPDFTTPSTUJNFTUBNQ@QSPDFTTPSSC Saturday, September 15, 12
class TimestampProcessor < Sprockets::Processor def evaluate(context, locals) current_timestamp = DateTime.now.to_s(:timestamp)
["/* #{current_timestamp} */", data].join("\n") end end MJCQSPDFTTPSTUJNFTUBNQ@QSPDFTTPSSC Saturday, September 15, 12
require "processors/timestamp_processor" Rails.application.assets. register_postprocessor("text/css", TimestampProcessor) DPOpHJOJUJBMJ[FSTTQSPDLFUTSC Saturday, September 15, 12
require "processors/timestamp_processor" Rails.application.assets. register_postprocessor("text/css", TimestampProcessor) Rails.application.assets. register_postprocessor("application/javascript", TimestampProcessor) DPOpHJOJUJBMJ[FSTTQSPDLFUTSC Saturday,
September 15, 12
Saturday, September 15, 12
(&.*'*$"/%0"44&54 3&64¥7&*4 Saturday, September 15, 12
(&.*'*$"/%0"44&54 3&64¥7&*4 ","$0.04&34)08 Saturday, September 15, 12
4)08 /§04)08%&45 Saturday, September 15, 12
var Showdest = { description: "Are you showdest, my friend?"
} alert(Showdest.description); //= require_self //= require showdest BQQBTTFUTKBWBTDSJQUTTIPXEFTUKT BQQBTTFUTKBWBTDSJQUTBQQMJDBUJPOKT Saturday, September 15, 12
Saturday, September 15, 12
$ bundle gem showdest Saturday, September 15, 12
$ bundle gem showdest $ cd showdest Saturday, September 15,
12
$ bundle gem showdest $ cd showdest $ mkdir -p
vendor/assets/javascript Saturday, September 15, 12
$ bundle gem showdest $ cd showdest $ mkdir -p
vendor/assets/javascript $ mv ~/code/rs-on-rails/app/assets/javascripts/showdest.js \ vendor/assets/javascript Saturday, September 15, 12
Saturday, September 15, 12
group :assets do gem 'showdest', path: '/Users/rondy/code/showdest' end (FNpMF Saturday,
September 15, 12
$ bundle && rails s Saturday, September 15, 12
$ bundle && rails s Saturday, September 15, 12
module Showdest class Engine < Rails::Engine end end TIPXEFTUMJCTIPXEFTUFOHJOFSC Saturday,
September 15, 12
module Showdest class Engine < Rails::Engine end end TIPXEFTUMJCTIPXEFTUFOHJOFSC Gem::Specification.new
do |gem| gem.add_dependency "railties", ">= 3.1", "< 5.0" end TIPXEFTUTIPXEFTUHFNTQFD Saturday, September 15, 12
require "showdest/version" require "showdest/engine" module Showdest end TIPXEFTUMJCTIPXEFTUSC Saturday, September
15, 12
$ bundle && rails s Saturday, September 15, 12
$ bundle && rails s Saturday, September 15, 12
-&.#3"%0+26&3: Saturday, September 15, 12
(&. 3"*-4&/(*/& Saturday, September 15, 12
Saturday, September 15, 12
Saturday, September 15, 12
Saturday, September 15, 12
"-5&3/"5*7"4 Saturday, September 15, 12
rails new rs-on-rails \ --skip-sprockets Saturday, September 15, 12
IUUQEPDVNFOUDMPVEHJUIVCDPNKBNNJU Saturday, September 15, 12
IUUQTHJUIVCDPNMJWJOHTPDJBMSBLFQJQFMJOF Saturday, September 15, 12
"*/%")¥.6*50."*4 Saturday, September 15, 12
IUUQHVJEFTSVCZPOSBJMTPSHBTTFU@QJQFMJOFIUNM Saturday, September 15, 12
IUUQDPEFSCFSSZNFCMPHBTTFUQJQFMJOFGPSEVNNJFT Saturday, September 15, 12
IUUQBLJUBPOSBJMTDPNBTTFUQJQFMJOFQBSBJOJDJBOUFT IUUQBLJUBPOSBJMTDPNBTTFUQJQFMJOFQBSBJOJDJBOUFTQBSUF Saturday, September 15, 12
IUUQSBJMTDBTUTDPNFQJTPEFTVOEFSTUBOEJOHUIFBTTFUQJQFMJOF IUUQSBJMTDBTUTDPNFQJTPEFTBTTFUQJQFMJOFJOQSPEVDUJPO Saturday, September 15, 12
IUUQCMPHNJOVUFTDPNVOUBOHMJOHUIFSBJMTBTTFUQJQFMJOFQBSUDBDIFTBOEDPNQBTT IUUQCMPHNJOVUFTDPNVOUBOHMJOHUIFSBJMTBTTFUQJQFMJOFQBSUQSPEVDUJPO IUUQCMPHNJOVUFTDPNVOUBOHMJOHUIFSBJMTBTTFUQJQFMJOFQBSUDPOpHVSBUJPO IUUQCMPHNJOVUFTDPNVOUBOHMJOHUIFSBJMTBTTFUQJQFMJOFQBSUUSPVCMFTIPPUJOH Saturday, September 15, 12
IUUQQSBHQSPHDPNCPPLXBSWUIFSBJMTWJFX Saturday, September 15, 12
Saturday, September 15, 12
&45".04$0/53"5"/%0 5$) IUUQQMBUBGPSNBUFDDPNCSDPOUBDU Saturday, September 15, 12
0#3*("%0 Saturday, September 15, 12