Mais conteúdo relacionado Semelhante a HTML5 with Play Scala, CoffeeScript and Jade - Jfokus 2012 (8) HTML5 with Play Scala, CoffeeScript and Jade - Jfokus 20121. with Play Scala, CoffeeScript and Jade
Matt Raible
http://raibledesigns.com
Photos by Trish - http://mcginityphoto.com
2. Introductions
‣ Have you used HTML5?
‣ Have you used Play
Framework?
‣ Have you tried Scala?
‣ Tried CoffeeScript?
‣ Scalate or Jade?
© 2012 Raible Designs 2
3. Who is Matt Raible?
Father, Skier, Cyclist
Web Framework Connoisseur
Founder of AppFuse
Blogger on raibledesigns.com
© 2012 Raible Designs
4. Agenda
‣ Introductions
‣ Why am I doing this talk?
‣ What are these technologies?
‣ My Development Experience
‣ Demo
‣ Q and A
‣ Conclusion
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5. Why am I doing this talk?
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6. Why am I doing this talk?
http://www.flickr.com/photos/question_everything/2931013045/
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7. Why am I doing this talk?
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8. Why am I doing this talk?
‣ I like a Challenge to...
- Learn Scala
- Via Play!
- And Jade is cool too!
- So is CoffeeScript!
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9. Why am I doing this talk?
‣ Honestly, it’s because of James Strachan...
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10. Why am I doing this talk?
‣ Who likes beer too!
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11. Why am I doing this talk?
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13. HTML5
http://on.wsj.com/tEGIJL
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14. How do you write HTML5?
<!DOCTYPE html>
<article> <aside> <section>
<header> <footer> <nav>
<audio> <canvas> <video>
<datalist> <details>
<applet> <center> <font>
<frame> <frameset>
http://www.w3schools.com/html5/html5_reference.asp
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15. CSS3
‣ Animated Transitions
transform: rotateY(180deg);
‣ Rounded Corners
border-radius: 8px 8px 0 0;
‣ Drop Shadows
box-shadow: 2px 2px 4px 4px;
‣ Gradient Colors
‣ Styling based on sibling count
‣ More cursors for better usability
‣ Custom Checkboxes and Radio Buttons
http://lea.verou.me/css3-secrets
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16. Play Framework
‣ A full-stack Java Web Framework made by Web
Developers
‣ Compile on-the-fly
‣ Stateless Architecture
‣ Breaks web framework norms
- Uses static methods
- Doesn’t use Servlet API
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17. Matrix Results
18
17.5 17 17 17
15.5 15 15
13.5 14.5 14 14
13.513.5
11.5
9
4.5
0
ails
g
ils
T
din
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ry
2
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y
x
F
Lift
e
Pla
ipe
Fle
JS
rin
GW
est
ck
uts
Ra
a
Gr
Sp
Str
Va
Wi
Tap
Str
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18. Weighted Results
‣ Grails (90)
‣ Spring MVC (85)
‣ Ruby on Rails (82.5)
‣ Vaadin (82.5)
‣ Play (82.5)
‣ GWT (80)
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19. Mailing List Traffic
Wicket 1841
GWT 1753
Grails 1635
Rails 1604
Tapestry 1538
Play 1451
0 475 950 1425 1900
July 2011
* Spring MVC and Vaadin use Forums, which don’t provide this data.
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22. Scala
“Scala is like the dragon in Avatar. It will try to kill
you, but if you master it, you can fly great distances
with it and have a wonderful time.”
-- Venkat Subramaniam
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23. Scala Basics
‣ def starts a method
‣ variables are started with var or val
‣ variables are defined with name:type
‣ semicolons are not required
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26. Learning Scala
‣ Venkat’s Scala for the Intrigued
- PragPub Magazine, starting in Sep 2011
‣ Scala for the Impatient - Cay Horstmann
‣ Programming in Scala, 2nd Edition - Martin
Odersky, Lex Spoon, and Bill Venners
‣ Twitter’s Scala School
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29. Jade
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41. Cannot start in PROD mode with errors
Template compilation error (In /app/views/Application/index.jade around line 2)
The template /app/views/Application/index.jade does not compile : #{user.name} is not closed.
play.exceptions.TemplateCompilationException: #{user.name} is not closed.
at play.templates.TemplateCompiler.generate(TemplateCompiler.java:102)
at play.templates.TemplateCompiler.compile(TemplateCompiler.java:15)
at play.templates.GroovyTemplateCompiler.compile(GroovyTemplateCompiler.java:4 1)
© 2012 Raible Designs
42. Integrating Scalate with Play
http://raibledesigns.com/rd/entry/integrating_scalate_and_jade_with
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46. Play 2.0 Beta
http://raibledesigns.com/rd/entry/play_2_0_a_web
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49. CoffeeScript with Play
http://raibledesigns.com/rd/entry/trying_to_make_coffeescript_work
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52. H5BP and Play
cd $boilerplate-download
cp 404.html ~/dev/play-more/app/views/errors/404.html
cp *.png ~/dev/play-more/public/.
cp crossdomain.xml ~/dev/play-more/public/.
cp -r css ~/dev/play-more/public/stylesheets/.
cp favicon.ico ~/dev/play-more/public/.
cp humans.txt ~/dev/play-more/public/.
cp -r js/libs ~/dev/play-more/public/javascripts/.
cp robots.txt ~/dev/play-more/public/.
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54. HTML5 Boilerplate
http://raibledesigns.com/rd/entry/integrating_html5_boilerplate_with_scalate
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64. Testing
‣ Tried Trip Meter on a bike ride
‣ Said I’d traveled 5 km, when I knew I’d gone 10
- Was calculating start to end w/o waypoints
‣ To Visualize: integrated odometer with maps
using Google Maps Polylines
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65. Discovered
‣ HTML5 Geolocation was highly inaccurate
- Fixed by passing {enableHighAccuracy: true} to
navigator.geolocation.watchPosition()
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67. Show Stopper?
‣ Geolocation doesn’t run in the background
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71. LESS
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72. LESS
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74. HTML5 Features
‣ Geolocation
‣ CSS 3
‣ Audio
‣ History
‣ Local Storage
‣ Canvas
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75. HTML5 and Bootstrap
http://raibledesigns.com/rd/entry/developing_with_html5_coffeescript_and
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76. Anorm and PostgreSQL
‣ I’m a big fan of ORMs like Hibernate and JPA
- Learn a new JDBC abstraction? Really!?
‣ Anorm is and will be the default for Play Scala
‣ Chose PostgreSQL since that’s what Heroku uses
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82. Anorm, Dates & PostgreSQL
‣ Discovered “support of Date for insertion” was
added to Anorm in August 2011
‣ Cloned play-scala, built locally and uploaded
‣ Modified dependencies.yml to use new version
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83. Anorm and PostgreSQL
http://raibledesigns.com/rd/entry/play_scala_s_anorm_heroku
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87. Scalate as a Play Module
http://raibledesigns.com/rd/entry/more_scalate_goodness_for_play
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88. App was still unusable
‣ I still hadn’t solved the fundamental problem
‣ The app couldn’t run in the background on a
mobile phone
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90. Requirements
‣ Intel-based computer with Mac OS X Snow
Leopard (10.6)
‣ Xcode
‣ PhoneGap
‣ Necessary for Installation:
- An Apple iOS Device
- iOS Developer Certification
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94. PhoneGap Writeup
http://raibledesigns.com/rd/entry/phonegap_to_the_rescue
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95. Was it worth it?
‣ Development Hours: $$$
‣ play-more.com domain: $180
‣ GoPro Helmet Cam: $239
‣ iOS Certified Developer: $100
‣ Free Trip to Devoxx: Priceless
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96. Was it worth it?
‣ Development Hours: $$$
‣ play-more.com domain: $180
‣ GoPro Helmet Cam: $239
‣ iOS Certified Developer: $100
‣ Free Trip to Jfokus: Awesome!
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97. Since Devoxx
‣ Tried to upgrade to Play 2.0
‣ Integrated RESTful Services
‣ Integrated Secure Social for
Authentication
‣ Added ability to save, edit
and delete workouts
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99. Upgrading to Play 2.0
“If it's a critical project, to be finished before
next March 2012, I would go with Play 1.x.”
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104. Secure Social
http://raibledesigns.com/rd/entry/secure_json_services_with_play
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106. Tools
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107. Lessons Learned
‣ Develop Mobile Client first
‣ Develop Web Client as a one-
page app
‣ Don’t rely on the internet for
mobile
‣ Keep static assets local for
faster startup
‣ Bleeding edge can be painful
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109. HTML5 vs. Native
‣ If you need background services like geolocation
or audio, native is necessary
‣ Can still write your apps in HTML5
- Bridge the Gap with PhoneGap or Titanium
‣ If mobile is important, consider fully native with
WebViews for common features - a.k.a. Hybrid
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111. Play More!
‣ Learn Something New
‣ Have Fun
‣ Get out there and Play!
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