Manisha JoshiYour presentation is good, but you must use some other color, instead of blue one.6 months ago
Are you sure you want to
Vijay Bhaskar at cinemaNeed : 'Ruby on Rail Developer' at NJ Position : Ruby on Rail Developer
Location : NJ
Duration : 6+ Months
Client is looking for “Ruby on Rail Developer” Experience with Ruby on Rail Developer, Heroku or Engine Factory, ect;
Client is Looking more of an architect on such development methodology but he/she has to know how to code too. Any experience on Heroku or Engine Factory would be a plus. Kindly send your resume along with the following information……………………….Please,
FULL NAME:
Best contact number:
Current Location:
Visa Status (US Citizen/GC):
Availability (specify the notice period, if so required):
Expected Hourly / PERANNUM Rate (on W2 Please specify):
Ready to relocate to NJ, if hired for this position (Yes/No):
Ready to Face to Face Interview (Yes/No):
Vijay Bhaskar
Globalnest LLC
281 state Route 79, Suite 208
Morganville, NJ 07751
Voice: (732)-333-4808
Fax: (732) 333-5946
Email: bhaskar@globalnest.com2 years ago
Are you sure you want to
John Granule, Web Developer at HomeImpressive presentation of 'Ruby on Rails'. You've shown your credibility on presentation with this slideshow. This one deserves thumbs up. I'm John, owner of www.freeringtones.ws/ . Hope to see more quality slides from you.
Best wishes.2 years ago
Are you sure you want to
Anisa Sliney Mark, Self Employed at Unihey there,could you please mail this across to me,it will truly assist me for my function.thank you really much. Anisa http://financejedi.com http://healthjedi.com2 years ago
Ruby on Rails By Miguel Vega [email_address] http://www.upstrat.com/ and Ezwan Aizat bin Abdullah Faiz [email_address] http://rails.aizatto.com/ http://creativecommons.org/licenses/by/3.0/
Who Am I?
Miguel Vega
1 ½ years doing Ruby and Rails
PHP before then
Started a company (upstrat) just to have an excuse to use rails.
Who Am I?
Multiple Names
Ezwan Aizat Bin Abdullah Faiz
Aizat Faiz
aizatto
That scrubby looking guy on the screen
Student
Free and Open Source (FOSS) Enthusiast
Local FOSS Champion
http://foss.org.my
Web Developer
Ruby on Rails
LAMP
What is
Ruby on Rails?
Built on
Ruby Programming Language
Web Application Framework
+ =
Wait!
Unexpected
Side Effect!
YOU =
Why Ruby?
A great man once said
Often people, especially computer engineers, focus on the machines .
They think,
“By doing this, the machine will run faster .
By doing this, the machine will run more effectively .
By doing this, the machine will something something something ”
They are focusing on machines . But in fact we need to focus on humans , on how humans care about doing programming or operating the application of the machines. We are the masters . They are the slaves .
By doing this,
the machine will something something something
We are the masters ,
they are the slaves
Yukihiro Matsumoto
Creator of Ruby
They are the SLAVES!
and I think we keep forgetting that
Ruby brings...
Large Increase in Productivity
How?
Non traditional programming style
Everything is an Object string = String .new 5 .times do puts " Hello World " end # Hello World # Hello World # Hello World # Hello World # Hello World
Everything is an Object 1 .upto( 100 ) { | i | puts i } # 1 # 2 # 3 # ... # 100 3.141_592_65 .ceil # 4 2.71828182845905 .floor # 2
Blocks (aka Closures) patients.each do | patient | if patient.ill? physician.examine patient else patient.jump_for_joy! end end
Blocks (aka Closures) hello = Proc .new do | string | puts " Hello #{string.upcase}" end hello.call ' Aizat ' # Hello AIZAT hello.call ' World ' # Hello WORLD
Open Classes class String def sanitize self .gsub( / [^a-z1-9]+ /i , ' _ ' ) end end puts " Ruby gives you alot of $$$ yo! " .sanitize # Ruby_gives_you_alot_of_yo_
Open Classes class Array def rand self [ Kernel ::rand(size)] end end puts %w[ a b c d e f g ] .rand # "e"
Open Classes class Array def shuffle size.downto( 1 ) { | n | push delete_at( Kernel ::rand(n)) } self end end puts %w[ a b c d e f g ] .shuffle.inspect # ["c", "e", "f", "g", "b", "d", "a"]
Open Classes class Numeric def seconds self end def minutes self .seconds * 60 end def hours self .minutes * 60 end def days self .hours * 24 end def weeks self .days * 7 end alias second seconds alias minute minutes alias hour hours alias day days alias week weeks end
Open Classes 1 .second # 1 1 .minute # 60 7.5 .minutes # 450.0 3 .hours # 10800 10.75 hours # 38700 24 .hours # 86400 31 .days # 2678400 51 .weeks # 30844800 365 .days # 31536000 Time .now # Thu May 10 12:10:00 0800 2007 Time .now - 5 .hours # Thu May 10 07:10:00 0800 2007 Time .now - 3 .days # Mon May 07 12:10:00 0800 2007 Time .now - 1 .week # Thu May 03 12:10:00 0800 2007
This is how Rails does its magic
and more...
What is Rails?
Convention over Configuration
MVC
Model View Controller
M VC
Model View Controller
ActiveRecord
Object Relation Mapping (ORM)
Class to Table, Object to Row
CRUD simple
Database Agnostic
ActiveRecord
ActiveRecord::Base#find class Patient < ActiveRecord :: Base end Patient .find( 1 ) # SELECT * FROM patients WHERE id = 1 Patient .find_by_name ' Miguel Vega ' # SELECT * FROM patients WHERE name = 'Miguel Vega' Patient .find_by_date_of_birth ' 1986-07-24 ' # SELECT * FROM patients WHERE date_of_birth = '1986-07-24' Patient .find_by_name_and_date_of_birth ' Miguel Vega ' , ' 1986-07-24 ' # SELECT * FROM patients WHERE name = 'Miguel Vega' AND date_of_birth = '1986-07-24'
ActiveRecord::Base#find Patient .count # SELECT COUNT(*) AS count Patient .find :all , :order => ' name DESC ' # SELECT * FROM patients ORDER BY name DESC Patient .find :all , :conditions => [ " name LIKE ? " , " The other guy " ] # SELECT * FROM patients WHERE name = 'The other guy'
Models class Patient < ActiveRecord :: Base end class Encounter < ActiveRecord :: Base end class Physican < ActiveRecord :: Base end
Associations class Patient < ActiveRecord :: Base has_many :encounters has_many :physicans , :through => :encounters end class Encounter < ActiveRecord :: Base belongs_to :patient belongs_to :physician end class Physican < ActiveRecord :: Base has_many :encounters has_many :patients , :through => :encounters end
Or what people like to call Convention over Configuration
Associations p = Patient .find :first # SELECT * FROM patients LIMIT 1 p.encounters.count # SELECT COUNT(*) AS count FROM encounters WHERE (patient_id = 1) p.encounters.find :condition => [ ' date <= ? ' Time .now - 12 .weeks] # SELECT * FROM encounters WHERE date <= '2007-02-13 16:19:29' AND (patient_id = 1)
Validations class Patient < ActiveRecord :: Base has_many :encounters has_many :physicans , :through => :encounters validates_presence_of :name validates_inclusion_of :gender , :in => [ ' male ' , ' female ' ] validates_email_of :email validates_numericality_of :age validates_confirmation_of :password end
MV C
Model View Controller
ActionController
Separation of business logic and presentation
Ideally there should be no logic in the view
ActionController class PatientController < ApplicationController def index @patient = Patient .find :first @title = ' Patient Detail ' @homepage_title = " Patient: #{@patient.name}" end end
M V C
Model View Controller
View < html > < head > < title > <%= @title %> </ title > </ head > < body > < h1 > <%= @homepage_title %> </ h1 > < b > Patient: </ b > < dl > < dt > Name </ dt > < dd > <%= @patient .name %> </ dd > </ dl > <%= render :partial => ' patient_details ' %> </ body > </ html >
Why Rails?
Convention over Configuration
Easy SQL
ActiveRecord::Base#find
Easy SQL
Even through associations
RAD/RID
Rapid Application Development
Rapid Iterative Development
Testing Framework
Built in Unit, Function, Integration testing
Awesome Plugin Structure
Simpler and Nicer looking Code
Web 2.0 Ready
Tagging, Folksonomy, Ajax, REST
Simply RESTful
DRY
Don't Repeat Yourself
DRY
Don't Repeat Yourself
DRY
Saves time
Easier to manage
Reusable Code
Best of all...
You don't look like a
code monkey
Most Importantly
Because it's
FUN
Questions?
Thank you
amcvega@gmail.com - aizat.faiz@gmail.com
Images used are from Tango Desktop Project http://tango.freedesktop.org/
Position : Ruby on Rail Developer
Location : NJ
Duration : 6+ Months
Client is looking for “Ruby on Rail Developer” Experience with Ruby on Rail Developer, Heroku or Engine Factory, ect;
Client is Looking more of an architect on such development methodology but he/she has to know how to code too.
Any experience on Heroku or Engine Factory would be a plus.
Kindly send your resume along with the following information……………………….Please,
FULL NAME:
Best contact number:
Current Location:
Visa Status (US Citizen/GC):
Availability (specify the notice period, if so required):
Expected Hourly / PERANNUM Rate (on W2 Please specify):
Ready to relocate to NJ, if hired for this position (Yes/No):
Ready to Face to Face Interview (Yes/No):
Vijay Bhaskar
Globalnest LLC
281 state Route 79, Suite 208
Morganville, NJ 07751
Voice: (732)-333-4808
Fax: (732) 333-5946
Email: bhaskar@globalnest.com 2 years ago
Best wishes. 2 years ago