fast prototyping with sinatra sequel w2tags, when you need to prototype sometime it need framework that works simple complete and less typing, w2tags use HAML like syntax to speed up the prototyping

1. SINATRA
SEQUEL
W2TAGS

2. Work: SKYEIGHT (S8)
➢
At-Work: monorails/NET 2.0
➢
Outside-Work: ruby/javascript
➢

4. Sinatra
don't do
Magic

5. Sinatra
basic Concept
Throw URL
DO Some Stuff

6. require 'rubygems'
require 'sinatra'
get '/' do 'Hello World' end
Throw URL
DO Some Stuff

7. require 'rubygems'
require 'sinatra'
get '/' do 'Hello World' end
DO Some Stuff
Throw
Controller
URL
Return string

8. require 'rubygems'
require 'sinatra'
get '/' do
@data = 'Hello World'
erb :index index.erb
end <%= @data %>
View
URL Controller
Return string

9. Simply
Sinatra
Sequel

10. require 'rubygems'
require 'sequel'
require 'sinatra'
DB = Sequel.connect(....)
class Entry < Sequel::Model
end
get '/' do
@recs = Entry.all
erb :index index.erb
end
<h1>Entry List</h1>
<% @recs.each do |r| %>
<%= r.title %>
<br/>
<% end %>

11. require 'rubygems'
require 'sequel'
require 'sinatra'
DB = Sequel.connect(....)
Model
class Entry < Sequel::Model
end
get '/' do
@recs = Entry.all
erb :index index.erb
end
<h1>Entry List</h1>
<% @recs.each do |r| %>
<%= r.title %>
<br/>
<% end %>

12. require 'rubygems'
require 'sequel'
require 'sinatra'
DB = Sequel.connect(....)
Model
class Entry < Sequel::Model
end
get '/' do
View
@recs = Entry.all
erb :index index.erb
end
<h1>Entry List</h1>
<% @recs.each do |r| %>
<%= r.title %>
<br/>
<% end %>

13. require 'rubygems'
require 'sequel'
require 'sinatra'
DB = Sequel.connect(....)
Model
class Entry < Sequel::Model
end
get '/' do
View
@recs = Entry.all
erb :index index.erb
end
<h1>Entry List</h1>
<% @recs.each do |r| %>
Controller <%= r.title %>
<br/>
<% end %>

14. require 'rubygems'
require 'sequel'
require 'sinatra'
DB = Sequel.connect(....)
Model
class Entry < Sequel::Model
end
get '/' do
View
@recs = Entry.all
erb :index index.erb
end
<h1>Entry List</h1>
R <% @recs.each do |r| %>
Controller <%= r.title %>
ou <br/>
te <% end %>

15. MVC - R
require 'rubygems'
require 'sequel'
require 'sinatra' Some Stuff
DB = Sequel.connect(....)
Model
class Entry < Sequel::Model
end
get '/' do
View
@recs = Entry.all
erb :index index.erb
end
<h1>Entry List</h1>
R <% @recs.each do |r| %>
Controller <%= r.title %>
ou <br/>
te <% end %>

16. Simply
Sinatra
Sequel
W2Tags

17. require 'rubygems'
require 'sequel'
require 'sinatra' index.w2erb
require 'w2tags'
%h1 Entry List
require 'w2tags/sinatra_hook'
Auto Generate
Auto Generate
-each @recs;r
= r.title
DB = Sequel.connect(....)
%br/
class Entry < Sequel::Model
end
index.erb
get '/' do
@recs = Entry.all <h1>Entry List</h1>
erb :index <% @recs.each do |r| %>
end <%= r.title %>
<br/>
<% end %>

18. W2Tags
index.w2erb index.erb
%h1 Entry List <h1>Entry List</h1>
<% @recs.each do |r| %>
-each @recs;r
<%= r.title %>
= r.title
<br/>
%br/
<% end %>
See the flow
clearly

19. Sinatra
crud
Entry
Action Method 1 Method 2
List get '/entries'
New get '/entries/new' post '/entries/new'
Edit get '/entries/:id' put '/entries/:id'
Delete delete '/entries/:id'

20. Sinatra get '/entries' do
1
erb :entries_index
crud get '/entries/new' do
2
erb :entries_new
Entry post '/entries/new' do
redirect '/entries'
Action Method 1 Method 2 do
get '/entries/:id' 3
List get '/entries' erb :entries_edit
New get '/entries/new'put '/entries/:id' do
post '/entries/new'
redirect '/entries'
Edit get '/entries/:id' delete '/entries/:id' do
put '/entries/:id'
Delete delete '/entries'
redirect '/entries/:id'

21. Sinatra crud
Display Action

22. Sinatra
Simply
Magic

26. 1 2 3
W2Tags
Simply
Magic

27. Auto Generate
1

28. Auto Generate
1

29. Auto Generate
2

30. Auto Generate
3

31. Resources
Sinatra : http:/github.com/bmizerany/sinatra
Sequel : http:/github.com/jeremyevans/sequel
W2Tags : http:/github.com/wharsojo/w2tags
Demo : http:/github.com/wharsojo/demo_sinatra
Thank you!
slideshare.com/wharsojo...

32. rack
Ec = New EventContex
Ec.request = New Rack::Request
●
Ec.response = New Rack::Response
●
Array of
code-block
before Sinatra.application.filters all will be
When error do
Sinatra.application.error execute
or select .errors
Lookup Event
Sinatra.application.events
(post,delete,put,get,head) or
do/raise error not_found Array of
code-block
Code-block/render Execute first match
inside instance object of will be
Render EventContext execute
W2Tags/Erb
●
Haml, Sass
●
Builder wh/id-ruby
●

33. erb.hot

34. sinatra_table.hot
5
11
1 6
2
3
1 11
1
8
2
4 7
5
9
4
3 12
6 12
7
8
9 10
10

35. sinatra_form2.hot

36. Sequel – DB Toolkit
DB[:tabel] #Dataset chainable method, return:Dataset
where, filter, exclude, order, reverse_order, uniq, limit,
paginate, join, inner_join, left_outer_join,
DB[:tabel]...all #records (Array of record)
DB[:tabel]...first #record (Hash of field_name / value)
DB[:tabel]...order(:field).last #record
DB[:tabel]...map :field #Array of value
DB[:tabel]...[Integer / Hash]
Integer=> ...limit(Integer).all
Hash => ...where(Hash ).first
DB[:tabel]...[ 2] #eq DB[:tabel].limit( 2).all
DB[:tabel]...[:id=>2] #eq DB[:tabel].where(:id=>2).first
#Summarizing: result Number
...count, max, min, avg, sum
#Manipulation
DB[:tabel]...delete, ...update, insert, <<