Dominion Enterprises _H@<k@th0n_

_H@<k@th0n_

Ken Collins
metaskills.net

Monday, September 12, 11

Who Am I Again?

?

Who Am I Again?
@MetaSkills


Who Am I Again?
@MetaSkills

...


Sr. Soft ware Engineer @ Decisiv


JavaScript


Blog @ MetaSkills.net


Freetime @ HomeMarks.com


Advocate @ 757rb.org


HTML5
CSS3


Divitis

<div id="post">
<div id="header">
<span class="pubdate">
<span class="day">27</span>
<span class="month">Dec</span>
<span class="year">2010</span>
</span>
<h1>My New Blog</h1>
</div>
...
<div id="disqus_thread">
...
</div>
</div>


Semantic

<article id="post">
<header>
<time pubdate datetime="2010-12-27T00:00:00-05:00">
<span class="day">27</span>
<span class="month">Dec</span>
<span class="year">2010</span>
</time>
<h1>My New Blog</h1>
</header>
...
<footer id="disqus_thread">
...
</footer>
</article>


Dive Into HTML5

http://diveintohtml5.org/semantics.html#new-elements


CSS3


CSS3
Selectors


CSS3
Selectors
Borders (images, radius, shadows)


CSS3
Selectors
Colors (rgba, hsla, opacity)


CSS3
Selectors
Text (wrap, overlay, shadows)


CSS3
Selectors
Backgrounds (gradients, clip, origin)


CSS3
Selectors
Backgrounds (gradients, clip, origin)
Media Queries & Fonts


Transitions, Transforms, Animations


jQuery
“Mobile”


Encapsulate Your JavaScript

http://metaskills.net/2011/09/06/how-do-you-encapsulate-your-javascript/


Leveraging
API's In Ruby


Data Format (JSON & XML)


Always Use Object Notation


{
"id":8,
"email":"foo@bar.com",
"posts":[
{"id":30, "title":"First Post", "body":"Some text..."},
{"id":73, "title":"Second Post", "body":"More text..."}
]
}


<user>
<id type="integer">8</id>
<email>foo@bar.com</email>
<posts type="array">
<post>
<title>First Post</title>
<body>Some text...</body>
</post>
<post>
<title>Second Post</title>
<body>More text...</body>
</post>
</posts>
</user>


Rails has #to_json and #to_xml
Define #as_json for obj primitive.


Rails has #to_json and #to_xml
Define #as_json for obj primitive.
New objects using #from_json and
#from_xml methods.



json = '{
"id":8,
"email":"foo@bar.com",
"posts":[
{"id":30, "title":"First Post", "body":"Some text..."},
{"id":73, "title":"Second Post", "body":"More text..."}
]
}'

user = User.new.from_json(json)
user.email # => foo@bar.com
user.posts.size # => 2
user.post.first.title # => "First Post"


Representation
State Transfer
(REST)


Representation
State Transfer
(REST)
CREATE READ UPDATE DELETE

DB INSERT SELECT UPDATE DELETE

HTTP POST GET PUT DELETE


Representation
State Transfer
(REST)
GET /users {:controller=>"users", :action=>"index"}
POST /users {:controller=>"users", :action=>"create"}
GET /users/:id {:controller=>"users", :action=>"show"}
PUT /users/:id {:controller=>"users", :action=>"update"}
DELETE /users/:id {:controller=>"users", :action=>"destroy"}


HTTP Clients


HTTP Clients In Ruby


Many choices!


Many choices!
Ruby’s core lib Net::HTTP looks more
like wizardry vs idiomatic Ruby.


Many choices!
Ruby’s core lib Net::HTTP looks more
like wizardry vs idiomatic Ruby.
Research and pick one that works
best for you.



http://ruby-toolbox.com/categories/http_clients.html


Typhoeus
High Speed!
Built On Top Of libcurl
Simple RESTful Request
Parallel Requests
Memoization & Caching

https://github.com/dbalatero/typhoeus


Typhoeus
hydra = Typhoeus::Hydra.new
request = Typhoeus::Request.new("http://localhost/posts/1.json")
request.on_complete do |response|
json = JSON.parse(response.body)
post = Post.new.from_json(json)
# Do crazy callback stuff...
end

hydra.queue request
hydra.run # This is a blocking call that
# returns once all requests are complete.


SOAP


Pragmatic Use Of Builder
xml = Builder::XmlMarkup.new(:indent=>2)
xml.user do
xml.id 8, :type => 'integer'
xml.email "foo@bar.com"
xml.posts :type => 'array' do
xml.post {...}
end
end
xml.target! # =>
# <user>
# <id type="integer">8</id>
# <email>foo@bar.com</email>
# <posts type="array">
# <post>
# ...
# </post>
# </posts>
# </user>

http://builder.rubyforge.org/


If You Embrace SOAP
Savon Handsoap

http://savonrb.com/ https://github.com/unwire/handsoap


Thanks!
Ken Collins
metaskills.net


Dominion Enterprises _H@<k@th0n_

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