Download - Integrating Flex and Rails with RubyAMF
Flex and Rails with RubyAMF
Tony HillersonSoftware ArchitectEffectiveUIRailsConf
Code and Slides:http://github.com/thillerson/preso_code/
Sample du Jour: Stuff
Why Flex and Rails?
They Make The Great Tag Team!
[SKIP INTRO]
What are the Options?
XML
XML is the Default Option
# POST /contexts# POST /contexts.xmldef create @context = Context.new(params[:context]) respond_to do |format| if @context.save flash[:notice] = 'Context was successfully created.' format.html { redirect_to(@context) } format.xml { render :xml => @context, :status => :created, :location => @context } else format.html { render :action => "new" } format.xml { render :xml => @context.errors, :status => :unprocessable_entity } end endend
JSON
Javascript Object Notation
JSON is in Rails Tooformat.json { render :json => @context.to_json }
http://as3corlib.googlecode.com
var obj:Object = JSON.decode(jsonString)
AMF
Action Message Format
AMF is the Good Stuff
Buck Thinks it’s Great!
RubyAMF
http://rubyamf.orghttp://rubyamf.googlecode.com
Installing RubyAMF$ script/plugin install http://rubyamf.googlecode.com/svn/current/rubyamf
• New File: app/controllers/rubyamf_controller.rb• New File: config/rubyamf_config.rb• config/initializers/mime_types.rb modified: Mime::Type.register "application/x-amf", :amf• config/routes.rb modified: ActionController::Routing::Routes.draw do |map| map.rubyamf_gateway 'rubyamf_gateway', :controller => 'rubyamf', :action => 'gateway' end
Con"guring RubyAMFmodule RubyAMF module Configuration ClassMappings.translate_case = true ClassMappings.assume_types = false ParameterMappings.scaffolding = true ClassMappings.register( :actionscript => 'Task', :ruby => 'Task', :type => 'active_record', #:associations => ["context"], :attributes => ["id", "label", "context_id", "completed_at", "created_at", "updated_at"]) endend
Con"guring RubyAMFClassMappings.translate_case = false
public var created_at:Date;
ClassMappings.translate_case = true
public var createdAt:Date; // created_at in rails
Con"guring RubyAMFClassMappings.assume_types = true
class Context < ActiveRecord::Base
[RemoteClass(alias="Context")]public class Context {
matches
for free
Con"guring RubyAMFClassMappings.assume_types = false
class Context < ActiveRecord::Base
[RemoteClass(alias="Context")]public class Context {
matches
ClassMappings.register( :actionscript => 'Context', :ruby => 'Context', :type => 'active_record', :attributes => ["id", ...])
with registration
Con"guring RubyAMFParameterMappings.scaffolding = false
save(context);def save @context = params[0]becomes
ParameterMappings.scaffolding = true
save( {context:context});
def save @context = params[:context]becomes
Connecting to Rails via RubyAMF
<mx:RemoteObject id="contextsService" destination="rubyamf" endpoint="http://localhost:3000/rubyamf_gateway/" source="ContextsController" showBusyCursor="true"/>public function save(context:Context):void { var call:AsyncToken =
contextsService.save({context:context}); call.addResponder(responder);}
Development Work#ow
1. Generate and Migrate$ script/generate rubyamf_scaffold context label:string
$ rake db:migrate
class CreateContexts < ActiveRecord::Migration def self.up create_table :contexts do |t| t.string :label t.timestamps end end
def self.down drop_table :contexts endend
def load_all @contexts = Context.find :all respond_to do |format| format.amf { render :amf => @contexts } end end def save respond_to do |format| format.amf do if params[:context].save render :amf => params[:context] else render :amf =>
FaultObject.new(params[:context].errors.join("\n")) end end end end
2. Sample Datawork: id: 1 label: Work
home: id: 2 label: Home
anarco_syndicalist_commune_biweekly_meetings: id: 3 label: Anarcho-syndicalist Commune Bi-weekly Meetings
3. Test
class ContextTest < ActiveSupport::TestCase def test_context_without_label_fails non_label_context = Context.new assert !(non_label_context.save) error_messages = non_label_context.errors.on(:label) assert !(error_messages.empty?) end
class Context < ActiveRecord::Base validates_presence_of :label
4. Con"gure
ClassMappings.register( :actionscript => 'Context', :ruby => 'Context', :type => 'active_record', #:associations => ["tasks"], :attributes => ["id", "label", "created_at", "updated_at"])
5. Wire<mx:RemoteObject id="contextsService" destination="rubyamf" endpoint="http://localhost:3000/rubyamf_gateway/" source="ContextsController" showBusyCursor="true"/>
<mx:RemoteObjectid="tasksService"
destination="rubyamf" endpoint="http://localhost:3000/rubyamf_gateway/" source="TasksController" showBusyCursor="true"/>
5. Wirepublic function loadAll():void { var call:AsyncToken = service.load_all(); call.addResponder(responder);}
public function save(context:Context):void { var call:AsyncToken =
service.save({context:context}); call.addResponder(responder);}
public function destroy(context:Context):void { var call:AsyncToken =
service.destroy({id:context.id}); call.addResponder(responder);}
5. Wirepublic function execute(event:CairngormEvent):void { var evt:SaveContextEvent = event as SaveContextEvent; var delegate:ContextsDelegate = new ContextsDelegate(this); delegate.save(evt.context);}
public function result(data:Object):void { var result:ResultEvent = data as ResultEvent; var context:Context = result.result as Context; ...}
X. Rinse and Repeat
The Future
GemPlugin + GemC Extension
GemPlugin
C Extension
An Impassioned Plea
Resources:
http://rubyamf.googlecode.comhttp://groups.google.com/group/rubyamfhttp://github.com/thillerson/rubyamf
Thanks!Tony Hillersonhttp://slideshare.com/thillersonhttp://github.com/thillersonhttp://thillerson.blogspot.comhttp://effectiveui.com
Twitter: thillersonBrightkite: thillerson
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