Class: Facebooker::Rails::Publisher

Inherits:
Object
  • Object
show all
Defined in:
lib/facebooker/rails/publisher.rb

Overview

ActionMailer like module for publishing Facbook messages

To use, create a subclass and define methods Each method should start by calling send_as to specify the type of message Valid options are :email and :notification, :user_action, :profile, :ref

Below is an example of each type

class TestPublisher < Facebooker::Rails::Publisher
  # The new message templates are supported as well
  # First, create a method that contains your templates:
  # You may include multiple one line story templates and short story templates
  # but only one full story template
  #  Your most specific template should be first
  #
  # Before using, you must register your template by calling register. For this example
  #  You would call TestPublisher.register_publish_action
  #  Registering the template will store the template id returned from Facebook in the 
  # facebook_templates table that is created when you create your first publisher
  def publish_action_template
    one_line_story_template "{*actor*} did stuff with {*friend*}"
    one_line_story_template "{*actor*} did stuff"
    short_story_template "{*actor*} has a title {*friend*}", render(:partial=>"short_body")
    short_story_template "{*actor*} has a title", render(:partial=>"short_body")
    full_story_template "{*actor*} has a title {*friend*}", render(:partial=>"full_body")    
    action_links action_link("My text {*template_var*}","{*link_url*}")
  end

  # To send a registered template, you need to create a method to set the data
  # The publisher will look up the template id from the facebook_templates table
  def publish_action(f)
    send_as :user_action
    from f
    story_size SHORT # or ONE_LINE or FULL
    data :friend=>"Mike"
  end

  # Provide a from user to send a general notification
  # if from is nil, this will send an announcement
  def notification(to,f)
    send_as :notification
    recipients to
    from f
    fbml "Not"
  end

  def email(to,f)
    send_as :email
    recipients to
    from f
    title "Email"
    fbml 'text'
    text fbml
  end
  # This will render the profile in /users/profile.erb
  #   it will set @user to user_to_update in the template
  #  The mobile profile will be rendered from the app/views/test_publisher/_mobile.erb
  #   template
  def profile_update(user_to_update,user_with_session_to_use)
    send_as :profile
    from user_with_session_to_use
    to user_to_update
    profile render(:action=>"/users/profile",:assigns=>{:user=>user_to_update})
    profile_action "A string"
    mobile_profile render(:partial=>"mobile",:assigns=>{:user=>user_to_update})
end

  #  Update the given handle ref with the content from a
  #   template
  def ref_update(user)
    send_as :ref
    from user
    fbml render(:action=>"/users/profile",:assigns=>{:user=>user_to_update})
    handle "a_ref_handle"
end

To send a message, use ActionMailer like semantics

TestPublisher.deliver_action(@user)

For testing, you may want to create an instance of the underlying message without sending it

TestPublisher.create_action(@user)

will create and return an instance of Facebooker::Feeds::Action

Publisher makes many helpers available, including the linking and asset helpers

Defined Under Namespace

Classes: Email, FacebookTemplate, ImageHolder, InvalidSender, Notification, Profile, PublisherController, Ref, UnknownBodyType, UnspecifiedBodyType, UserAction

Constant Summary collapse

ONE_LINE =

story sizes from the Facebooker API

1
SHORT = 
2
FULL = 
4

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Publisher

Returns a new instance of Publisher.



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# File 'lib/facebooker/rails/publisher.rb', line 97

def initialize
  @controller = PublisherController.new        
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name, *args) ⇒ Object 



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# File 'lib/facebooker/rails/publisher.rb', line 306

def method_missing(name,*args)
  if args.size==1 and self._body.respond_to?("#{name}=")
    self._body.send("#{name}=",*args)
  elsif self._body.respond_to?(name)
    self._body.send(name,*args)
  else
    super
  end
end

Instance Attribute Details

#_body ⇒ Object

Returns the value of attribute _body.



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# File 'lib/facebooker/rails/publisher.rb', line 238

def _body
  @_body
end

#action_links(*links) ⇒ Object

Returns the value of attribute action_links.



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# File 'lib/facebooker/rails/publisher.rb', line 191

def action_links
  @action_links
end

#one_line_story_templates ⇒ Object

Returns the value of attribute one_line_story_templates.



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# File 'lib/facebooker/rails/publisher.rb', line 191

def one_line_story_templates
  @one_line_story_templates
end

#short_story_templates ⇒ Object

Returns the value of attribute short_story_templates.



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# File 'lib/facebooker/rails/publisher.rb', line 191

def short_story_templates
  @short_story_templates
end

Class Method Details

.add_template_helper(helper_module) ⇒ Object

:nodoc:



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# File 'lib/facebooker/rails/publisher.rb', line 503

def add_template_helper(helper_module) #:nodoc:
  master_helper_module.send :include,helper_module
  include master_helper_module
end

.controller_path ⇒ Object 



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# File 'lib/facebooker/rails/publisher.rb', line 488

def controller_path
  self.to_s.underscore
end

.default_url_options ⇒ Object 



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# File 'lib/facebooker/rails/publisher.rb', line 484

def default_url_options
  {:host => Facebooker.canvas_server_base + Facebooker.facebook_path_prefix}
end

.helper(*args) ⇒ Object 



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# File 'lib/facebooker/rails/publisher.rb', line 492

def helper(*args)
  args.each do |arg|
    case arg
    when Symbol,String
      add_template_helper("#{arg.to_s.classify}Helper".constantize)              
    when Module
      add_template_helper(arg)
    end
  end
end

.inherited(child) ⇒ Object 



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# File 'lib/facebooker/rails/publisher.rb', line 509

def inherited(child)
  super          
  child.master_helper_module=Module.new
  child.master_helper_module.__send__(:include,self.master_helper_module)
  child.send(:include, child.master_helper_module)
  FacebookTemplate.clear_cache!
end

.method_missing(name, *args) ⇒ Object 



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# File 'lib/facebooker/rails/publisher.rb', line 459

def method_missing(name,*args)
  should_send = false
  method = ''
  if md = /^create_(.*)$/.match(name.to_s)
    method = md[1]
  elsif md = /^deliver_(.*)$/.match(name.to_s)
    method = md[1]
    should_send = true            
  elsif md = /^register_(.*)$/.match(name.to_s)
    return FacebookTemplate.register(self, md[1])
  else
    super
  end
      
  #now create the item
  (publisher=new).send(method,*args)
  case publisher._body
  when UserAction
    publisher._body.template_name = method
    publisher._body.template_id ||= FacebookTemplate.bundle_id_for_class_and_method(self,method)
  end
  
  should_send ? publisher.send_message(method) : publisher._body
end

.register_all_templates ⇒ Object 



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# File 'lib/facebooker/rails/publisher.rb', line 450

def register_all_templates
  all_templates = instance_methods.grep(/_template$/) - %w(short_story_template full_story_template one_line_story_template) 
  all_templates.each do |template|
    template_name=template.sub(/_template$/,"")
    puts "Registering #{template_name}"
    send("register_"+template_name)
  end
end

Instance Method Details



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# File 'lib/facebooker/rails/publisher.rb', line 333

def action_link(text,target)
  {:text=>text, :href=>target}
end

#announcement_notification?(from, body) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/facebooker/rails/publisher.rb', line 349

def announcement_notification?(from,body)
  from.nil? and body.is_a?(Notification)
end

#from(*args) ⇒ Object 



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# File 'lib/facebooker/rails/publisher.rb', line 248

def from(*args)
  if args.size==0
    @from
  else
    @from=args.first
  end        
end

#full_story_template(title = nil, body = nil, params = {}) ⇒ Object 



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# File 'lib/facebooker/rails/publisher.rb', line 280

def full_story_template(title=nil,body=nil,params={})
  if title.nil?
    @full_story_template
  else
    @full_story_template=params.merge(:template_title=>title, :template_body=>body)
  end
end

#image(src, target) ⇒ Object 



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# File 'lib/facebooker/rails/publisher.rb', line 329

def image(src,target)
  ImageHolder.new(image_path(src),target.respond_to?(:to_str) ? target : url_for(target))
end

#initialize_template_class(assigns) ⇒ Object 



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# File 'lib/facebooker/rails/publisher.rb', line 402

def initialize_template_class(assigns)
  template_root = "#{RAILS_ROOT}/app/views"
 controller_root = File.join(template_root,self.class.controller_path)
  #only do this on Rails 2.1
 if ActionController::Base.respond_to?(:append_view_path)
   # only add the view path once
   unless ActionController::Base.view_paths.include?(controller_root)
     ActionController::Base.append_view_path(controller_root) 
     ActionController::Base.append_view_path(controller_root+"/..") 
   end
 end
  returning ActionView::Base.new([template_root,controller_root], assigns, self) do |template|
    template.controller=self
    template.extend(self.class.master_helper_module)
    def template.request_comes_from_facebook?
      true
    end
  end
end

#logger ⇒ Object

nodoc needed for actionview



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# File 'lib/facebooker/rails/publisher.rb', line 389

def logger
  RAILS_DEFAULT_LOGGER
end

#one_line_story_template(str) ⇒ Object 



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# File 'lib/facebooker/rails/publisher.rb', line 288

def one_line_story_template(str)
  @one_line_story_templates ||= []
  @one_line_story_templates << str
end

#profile_update?(body) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/facebooker/rails/publisher.rb', line 341

def profile_update?(body)
  body.is_a?(Profile)
end

#recipients(*args) ⇒ Object 



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# File 'lib/facebooker/rails/publisher.rb', line 240

def recipients(*args)
  if args.size==0
    @recipients
  else
    @recipients=args.first
  end
end

#ref_update?(body) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/facebooker/rails/publisher.rb', line 345

def ref_update?(body)
  body.is_a?(Ref)
end

#render(opts) ⇒ Object

nodoc delegate to action view. Set up assigns and render



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# File 'lib/facebooker/rails/publisher.rb', line 395

def render(opts)
  opts = opts.dup
  body = opts.delete(:assigns) || {}
  initialize_template_class(body.dup.merge(:controller=>self)).render(opts)
end

#request_comes_from_facebook? ⇒ Boolean

use facebook options everywhere

Returns:

  • (Boolean) 


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# File 'lib/facebooker/rails/publisher.rb', line 102

def request_comes_from_facebook?
  true
end

#requires_from_user?(from, body) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/facebooker/rails/publisher.rb', line 337

def requires_from_user?(from,body)
  ! (announcement_notification?(from,body) or ref_update?(body) or profile_update?(body))
end

#send_as(option) ⇒ Object 



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# File 'lib/facebooker/rails/publisher.rb', line 257

def send_as(option)
  self._body=case option
  when :action
    Facebooker::Feed::Action.new
  when :story
    Facebooker::Feed::Story.new
  when :templatized_action
    Facebooker::Feed::TemplatizedAction.new
  when :notification
    Notification.new
  when :email
    Email.new
  when :profile
    Profile.new
  when :ref
    Ref.new
  when :user_action
    UserAction.new
  else
    raise UnknownBodyType.new("Unknown type to publish")
  end
end

#send_message(method) ⇒ Object

Raises:



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# File 'lib/facebooker/rails/publisher.rb', line 353

def send_message(method)
  @recipients = @recipients.is_a?(Array) ? @recipients : [@recipients]
  if from.nil? and @recipients.size==1 and requires_from_user?(from,_body)
    @from = @recipients.first
  end
  # notifications can 
  # omit the from address
  raise InvalidSender.new("Sender must be a Facebooker::User") unless from.is_a?(Facebooker::User) || !requires_from_user?(from,_body)
  case _body
  when Facebooker::Feed::TemplatizedAction,Facebooker::Feed::Action
    from.publish_action(_body)
  when Facebooker::Feed::Story
    @recipients.each {|r| r.publish_story(_body)}
  when Notification
    (from.nil? ? Facebooker::Session.create : from.session).send_notification(@recipients,_body.fbml)
  when Email
    from.session.send_email(@recipients, 
                                       _body.title, 
                                       _body.text, 
                                       _body.fbml)
  when Profile
   # If recipient and from aren't the same person, create a new user object using the
   # userid from recipient and the session from from
   @from = Facebooker::User.new(Facebooker::User.cast_to_facebook_id(@recipients.first),Facebooker::Session.create) 
   @from.set_profile_fbml(_body.profile, _body.mobile_profile, _body.profile_action, _body.profile_main)
  when Ref
    Facebooker::Session.create.server_cache.set_ref_handle(_body.handle,_body.fbml)
  when UserAction
    @from.session.publish_user_action(_body.template_id,_body.data_hash,_body.target_ids,_body.body_general)
  else
    raise UnspecifiedBodyType.new("You must specify a valid send_as")
  end
end

#short_story_template(title, body, params = {}) ⇒ Object 



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# File 'lib/facebooker/rails/publisher.rb', line 293

def short_story_template(title,body,params={})
  @short_story_templates ||= []
  @short_story_templates << params.merge(:template_title=>title, :template_body=>body)
end