Improved caching - Facebook style.

app/controllers/application_controller.rb

@@ -146,25 +146,23 @@ class ApplicationController < ActionController::Base
  
     # show linked topics and items
     user['links'] = []
-    ticket_state_list_open   = Ticket::State.where( :ticket_state_type_id => Ticket::StateType.where(:name => ['new','open', 'pending remidner', 'pending action']) )
-    ticket_state_list_closed = Ticket::State.where( :ticket_state_type_id => Ticket::StateType.where(:name => ['closed'] ) )
 
-    tickets_open   = Ticket.where(:customer_id => user_id, :ticket_state_id => ticket_state_list_open).count()
-    tickets_closed = Ticket.where(:customer_id => user_id, :ticket_state_id => ticket_state_list_closed).count()
+    # TEMP: compat. reasons
+    user[:preferences] = {} if !user[:preferences]
 
     topic = {
       :title => 'Tickets',
       :items => [
         {
           :url   => '',
-          :name  => 'open (' + tickets_open.to_s + ')',
+          :name  => 'open (' + user[:preferences][:tickets_open].to_s + ')',
           :title => 'Open Tickets',
           :class => 'user-tickets',
           :data  => 'open'
         },
         {
           :url   => '',
-          :name  => 'closed (' + tickets_closed.to_s + ')',
+          :name  => 'closed (' + user[:preferences][:tickets_closed].to_s + ')',
           :title => 'Closed Tickets',
           :class => 'user-tickets',
           :data  => 'closed'

app/models/application_model.rb

@@ -0,0 +1,31 @@
+class ApplicationModel < ActiveRecord::Base
+  self.abstract_class = true
+
+  @@cache = {}
+
+  def cache_update(o)
+#    puts 'u ' + self.class.to_s
+    if self.respond_to?('cache_delete') then self.cache_delete end
+#    puts 'g ' + group.class.to_s
+    if o.respond_to?('cache_delete') then o.cache_delete end
+  end
+  def cache_delete
+#    puts 'cache_delete', self.inspect
+#    puts 'cache_delete', self.id
+    @@cache[self.to_s] = {} if !@@cache[self.to_s]
+    @@cache[self.to_s][self.id] = nil
+  end
+  def self.cache_set(data_id, data)
+#    puts 'cache_set', self.inspect
+#    puts 'cache_set', self.to_s
+#    puts 'cache_set', data_id
+    @@cache[self.to_s] = {} if !@@cache[self.to_s]
+    @@cache[self.to_s][data_id] = data
+  end
+  def self.cache_get(data_id)
+#    puts 'cache_get', data_id
+#    puts 'cache_get', self.inspect
+    @@cache[self.to_s] = {} if !@@cache[self.to_s]
+    return @@cache[self.to_s][data_id] if @@cache[self.to_s]
+  end
+end

app/models/authorization.rb

@@ -1,7 +1,7 @@
 class Authorization < ActiveRecord::Base
-  belongs_to :user
-  validates_presence_of :user_id, :uid, :provider
-  validates_uniqueness_of :uid, :scope => :provider
+  belongs_to              :user
+  validates_presence_of   :user_id, :uid, :provider
+  validates_uniqueness_of :uid,     :scope => :provider
   
   def self.find_from_hash(hash)
     auth = Authorization.where( :provider => hash['provider'], :uid => hash['uid'] )
@@ -19,8 +19,11 @@ class Authorization < ActiveRecord::Base
       if hash['info']['image']
         user = User.where( :id => auth.first.user_id ).first
         user.update_attributes(
-          :image    => hash['info']['image']
+          :image => hash['info']['image']
         )
+
+        # reset cache
+        user.cache_delete
       end
     end
 
@@ -44,6 +47,8 @@ class Authorization < ActiveRecord::Base
       :token    => hash['credentials']['token'],
       :secret   => hash['credentials']['secret']
     )
-  end
 
+    # reset cache
+    user.cache_delete
+  end
 end

app/models/ticket.rb

@@ -1,12 +1,16 @@
 class Ticket < ActiveRecord::Base
   before_create :number_generate, :check_defaults
-  belongs_to :group
-  has_many   :articles
-  belongs_to :ticket_state,    :class_name => 'Ticket::State'
-  belongs_to :ticket_priority, :class_name => 'Ticket::Priority'
-  belongs_to :owner,           :class_name => 'User'
-  belongs_to :customer,        :class_name => 'User'
-  belongs_to :created_by,      :class_name => 'User'
+  after_create  :user_ticket_counter_update
+  after_update  :user_ticket_counter_update
+  after_destroy :user_ticket_counter_update
+  
+  belongs_to    :group
+  has_many      :articles
+  belongs_to    :ticket_state,    :class_name => 'Ticket::State'
+  belongs_to    :ticket_priority, :class_name => 'Ticket::Priority'
+  belongs_to    :owner,           :class_name => 'User'
+  belongs_to    :customer,        :class_name => 'User'
+  belongs_to    :created_by,      :class_name => 'User'
 
   @@number_adapter = nil
 
@@ -90,6 +94,21 @@ class Ticket < ActiveRecord::Base
     return subject
   end
 
+  def user_ticket_counter_update
+    return if !self.customer_id
+
+    ticket_state_list_open   = Ticket::State.where( :ticket_state_type_id => Ticket::StateType.where(:name => ['new','open', 'pending remidner', 'pending action']) )
+    ticket_state_list_closed = Ticket::State.where( :ticket_state_type_id => Ticket::StateType.where(:name => ['closed'] ) )
+
+    tickets_open   = Ticket.where( :customer_id => self.customer_id, :ticket_state_id => ticket_state_list_open ).count()
+    tickets_closed = Ticket.where( :customer_id => self.customer_id, :ticket_state_id => ticket_state_list_closed ).count()
+
+    customer = User.find( self.customer_id )
+    customer[:preferences][:tickets_open]   = tickets_open
+    customer[:preferences][:tickets_closed] = tickets_closed
+    customer.save
+  end
+
   private
     def number_generate
       Ticket.new.number_adapter = Setting.get('ticket_number')

app/models/user.rb

@@ -1,15 +1,16 @@
-class User < ActiveRecord::Base
+class User < ApplicationModel
   before_create           :check_name, :check_email, :check_image
-  has_and_belongs_to_many :groups
-  has_and_belongs_to_many :roles
-  has_and_belongs_to_many :organizations
-  belongs_to              :organization,  :class_name => 'Organization'
-  has_many                :authorizations
-  after_create            :delete_cache
-  after_update            :delete_cache
-  after_destroy           :delete_cache
+  after_create            :cache_delete
+  after_update            :cache_delete
+  after_destroy           :cache_delete
 
-  @@cache = {}
+  has_and_belongs_to_many :groups,          :after_add => :cache_update, :after_remove => :cache_update
+  has_and_belongs_to_many :roles,           :after_add => :cache_update, :after_remove => :cache_update
+  has_and_belongs_to_many :organizations,   :after_add => :cache_update, :after_remove => :cache_update
+  has_many                :authorizations,  :after_add => :cache_update, :after_remove => :cache_update
+  belongs_to              :organization,    :class_name => 'Organization'
+
+  store                   :preferences
 
   def self.authenticate( username, password )
     user = User.where( :login => username, :active => true ).first
@@ -54,7 +55,7 @@ class User < ActiveRecord::Base
   
   def self.find_fulldata(user_id)
 
-    return @@cache[user_id] if @@cache[user_id]
+    return cache_get(user_id) if cache_get(user_id)
 
     # get user
     user = User.find(user_id)
@@ -93,21 +94,12 @@ class User < ActiveRecord::Base
     }
     data['organizations'] = organizations
 
-    @@cache[user_id] = data
+    cache_set(user.id, data)
 
     return data
   end
 
-  def cache_reset
-    @@cache[self.id] = nil
-  end
-      
   private
-    def delete_cache
-      puts 'delete_cache', self.insepct
-      @@cache[self.id] = nil
-    end
-
     def check_name
       if self.firstname && (!self.lastname || self.lastname == '') then
         name = self.firstname.split(' ', 2)

db/migrate/20120101000001_create_base.rb

@@ -29,6 +29,7 @@ class CreateBase < ActiveRecord::Migration
       t.column :active,         :boolean,               :null => false, :default => true
       t.column :note,           :string, :limit => 250, :null => true
       t.column :source,         :string, :limit => 200, :null => true
+      t.column :preferences,    :string, :limit => 4000,:null => true
       t.column :created_by_id,  :integer,               :null => false
       t.timestamps
     end