diff --git a/plugins/metadata/install.rb b/plugins/metadata/install.rb
new file mode 100644
index 0000000..84357d1
--- /dev/null
+++ b/plugins/metadata/install.rb
@@ -0,0 +1,5 @@
+if ENV['CI']
+  system 'script/noosfero-plugins -q enable products'
+  exit $?.exitstatus
+end
+
diff --git a/plugins/metadata/lib/ext/product.rb b/plugins/metadata/lib/ext/product.rb
deleted file mode 100644
index b2edcb2..0000000
--- a/plugins/metadata/lib/ext/product.rb
+++ /dev/null
@@ -1,34 +0,0 @@
-require_dependency 'product'
-
-class Product
-
-  metadata_spec namespace: :og, tags: {
-    type: proc{ |p, plugin| plugin.context.params[:og_type] || MetadataPlugin.og_types[:product] || :product },
-    url: proc do |p, plugin|
-      url = p.url.merge! profile: p.profile.identifier, og_type: plugin.context.params[:og_type]
-      plugin.og_url_for url
-    end,
-    gr_hascurrencyvalue: proc{ |p, plugin| p.price.to_f },
-    gr_hascurrency: proc{ |p, plugin| p.environment.currency_unit },
-    title: proc{ |p, plugin| "#{p.name} - #{p.profile.name}" if p },
-    description: proc{ |p, plugin| ActionView::Base.full_sanitizer.sanitize p.description },
-
-    image: proc do |p, plugin|
-      img = "#{p.environment.top_url}#{p.image.public_filename}".html_safe if p.image
-      img = "#{p.environment.top_url}#{p.profile.image.public_filename}".html_safe if img.blank? and p.profile.image
-      img ||= MetadataPlugin.config[:open_graph][:environment_logo] rescue nil if img.blank?
-      img
-    end,
-    'image:type' => proc{ |p, plugin| p.image.content_type if p.image },
-    'image:height' => proc{ |p, plugin| p.image.height if p.image },
-    'image:width' => proc{ |p, plugin| p.image.width if p.image },
-
-    see_also: [],
-    site_name: proc{ |p, plugin| plugin.og_url_for p.profile.url },
-    updated_time: proc{ |p, plugin| p.updated_at.iso8601 if p.updated_at },
-
-    'locale:locale' => proc{ |p, plugin| p.environment.default_language },
-    'locale:alternate' => proc{ |p, plugin| p.environment.languages - [p.environment.default_language] if p.environment.languages },
-  }
-
-end
diff --git a/plugins/metadata/lib/ext/products_plugin/product.rb b/plugins/metadata/lib/ext/products_plugin/product.rb
new file mode 100644
index 0000000..0b01abe
--- /dev/null
+++ b/plugins/metadata/lib/ext/products_plugin/product.rb
@@ -0,0 +1,38 @@
+if defined? ProductsPlugin
+  require_dependency 'products_plugin/product'
+
+  module ProductsPlugin
+    class Product
+
+      metadata_spec namespace: :og, tags: {
+        type: proc{ |p, plugin| plugin.context.params[:og_type] || MetadataPlugin.og_types[:product] || :product },
+        url: proc do |p, plugin|
+          url = p.url.merge! profile: p.profile.identifier, og_type: plugin.context.params[:og_type]
+          plugin.og_url_for url
+        end,
+        gr_hascurrencyvalue: proc{ |p, plugin| p.price.to_f },
+        gr_hascurrency: proc{ |p, plugin| p.environment.currency_unit },
+        title: proc{ |p, plugin| "#{p.name} - #{p.profile.name}" if p },
+        description: proc{ |p, plugin| ActionView::Base.full_sanitizer.sanitize p.description },
+
+        image: proc do |p, plugin|
+          img = "#{p.environment.top_url}#{p.image.public_filename}".html_safe if p.image
+          img = "#{p.environment.top_url}#{p.profile.image.public_filename}".html_safe if img.blank? and p.profile.image
+          img ||= MetadataPlugin.config[:open_graph][:environment_logo] rescue nil if img.blank?
+          img
+        end,
+        'image:type' => proc{ |p, plugin| p.image.content_type if p.image },
+        'image:height' => proc{ |p, plugin| p.image.height if p.image },
+        'image:width' => proc{ |p, plugin| p.image.width if p.image },
+
+        see_also: [],
+        site_name: proc{ |p, plugin| plugin.og_url_for p.profile.url },
+        updated_time: proc{ |p, plugin| p.updated_at.iso8601 if p.updated_at },
+
+        'locale:locale' => proc{ |p, plugin| p.environment.default_language },
+        'locale:alternate' => proc{ |p, plugin| p.environment.languages - [p.environment.default_language] if p.environment.languages },
+      }
+
+    end
+  end
+end
diff --git a/plugins/metadata/test/functional/manage_products_controller_test.rb b/plugins/metadata/test/functional/manage_products_controller_test.rb
deleted file mode 100644
index b75c8a6..0000000
--- a/plugins/metadata/test/functional/manage_products_controller_test.rb
+++ /dev/null
@@ -1,24 +0,0 @@
-require 'test_helper'
-require 'home_controller'
-
-class ManageProductsControllerTest < ActionController::TestCase
-
-  def setup
-    @controller = ManageProductsController.new
-    @request    = ActionController::TestRequest.new
-    @response   = ActionController::TestResponse.new
-    @enterprise = fast_create(Enterprise, name: 'test', identifier: 'test_ent')
-    @user = create_user_with_permission('test_user', 'manage_products', @enterprise)
-    @environment = @enterprise.environment
-    @environment.enable('products_for_enterprises')
-    login_as :test_user
-
-    @environment.enabled_plugins += ['MetadataPlugin']
-    @environment.save!
-  end
-
-  should "not crash on new products" do
-    get :new, profile: @enterprise.identifier
-  end
-
-end
diff --git a/plugins/metadata/test/functional/products_plugin/page_controller_test.rb b/plugins/metadata/test/functional/products_plugin/page_controller_test.rb
new file mode 100644
index 0000000..4dc0a70
--- /dev/null
+++ b/plugins/metadata/test/functional/products_plugin/page_controller_test.rb
@@ -0,0 +1,24 @@
+require 'test_helper'
+
+if defined? ProductsPlugin
+  module ProductsPlugin
+    class ManageProductsControllerTest < ActionController::TestCase
+
+      def setup
+        @controller = PageController.new
+        @request    = ActionController::TestRequest.new
+        @response   = ActionController::TestResponse.new
+        @enterprise = fast_create(Enterprise, name: 'test', identifier: 'test_ent')
+        @user = create_user_with_permission('test_user', 'manage_products', @enterprise)
+        login_as :test_user
+
+        @enterprise.environment.enable_plugin 'MetadataPlugin'
+      end
+
+      should "not crash on new products" do
+        get :new, profile: @enterprise.identifier
+      end
+
+    end
+  end
+end
diff --git a/plugins/orders/install.rb b/plugins/orders/install.rb
index 4e92bcd..909fb0e 100644
--- a/plugins/orders/install.rb
+++ b/plugins/orders/install.rb
@@ -1,3 +1,3 @@
-system "script/noosfero-plugins -q enable delivery"
+system 'script/noosfero-plugins -q enable products delivery'
 exit $?.exitstatus
 
diff --git a/plugins/orders/lib/ext/product.rb b/plugins/orders/lib/ext/product.rb
deleted file mode 100644
index 2b66243..0000000
--- a/plugins/orders/lib/ext/product.rb
+++ /dev/null
@@ -1,16 +0,0 @@
-require_dependency 'product'
-
-class Product
-
-  has_many :items, class_name: 'OrdersPlugin::Item', foreign_key: :product_id, dependent: :destroy
-
-  has_many :orders, through: :items
-  has_many :sales, through: :items
-  has_many :purchases, through: :items
-
-  attr_accessor :quantity_ordered
-
-  extend CurrencyHelper::ClassMethods
-  instance_exec &OrdersPlugin::Item::DefineTotals
-
-end
diff --git a/plugins/orders/lib/ext/products_plugin/product.rb b/plugins/orders/lib/ext/products_plugin/product.rb
new file mode 100644
index 0000000..138e4cf
--- /dev/null
+++ b/plugins/orders/lib/ext/products_plugin/product.rb
@@ -0,0 +1,18 @@
+require_dependency 'products_plugin/product'
+
+module ProductsPlugin
+  class Product
+
+    has_many :items, class_name: 'OrdersPlugin::Item', foreign_key: :product_id, dependent: :destroy
+
+    has_many :orders, through: :items
+    has_many :sales, through: :items
+    has_many :purchases, through: :items
+
+    attr_accessor :quantity_ordered
+
+    extend CurrencyHelper::ClassMethods
+    instance_exec &OrdersPlugin::Item::DefineTotals
+
+  end
+end
diff --git a/plugins/orders/models/orders_plugin/item.rb b/plugins/orders/models/orders_plugin/item.rb
index af91aa7..0e107f9 100644
--- a/plugins/orders/models/orders_plugin/item.rb
+++ b/plugins/orders/models/orders_plugin/item.rb
@@ -39,7 +39,7 @@ class OrdersPlugin::Item < ApplicationRecord
   belongs_to :sale, class_name: '::OrdersPlugin::Sale', foreign_key: :order_id, touch: true
   belongs_to :purchase, class_name: '::OrdersPlugin::Purchase', foreign_key: :order_id, touch: true
 
-  belongs_to :product
+  belongs_to :product, class_name: '::ProductsPlugin::Product'
   has_one :supplier, through: :product
 
   has_one :profile, through: :order
diff --git a/plugins/orders_cycle/lib/ext/product.rb b/plugins/orders_cycle/lib/ext/product.rb
deleted file mode 100644
index 67c1a4e..0000000
--- a/plugins/orders_cycle/lib/ext/product.rb
+++ /dev/null
@@ -1,12 +0,0 @@
-require_dependency 'product'
-
-# based on orders/lib/ext/product.rb
-class Product
-
-  has_many :orders_cycles_items, class_name: 'OrdersCyclePlugin::Item', foreign_key: :product_id
-
-  has_many :orders_cycles_orders, through: :orders_cycles_items, source: :order
-  has_many :orders_cycles_sales, through: :orders_cycles_items, source: :sale
-  has_many :orders_cycles_purchases, through: :orders_cycles_items, source: :purchase
-
-end
diff --git a/plugins/orders_cycle/lib/ext/products_plugin/product.rb b/plugins/orders_cycle/lib/ext/products_plugin/product.rb
new file mode 100644
index 0000000..304e18f
--- /dev/null
+++ b/plugins/orders_cycle/lib/ext/products_plugin/product.rb
@@ -0,0 +1,14 @@
+require_dependency 'products_plugin/product'
+
+# based on orders/lib/ext/product.rb
+module ProductsPlugin
+  class Product
+
+    has_many :orders_cycles_items, class_name: 'OrdersCyclePlugin::Item', foreign_key: :product_id
+
+    has_many :orders_cycles_orders, through: :orders_cycles_items, source: :order
+    has_many :orders_cycles_sales, through: :orders_cycles_items, source: :sale
+    has_many :orders_cycles_purchases, through: :orders_cycles_items, source: :purchase
+
+  end
+end
diff --git a/plugins/pg_search/db/migrate/20130320010063_create_indexes_for_search.rb b/plugins/pg_search/db/migrate/20130320010063_create_indexes_for_search.rb
index 4dd2f20..6c84d95 100644
--- a/plugins/pg_search/db/migrate/20130320010063_create_indexes_for_search.rb
+++ b/plugins/pg_search/db/migrate/20130320010063_create_indexes_for_search.rb
@@ -1,5 +1,5 @@
 class CreateIndexesForSearch < ActiveRecord::Migration
-  SEARCHABLES = %w[ article comment qualifier national_region certifier profile license scrap category ]
+  SEARCHABLES = %w[ article comment national_region profile license scrap category ]
   KLASSES = SEARCHABLES.map {|searchable| searchable.camelize.constantize }
   def self.up
     KLASSES.each do |klass|
diff --git a/plugins/shopping_cart/views/shopping_cart_plugin/send_request.js.erb b/plugins/shopping_cart/views/shopping_cart_plugin/send_request.js.erb
index e9a2e4a..69b763a 100644
--- a/plugins/shopping_cart/views/shopping_cart_plugin/send_request.js.erb
+++ b/plugins/shopping_cart/views/shopping_cart_plugin/send_request.js.erb
@@ -1,5 +1,5 @@
 <% if @success %>
-  window.location.href = <%= url_for(controller: :catalog, profile: @profile.identifier).to_json %>
+  window.location.href = <%= url_for(controller: 'products_plugin/catalog', profile: @profile.identifier).to_json %>
 <% else %>
   display_notice(<%= "#{_ 'Error'}: #{@error}".to_json %>)
 <% end %>
diff --git a/plugins/sniffer/install.rb b/plugins/sniffer/install.rb
new file mode 100644
index 0000000..fd1ea3d
--- /dev/null
+++ b/plugins/sniffer/install.rb
@@ -0,0 +1,3 @@
+system 'script/noosfero-plugins -q enable products'
+exit $?.exitstatus
+
diff --git a/plugins/statistics/install.rb b/plugins/statistics/install.rb
new file mode 100644
index 0000000..84357d1
--- /dev/null
+++ b/plugins/statistics/install.rb
@@ -0,0 +1,5 @@
+if ENV['CI']
+  system 'script/noosfero-plugins -q enable products'
+  exit $?.exitstatus
+end
+
diff --git a/plugins/suppliers/install.rb b/plugins/suppliers/install.rb
new file mode 100644
index 0000000..fd1ea3d
--- /dev/null
+++ b/plugins/suppliers/install.rb
@@ -0,0 +1,3 @@
+system 'script/noosfero-plugins -q enable products'
+exit $?.exitstatus
+
diff --git a/plugins/suppliers/lib/ext/price_detail.rb b/plugins/suppliers/lib/ext/price_detail.rb
deleted file mode 100644
index 8983a8e..0000000
--- a/plugins/suppliers/lib/ext/price_detail.rb
+++ /dev/null
@@ -1,8 +0,0 @@
-require_dependency 'price_detail'
-
-class PriceDetail
-
-  # should be on core, used by SuppliersPlugin::Import
-  attr_accessible :production_cost
-
-end
diff --git a/plugins/suppliers/lib/ext/product.rb b/plugins/suppliers/lib/ext/product.rb
deleted file mode 100644
index 75ad780..0000000
--- a/plugins/suppliers/lib/ext/product.rb
+++ /dev/null
@@ -1,178 +0,0 @@
-require_dependency 'product'
-
-# FIXME: The lines bellow should be on the core
-class Product
-
-  extend CurrencyHelper::ClassMethods
-  has_currency :price
-  has_currency :discount
-
-  scope :alphabetically, -> { order 'products.name ASC' }
-
-  scope :available, -> { where available: true }
-  scope :unavailable, -> { where 'products.available <> true' }
-  scope :archived, -> { where archived: true }
-  scope :unarchived, -> { where 'products.archived <> true' }
-
-  scope :with_available, -> (available) { where available: available }
-  scope :with_price, -> { where 'products.price > 0' }
-
-  # FIXME: transliterate input and name column
-  scope :name_like, -> (name) { where "name ILIKE ?", "%#{name}%" }
-  scope :with_product_category_id, -> (id) { where product_category_id: id }
-
-  scope :by_profile, -> (profile) { where profile_id: profile.id }
-  scope :by_profile_id, -> (profile_id) { where profile_id: profile_id }
-
-  def self.product_categories_of products
-    ProductCategory.find products.collect(&:product_category_id).compact.select{ |id| not id.zero? }
-  end
-
-  attr_accessible :external_id
-  settings_items :external_id, type: String, default: nil
-
-  # should be on core, used by SuppliersPlugin::Import
-  attr_accessible :price_details
-
-end
-
-class Product
-
-  attr_accessible :from_products, :from_product, :supplier_id, :supplier
-
-  has_many :sources_from_products, foreign_key: :to_product_id, class_name: 'SuppliersPlugin::SourceProduct', dependent: :destroy
-  has_one  :sources_from_product,  foreign_key: :to_product_id, class_name: 'SuppliersPlugin::SourceProduct'
-  has_many :sources_to_products, foreign_key: :from_product_id, class_name: 'SuppliersPlugin::SourceProduct', dependent: :destroy
-  has_one  :sources_to_product,  foreign_key: :from_product_id, class_name: 'SuppliersPlugin::SourceProduct'
-  has_many :to_products, -> { order 'id ASC' }, through: :sources_to_products
-  has_one  :to_product, -> { order 'id ASC' },  through: :sources_to_product,  autosave: true
-  has_many :from_products, -> { order 'id ASC' }, through: :sources_from_products
-  has_one  :from_product, -> { order 'id ASC' },  through: :sources_from_product, autosave: true
-
-  has_many :sources_from_2x_products, through: :from_products, source: :sources_from_products
-  has_one  :sources_from_2x_product,  through: :from_product,  source: :sources_from_product
-  has_many :sources_to_2x_products,   through: :to_products,   source: :sources_to_products
-  has_one  :sources_to_2x_product,    through: :to_product,    source: :sources_to_product
-  has_many :from_2x_products, through: :sources_from_2x_products, source: :from_product
-  has_one  :from_2x_product,  through: :sources_from_2x_product,  source: :from_product
-  has_many :to_2x_products,   through: :sources_to_2x_products,   source: :to_product
-  has_one  :to_2x_product,    through: :sources_to_2x_product,    source: :to_product
-
-  # semantic alias for supplier_from_product(s)
-  has_many :sources_supplier_products, foreign_key: :to_product_id, class_name: 'SuppliersPlugin::SourceProduct'
-  has_one  :sources_supplier_product,  foreign_key: :to_product_id, class_name: 'SuppliersPlugin::SourceProduct'
-  has_many :supplier_products, -> { order 'id ASC' }, through: :sources_supplier_products, source: :from_product
-  has_one  :supplier_product, -> { order 'id ASC' },  through: :sources_supplier_product,  source: :from_product, autosave: true
-  has_many :suppliers, -> { distinct.order 'id ASC' }, through: :sources_supplier_products
-  has_one  :supplier, -> { order 'id ASC' },  through: :sources_supplier_product
-
-  has_many :consumers, -> { distinct.order 'id ASC' }, through: :to_products, source: :profile
-  has_one  :consumer, -> { order 'id ASC' },  through: :to_product,  source: :profile
-
-  # overhide original, FIXME: rename to available_and_supplier_active
-  scope :available, -> {
-    joins(:suppliers).
-    where 'products.available = ? AND suppliers_plugin_suppliers.active = ?', true, true
-  }
-  scope :unavailable, -> {
-    where 'products.available <> ? OR suppliers_plugin_suppliers.active <> ?', true, true
-  }
-  scope :with_available, -> (available) {
-    op = if available then '=' else '<>' end
-    cond = if available then 'AND' else 'OR' end
-    where "products.available #{op} ? #{cond} suppliers_plugin_suppliers.active #{op} ?", true, true
-  }
-
-  scope :fp_name_like, -> (name) { where "from_products_products.name ILIKE ?", "%#{name}%" }
-  scope :fp_with_product_category_id, -> (id) { where 'from_products_products.product_category_id = ?', id }
-
-  # prefer distributed_products has_many to use DistributedProduct scopes and eager loading
-  scope :distributed, -> { where type: 'SuppliersPlugin::DistributedProduct'}
-  scope :own, -> { where type: nil }
-  scope :supplied, -> {
-    # this remove duplicates and allow sorting on the fields, unlike distinct
-    group('products.id').
-    where type: [nil, 'SuppliersPlugin::DistributedProduct']
-  }
-  scope :supplied_for_count, -> {
-    distinct.
-    where type: [nil, 'SuppliersPlugin::DistributedProduct']
-  }
-
-  scope :from_supplier, -> (supplier) { joins(:suppliers).where 'suppliers_plugin_suppliers.id = ?', supplier.id }
-  scope :from_supplier_id, -> (supplier_id) { joins(:suppliers).where 'suppliers_plugin_suppliers.id = ?', supplier_id }
-
-  after_create :distribute_to_consumers
-
-  def own?
-    self.class == Product
-  end
-  def distributed?
-    self.class == SuppliersPlugin::DistributedProduct
-  end
-  def supplied?
-    self.own? or self.distributed?
-  end
-
-  def supplier
-    # FIXME: use self.suppliers when rails support for nested preload comes
-    @supplier ||= self.sources_supplier_product.supplier rescue nil
-    @supplier ||= self.profile.self_supplier rescue nil
-  end
-  def supplier= value
-    @supplier = value
-  end
-  def supplier_id
-    self.supplier.id
-  end
-  def supplier_id= id
-    @supplier = profile.environment.profiles.find id
-  end
-
-  def supplier_dummy?
-    self.supplier ? self.supplier.dummy? : self.profile.dummy?
-  end
-
-  def distribute_to_consumer consumer, attrs = {}
-    distributed_product = consumer.distributed_products.where(profile_id: consumer.id, from_products_products: {id: self.id}).first
-    distributed_product ||= SuppliersPlugin::DistributedProduct.create! profile: consumer, from_product: self
-    distributed_product.update! attrs if attrs.present?
-    distributed_product
-  end
-
-  def destroy_dependent
-    self.to_products.each do |to_product|
-      to_product.destroy if to_product.respond_to? :dependent? and to_product.dependent?
-    end
-  end
-
-  # before_destroy and after_destroy don't work,
-  # see http://stackoverflow.com/questions/14175330/associations-not-loaded-in-before-destroy-callback
-  def destroy
-    self.class.transaction do
-      self.destroy_dependent
-      super
-    end
-  end
-
-  def diff from = self.from_product
-    return @changed_attrs if @changed_attrs
-    @changed_attrs = []
-    SuppliersPlugin::BaseProduct::CORE_DEFAULT_ATTRIBUTES.each do |attr|
-      @changed_attrs << attr if self[attr].present? and self[attr] != from[attr]
-    end
-    @changed_attrs
-  end
-
-  protected
-
-  def distribute_to_consumers
-    # shopping_cart creates products without a profile...
-    return unless self.profile
-
-    self.profile.consumers.except_people.except_self.each do |consumer|
-      self.distribute_to_consumer consumer.profile
-    end
-  end
-
-end
diff --git a/plugins/suppliers/lib/ext/products_plugin/product.rb b/plugins/suppliers/lib/ext/products_plugin/product.rb
new file mode 100644
index 0000000..6571c15
--- /dev/null
+++ b/plugins/suppliers/lib/ext/products_plugin/product.rb
@@ -0,0 +1,178 @@
+require_dependency 'products_plugin/product'
+
+# FIXME: The lines bellow should be on the core
+class Product
+
+  extend CurrencyHelper::ClassMethods
+  has_currency :price
+  has_currency :discount
+
+  scope :alphabetically, -> { order 'products.name ASC' }
+
+  scope :available, -> { where available: true }
+  scope :unavailable, -> { where 'products.available <> true' }
+  scope :archived, -> { where archived: true }
+  scope :unarchived, -> { where 'products.archived <> true' }
+
+  scope :with_available, -> (available) { where available: available }
+  scope :with_price, -> { where 'products.price > 0' }
+
+  # FIXME: transliterate input and name column
+  scope :name_like, -> (name) { where "name ILIKE ?", "%#{name}%" }
+  scope :with_product_category_id, -> (id) { where product_category_id: id }
+
+  scope :by_profile, -> (profile) { where profile_id: profile.id }
+  scope :by_profile_id, -> (profile_id) { where profile_id: profile_id }
+
+  def self.product_categories_of products
+    ProductCategory.find products.collect(&:product_category_id).compact.select{ |id| not id.zero? }
+  end
+
+  attr_accessible :external_id
+  settings_items :external_id, type: String, default: nil
+
+  # should be on core, used by SuppliersPlugin::Import
+  attr_accessible :price_details
+
+end
+
+class Product
+
+  attr_accessible :from_products, :from_product, :supplier_id, :supplier
+
+  has_many :sources_from_products, foreign_key: :to_product_id, class_name: 'SuppliersPlugin::SourceProduct', dependent: :destroy
+  has_one  :sources_from_product,  foreign_key: :to_product_id, class_name: 'SuppliersPlugin::SourceProduct'
+  has_many :sources_to_products, foreign_key: :from_product_id, class_name: 'SuppliersPlugin::SourceProduct', dependent: :destroy
+  has_one  :sources_to_product,  foreign_key: :from_product_id, class_name: 'SuppliersPlugin::SourceProduct'
+  has_many :to_products, -> { order 'id ASC' }, through: :sources_to_products
+  has_one  :to_product, -> { order 'id ASC' },  through: :sources_to_product,  autosave: true
+  has_many :from_products, -> { order 'id ASC' }, through: :sources_from_products
+  has_one  :from_product, -> { order 'id ASC' },  through: :sources_from_product, autosave: true
+
+  has_many :sources_from_2x_products, through: :from_products, source: :sources_from_products
+  has_one  :sources_from_2x_product,  through: :from_product,  source: :sources_from_product
+  has_many :sources_to_2x_products,   through: :to_products,   source: :sources_to_products
+  has_one  :sources_to_2x_product,    through: :to_product,    source: :sources_to_product
+  has_many :from_2x_products, through: :sources_from_2x_products, source: :from_product
+  has_one  :from_2x_product,  through: :sources_from_2x_product,  source: :from_product
+  has_many :to_2x_products,   through: :sources_to_2x_products,   source: :to_product
+  has_one  :to_2x_product,    through: :sources_to_2x_product,    source: :to_product
+
+  # semantic alias for supplier_from_product(s)
+  has_many :sources_supplier_products, foreign_key: :to_product_id, class_name: 'SuppliersPlugin::SourceProduct'
+  has_one  :sources_supplier_product,  foreign_key: :to_product_id, class_name: 'SuppliersPlugin::SourceProduct'
+  has_many :supplier_products, -> { order 'id ASC' }, through: :sources_supplier_products, source: :from_product
+  has_one  :supplier_product, -> { order 'id ASC' },  through: :sources_supplier_product,  source: :from_product, autosave: true
+  has_many :suppliers, -> { distinct.order 'id ASC' }, through: :sources_supplier_products
+  has_one  :supplier, -> { order 'id ASC' },  through: :sources_supplier_product
+
+  has_many :consumers, -> { distinct.order 'id ASC' }, through: :to_products, source: :profile
+  has_one  :consumer, -> { order 'id ASC' },  through: :to_product,  source: :profile
+
+  # overhide original, FIXME: rename to available_and_supplier_active
+  scope :available, -> {
+    joins(:suppliers).
+    where 'products.available = ? AND suppliers_plugin_suppliers.active = ?', true, true
+  }
+  scope :unavailable, -> {
+    where 'products.available <> ? OR suppliers_plugin_suppliers.active <> ?', true, true
+  }
+  scope :with_available, -> (available) {
+    op = if available then '=' else '<>' end
+    cond = if available then 'AND' else 'OR' end
+    where "products.available #{op} ? #{cond} suppliers_plugin_suppliers.active #{op} ?", true, true
+  }
+
+  scope :fp_name_like, -> (name) { where "from_products_products.name ILIKE ?", "%#{name}%" }
+  scope :fp_with_product_category_id, -> (id) { where 'from_products_products.product_category_id = ?', id }
+
+  # prefer distributed_products has_many to use DistributedProduct scopes and eager loading
+  scope :distributed, -> { where type: 'SuppliersPlugin::DistributedProduct'}
+  scope :own, -> { where type: nil }
+  scope :supplied, -> {
+    # this remove duplicates and allow sorting on the fields, unlike distinct
+    group('products.id').
+    where type: [nil, 'SuppliersPlugin::DistributedProduct']
+  }
+  scope :supplied_for_count, -> {
+    distinct.
+    where type: [nil, 'SuppliersPlugin::DistributedProduct']
+  }
+
+  scope :from_supplier, -> (supplier) { joins(:suppliers).where 'suppliers_plugin_suppliers.id = ?', supplier.id }
+  scope :from_supplier_id, -> (supplier_id) { joins(:suppliers).where 'suppliers_plugin_suppliers.id = ?', supplier_id }
+
+  after_create :distribute_to_consumers
+
+  def own?
+    self.class == Product
+  end
+  def distributed?
+    self.class == SuppliersPlugin::DistributedProduct
+  end
+  def supplied?
+    self.own? or self.distributed?
+  end
+
+  def supplier
+    # FIXME: use self.suppliers when rails support for nested preload comes
+    @supplier ||= self.sources_supplier_product.supplier rescue nil
+    @supplier ||= self.profile.self_supplier rescue nil
+  end
+  def supplier= value
+    @supplier = value
+  end
+  def supplier_id
+    self.supplier.id
+  end
+  def supplier_id= id
+    @supplier = profile.environment.profiles.find id
+  end
+
+  def supplier_dummy?
+    self.supplier ? self.supplier.dummy? : self.profile.dummy?
+  end
+
+  def distribute_to_consumer consumer, attrs = {}
+    distributed_product = consumer.distributed_products.where(profile_id: consumer.id, from_products_products: {id: self.id}).first
+    distributed_product ||= SuppliersPlugin::DistributedProduct.create! profile: consumer, from_product: self
+    distributed_product.update! attrs if attrs.present?
+    distributed_product
+  end
+
+  def destroy_dependent
+    self.to_products.each do |to_product|
+      to_product.destroy if to_product.respond_to? :dependent? and to_product.dependent?
+    end
+  end
+
+  # before_destroy and after_destroy don't work,
+  # see http://stackoverflow.com/questions/14175330/associations-not-loaded-in-before-destroy-callback
+  def destroy
+    self.class.transaction do
+      self.destroy_dependent
+      super
+    end
+  end
+
+  def diff from = self.from_product
+    return @changed_attrs if @changed_attrs
+    @changed_attrs = []
+    SuppliersPlugin::BaseProduct::CORE_DEFAULT_ATTRIBUTES.each do |attr|
+      @changed_attrs << attr if self[attr].present? and self[attr] != from[attr]
+    end
+    @changed_attrs
+  end
+
+  protected
+
+  def distribute_to_consumers
+    # shopping_cart creates products without a profile...
+    return unless self.profile
+
+    self.profile.consumers.except_people.except_self.each do |consumer|
+      self.distribute_to_consumer consumer.profile
+    end
+  end
+
+end
--
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