app/models/concerns/reviewable.rb

+
+# Copyright (C) 2015 Centro de Computacao Cientifica e Software Livre
+# Departamento de Informatica - Universidade Federal do Parana
+#
+# This file is part of portalmec.
+#
+# portalmec is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# portalmec is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with portalmec.  If not, see <http://www.gnu.org/licenses/>.
+
 module Reviewable
   extend ActiveSupport::Concern
 
@@ -5,10 +24,13 @@ module Reviewable
     has_many :reviews, as: :reviewable, dependent: :destroy
   end
 
+  def reviewed?(user)
+    !reviews.where(user: user).blank?
+  end
+
   def review_ratings_average
     array = reviews.map(&:rating_average)
-    return 0.0 if array.size == 0
-    array.inject(0.0) { |a, e| a + e }.to_f / array.size.to_f
+    return 0.0 if array.size.zero?
+    array.inject(0.0) { |acc, elem| acc + elem }.to_f / array.size.to_f
   end
-
 end

app/models/concerns/scoreable.rb

+
+# Copyright (C) 2015 Centro de Computacao Cientifica e Software Livre
+# Departamento de Informatica - Universidade Federal do Parana
+#
+# This file is part of portalmec.
+#
+# portalmec is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# portalmec is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with portalmec.  If not, see <http://www.gnu.org/licenses/>.
+
 module Scoreable
   extend ActiveSupport::Concern
 
@@ -14,29 +33,28 @@ module Scoreable
   end
 
   def normalized_views
-    average_by_max(views.count, self.class.maximum(:views_count))
+    average_by_max(views.count, max_views)
   end
 
   def normalized_likes
-    average_by_max(likes.count, self.class.maximum(:likes_count))
+    average_by_max(likes.count, max_likes)
   end
 
   def normalized_downloads
-    average_by_max(downloads.count, self.class.maximum(:downloads_count))
+    average_by_max(downloads.count, max_downloads)
   end
 
-  def normalized_shares
-    average_by_max(shares.count, self.class.maximum(:shares_count))
-  end
+  # def normalized_shares
+  #   average_by_max(shares.count, self.class.maximum(:shares_count))
+  # end
 
-  def normalized_bookmarked
-    max = Bookmark.where(bookmarkable_type: self.class.name).group(:bookmarkable_id).order('count_all DESC').count
-    value = Bookmark.where(bookmarkable_id: id, bookmarkable_type: self.class.name).count
+  # def normalized_bookmarked
+  #   max = Bookmark.where(bookmarkable_type: self.class.name).group(:bookmarkable_id).order('count_all DESC').count
+  #   return 0.0 if max.blank?
 
-    return 0.0 if max.blank?
-
-    average_by_max(value, max.first[1])
-  end
+  #   value = Bookmark.where(bookmarkable_id: id, bookmarkable_type: self.class.name).count
+  #   average_by_max(value, max.first[1])
+  # end
 
   private
 
@@ -45,4 +63,21 @@ module Scoreable
     value.to_f / max.to_f
   end
 
+  def max_views
+    Rails.cache.fetch("#{self.class.name}/max_views", expires_in: 23.hours) do
+      self.class.maximum(:views_count)
+    end
+  end
+
+  def max_likes
+    Rails.cache.fetch("#{self.class.name}/max_likes", expires_in: 23.hours) do
+      self.class.maximum(:likes_count)
+    end
+  end
+
+  def max_downloads
+    Rails.cache.fetch("#{self.class.name}/max_downloads", expires_in: 23.hours) do
+      self.class.maximum(:downloads_count)
+    end
+  end
 end

app/models/concerns/sociable.rb

+
+# Copyright (C) 2015 Centro de Computacao Cientifica e Software Livre
+# Departamento de Informatica - Universidade Federal do Parana
+#
+# This file is part of portalmec.
+#
+# portalmec is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# portalmec is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with portalmec.  If not, see <http://www.gnu.org/licenses/>.
+
 module Sociable
   extend ActiveSupport::Concern
 
   included do
     has_many :views, as: :viewable, dependent: :destroy
-    has_many :downloads, as: :downloadable, dependent: :destroy
     has_many :likes, as: :likeable, dependent: :destroy
     has_many :shares, as: :shareable, dependent: :destroy
   end
@@ -20,14 +38,6 @@ module Sociable
     Like.where(user: user, likeable: self).destroy_all
   end
 
-  def download(user)
-    Download.create(user: user, downloadable: self)
-  end
-
-  def downloaded?(user)
-    !Download.where(user: user, downloadable: self).blank?
-  end
-
   def share(user)
     Share.create(user: user, shareable: self)
   end
@@ -36,12 +46,11 @@ module Sociable
     !Share.where(user: user, shareable: self).blank?
   end
 
-  def view(user)
-    View.create(user: user, viewable: self)
+  def view(user, ip)
+    View.create(user: user, ip: ip, viewable: self)
   end
 
   def viewed?(user)
     !View.where(user: user, viewable: self).blank?
   end
-
 end

app/models/concerns/stageable.rb

+
+# Copyright (C) 2015 Centro de Computacao Cientifica e Software Livre
+# Departamento de Informatica - Universidade Federal do Parana
+#
+# This file is part of portalmec.
+#
+# portalmec is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# portalmec is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with portalmec.  If not, see <http://www.gnu.org/licenses/>.
+
+module Stageable
+  extend ActiveSupport::Concern
+
+  included do
+    has_many :stage_relations, as: :stageable, dependent: :destroy
+    has_many :educational_stages, through: :stage_relations, dependent: :destroy
+  end
+
+  # A stageable can add educational stages
+  # Examples:
+  # stageable.add_educational_stages(ids: [1, 2, 3])
+  # stageable.add_educational_stages(ids: [1])
+  def add_educational_stages(ids: [])
+    ids.each do |educational_stage_id|
+      educational_stage = EducationalStage.find(educational_stage_id)
+      self.educational_stages << educational_stage
+    end
+  end
+
+  # A stageable can remove educational stages
+  # Examples:
+  # stageable.remove_educational_stages(ids: [1, 2, 3])
+  def remove_educational_stages(ids: [])
+    ids.each do |educational_stage_id|
+      educational_stage = EducationalStage.find(educational_stage_id)
+      StageRelation.where(educational_stage: educational_stage, stageable: self).destroy_all
+      self.educational_stages.delete(educational_stage)
+    end
+  end
+
+  def update_educational_stages(ids: [])
+    stageable = self
+    old_ids = stageable.educational_stages.map {|es| es.id }
+    add_educational_stages(ids: ids - old_ids)
+    remove_educational_stages(ids: old_ids - ids)
+  end
+end

app/models/concerns/stateful.rb

+
+# Copyright (C) 2015 Centro de Computacao Cientifica e Software Livre
+# Departamento de Informatica - Universidade Federal do Parana
+#
+# This file is part of portalmec.
+#
+# portalmec is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# portalmec is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with portalmec.  If not, see <http://www.gnu.org/licenses/>.
+
 module Stateful
   extend ActiveSupport::Concern
 
   included do
-    enum state: { draft: 0, published: 1, suspended: 2 }
+    enum state: { draft: 0, published: 1, suspended: 2, submitted: 3 }
   end
 end

app/models/concerns/subjectable.rb

+
+# Copyright (C) 2015 Centro de Computacao Cientifica e Software Livre
+# Departamento de Informatica - Universidade Federal do Parana
+#
+# This file is part of portalmec.
+#
+# portalmec is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# portalmec is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with portalmec.  If not, see <http://www.gnu.org/licenses/>.
+
+module Subjectable
+  extend ActiveSupport::Concern
+
+  included do
+    has_many :subject_relations, as: :subjectable, dependent: :destroy
+    has_many :subjects, through: :subject_relations, dependent: :destroy
+  end
+
+  # A subjectable can add subjects
+  # Examples:
+  # subjectable.add_subjects(ids: [1, 2, 3])
+  # subjectable.add_subjects(ids: [1])
+  def add_subjects(ids: [])
+    ids.each do |subject_id|
+      subject = Subject.find(subject_id)
+      SubjectRelation.where(subject: subject, subjectable: self).first_or_create
+      self.subjects << subject
+    end
+  end
+
+  # A subjectable can remove subjects
+  # Examples:
+  # subjectable.remove_subjects(ids: [1, 2, 3])
+  def remove_subjects(ids: [])
+    ids.each do |subject_id|
+      subject = Subject.find(subject_id)
+      SubjectRelation.where(subject: subject, subjectable: self).destroy_all
+      self.subjects.delete(subject)
+    end
+  end
+
+  def update_subjects(ids: [])
+    subjectable = self
+    old_ids = subjectable.subjects.map { |su| su.id }
+    add_subjects(ids: ids - old_ids)
+    remove_subjects(ids: old_ids - ids)
+  end
+end

app/models/concerns/taggable.rb

+
+# Copyright (C) 2015 Centro de Computacao Cientifica e Software Livre
+# Departamento de Informatica - Universidade Federal do Parana
+#
+# This file is part of portalmec.
+#
+# portalmec is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# portalmec is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with portalmec.  If not, see <http://www.gnu.org/licenses/>.
+
 module Taggable
   extend ActiveSupport::Concern
 

app/models/concerns/tagger.rb

+
+# Copyright (C) 2015 Centro de Computacao Cientifica e Software Livre
+# Departamento de Informatica - Universidade Federal do Parana
+#
+# This file is part of portalmec.
+#
+# portalmec is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# portalmec is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with portalmec.  If not, see <http://www.gnu.org/licenses/>.
+
 module Tagger
   extend ActiveSupport::Concern
 
@@ -5,7 +24,6 @@ module Tagger
     has_many :taggings, as: :tagger, dependent: :destroy
   end
 
-  # ~~~~ taggable actions ~~~~ #
   # An tagger can tagging learning object and collection
   # Examples:
   # tagger.tag(LearningObject.find(1), with: "Tag")
@@ -13,7 +31,7 @@ module Tagger
   def tag(taggable, with: [])
     with.each do |tag_name|
       tag = Tag.where(name: tag_name).first_or_create
-      Tagging.where(tag: tag, tagger_id: self.id, tagger_type: self.class.name, taggable_id: taggable, taggable_type: taggable.class.name).first_or_create
+      Tagging.where(tag: tag, tagger_id: id, tagger_type: self.class.name, taggable_id: taggable, taggable_type: taggable.class.name).first_or_create
     end
   end
 
@@ -21,12 +39,16 @@ module Tagger
   # Examples:
   # tagger.untag(LearningObject.find(1), "Tag")
   # tagger.untag(Collection.find(1), "Tag")
-  def untag(taggable, tag_name)
-    tag = Tag.find_by_name(tag_name)
-    Tagging.where(tagger: self, tag: tag, taggable: taggable).destroy_all
+  def untag(taggable, with: [])
+    with.each do |tag_name|
+      tag = Tag.find_by(name: tag_name)
+      Tagging.where(tagger: self, tag: tag, taggable: taggable).destroy_all
+    end
   end
 
-  # ~~~~ end taggable actions ~~~~ #
-
-
+  def update_tags(taggable, with: [])
+    old_tags = taggable.tags.map { |t| t.name }
+    tag(taggable, with: with - old_tags)
+    untag(taggable, with: old_tags - with)
+  end
 end

app/models/concerns/thumbnailable.rb

+
+# Copyright (C) 2015 Centro de Computacao Cientifica e Software Livre
+# Departamento de Informatica - Universidade Federal do Parana
+#
+# This file is part of portalmec.
+#
+# portalmec is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# portalmec is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with portalmec.  If not, see <http://www.gnu.org/licenses/>.
+
 module Thumbnailable
   extend ActiveSupport::Concern
 
@@ -5,5 +24,4 @@ module Thumbnailable
     has_attached_file :thumbnail, styles: { medium: '530x300', small: '250x140' }, default_url: ''
     validates_attachment_content_type :thumbnail, content_type: ['image/jpg', 'image/jpeg', 'image/png', 'image/gif']
   end
-
 end

app/models/concerns/trackable.rb

+
+# Copyright (C) 2015 Centro de Computacao Cientifica e Software Livre
+# Departamento de Informatica - Universidade Federal do Parana
+#
+# This file is part of portalmec.
+#
+# portalmec is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# portalmec is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with portalmec.  If not, see <http://www.gnu.org/licenses/>.
+
 module Trackable
   extend ActiveSupport::Concern
-  include PublicActivity::Model
+  include PublicActivity::Common
+  include ActivitiesFilterService
 
   included do
-    tracked owner: proc { |controller, model|
-      model.try(:user) || model.try(:owner) || controller.try(:current_user) }
+    after_create :new_create_activity
+    before_destroy :new_destroy_activity
+    after_update :new_update_activity
+  end
+
+  def new_update_activity
+    return nil if previous_changes.blank?
+    return new_activity(:update) if ignore_changes == %w(updated_at)
+    filtered = previous_changes.reject { |x| ignore_changes.include?(x) }
+    new_activity(:update) unless filtered.empty?
+  end
+
+  def new_create_activity
+    new_activity(:create)
+  end
+
+  def new_destroy_activity
+    params = { name: self.try(:name)}
+    new_activity(:destroy,params)
+  end
+
+  def new_activity(action,params=nil)
+    create_activity(
+      action,
+      owner: activity_owner,
+      recipient: activity_recipient,
+      privacy: activity_privacy,
+      parameters: params
+    )
   end
+
+  def ignore_changes
+    %w(updated_at)
+  end
+
+  def activity_owner
+    proc { |controller, model| model.try(:user) || model.try(:owner) || controller.try(:current_user) }
+  end
+
+  def activity_recipient
+    proc { |_controller, model| model.try(:recipient) || model }
+  end
+
+  def activity_privacy
+    proc { |_controller, model| model.try(:privacy) || model.try(:recipient).try(:privacy) || 'public' }
+  end
+
 end

app/models/contact.rb

+
+# Copyright (C) 2015 Centro de Computacao Cientifica e Software Livre
+# Departamento de Informatica - Universidade Federal do Parana
+#
+# This file is part of portalmec.
+#
+# portalmec is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# portalmec is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with portalmec.  If not, see <http://www.gnu.org/licenses/>.
+
+# == Schema Information
+#
+# Table name: contacts
+#
+#  id                     :integer          not null, primary key
+#  name                   :string
+#  email                  :string
+#  message                :text
+#
+class Contact < ApplicationRecord
+end

app/models/curator_assignment.rb

+
+# Copyright (C) 2015 Centro de Computacao Cientifica e Software Livre
+# Departamento de Informatica - Universidade Federal do Parana
+#
+# This file is part of portalmec.
+#
+# portalmec is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# portalmec is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with portalmec.  If not, see <http://www.gnu.org/licenses/>.
+
+# == Schema Information
+#
+# Table name: curator_assignments
+
+# t.integer  "submission_id"
+# t.integer  "user_id"
+# t.integer  "status",        default: 0
+# t.datetime "created_at",                null: false
+# t.datetime "updated_at",                null: false
+
+
+class CuratorAssignment < ApplicationRecord
+  include Trackable
+
+  enum status: [:assigned, :answered, :ignored]
+
+  belongs_to :submission
+  belongs_to :user
+
+  validates :submission, :user, presence: true
+
+  after_update :update_activities
+
+  def update_activities
+    if status_changed? && self.ignored?
+      PublicActivity::Activity.where(trackable: self).update(parameters: { status: status })
+    end
+  end
+
+  def activity_privacy
+    'private'
+  end
+
+  def activity_recipient
+    submission.learning_object
+  end
+end

app/models/download.rb

+
+# Copyright (C) 2015 Centro de Computacao Cientifica e Software Livre
+# Departamento de Informatica - Universidade Federal do Parana
+#
+# This file is part of portalmec.
+#
+# portalmec is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# portalmec is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with portalmec.  If not, see <http://www.gnu.org/licenses/>.
+
 # == Schema Information
 #
 # Table name: downloads
@@ -8,14 +27,24 @@
 #  user_id           :integer
 #  created_at        :datetime         not null
 #  updated_at        :datetime         not null
-#
+#  ip                :string           not null
 
 class Download < ApplicationRecord
   # *current_user* download *downloadable*
   include Trackable
 
   belongs_to :downloadable, polymorphic: true, counter_cache: true
-  belongs_to :user
+  belongs_to :user, optional: true
+
+  validates :ip, :downloadable, presence: true
+
+  def recipient
+    downloadable
+  end
+
+  private
 
-  validates_presence_of :user, :downloadable
+  def new_create_activity
+    new_activity(:create) unless user.nil?
+  end
 end

app/models/educational_stage.rb

+
+# Copyright (C) 2015 Centro de Computacao Cientifica e Software Livre
+# Departamento de Informatica - Universidade Federal do Parana
+#
+# This file is part of portalmec.
+#
+# portalmec is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# portalmec is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with portalmec.  If not, see <http://www.gnu.org/licenses/>.
+
+class EducationalStage < ApplicationRecord
+  has_many :stage_relations
+  has_and_belongs_to_many :searches
+  validates_presence_of :name
+end

app/models/email.rb

+
+# Copyright (C) 2015 Centro de Computacao Cientifica e Software Livre
+# Departamento de Informatica - Universidade Federal do Parana
+#
+# This file is part of portalmec.
+#
+# portalmec is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# portalmec is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with portalmec.  If not, see <http://www.gnu.org/licenses/>.
+
+class Email < ApplicationRecord
+  # attr_accessor :subject, :body, :roles, :emails, :all_users
+  has_and_belongs_to_many :roles
+  belongs_to :user
+
+  validates :emails, presence: true, if: :validate_emails?
+
+  after_save :set_emails, unless: :validate_emails?
+
+  def validate_emails?
+    !all_users && roles.blank?
+  end
+
+  def set_emails
+    merged_emails = self.emails
+    if all_users
+      # concat users emails to saved emails
+      merged_emails = merged_emails | User.pluck(:email)
+    else
+      roles.each do |role|
+        role_emails = role.users.pluck(:email)
+        merged_emails = merged_emails | role_emails
+      end
+    end
+    self.update_columns(emails: merged_emails)
+  end
+end

app/models/follow.rb

+
+# Copyright (C) 2015 Centro de Computacao Cientifica e Software Livre
+# Departamento de Informatica - Universidade Federal do Parana
+#
+# This file is part of portalmec.
+#
+# portalmec is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# portalmec is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with portalmec.  If not, see <http://www.gnu.org/licenses/>.
+
 # == Schema Information
 #
 # Table name: follows
@@ -19,4 +38,8 @@ class Follow < ApplicationRecord
 
   validates_presence_of :user, :followable
   validates :user_id, uniqueness: { scope: [:followable_id, :followable_type] }
+
+  def recipient
+    followable
+  end
 end

app/models/institution.rb

+
+# Copyright (C) 2015 Centro de Computacao Cientifica e Software Livre
+# Departamento de Informatica - Universidade Federal do Parana
+#
+# This file is part of portalmec.
+#
+# portalmec is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# portalmec is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with portalmec.  If not, see <http://www.gnu.org/licenses/>.
+
 # == Schema Information
 #
 # Table name: institutions
@@ -14,17 +33,16 @@
 
 class Institution < ApplicationRecord
   include Tagger
-
-  # *current_user* add member for instituion *name*
-  # *current_user* create instituion
-  # *current_user* destroy instituion
-  # *current_user* update instituion
   include Trackable
+  include Publisher
 
   has_and_belongs_to_many :users
   has_many :learning_objects, as: :publisher
   has_many :collections, as: :owner
 
+  has_attached_file :avatar, styles: { medium: '300x300>', thumb: '60x60>' }, default_url: ''
+  validates_attachment_content_type :avatar, content_type: ['image/jpg', 'image/jpeg', 'image/png', 'image/gif']
+
   validates_presence_of :name
 
   acts_as_paranoid

app/models/language.rb

+
+# Copyright (C) 2015 Centro de Computacao Cientifica e Software Livre
+# Departamento de Informatica - Universidade Federal do Parana
+#
+# This file is part of portalmec.
+#
+# portalmec is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# portalmec is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with portalmec.  If not, see <http://www.gnu.org/licenses/>.
+
 # == Schema Information
 #
 # Table name: languages
@@ -10,7 +29,7 @@
 #
 
 class Language < ApplicationRecord
-  has_many :learning_objects
+  has_and_belongs_to_many :learning_objects
 
   validates_uniqueness_of :code
   validates_presence_of :name, :code

app/models/learning_object.rb

+
+# Copyright (C) 2015 Centro de Computacao Cientifica e Software Livre
+# Departamento de Informatica - Universidade Federal do Parana
+#
+# This file is part of portalmec.
+#
+# portalmec is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# portalmec is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with portalmec.  If not, see <http://www.gnu.org/licenses/>.
+
  # == Schema Information
 #
 # Table name: learning_objects
@@ -14,7 +33,6 @@
 #  keywords               :text
 #  publisher_id           :integer
 #  publisher_type         :string
-#  language_id            :integer
 #  object_type_id         :integer
 #  created_at             :datetime         not null
 #  updated_at             :datetime         not null
@@ -34,55 +52,94 @@ class LearningObject < ApplicationRecord
   include Metadatable
   include Reviewable
   include Sociable
+  include Downloadable
   include Stateful
   include Scoreable
   include Thumbnailable
   include Taggable
+  include Subjectable
+  include Stageable
   include Highlights
+  include Complainable
 
   # *current_user* create learning object
   # *current_user* update learning object
   # *current_user* destroy learning object
   include Trackable
 
-  has_many :collection_items, as: :collectionable
+  has_paper_trail
+
+  has_many :collection_items, as: :collectionable, dependent: :destroy
   has_many :collections, through: :collection_items
-  has_many :complaints, as: :complaintable
   has_many :attachments, class_name: 'LearningObject::Attachment', autosave: true # autosave to allow import
 
-  belongs_to :publisher, polymorphic: true
-  belongs_to :language
-  belongs_to :license
-  belongs_to :object_type
-  belongs_to :attachment, class_name: 'LearningObject::Attachment'
+  has_and_belongs_to_many :language
+
+  belongs_to :publisher, polymorphic: true, counter_cache: true
+  belongs_to :license, optional: true
+  belongs_to :object_type, optional: true
+  belongs_to :attachment, class_name: 'LearningObject::Attachment', optional: true
+  has_one :submission
 
-  validates_presence_of :name, :publisher, :object_type, :language, :author
-  validates :id_dspace, presence: true, uniqueness: true, unless: :draft?
+  validates :name, :publisher, :object_type, :author, presence: true, unless: :draft?
+  validates :language, unless: :draft?, :length => { :minimum => 1 }
+  validates :id_dspace, presence: true, uniqueness: true, unless: :published?
 
-  default_scope { includes(:object_type, :attachment, :attachments).order(score: :desc) }
+  before_destroy :delete_index
+
+  validates :terms_of_service, acceptance: true, unless: :draft?
+
+  default_scope { includes(:object_type, :attachment, :attachments) }
   scope :missing_thumbnail, ->() { where(thumbnail_file_name: nil) }
 
-  searchkick language: 'brazilian', match: :word_start, searchable: [:name, :description, :author, :object_type], callbacks: :async
+  searchkick language: 'brazilian', match: :word_start, searchable: [:name, :description, :author, :object_type, :tags, :subjects, :educational_stages, :languages], callbacks: :async, index_prefix: Socket.gethostname.downcase, merge_mappings: true, mappings: {
+    learning_object: {
+      properties: {
+        published_at: {
+          type: "date"
+        }
+      }
+    }
+  }
 
   acts_as_paranoid
 
-  scope :search_import, -> { includes(:tags) }
+  scope :search_import, -> { includes(:object_type, :tags, :subjects, :educational_stages, :publisher) }
+
   def search_data
-    source = (!publisher.nil? && publisher.is_a?(Institution)) ? publisher.name : nil
-    type = object_type.try(:name)
+    source = !publisher.nil? ? publisher.name : ""
+    type = object_type.try(:id)
     {
-        name: name,
-        description: description,
-        author: author,
-        object_type: type,
-        score: score,
-        published_at: published_at,
-        tags: tags.map(&:name),
-        source: source,
-        state: LearningObject.states[state]
+      name: name,
+      description: description,
+      author: author,
+      object_type: type,
+      score: score,
+      published_at: published_at,
+      tags: tags.map(&:name),
+      subjects: subjects.pluck(:id),
+      educational_stages: educational_stages.pluck(:id),
+      languages: language.pluck(:id),
+      source: source,
+      state: LearningObject.states[state],
+      likes: likes_count,
+      downloads: downloads_count,
+      review_average: review_ratings_average
     }
   end
 
+  def name=(name)
+    write_attribute(:name, name.strip) if !name.blank?
+  end
+
+  def should_index?
+    deleted_at.nil?
+  end
+
+  def delete_index
+    LearningObject.searchkick_index.remove(self)
+  end
+
   def categories
     get_metadata_value_of 'dc.subject.category'
   end
@@ -91,18 +148,31 @@ class LearningObject < ApplicationRecord
     return attachment unless attachment.nil?
 
     unless attachments.blank?
-      at = attachments.find_by(bundle_name: 'ORIGINAL')
-      at = attachments.first if at.nil?
-      update(attachment: at)
-      return attachment
+      if object_type.try(:name) == 'Vídeo'
+        at = attachments.where("name LIKE '%.mp4'").first
+        return at unless at.nil?
+      end
+      at = attachments.where("name NOT LIKE '%.torrent' AND (bundle_name = 'ORIGINAL' OR bundle_name = 'ORE' OR bundle_name = 'TEMP')")
+      # at = attachments.first if at.nil?
+      unless at.blank?
+        update(attachment: at.first)
+        return attachment
+      end
     end
     nil
   end
 
+  # If a LO has more than one object, this gives the location of the main one
+  def default_attachment_location
+    default_attachment.try(:retrieve_url)
+  end
+
   def default_thumbnail
     return thumbnail unless thumbnail.blank?
     return nil if attachments.blank?
-    return default_attachment.thumbnail unless default_attachment.thumbnail.blank?
+		unless default_attachment.blank?
+			return default_attachment.thumbnail unless default_attachment.thumbnail.blank?
+		end
     attachments.each { |a| return a.thumbnail unless a.thumbnail.blank? }
     nil
   end
@@ -115,14 +185,14 @@ class LearningObject < ApplicationRecord
     default_attachment.retrieve_cache_link
   end
 
-  def url_reference
-    get_metadata_value_of 'dc.object.url'
+  # Download link with all relevant objects (currently only one)
+  def download_link
+    return link unless link.blank?
+    default_attachment_location
   end
 
-  ## checks if learning object link to an url.
-  # returns boolean
-  def has_url_reference?
-    !url_reference.blank?
+  def ignore_changes
+    super + %w(score views_count downloads_count likes_count shares_count)
   end
 
   ## score methods
@@ -139,4 +209,30 @@ class LearningObject < ApplicationRecord
     publisher.try('user_category')
   end
 
+  def ignore_changes
+    super + %w(score views_count downloads_count likes_count shares_count attachment_id)
+  end
+
+  def privacy
+    return "public" if self.published?
+    return "private"
+  end
+
+  def treat_complaintment
+    #Uncomment the line below if an arbitrary number of complaints are necessary to suspend the LO.
+    # if (Complaint.where(complainable_id: @complaint.complainable_id).count < 5)
+    self.suspended!
+  end
+
+  def complaint_accept(params)
+    self.destroy
+  end
+
+  def complaint_reject(params)
+    self.published!
+  end
+
+  def activity_owner
+    proc { |controller, model| model.try(:publisher) || controller.try(:current_user) }
+  end
 end

app/models/learning_object/attachment.rb

+
+# Copyright (C) 2015 Centro de Computacao Cientifica e Software Livre
+# Departamento de Informatica - Universidade Federal do Parana
+#
+# This file is part of portalmec.
+#
+# portalmec is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# portalmec is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with portalmec.  If not, see <http://www.gnu.org/licenses/>.
+
 # == Schema Information
 #
 # Table name: learning_object_attachments
@@ -26,8 +45,14 @@ class LearningObject::Attachment < ApplicationRecord
   include ::Thumbnailable
   belongs_to :learning_object
   scope :unknown_mime_type, ->() { where(format: 'Unknown') }
+  has_one :learning_object_attachment, as: :learning_object_attachment_id_son
+  belongs_to :learning_object_attachment, optional: true
+
 
   def retrieve_url
+    return retrieve_link if bundle_name == "ORE" || bundle_name == "LINK"
+    return retrieve_link.sub("public", "") if bundle_name == "TEMP"
+    return "#{DspaceService.link}#{retrieve_link}" if retrieve_link.include? "rest"
     "#{DspaceService.link}/rest#{retrieve_link}"
   end