Issue#15: Added Comment Notifications: notification_emails and comments view

app/models/ability.rb

@@ -137,6 +137,7 @@ class Ability
     can :manage, Sponsor, conference_id: conf_ids_for_organizer
     can :manage, SponsorshipLevel, conference_id: conf_ids_for_organizer
     can :manage, Ticket, conference_id: conf_ids_for_organizer
+    can :manage, Comment, conference_id: conf_ids_for_organizer
   end
 
   def signed_in_with_cfp_role(user)
@@ -155,6 +156,7 @@ class Ability
     can :manage, CallForPaper, conference_id: conf_ids_for_cfp
     can :manage, Commercial, commercialable_type: 'Event',
                              commercialable_id: Event.where(conference_id: conf_ids_for_cfp).pluck(:id)
+    can :manage, Comment, conference_id: conf_ids_for_cfp
   end
 
   def signed_in_with_info_desk_role(user)

app/models/comment.rb

@@ -3,6 +3,7 @@ class Comment < ActiveRecord::Base
   attr_accessible :commentable, :body, :user_id
   validates_presence_of :body
   validates_presence_of :user
+  after_create :send_notification
 
   # NOTE: install the acts_as_votable plugin if you
   # want user to vote on the quality of comments.
@@ -40,9 +41,18 @@ class Comment < ActiveRecord::Base
     where(commentable_type: commentable_str.to_s, commentable_id: commentable_id).order('created_at DESC')
   }
 
+  scope :find_since_last_login, lambda { |user|
+    where(created_at: (user.last_sign_in_at..Time.now)).order(created_at: :desc)
+  }
   # Helper class method to look up a commentable object
   # given the commentable class name and id
   def self.find_commentable(commentable_str, commentable_id)
     commentable_str.constantize.find(commentable_id)
   end
+
+  private
+
+  def send_notification
+    Mailbot.delay.send_notification_email_for_comment(self)
+  end
 end

app/models/email_settings.rb

@@ -49,7 +49,7 @@ class EmailSettings < ActiveRecord::Base
       h['registration_end_date'] = conference.registration_period.end_date
     end
 
-    if !event.nil?
+    if event
       h['eventtitle'] = event.title
       h['proposalslink'] = Rails.application.routes.url_helpers.conference_proposal_index_url(
                            conference.short_title, host: CONFIG['url_for_emails'])
@@ -67,6 +67,8 @@ class EmailSettings < ActiveRecord::Base
     parse_template(conf_update_template, values)
   end
 
+  private
+
   def parse_template(text, values)
     values.each do |key, value|
       if value.kind_of?(Date)

app/models/user.rb

@@ -11,6 +11,9 @@ class User < ActiveRecord::Base
 
   before_create :setup_role
 
+  # add scope
+  scope :comment_notifiable, ->(conference) {joins(:roles).where('roles.name IN (?)', [:organizer, :cfp]).where('roles.resource_id = ?', conference.id)}
+
   # Include default devise modules. Others available are:
   # :token_authenticatable, :confirmable,
   # :lockable, :timeoutable and :omniauthable