Introduce Booths for admin

app/models/admin_ability.rb

@@ -120,6 +120,7 @@ class AdminAbility
                              commercialable_id: conf_ids
     can :manage, Registration, conference_id: conf_ids
     can :manage, RegistrationPeriod, conference_id: conf_ids
+    can :manage, Booth, conference_id: conf_ids
     can :manage, Question, conference_id: conf_ids
     can :manage, Question do |question|
       !(question.conferences.pluck(:id) & conf_ids).empty?
@@ -170,6 +171,7 @@ class AdminAbility
       conf_ids_for_cfp.include?(conf.id)
     end
     can [:index, :show, :update], Resource, conference_id: conf_ids_for_cfp
+    can :manage, Booth, conference_id: conf_ids_for_cfp
     can :manage, Event, program: { conference_id: conf_ids_for_cfp }
     can :manage, EventType, program: { conference_id: conf_ids_for_cfp }
     can :manage, Track, program: { conference_id: conf_ids_for_cfp }

app/models/booth.rb

@@ -0,0 +1,75 @@
+class Booth < ActiveRecord::Base
+  include ActiveRecord::Transitions
+
+  belongs_to :conference
+  has_many :booth_requests, dependent: :destroy
+  has_many :users, through: :booth_requests
+
+  has_one :submitter_booth_user, -> { where(role: 'submitter') }, class_name: 'BoothRequest'
+  has_one  :submitter, through: :submitter_booth_user, source: :user
+
+  has_many :responsibles_booth_user, -> { where(role: 'responsible') }, class_name: 'BoothRequest'
+  has_many :responsibles, through: :responsibles_booth_user, source: :user
+
+  validates :title,
+            uniqueness: { case_sensitive: false },
+            presence: true
+
+  validates :description,
+            :reasoning,
+            :state,
+            :responsibles,
+            :conference_id,
+            :website_url,
+            :submitter_relationship,
+            presence: true
+
+  mount_uploader :picture, PictureUploader, mount_on: :logo_link
+
+  state_machine initial: :new do
+    state :new
+    state :withdrawn
+    state :to_accept
+    state :accepted
+    state :to_reject
+    state :rejected
+    state :canceled
+
+    event :restart do
+      transitions to: :new, from: [:withdrawn, :to_accept, :to_reject, :canceled]
+    end
+    event :withdraw do
+      transitions to: :withdrawn, from: [:new, :to_accept, :accepted, :to_reject, :rejected]
+    end
+    event :to_accept do
+      transitions to: :to_accept, from: [:new, :to_reject]
+    end
+    event :to_reject do
+      transitions to: :to_reject, from: [:new, :to_accept]
+    end
+    event :accept do
+      transitions to: :accepted, from: [:new, :to_accept]
+    end
+    event :reject do
+      transitions to: :rejected, from: [:new, :to_reject]
+    end
+    event :cancel do
+      transitions to: :canceled, from: [:accepted, :rejected]
+    end
+  end
+
+  def transition_possible?(transition)
+    self.class.state_machine.events_for(current_state).include?(transition)
+  end
+
+  def update_state(transition, _notice)
+    alert = ''
+    begin
+      send(transition)
+      save
+    rescue Transitions::InvalidTransition => e
+      alert = "Update state failed. #{e.message}"
+    end
+    alert
+  end
+end

app/models/booth_request.rb

@@ -0,0 +1,9 @@
+class BoothRequest < ActiveRecord::Base
+  belongs_to :booth
+  belongs_to :user
+
+  validates :role,
+            presence: true
+
+  ROLES = %w[submitter responsible].freeze
+end

app/models/conference.rb

@@ -28,6 +28,7 @@ class Conference < ActiveRecord::Base
   has_many :supporters, through: :ticket_purchases, source: :user
   has_many :tickets, dependent: :destroy
   has_many :resources, dependent: :destroy
+  has_many :booths, dependent: :destroy
 
   has_many :lodgings, dependent: :destroy
   has_many :registrations, dependent: :destroy

app/models/user.rb

@@ -56,6 +56,9 @@ class User < ActiveRecord::Base
   has_many :voted_events, through: :votes, source: :events
   has_many :subscriptions, dependent: :destroy
   has_many :tracks, foreign_key: 'submitter_id'
+  has_many :booth_requests
+  has_many :booth_requests, dependent: :destroy
+  has_many :booths, through: :booth_requests
   accepts_nested_attributes_for :roles
 
   scope :admin, -> { where(is_admin: true) }