Volunteer teams validation

app/models/volunteer.rb

@@ -12,6 +12,7 @@ class Volunteer < ActiveRecord::Base
   validates :email, format: {with: /\A[^@]+@[^@]+\z/}, presence: true
   validates :phone, presence: true, format: {with: /\A[+\- \(\)0-9]+\z/}
   validates :volunteer_teams, presence: true
+  validate :volunteer_teams_belong_to_conference
 
   phony_normalize :phone, default_country_code: 'BG'
 
@@ -35,4 +36,11 @@ class Volunteer < ActiveRecord::Base
   def send_notification_to_volunteer
     VolunteerMailer.volunteer_notification(self).deliver_later
   end
+
+  def volunteer_teams_belong_to_conference
+    conference_volunteer_teams = conference.volunteer_teams
+    unless volunteer_teams.all? { |team| conference_volunteer_teams.include? team }
+      errors.add :volunteer_teams, :invalid_volunteer_team
+    end
+  end
 end

config/locales/bg.yml

@@ -120,6 +120,8 @@ bg:
           attributes:
             picture:
               invalid_content_type: "невалиден формат на снимката"
+            volunteer_teams:
+              invalid_volunteer_team: "невалиден екип от доброволци"
     models:
       volunteership:
         one: доброволец

lib/initfest/views/public/volunteers/_form.slim

@@ -10,7 +10,7 @@
     = f.input :name, autofocus: true
     = f.input :email
     = f.input :phone, input_html: {value: @volunteer.phone.try(:phony_formatted, format: :international)}
-    = f.association :volunteer_teams, as: :check_boxes, wrapper: :default
+    = f.association :volunteer_teams, as: :check_boxes, wrapper: :default, collection: current_conference.volunteer_teams
     = f.input :language, as: :radio_buttons, collection: locale_collection, include_blank: false, wrapper: :default, checked: (@volunteer.language.presence || I18n.locale)
     = f.input :tshirt_size, collection: Volunteer::TSHIRT_SIZES, as: :radio_buttons, wrapper: :default, checked: (@volunteer.tshirt_size.presence || :m)
     = f.input :tshirt_cut, collection: Volunteer::TSHIRT_CUTS, as: :radio_buttons, wrapper: :default, checked: (@volunteer.tshirt_cut.presence || :unisex)