record who filled the volunteer, if the volunteer didn't self apply

app/controllers/volunteers_controller.rb

@@ -24,6 +24,7 @@ class VolunteersController < ApplicationController
     @volunteer = Volunteer.new(volunteer_params)
     @volunteer.schedules << Schedule.build
     @volunteer.build_contact
+    @volunteer.registrar = current_user
     authorize @volunteer
     if @volunteer.save
       redirect_to @volunteer, notice: t('volunteer_created')

app/models/user.rb

@@ -54,6 +54,10 @@ class User < ApplicationRecord
     email
   end
 
+  def full_name
+    "#{profile.contact.first_name} #{profile.contact.last_name}"
+  end
+
   def self.role_collection
     ROLES_FOR_USER_CREATE.map(&:to_sym)
   end

app/models/volunteer.rb

 class Volunteer < ApplicationRecord
   include AssociatableFields
   include GenderCollection
+  include FullName
 
   has_one :contact, as: :contactable
   accepts_nested_attributes_for :contact
@@ -19,6 +20,9 @@ class Volunteer < ApplicationRecord
   STATES = [REGISTERED] + STATES_FOR_REVIEWED
 
   belongs_to :user, optional: true
+  belongs_to :registrar, optional: true,
+    class_name: 'User', foreign_key: 'registrar_id'
+
   has_attached_file :avatar, styles: { thumb: '100x100#' }
 
   validates :state, inclusion: { in: STATES }

app/views/volunteers/_volunteer.html.slim

@@ -19,6 +19,10 @@ tr
   td
     - if volunteer.contact.contact_emails.any?
       = link_to volunteer.contact.contact_emails.first.body
+    - if volunteer.registrar.present?
+      = volunteer.registrar.full_name
+    - else
+      = 'Selbstanmelder'
   td = link_to t_action(:show), volunteer
   td = link_to t_action(:edit), edit_volunteer_path(volunteer)
   td = link_to t_action(:destroy), volunteer, data: { confirm: t_confirm_delete(volunteer) }, method: :delete

config/locales/de.yml

@@ -127,6 +127,7 @@ de:
         woman: Frau
         working_percent: Stellenprozent
         zip: Postleitzahl
+        registrar: Registrator
     errors:
       models:
         profile:

db/migrate/20170627103507_add_missing_fields_to_volunteers.rb

@@ -5,6 +5,7 @@ class AddMissingFieldsToVolunteers < ActiveRecord::Migration[5.1]
       t.text :volunteer_experience_desc
       t.string :region_specific
       t.remove :skills
+      t.bigint :registrar_id
     end
 
     change_table :contacts do |t|

db/schema.rb

@@ -174,7 +174,6 @@ ActiveRecord::Schema.define(version: 20170627103507) do
     t.boolean "experience"
     t.text "expectations"
     t.text "strengths"
-    t.text "skills"
     t.text "interests"
     t.string "state", default: "registered"
     t.string "duration"
@@ -202,10 +201,10 @@ ActiveRecord::Schema.define(version: 20170627103507) do
     t.bigint "user_id"
     t.string "rejection_type"
     t.text "rejection_text"
-    t.boolean "active"
     t.string "working_percent"
     t.text "volunteer_experience_desc"
     t.string "region_specific"
+    t.bigint "registrar_id"
     t.index ["deleted_at"], name: "index_volunteers_on_deleted_at"
     t.index ["user_id"], name: "index_volunteers_on_user_id"
   end