Add invite responsible to form

It is added so that user can enter email ids of other users, who they want to invite to become booth responsible.

app/controllers/admin/booths_controller.rb

@@ -129,7 +129,8 @@ module Admin
 
     def booth_params
       params.require(:booth).permit(:title, :description, :reasoning, :state, :picture, :conference_id,
-                                    :created_at, :updated_at, :submitter_relationship, :website_url, responsible_ids: [])
+                                    :created_at, :updated_at, :submitter_relationship, :website_url, :invite_responsible,
+                                    responsible_ids: [])
     end
   end
 end

app/controllers/booths_controller.rb

@@ -94,6 +94,7 @@ class BoothsController < ApplicationController
 
   def booth_params
     params.require(:booth).permit(:title, :description, :reasoning, :state, :picture, :conference_id,
-                                  :created_at, :updated_at, :submitter_relationship, :website_url, responsible_ids: [])
+                                  :created_at, :updated_at, :submitter_relationship, :website_url, :invite_responsible,
+                                  responsible_ids: [])
   end
 end

app/models/booth.rb

@@ -4,6 +4,8 @@ class Booth < ApplicationRecord
   include ActiveRecord::Transitions
   has_paper_trail ignore: [:updated_at], meta: { conference_id: :conference_id }
 
+  attr_accessor :invite_responsible
+
   belongs_to :conference
   has_many :booth_requests, dependent: :destroy
   has_many :users, through: :booth_requests

app/views/booths/_form.html.haml

@@ -12,6 +12,8 @@
           hint: 'e.g. employee, comunity manager, etc'
         = f.input :website_url
         = responsibles_selector_input f
+        = f.input :invite_responsible,
+          hint: 'This field is to invite unregistered users using their email to become booth responsibles.'
         = image_tag f.object.picture.thumb.url if f.object.picture?
         = f.input :picture