2 kind of user Rails with Devise - ruby-on-rails

Question

This is really a noob question but I've search a lot and didn't find nothing for my solution.
A have a application with 2 kind of user. Customer and Contractor. I try with devise to build both and that work I can sign in contractor and same with customer all is good in the db etc. But some things don't work.
First I can't add company name in the sign in form for the contractor(I already did that a lot but know don't work) I make the migration etc but can't show the in the sign in form. I have no error just no show.
Finally I try to make the customer build the project and have his Id with the
current_cutomer.projects.build(project_params)
and I get a error about argument etc.
Sry for my english
projects_controller.rb
class ProjectsController < ApplicationController
before_action :find_project, only: [:show, :quote, :edit, :update]
before_action :authenticate_cus!, except: [:index, :show]
def home
end
def index
#projects = Project.all.order("created_at DESC")
end
def show
end
def quote
end
def new
#project = current_customer.projects.create
end
def create
#project = current_customer.projects.create(project_params)
if #project.save
redirect_to #project
else
render 'new'
end
end
def edit
end
def update
if #project.update(project_params)
redirect_to #project
else
render 'edit'
end
end
private
def project_params
params.require(:project).permit(:name, :description, :date, :budget, :category_id, :location, :image)
end
def find_project
#project = Project.find(params[:id])
end
end
schema.rb
ActiveRecord::Schema.define(version: 20160305071807) do
create_table "active_admin_comments", force: :cascade do |t|
t.string "namespace"
t.text "body"
t.string "resource_id", null: false
t.string "resource_type", null: false
t.string "author_type"
t.integer "author_id"
t.datetime "created_at"
t.datetime "updated_at"
end
add_index "active_admin_comments", ["author_type", "author_id"], name: "index_active_admin_comments_on_author_type_and_author_id"
add_index "active_admin_comments", ["namespace"], name: "index_active_admin_comments_on_namespace"
add_index "active_admin_comments", ["resource_type", "resource_id"], name: "index_active_admin_comments_on_resource_type_and_resource_id"
create_table "admin_users", force: :cascade do |t|
t.string "email", default: "", null: false
t.string "encrypted_password", default: "", null: false
t.string "reset_password_token"
t.datetime "reset_password_sent_at"
t.datetime "remember_created_at"
t.integer "sign_in_count", default: 0, null: false
t.datetime "current_sign_in_at"
t.datetime "last_sign_in_at"
t.string "current_sign_in_ip"
t.string "last_sign_in_ip"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
add_index "admin_users", ["email"], name: "index_admin_users_on_email", unique: true
add_index "admin_users", ["reset_password_token"], name: "index_admin_users_on_reset_password_token", unique: true
create_table "categories", force: :cascade do |t|
t.string "name"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
create_table "contractors", force: :cascade do |t|
t.string "email", default: "", null: false
t.string "encrypted_password", default: "", null: false
t.string "reset_password_token"
t.datetime "reset_password_sent_at"
t.datetime "remember_created_at"
t.integer "sign_in_count", default: 0, null: false
t.datetime "current_sign_in_at"
t.datetime "last_sign_in_at"
t.string "current_sign_in_ip"
t.string "last_sign_in_ip"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.string "company_name"
end
add_index "contractors", ["email"], name: "index_contractors_on_email", unique: true
add_index "contractors", ["reset_password_token"], name: "index_contractors_on_reset_password_token", unique: true
create_table "customers", force: :cascade do |t|
t.string "email", default: "", null: false
t.string "encrypted_password", default: "", null: false
t.string "reset_password_token"
t.datetime "reset_password_sent_at"
t.datetime "remember_created_at"
t.integer "sign_in_count", default: 0, null: false
t.datetime "current_sign_in_at"
t.datetime "last_sign_in_at"
t.string "current_sign_in_ip"
t.string "last_sign_in_ip"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
add_index "customers", ["email"], name: "index_customers_on_email", unique: true
add_index "customers", ["reset_password_token"], name: "index_customers_on_reset_password_token", unique: true
create_table "projects", force: :cascade do |t|
t.string "name"
t.text "description"
t.integer "budget"
t.date "date"
t.string "location"
t.integer "category_id"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.string "image_file_name"
t.string "image_content_type"
t.integer "image_file_size"
t.datetime "image_updated_at"
t.integer "customer_id"
end
add_index "projects", ["category_id"], name: "index_projects_on_category_id"
add_index "projects", ["customer_id"], name: "index_projects_on_customer_id"
end
form for the contractor
<h2>Sign up</h2>
<%= simple_form_for(resource, as: resource_name, url: registration_path(resource_name)) do |f| %>
<%= f.error_notification %>
<h1>New Contractor</h1>
<div class="form-inputs">
<%= f.input :company_name, required: true, autofocus: true %>
<%= f.input :email, required: true %>
<%= f.input :password, required: true, hint: ("#{#minimum_password_length} characters minimum" if #minimum_password_length) %>
<%= f.input :password_confirmation, required: true %>
</div>
<div class="form-actions">
<%= f.button :submit, "Sign up" %>
</div>
<% end %>
<%= render "contractors/shared/links" %>

Answer 1

Finally I did two user model with devise and in the application controller I wrote
devise_group :user, contains: [:customer, :company]
Now I can use
#project = current_user.projects.build(project_params)
Everything Is ok and just need to give the permissions.