creates Manager

app/models/manager.rb

@@ -0,0 +1,12 @@
+class Manager < ActiveRecord::Base
+  validates :username, presence: true, uniqueness: true
+  validates :password_digest, presence: true
+
+  has_secure_password
+
+  def self.valid_auth?(username = nil, password = nil)
+    return false unless username.present? && password.present?
+    Manager.find_by(username: username).try(:authenticate, password).present?
+  end
+
+end

db/migrate/20150930082311_create_managers.rb

@@ -0,0 +1,12 @@
+class CreateManagers < ActiveRecord::Migration
+  def change
+    create_table :managers do |t|
+      t.string :username, null: false
+      t.string :password_digest, null: false
+      t.timestamp :last_login_at
+      t.timestamps
+    end
+
+    add_index :managers, [:username]
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20150926115929) do
+ActiveRecord::Schema.define(version: 20150930082311) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -168,6 +168,16 @@ ActiveRecord::Schema.define(version: 20150926115929) do
 
   add_index "locks", ["user_id"], name: "index_locks_on_user_id", using: :btree
 
+  create_table "managers", force: :cascade do |t|
+    t.string   "username",        null: false
+    t.string   "password_digest", null: false
+    t.datetime "last_login_at"
+    t.datetime "created_at"
+    t.datetime "updated_at"
+  end
+
+  add_index "managers", ["username"], name: "index_managers_on_username", using: :btree
+
   create_table "moderators", force: :cascade do |t|
     t.integer "user_id"
   end

spec/factories.rb

@@ -218,6 +218,11 @@ FactoryGirl.define do
     user
   end
 
+  factory :manager do
+    sequence(:username) { |n| "manager#{n}" }
+    password            'supersecret'
+  end
+
   factory :organization do
     user
     responsible_name "Johnny Utah"

spec/models/manager_spec.rb

@@ -0,0 +1,46 @@
+require 'rails_helper'
+
+describe Manager do
+
+  describe "valid?" do
+
+    let(:manager) { create(:manager) }
+
+    it "is false when username is blank" do
+      manager.username = nil
+      expect(manager).to_not be_valid
+    end
+    it "is false when password is blank" do
+      manager.password_digest = nil
+      expect(manager).to_not be_valid
+    end
+
+    it "is true if username and password present" do
+      expect(manager).to be_valid
+    end
+  end
+
+  describe "self.valid_auth?" do
+    before(:all) { create(:manager, username: "Silvia" ,password: "supersecret") }
+
+    it "is false when username is blank" do
+      expect(Manager.valid_auth?(nil, "supersecret")).to be false
+    end
+    it "is false when password is blank" do
+      expect(Manager.valid_auth?("Silvia", nil)).to be false
+    end
+
+    it "is false if manager unexistent" do
+      expect(Manager.valid_auth?("Manager", "supersecret")).to be false
+    end
+
+    it "is false if wrong password unexistent" do
+      expect(Manager.valid_auth?("Silvia", "wrong")).to be false
+    end
+
+    it "is true if right username/password combination" do
+      expect(Manager.valid_auth?("Silvia", "supersecret")).to be true
+    end
+  end
+
+end