Add basic invitations

app/controllers/invitations_controller.rb

@@ -0,0 +1,33 @@
+class InvitationsController < ApplicationController
+  before_action :require_user_signed_in
+
+  # GET /invitations
+  def index
+    @invitations = current_user.invitations
+  end
+
+  # POST /invitations
+  def create
+    @invitation = Invitation.new(user: current_user)
+
+    respond_to do |format|
+      if @invitation.save
+        format.html { redirect_to @invitation, notice: 'Invitation was successfully created.' }
+        format.json { render :show, status: :created, location: @invitation }
+      else
+        format.html { render :new }
+        format.json { render json: @invitation.errors, status: :unprocessable_entity }
+      end
+    end
+  end
+
+  # DELETE /invitations/1
+  def destroy
+    @invitation = current_user.invitations.find(params[:id])
+    @invitation.destroy
+    respond_to do |format|
+      format.html { redirect_to invitations_url }
+      format.json { head :no_content }
+    end
+  end
+end

app/helpers/invitations_helper.rb

@@ -0,0 +1,2 @@
+module InvitationsHelper
+end

app/models/invitation.rb

@@ -0,0 +1,14 @@
+class Invitation < ApplicationRecord
+  # Relations
+  belongs_to :user
+
+  validates_presence_of :user
+
+  before_create :generate_token
+
+  private
+
+  def generate_token
+    self.token = SecureRandom.hex(8)
+  end
+end

app/models/user.rb

@@ -1,4 +1,7 @@
 class User < ApplicationRecord
+  # Relations
+  has_many :invitations, dependent: :destroy
+
   # Include default devise modules. Others available are:
   # :confirmable, :lockable, :timeoutable, :trackable and :omniauthable
   devise :ldap_authenticatable,

app/views/invitations/index.html.erb

@@ -0,0 +1,23 @@
+<section>
+  <h2>Invitations</h2>
+
+  <table>
+    <thead>
+      <tr>
+        <th>Token</th>
+        <th>Created at</th>
+        <th colspan="3"></th>
+      </tr>
+    </thead>
+
+    <tbody>
+      <% @invitations.each do |invitation| %>
+        <tr>
+          <td><%= invitation.token %></td>
+          <td><%= invitation.created_at %></td>
+          <td><%= link_to 'Delete', invitation, method: :delete, data: { confirm: 'Are you sure?' } %></td>
+        </tr>
+      <% end %>
+    </tbody>
+  </table>
+</section>