Add invitation system (#398)

app/assets/stylesheets/application.sass.scss

@@ -30,6 +30,7 @@
 @import 'components/SiteSettings/Roadmap';
 @import 'components/SiteSettings/Authentication';
 @import 'components/SiteSettings/Appearance/';
+@import 'components/SiteSettings/Invitations';
 
 /* Moderation Components */
 @import 'components/Moderation/Feedback';

app/assets/stylesheets/common/_scroll_shadows.scss

@@ -1,6 +1,5 @@
 // Credits: https://codepen.io/chriscoyier/pen/YzXBYvL
 .scroll-shadows {
-  max-height: 200px;
   overflow: auto;
 
   background:

app/assets/stylesheets/components/SiteSettings/Invitations/index.scss

@@ -0,0 +1,93 @@
+.newInvitationsBox {
+  textarea#body {
+    height: 280px;
+  }
+
+  .submitFormDiv {
+    button {
+      @extend .mr-4;
+
+      vertical-align: text-bottom;
+    }
+
+    .testInvitation {
+      @extend .mt-2;
+      
+      display: inline-block;
+  
+      a.actionLink { display: inline-block; }
+    }
+  }
+}
+
+.pastInvitationsBox {
+  .filterInvitationsNav {
+    @extend
+      .nav,
+      .nav-pills,
+      .align-self-center,
+      .px-2,
+      .py-1,
+      .mt-4;
+  
+    background-color: var(--astuto-grey-light);
+    border-radius: 0.5rem;
+  
+    .nav-item {
+      cursor: pointer;
+    }
+  
+    .nav-link {
+      @extend
+        .px-3,
+        .py-1;
+  
+      color: var(--astuto-black);
+  
+      &.active {
+        color: var(--astuto-black);
+        background-color: white;
+        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
+      }
+    }
+  }
+  
+  ul.invitationsList {
+    @extend
+      .scroll-shadows,
+      .mt-4,
+      .pl-0;
+  
+    list-style: none;
+    height: 500px;
+    overflow-y: scroll;
+  
+    li.invitationListItem {
+      @extend
+        .d-flex,
+        .justify-content-between,
+        .my-2,
+        .p-2;
+  
+      div.invitationUserInfo {
+        @extend .d-flex;
+  
+        span.invitationEmail {
+          @extend
+            .align-self-center,
+            .ml-4;
+  
+          font-size: 18px;
+        }
+      }
+  
+      div.invitationInfo {
+        @extend .d-flex;
+  
+        span.invitationAcceptedAt, span.invitationSentAt {
+          @extend .align-self-center, .mutedText;
+        }
+      }
+    }
+  }
+}

app/assets/stylesheets/components/SiteSettings/index.scss

@@ -14,7 +14,6 @@
   position: sticky;
   bottom: 16px;
   z-index: 100;
-  width: 80%;
   margin: 0 auto;
 
   span.warning {

app/controllers/application_controller.rb

@@ -6,7 +6,7 @@ class ApplicationController < ActionController::Base
 
   rescue_from Pundit::NotAuthorizedError, with: :user_not_authorized
 
-  before_action :configure_permitted_parameters, if: :devise_controller?
+  before_action :configure_devise_permitted_parameters, if: :devise_controller?
   before_action :check_tenant_is_private, if: :should_check_tenant_is_private?
   
   prepend_before_action :load_tenant_data
@@ -31,8 +31,8 @@ class ApplicationController < ActionController::Base
 
   protected
 
-    def configure_permitted_parameters
-      additional_permitted_parameters = [:full_name, :notifications_enabled]
+    def configure_devise_permitted_parameters
+      additional_permitted_parameters = [:full_name, :notifications_enabled, :invitation_token]
 
       devise_parameter_sanitizer.permit(:sign_up, keys: additional_permitted_parameters)
       devise_parameter_sanitizer.permit(:account_update, keys: additional_permitted_parameters)

app/controllers/invitations_controller.rb

@@ -0,0 +1,62 @@
+class InvitationsController < ApplicationController
+  before_action :authenticate_admin
+
+  def create
+    to = invitation_params[:to].split(',').map(&:strip).select { |email| URI::MailTo::EMAIL_REGEXP.match?(email) }
+    subject = invitation_params[:subject]
+    body = invitation_params[:body]
+
+    num_invitations_sent = 0
+
+    to.each do |email|
+      invitation_token = SecureRandom.hex(16)
+      invitation_token_digest = Digest::SHA256.hexdigest(invitation_token)
+
+      # skip if user already registered
+      next if User.find_by(email: email).present?
+
+      invitation = Invitation.find_or_initialize_by(email: email)
+
+      # skip if invitation already exists and accepted
+      next if invitation.persisted? && invitation.accepted_at.present?
+
+      invitation.token_digest = invitation_token_digest
+      invitation.save!
+
+      # replace %link% placeholder in body with the invitation link
+      body_with_link = body.gsub('%link%', get_url_for(method(:new_user_registration_url), options: { invitation_token: invitation_token, email: email }))
+
+      InvitationMailer.invite(to: email, subject: subject, body: body_with_link).deliver_later
+
+      num_invitations_sent += 1
+    end
+
+    status = num_invitations_sent > 0 ? :ok : :unprocessable_entity
+    render json: { num_invitations_sent: num_invitations_sent }, status: status
+  end
+
+  def test
+    to = invitation_params[:to]
+    subject = invitation_params[:subject]
+    body = invitation_params[:body]
+
+    invitation_token = SecureRandom.hex(16)
+    subject = "[TEST] " + subject
+    body_with_link = body.gsub('%link%', get_url_for(method(:new_user_registration_url), options: { invitation_token: invitation_token, email: to }))
+
+    InvitationMailer.invite(to: to, subject: subject, body: body_with_link).deliver_later
+
+    render json: {}, status: :ok
+  end
+
+
+  private
+
+    def invitation_params
+      params.require(:invitations).tap do |invitation|
+        invitation.require(:to)
+        invitation.require(:subject)
+        invitation.require(:body)
+      end
+    end
+end

app/controllers/registrations_controller.rb

@@ -10,6 +10,38 @@ class RegistrationsController < Devise::RegistrationsController
     ts = Current.tenant.tenant_setting
     email = sign_up_params[:email]
 
+    # Handle invitations
+    is_invitation = sign_up_params[:invitation_token].present?
+    is_invitation_valid = true
+    invitation = nil
+    if is_invitation
+      invitation = Invitation.find_by(email: email)
+      
+      if invitation.nil? || invitation.token_digest != Digest::SHA256.hexdigest(sign_up_params[:invitation_token]) || invitation.accepted_at.present?
+        flash[:alert] = t('errors.unauthorized')
+        redirect_to new_user_registration_path and return
+      end
+
+      ActiveRecord::Base.transaction do
+        invitation.accepted_at = Time.now
+        invitation.save!
+
+        # Sign up user without confirmation email and log them in
+        user = User.new(email: email, full_name: sign_up_params[:full_name], password: sign_up_params[:password], password_confirmation: sign_up_params[:password], status: "active")
+        user.skip_confirmation
+        user.save!
+        sign_in(user)
+
+        flash[:notice] = t('devise.registrations.signed_up')
+        redirect_to root_path
+      end
+
+      return
+    end
+
+    # ... if not an invitation, continue with normal registration ...
+    
+    # Check if email registration is allowed
     if ts.email_registration_policy == "none_allowed" || (ts.email_registration_policy == "custom_domains_allowed" && !allowed_domain?(email))
       flash[:alert] = t('errors.email_domain_not_allowed')
       redirect_to new_user_registration_path and return

app/controllers/site_settings_controller.rb

@@ -19,6 +19,10 @@ class SiteSettingsController < ApplicationController
   def roadmap
   end
 
+  def invitations
+    @invitations = Invitation.all.order(updated_at: :desc)
+  end
+
   def appearance
   end
 

app/javascript/components/SiteSettings/Appearance/AppearanceSiteSettingsP.tsx

@@ -1,5 +1,6 @@
 import * as React from 'react';
 import { useEffect } from 'react';
+import { SubmitHandler, useForm } from 'react-hook-form';
 import I18n from 'i18n-js';
 
 import Box from '../../common/Box';
@@ -7,7 +8,6 @@ import SiteSettingsInfoBox from '../../common/SiteSettingsInfoBox';
 import Button from '../../common/Button';
 import HttpStatus from '../../../constants/http_status';
 import { getLabel } from '../../../helpers/formUtils';
-import { SubmitHandler, useForm } from 'react-hook-form';
 import ActionLink from '../../common/ActionLink';
 import { LearnMoreIcon } from '../../common/Icons';
 

app/javascript/components/SiteSettings/Invitations/index.tsx

@@ -0,0 +1,246 @@
+import * as React from 'react';
+import Gravatar from 'react-gravatar';
+import { useForm } from 'react-hook-form';
+import I18n from 'i18n-js';
+
+import Box from '../../common/Box';
+import Button from '../../common/Button';
+import { DangerText, SmallMutedText, SuccessText } from '../../common/CustomTexts';
+import buildRequestHeaders from '../../../helpers/buildRequestHeaders';
+import HttpStatus from '../../../constants/http_status';
+import { isValidEmail } from '../../../helpers/regex';
+import IInvitation from '../../../interfaces/IInvitation';
+import friendlyDate from '../../../helpers/datetime';
+import ActionLink from '../../common/ActionLink';
+import { TestIcon } from '../../common/Icons';
+
+interface Props {
+  siteName: string;
+  invitations: Array<IInvitation>;
+  currentUserEmail: string;
+  authenticityToken: string;
+}
+
+interface IFormData {
+  to: string;
+  subject: string;
+  body: string;
+}
+
+const MAX_INVITATIONS = 20;
+const LINK_PLACEHOLDER = '%link%';
+
+const Invitations = ({ siteName, invitations, currentUserEmail, authenticityToken }: Props) => {
+  const {
+    register,
+    handleSubmit,
+    formState: {},
+    watch,
+  } = useForm<IFormData>({
+    defaultValues: {
+      to: '',
+      subject: I18n.t('site_settings.invitations.subject_default', { name: siteName }),
+      body: I18n.t('site_settings.invitations.body_default', { name: siteName }),
+    },
+  });
+
+  const to = watch('to');
+  const emailList = to.split(',');
+
+  const subject = watch('subject')
+  const body = watch('body')
+
+  const [successMessage, setSuccessMessage] = React.useState<string | null>(null);
+  const [errorMessage, setErrorMessage] = React.useState<string | null>(null);
+  const [filter, setFilter] = React.useState<'all' | 'pending' | 'accepted'>('pending');
+
+  const pendingInvitations = invitations.filter((invitation) => !invitation.accepted_at);
+  const acceptedInvitations = invitations.filter((invitation) => invitation.accepted_at);
+
+  let invitationsToDisplay = invitations;
+  if (filter === 'pending') invitationsToDisplay = pendingInvitations;
+  if (filter === 'accepted') invitationsToDisplay = acceptedInvitations;
+
+  return (
+    <>
+    <Box customClass="newInvitationsBox">
+      <h2>{ I18n.t('site_settings.invitations.new_invitations_title') }</h2>
+
+      <form
+        onSubmit={handleSubmit(async (formData) => {
+          const emailToList = formData.to.split(',').map((email) => email.trim());
+          const invalidEmails = emailToList.filter((email) => !isValidEmail(email));
+
+          if (emailList.length > MAX_INVITATIONS) {
+            alert(I18n.t('site_settings.invitations.too_many_emails', { count: MAX_INVITATIONS }));
+            return;
+          }
+
+          if (invalidEmails.length > 0) {
+            alert(I18n.t('site_settings.invitations.invalid_emails', { emails: invalidEmails.join(', ').replace(/, $/, '') }));
+            return;
+          }
+
+          if (!formData.body.includes(LINK_PLACEHOLDER)) {
+            alert(I18n.t('site_settings.invitations.invitation_link_not_found'));
+            return;
+          }
+
+          const res = await fetch(`/invitations`, {
+            method: 'POST',
+            headers: buildRequestHeaders(authenticityToken),
+            body: JSON.stringify({
+              invitations: {
+                to: formData.to,
+                subject: formData.subject,
+                body: formData.body,
+              }
+            }),
+          });
+
+          if (res.status === HttpStatus.OK) {
+            setSuccessMessage(I18n.t('site_settings.invitations.submit_success'));
+            setErrorMessage(null);
+            setTimeout(() => window.location.reload(), 2000);
+          } else {
+            setErrorMessage(I18n.t('site_settings.invitations.submit_failure'));
+          }
+        }
+      )}>
+        <div className="formGroup">
+          <label htmlFor="to">{ I18n.t('site_settings.invitations.to') }</label>
+          <input
+            {...register('to', { required: true })}
+            placeholder="alice@example.com,bob@test.org"
+            type="text"
+            className="formControl"
+            id="to"
+          />
+          <SmallMutedText>
+            { I18n.t('site_settings.invitations.to_help') }
+          </SmallMutedText>
+        </div>
+
+        <div className="formGroup">
+          <label htmlFor="subject">{ I18n.t('site_settings.invitations.subject') }</label>
+          <input
+            {...register('subject', { required: true })}
+            type="text"
+            className="formControl"
+            id="subject"
+          />
+        </div>
+
+        <div className="formGroup">
+          <label htmlFor="body">{ I18n.t('site_settings.invitations.body') }</label>
+          <textarea
+            {...register('body', { required: true })}
+            className="formControl"
+            id="body"
+          />
+        </div>
+
+        <div className="submitFormDiv">
+          <Button onClick={() => {}} disabled={to === ''}>
+            { I18n.t('site_settings.invitations.send', { count: emailList.length }) }
+          </Button>
+          
+          <div className="testInvitation">
+            <ActionLink
+              icon={<TestIcon />}
+              onClick={async () => {
+                if (!body.includes(LINK_PLACEHOLDER)) {
+                  alert(I18n.t('site_settings.invitations.invitation_link_not_found'));
+                  return;
+                }
+
+                const res = await fetch(`/invitations/test`, {
+                  method: 'POST',
+                  headers: buildRequestHeaders(authenticityToken),
+                  body: JSON.stringify({
+                    invitations: {
+                      to: currentUserEmail,
+                      subject: subject,
+                      body: body,
+                    }
+                  }),
+                });
+
+                if (res.status === HttpStatus.OK) {
+                  alert(I18n.t('site_settings.invitations.test_invitation_success', { email: currentUserEmail }));
+                } else {
+                  alert(I18n.t('site_settings.invitations.submit_failure'));
+                }
+              }}
+            >
+              { I18n.t('site_settings.invitations.test_invitation_button') }
+            </ActionLink>
+
+            <SmallMutedText>{ I18n.t('site_settings.invitations.test_invitation_help', { email: currentUserEmail }) }</SmallMutedText>
+          </div>
+        </div>
+      </form>
+      <br />
+      { successMessage ? <SuccessText>{ successMessage }</SuccessText> : null }
+      { errorMessage ? <DangerText>{ errorMessage }</DangerText> : null }
+    </Box>
+
+
+    <Box customClass="pastInvitationsBox">
+      <h2>{ I18n.t('site_settings.invitations.past_invitations_title') }</h2>
+
+      <ul className="filterInvitationsNav">
+        <li className="nav-item">
+          <a onClick={() => setFilter('all')} className={`nav-link${filter === 'all' ? ' active' : ''}`}>
+            {I18n.t('site_settings.invitations.all')}
+            &nbsp;
+            ({invitations && invitations.length})
+          </a>
+        </li>
+        <li className="nav-item">
+          <a onClick={() => setFilter('pending')} className={`nav-link${filter === 'pending' ? ' active' : ''}`}>
+            {I18n.t('site_settings.invitations.pending')}
+            &nbsp;
+            ({pendingInvitations && pendingInvitations.length})
+          </a>
+        </li>
+        <li className="nav-item">
+          <a onClick={() => setFilter('accepted')} className={`nav-link${filter === 'accepted' ? ' active' : ''}`}>
+            {I18n.t('site_settings.invitations.accepted')}
+            &nbsp;
+            ({acceptedInvitations && acceptedInvitations.length})
+          </a>
+        </li>
+      </ul>
+
+      <ul className="invitationsList">
+        {
+          invitationsToDisplay.map((invitation, i) => (
+            <li key={i} className="invitationListItem">
+              <div className="invitationUserInfo">
+                <Gravatar email={invitation.email} size={42} className="gravatar userGravatar" />
+                <span className="invitationEmail">{ invitation.email }</span>
+              </div>
+
+              <div className="invitationInfo">
+                {
+                  invitation.accepted_at ?
+                    <span className="invitationAcceptedAt" title={invitation.accepted_at}>
+                      { I18n.t('site_settings.invitations.accepted_at', { when: friendlyDate(invitation.accepted_at) }) }
+                    </span>
+                  :
+                    <span className="invitationSentAt" title={invitation.updated_at}>
+                      { I18n.t('site_settings.invitations.sent_at', { when: friendlyDate(invitation.updated_at) }) }
+                    </span>
+                }
+              </div>
+            </li>
+          ))
+        }
+      </ul>
+    </Box>
+    </>
+  );
+};
+
+export default Invitations;

app/javascript/helpers/regex.ts

@@ -0,0 +1,5 @@
+import { EMAIL_REGEX } from "../constants/regex";
+
+export const isValidEmail = (email: string): boolean => {
+  return EMAIL_REGEX.test(email);
+};

app/javascript/interfaces/IInvitation.ts

@@ -0,0 +1,7 @@
+interface IInvitation {
+  email: string;
+  updated_at: string;
+  accepted_at?: string;
+}
+
+export default IInvitation;

app/mailers/invitation_mailer.rb

@@ -0,0 +1,10 @@
+class InvitationMailer < ApplicationMailer
+  def invite(to:, subject:, body:)
+    @body = body
+
+    mail(
+      to: to,
+      subject: subject
+    )
+  end
+end

app/models/invitation.rb

@@ -0,0 +1,3 @@
+class Invitation < ApplicationRecord
+  include TenantOwnable
+end

app/views/devise/registrations/new.html.erb

@@ -4,7 +4,7 @@
 
     <%= render "devise/shared/error_messages", resource: resource %>
 
-    <% unless Current.tenant.tenant_setting.email_registration_policy == "none_allowed" %>
+    <% if Current.tenant.tenant_setting.email_registration_policy != "none_allowed" || (params[:email].present? && params[:invitation_token].present?) %>
       <div class="form-group">
         <%= f.label :full_name, class: "sr-only" %>
         <%= f.text_field :full_name,
@@ -19,7 +19,10 @@
           autocomplete: "email",
           placeholder: t('common.forms.auth.email'),
           required: true,
-          class: "form-control" %>
+          class: "form-control",
+          value: params[:email],
+          readonly: params[:email].present?,
+          tabindex: (params[:email].present? ? -1 : nil) %>
       </div>
 
       <div class="form-group">
@@ -38,6 +41,10 @@
           class: "form-control" %>
       </div>
 
+      <% if params[:invitation_token].present? %>
+        <%= f.hidden_field :invitation_token, value: params[:invitation_token] %>
+      <% end %>
+
       <div class="actions">
         <%= f.submit t('common.forms.auth.sign_up'), class: "btnPrimary btn-block" %>
       </div>

app/views/invitation_mailer/invite.html.erb

@@ -0,0 +1 @@
+<%= @body %>

app/views/site_settings/_menu.html.erb

@@ -8,6 +8,7 @@
       <%= render 'shared/sidebar_menu_link', label: t('site_settings.menu.boards'), path: site_settings_boards_path %>
       <%= render 'shared/sidebar_menu_link', label: t('site_settings.menu.post_statuses'), path: site_settings_post_statuses_path %>
       <%= render 'shared/sidebar_menu_link', label: t('site_settings.menu.roadmap'), path: site_settings_roadmap_path %>
+      <%= render 'shared/sidebar_menu_link', label: t('site_settings.menu.invitations'), path: site_settings_invitations_path %>
       <%= render 'shared/sidebar_menu_link', label: t('site_settings.menu.appearance'), path: site_settings_appearance_path %>
     </div>
   </div>

app/views/site_settings/invitations.html.erb

@@ -0,0 +1,16 @@
+<div class="twoColumnsContainer">
+  <%= render 'menu' %>
+  <div>
+    <%=
+      react_component(
+        'SiteSettings/Invitations',
+        {
+          siteName: Current.tenant.site_name,
+          invitations: @invitations,
+          currentUserEmail: current_user.email,
+          authenticityToken: form_authenticity_token
+        }
+      )
+    %>
+  </div>
+</div>

config/locales/en.yml

@@ -167,10 +167,11 @@ en:
     menu:
       title: 'Site settings'
       general: 'General'
+      authentication: 'Authentication'
       boards: 'Boards'
       post_statuses: 'Statuses'
       roadmap: 'Roadmap'
-      authentication: 'Authentication'
+      invitations: 'Invitations'
       appearance: 'Appearance'
     info_box:
       up_to_date: 'All changes saved'
@@ -216,6 +217,40 @@ en:
       title2: 'Not in roadmap'
       empty: 'The roadmap is empty.'
       help: 'You can add statuses to the roadmap by dragging them from the section below. If you instead want to create a new status or change their order, go to Site settings > Statuses.'
+    invitations:
+      new_invitations_title: 'New invitations'
+      past_invitations_title: 'Invitations'
+      to: 'Send invitations to'
+      to_help: 'Email addresses of people you want to invite, separated by commas.'
+      subject: 'Email subject'
+      subject_default: 'We value your feedback! Join us in shaping %{name}!'
+      body: 'Email body'
+      body_default: |
+        Hello!
+        
+        We truly appreciate your experience with %{name} and would love to hear your feedback. Your insights help us improve and continue delivering the best possible service.
+        
+        Click the link below to share your thoughts and make your voice heard:
+        
+        %link%
+
+        Have a great day!
+      send:
+        one: 'Send invitation'
+        other: 'Send %{count} invitations'
+      submit_success: 'Invitations sent!'
+      submit_failure: 'An error occurred while sending invitations'
+      invalid_emails: 'Invalid email addresses: %{emails}'
+      too_many_emails: 'You can only send %{count} invitations at a time.'
+      invitation_link_not_found: 'You must use the %link% placeholder in the email body'
+      test_invitation_button: 'Test send invitation'
+      test_invitation_help: 'This will send a test invitation email to %{email}'
+      test_invitation_success: 'A test invitation email has been sent to %{email}'
+      all: 'All'
+      pending: 'Pending'
+      accepted: 'Accepted'
+      sent_at: 'Sent %{when}'
+      accepted_at: 'Accepted %{when}'
     appearance:
       title: 'Appearance'
       learn_more: 'Learn how to customize appearance'

config/routes.rb

@@ -66,6 +66,9 @@ Rails.application.routes.draw do
     resources :post_statuses, only: [:index, :create, :update, :destroy] do
       patch 'update_order', on: :collection
     end
+
+    resources :invitations, only: [:create]
+    post '/invitations/test', to: 'invitations#test', as: :invitation_test
   
     namespace :site_settings do
       get 'general'
@@ -73,6 +76,7 @@ Rails.application.routes.draw do
       get 'boards'
       get 'post_statuses'
       get 'roadmap'
+      get 'invitations'
       get 'appearance'
     end
 

db/migrate/20240902151945_create_invitations.rb

@@ -0,0 +1,14 @@
+class CreateInvitations < ActiveRecord::Migration[6.1]
+  def change
+    create_table :invitations do |t|
+      t.string :email, null: false
+      t.string :token_digest, null: false
+      t.datetime :accepted_at
+      t.references :tenant, null: false, foreign_key: true
+
+      t.timestamps
+
+      t.index [:email, :tenant_id], unique: true
+    end
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2024_08_21_133530) do
+ActiveRecord::Schema.define(version: 2024_09_02_151945) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -55,6 +55,17 @@ ActiveRecord::Schema.define(version: 2024_08_21_133530) do
     t.index ["user_id"], name: "index_follows_on_user_id"
   end
 
+  create_table "invitations", force: :cascade do |t|
+    t.string "email", null: false
+    t.string "token_digest", null: false
+    t.datetime "accepted_at"
+    t.bigint "tenant_id", null: false
+    t.datetime "created_at", precision: 6, null: false
+    t.datetime "updated_at", precision: 6, null: false
+    t.index ["email", "tenant_id"], name: "index_invitations_on_email_and_tenant_id", unique: true
+    t.index ["tenant_id"], name: "index_invitations_on_tenant_id"
+  end
+
   create_table "likes", force: :cascade do |t|
     t.bigint "user_id", null: false
     t.bigint "post_id", null: false
@@ -224,6 +235,7 @@ ActiveRecord::Schema.define(version: 2024_08_21_133530) do
   add_foreign_key "follows", "posts"
   add_foreign_key "follows", "tenants"
   add_foreign_key "follows", "users"
+  add_foreign_key "invitations", "tenants"
   add_foreign_key "likes", "posts"
   add_foreign_key "likes", "tenants"
   add_foreign_key "likes", "users"

spec/factories/invitations.rb

@@ -0,0 +1,8 @@
+FactoryBot.define do
+  factory :invitation do
+    sequence(:email) { |n| "user#{n}@example.com" }
+    token_digest { "my_token_digest" }
+    accepted_at { "2024-09-02 15:19:45" }
+    tenant
+  end
+end

spec/mailers/previews/invitation_mailer_preview.rb

@@ -0,0 +1,13 @@
+# Preview all emails at http://localhost:3000/rails/mailers/invitation_mailer
+
+class InvitationMailerPreview < ActionMailer::Preview
+  def initialize(params={})
+    super(params)
+
+    Current.tenant = Tenant.first
+  end
+
+  def invite
+    InvitationMailer.invite(to: 'test@example.com', subject: 'Invitation', body: 'Invitation body')
+  end
+end

spec/models/invitation_spec.rb

@@ -0,0 +1,9 @@
+require 'rails_helper'
+
+RSpec.describe Invitation, type: :model do
+  let(:invitation) { FactoryBot.build(:invitation) }
+
+  it 'has a valid factory' do
+    expect(invitation).to be_valid
+  end
+end