CRUD for Events and create Event Registrations

app/controllers/event_registrations_controller.rb

@@ -0,0 +1,63 @@
+class EventRegistrationsController < ApplicationController
+
+  def create
+    @event_registration = EventRegistration.new(event_registration_params)
+    if @event_registration.save
+      redirect_to @event_registration.event, notice: 'Successfully registered for the event.'
+    else
+      redirect_to @event_registration.event, alert: "Registration failed: #{@event_registration.errors.full_messages.join(', ')}"
+    end
+  end
+
+  def bulk_create
+    event_ids = Array(params[:event_ids]).map(&:to_i).uniq
+    if event_ids.blank?
+      redirect_to events_path, alert: "Please select at least one event."
+      return
+    end
+
+    attendee_attrs = {
+      first_name: current_user.first_name || current_user.email.split('@').first,
+      last_name:  current_user.last_name || 'User',
+      email:      current_user.email
+    }
+
+    created = 0
+    errors = []
+
+    Event.transaction do
+      event_ids.each do |event_id|
+        existing_registration = EventRegistration.where(
+          event_id: event_id,
+          email: attendee_attrs[:email]
+        ).first
+
+        if existing_registration
+          errors << "Event '#{Event.find(event_id).title}': You are already registered for this event."
+          next
+        end
+
+        reg = EventRegistration.new(attendee_attrs.merge(event_id: event_id))
+        unless reg.save
+          errors << "Event '#{Event.find(event_id).title}': #{reg.errors.full_messages.to_sentence}"
+        else
+          created += 1
+        end
+      end
+
+      raise ActiveRecord::Rollback if errors.any?
+    end
+
+    if errors.any?
+      redirect_to events_path, alert: errors.join("; ")
+    else
+      redirect_to events_path, notice: "Successfully registered for #{created} event#{'s' if created != 1}."
+    end
+  end
+
+  private
+
+  def event_registration_params
+    params.require(:event_registration).permit(:event_id, :first_name, :last_name, :email)
+  end
+end

app/controllers/events_controller.rb

@@ -0,0 +1,67 @@
+class EventsController < ApplicationController
+  before_action :set_event, only: %i[ show edit update destroy ]
+  before_action :authorize_admin!, only: %i[ new edit update destroy ]
+
+  def index
+    @events = Event.all
+  end
+
+  def show
+  end
+
+  def new
+    @event = Event.new
+  end
+
+  def edit
+  end
+
+  def create
+    @event = Event.new(event_params)
+
+    respond_to do |format|
+      if @event.save
+        format.html { redirect_to @event, notice: "Event was successfully created." }
+        format.json { render :show, status: :created, location: @event }
+      else
+        format.html { render :new, status: :unprocessable_entity }
+        format.json { render json: @event.errors, status: :unprocessable_entity }
+      end
+    end
+  end
+
+  def update
+    respond_to do |format|
+      if @event.update(event_params)
+        format.html { redirect_to @event, notice: "Event was successfully updated." }
+        format.json { render :show, status: :ok, location: @event }
+      else
+        format.html { render :edit, status: :unprocessable_entity }
+        format.json { render json: @event.errors, status: :unprocessable_entity }
+      end
+    end
+  end
+
+  def destroy
+    @event.destroy
+
+    respond_to do |format|
+      format.html { redirect_to events_path, status: :see_other, notice: "Event was successfully destroyed." }
+      format.json { head :no_content }
+    end
+  end
+
+  private
+
+  def set_event
+    @event = Event.find(params[:id])
+  end
+
+  def event_params
+    params.require(:event).permit(:title, :description, :start_date, :end_date, :registration_close_date, :publicly_visible)
+  end
+
+  def authorize_admin!
+    redirect_to events_path, alert: "You are not authorized to perform this action." unless current_admin
+  end
+end

app/models/event.rb

@@ -0,0 +1,6 @@
+class Event < ApplicationRecord
+  has_many :event_registrations, dependent: :destroy
+
+  validates_presence_of :title, :start_date, :end_date
+  validates_inclusion_of :publicly_visible, in: [true, false]
+end

app/models/event_registration.rb

@@ -0,0 +1,7 @@
+class EventRegistration < ApplicationRecord
+  belongs_to :event
+
+  validates_presence_of :first_name, :last_name, :email, :event_id
+  validates_uniqueness_of :email, scope: :event_id, message: 'is already registered for this event', case_sensitive: false
+  validates_format_of :email, with: URI::MailTo::EMAIL_REGEXP
+end

app/views/events/_form.html.erb

@@ -0,0 +1,29 @@
+<%= form_for(@event) do |f| %>
+  <%= render 'shared/errors', resource: @event if @event.errors.any? %>
+
+  <div class="form-group">
+    <%= f.label :title, class: 'bold' %>
+    <%= f.text_field :title, class: 'form-control' %>  
+
+    <%= f.label :description, class: 'bold' %>
+    <%= f.text_area :description, class: 'form-control' %>
+
+    <%= f.label :start_date, class: 'bold' %>
+    <%= f.text_field :start_date, type: 'datetime-local', class: 'form-control', value: @event.start_date&.strftime('%Y-%m-%dT%H:%M') %>
+
+    <%= f.label :end_date, class: 'bold' %>
+    <%= f.text_field :end_date, type: 'datetime-local', class: 'form-control', value: @event.end_date&.strftime('%Y-%m-%dT%H:%M') %>
+
+    <%= f.label :registration_close_date, class: 'bold' %>
+    <%= f.text_field :registration_close_date, type: 'datetime-local', class: 'form-control', value: @event.registration_close_date&.strftime('%Y-%m-%dT%H:%M') %>
+
+    <div style="display: flex; align-items: center; margin-top: 10px; column-gap: 10px;">
+      <%= f.label :publicly_visible, class: 'bold' %>
+      <%= f.check_box :publicly_visible, { class: 'bold mt-0' }, '1', '0' %>
+    </div>
+  </div>
+
+  <div class="form-actions">
+    <%= f.button :submit, class: 'btn btn-primary' %>
+  </div>
+<% end %>

app/views/events/edit.html.erb

@@ -0,0 +1,6 @@
+<h1>Editing Event</h1>
+
+<%= render 'form', event: @event %>
+
+<%= link_to 'Show', @event %> |
+<%= link_to 'Back', events_path %>

app/views/events/index.html.erb

@@ -0,0 +1,60 @@
+<p id="notice"><%= notice %></p>
+
+<h1>Events</h1>
+
+<%= form_with url: bulk_create_event_registrations_path, method: :post, local: true, id: 'bulk-registration-form' do |form| %>
+  <table>
+    <thead>
+      <tr>
+        <th></th>
+        <th>Title</th>
+        <th>Start Date</th>
+        <th>End Date</th>
+        <th>Actions</th>
+      </tr>
+    </thead>
+
+    <tbody>
+      <% @events.each do |event| %>
+        <tr>
+          <td style="padding-right: 10px;">
+            <%= check_box_tag "event_ids[]", event.id, false, class: "event-checkbox" %>
+          </td>
+          <td style="padding-right: 10px;"><%= event.title %></td>
+          <td style="padding-right: 10px;"><%= event.start_date.strftime("%B %d, %Y") if event.start_date %></td>
+          <td style="padding-right: 10px;"><%= event.end_date.strftime("%B %d, %Y") if event.end_date %></td>
+          <td style="padding-right: 10px;">
+            <%= link_to 'Show', event %> |
+            <%= link_to 'Edit', edit_event_path(event) %> |
+            <%= link_to 'Destroy', event, method: :delete, data: { confirm: 'Are you sure?' } %>
+          </td>
+        </tr>
+      <% end %>
+    </tbody>
+  </table>
+
+  <br>
+
+  <div>
+    <%= form.submit "Register for Selected Events", class: "btn btn-primary", id: "register-button", disabled: true %>
+    <%= link_to 'New Event', new_event_path, class: "btn btn-primary" %>
+  </div>
+<% end %>
+
+<script>
+  document.addEventListener('DOMContentLoaded', function() {
+    const checkboxes = document.querySelectorAll('.event-checkbox');
+    const registerButton = document.getElementById('register-button');
+
+    function updateRegisterButton() {
+      const checkedBoxes = document.querySelectorAll('.event-checkbox:checked');
+      registerButton.disabled = checkedBoxes.length === 0;
+    }
+
+    checkboxes.forEach(checkbox => {
+      checkbox.addEventListener('change', updateRegisterButton);
+    });
+
+    updateRegisterButton();
+  });
+</script>

app/views/events/new.html.erb

@@ -0,0 +1,5 @@
+<h1>New Event</h1>
+
+<%= render 'form', event: @event %>
+
+<%= link_to 'Back', events_path %>

app/views/events/show.html.erb

@@ -0,0 +1,36 @@
+<p id="notice"><%= notice %></p>
+
+<h1>Event Details</h1>
+
+<p>
+    <strong>Title:</strong>
+    <%= @event.title %>
+</p>
+
+<p>
+    <strong>Description:</strong>
+    <%= @event.description %>
+</p>
+
+<p>
+    <strong>Start Date:</strong>
+    <%= @event.start_date.strftime("%B %d, %Y %I:%M %p") if @event.start_date.present? %>
+</p>
+
+<p>
+    <strong>End Date:</strong>
+    <%= @event.end_date.strftime("%B %d, %Y %I:%M %p") if @event.end_date.present? %>
+</p>
+
+<p>
+    <strong>Registration Close Date:</strong>
+    <%= @event.registration_close_date.strftime("%B %d, %Y %I:%M %p") if @event.registration_close_date.present? %>
+</p>
+
+<p>
+    <strong>Publicly Visible:</strong>
+    <%= @event.publicly_visible? ? 'Yes' : 'No' %>
+</p>
+
+<%= link_to 'Edit', edit_event_path(@event) %> |
+<%= link_to 'Back', events_path %>

config/routes.rb

@@ -45,6 +45,12 @@
   resources :workshop_log_creation_wizard
   resources :workshop_logs, only: [:show, :edit, :new, :create, :update]
 
+  resources :events
+  resources :event_registrations, only: [:create] do
+    collection do
+      post :bulk_create
+    end
+  end
   resources :resources
 
   get 'stories', to: 'resources#stories'

db/migrate/20250912133056_create_events.rb

@@ -0,0 +1,12 @@
+class CreateEvents < ActiveRecord::Migration[6.1]
+  def change
+    create_table :events do |t|
+      t.string "title"
+      t.text "description"
+      t.datetime "start_date"
+      t.datetime "end_date"
+      t.datetime "registration_close_date"
+      t.timestamps
+    end
+  end
+end

db/migrate/20250912155207_create_event_registrations.rb

@@ -0,0 +1,12 @@
+class CreateEventRegistrations < ActiveRecord::Migration[6.1]
+  def change
+    create_table :event_registrations do |t|
+      t.string :first_name
+      t.string :last_name
+      t.string :email
+      t.references :event, foreign_key: true
+
+      t.timestamps
+    end
+  end
+end

db/migrate/20250912173152_add_publicly_visible_to_events.rb

@@ -0,0 +1,5 @@
+class AddPubliclyVisibleToEvents < ActiveRecord::Migration[6.1]
+  def change
+    add_column :events, :publicly_visible, :boolean, default: false, null: false
+  end
+end