#74 Add Handle to Events

app/controllers/events_controller.rb

@@ -84,6 +84,6 @@ def set_event
 
  # Only allow a list of trusted parameters through.
  def event_params
- params.require(:event).permit(:name, :description, :start_at, :end_at)
+ params.require(:event).permit(:name, :handle, :description, :start_at, :end_at)
  end
 end

app/models/event.rb

@@ -6,6 +6,9 @@ class Event < ApplicationRecord
  has_many :attendees, through: :event_attendees, source: :profile
 
  validates :start_at, :end_at, presence: true
+ validates :handle, presence: true,
+ format: { with: /\A[a-zA-Z0-9]+\z/, message: "Only letters and numbers are allowed" },
+ uniqueness: { case_sensitive: true }
 
  scope :ongoing_or_upcoming, -> { where("end_at >= ?", Time.zone.now) }
 

app/views/events/_form.html.erb

@@ -3,6 +3,7 @@
  <%= render "layouts/errors", resource: @event %>
 
  <%= form.labelled_text_field :name %>
+ <%= form.labelled_text_field :handle %>
  <%= form.labelled_text_area :description %>
  <div class="field">
  <label class="label">Date</label>

db/migrate/20211017005416_add_index_to_events.rb

@@ -0,0 +1,10 @@
+# frozen_string_literal: true
+
+# Add a handle column to events table.
+# Add index and unique to handle attribute in the events table.
+class AddIndexToEvents < ActiveRecord::Migration[6.1]
+ def change
+ add_column :events, :handle, :string
+ add_index :events, :handle, unique: true
+ end
+end

spec/factories/events.rb

@@ -3,18 +3,21 @@
 FactoryBot.define do
  factory :event do
  name { "RubyConf" }
+ sequence(:handle) { |n| "RubyConf#{n}" }
  description { "[RubyConf 2020](https://rubyconf.org/) will be held in `Denver`." }
  start_at { "2021-11-08 00:00:00" }
  end_at { "2021-11-10 00:00:00" }
 
  trait :one_day do
  name { "HexDevs Open-Source" }
+ sequence(:handle) { |n| "HexDevs#{n}" }
  start_at { "2021-08-05 21:00:00" }
  end_at { "2021-08-05 23:59:00" }
  end
 
  trait :past_event do
  name { "PastConf" }
+ sequence(:handle) { |n| "PastConf#{n}" }
  description { "The conference you always miss by a few days." }
  start_at { 3.days.ago }
  end_at { 1.day.ago }