Updated the model for adding unique key constrain on netid Refs #stor…

…y/16200

app/models/acknowledged_user.rb

@@ -1,3 +1,4 @@
 class AcknowledgedUser < ApplicationRecord
     has_many :acknowledgments, dependent: :destroy
+    validates :netid, presence: true, uniqueness: true
 end

config/application.rb

@@ -22,7 +22,7 @@ class Application < Rails::Application
     # These settings can be overridden in specific environments using the files
     # in config/environments, which are processed later.
     #
-    # config.time_zone = "Central Time (US & Canada)"
+    config.time_zone = 'Mountain Time (US & Canada)'
     # config.eager_load_paths << Rails.root.join("extras")
   end
 end

db/migrate/20241219195633_create_acknowledged_users.rb

@@ -1,9 +1,11 @@
 class CreateAcknowledgedUsers < ActiveRecord::Migration[7.1]
   def change
     create_table :acknowledged_users do |t|
-      t.string :netid
+      t.string :netid, null: false
 
       t.timestamps
     end
+    # Add a unique index to the netid column
+    add_index :acknowledged_users, :netid, unique: true
   end
 end