2. Add model WebhookEndpoint [migration]

This will store the URL for each user that wants a notification.

We probably don't need URL validation (it's not done on Enterprise for example). It could be validated by browser input, and anyway will be validated if the webhook actually works or not.

Inspired by Keygen: https://keygen.sh/blog/how-to-build-a-webhook-system-in-rails-using-sidekiq/

app/models/webhook_endpoint.rb

@@ -0,0 +1,6 @@
+# frozen_string_literal: true
+
+# Records a webhook url to send notifications to
+class WebhookEndpoint < ApplicationRecord
+  validates :url, presence: true
+end

db/migrate/20221028051650_create_webhook_endpoints.rb

@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+class CreateWebhookEndpoints < ActiveRecord::Migration[6.1]
+  def change
+    create_table :webhook_endpoints do |t|
+      t.string :url, null: false
+
+      t.timestamps null: false
+    end
+  end
+end

db/schema.rb

@@ -1189,6 +1189,12 @@ ActiveRecord::Schema.define(version: 2023_02_13_160135) do
     t.index ["item_type", "item_id"], name: "index_versions_on_item_type_and_item_id"
   end
 
+  create_table "webhook_endpoints", force: :cascade do |t|
+    t.string "url", null: false
+    t.datetime "created_at", precision: 6, null: false
+    t.datetime "updated_at", precision: 6, null: false
+  end
+
   add_foreign_key "active_storage_attachments", "active_storage_blobs", column: "blob_id"
   add_foreign_key "active_storage_variant_records", "active_storage_blobs", column: "blob_id"
   add_foreign_key "adjustment_metadata", "enterprises", name: "adjustment_metadata_enterprise_id_fk"

spec/models/webhook_endpoint_spec.rb

@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe WebhookEndpoint, type: :model do
+  describe "validations" do
+    it { is_expected.to validate_presence_of(:url) }
+  end
+end