Make Web::PushSubscription#user and Web::PushSubscription#access_token relationships non-optional (#34498)

Co-authored-by: Emelia Smith <ThisIsMissEm@users.noreply.github.com>

db/migrate/20250422083912_add_not_null_to_web_push_subscription_user.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class AddNotNullToWebPushSubscriptionUser < ActiveRecord::Migration[8.0]
+  def change
+    add_check_constraint :web_push_subscriptions, 'user_id IS NOT NULL', name: 'web_push_subscriptions_user_id_null', validate: false
+  end
+end

db/migrate/20250422084214_validate_add_not_null_to_web_push_subscription_user.rb

@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+class ValidateAddNotNullToWebPushSubscriptionUser < ActiveRecord::Migration[8.0]
+  def up
+    connection.execute(<<~SQL.squish)
+      DELETE FROM web_push_subscriptions
+      WHERE user_id IS NULL
+    SQL
+
+    validate_check_constraint :web_push_subscriptions, name: 'web_push_subscriptions_user_id_null'
+    change_column_null :web_push_subscriptions, :user_id, false
+    remove_check_constraint :web_push_subscriptions, name: 'web_push_subscriptions_user_id_null'
+  end
+
+  def down
+    add_check_constraint :web_push_subscriptions, 'user_id IS NOT NULL', name: 'web_push_subscriptions_user_id_null', validate: false
+    change_column_null :web_push_subscriptions, :user_id, true
+  end
+end

db/migrate/20250422085027_add_not_null_to_web_push_subscription_access_token.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class AddNotNullToWebPushSubscriptionAccessToken < ActiveRecord::Migration[8.0]
+  def change
+    add_check_constraint :web_push_subscriptions, 'access_token_id IS NOT NULL', name: 'web_push_subscriptions_access_token_id_null', validate: false
+  end
+end

db/migrate/20250422085303_validate_add_not_null_to_web_push_subscription_access_token.rb

@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+class ValidateAddNotNullToWebPushSubscriptionAccessToken < ActiveRecord::Migration[8.0]
+  def up
+    connection.execute(<<~SQL.squish)
+      DELETE FROM web_push_subscriptions
+      WHERE access_token_id IS NULL
+    SQL
+
+    validate_check_constraint :web_push_subscriptions, name: 'web_push_subscriptions_access_token_id_null'
+    change_column_null :web_push_subscriptions, :access_token_id, false
+    remove_check_constraint :web_push_subscriptions, name: 'web_push_subscriptions_access_token_id_null'
+  end
+
+  def down
+    add_check_constraint :web_push_subscriptions, 'access_token_id IS NOT NULL', name: 'web_push_subscriptions_access_token_id_null', validate: false
+    change_column_null :web_push_subscriptions, :access_token_id, true
+  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[8.0].define(version: 2025_04_11_095859) do
+ActiveRecord::Schema[8.0].define(version: 2025_04_22_085303) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "pg_catalog.plpgsql"
 
@@ -1237,8 +1237,8 @@ ActiveRecord::Schema[8.0].define(version: 2025_04_11_095859) do
     t.json "data"
     t.datetime "created_at", precision: nil, null: false
     t.datetime "updated_at", precision: nil, null: false
-    t.bigint "access_token_id"
-    t.bigint "user_id"
+    t.bigint "access_token_id", null: false
+    t.bigint "user_id", null: false
     t.boolean "standard", default: false, null: false
     t.index ["access_token_id"], name: "index_web_push_subscriptions_on_access_token_id", where: "(access_token_id IS NOT NULL)"
     t.index ["user_id"], name: "index_web_push_subscriptions_on_user_id"