Require EnterpriseRelationship.belongs_to by default

app/models/enterprise_relationship.rb

@@ -1,11 +1,12 @@
 # frozen_string_literal: true
 
 class EnterpriseRelationship < ApplicationRecord
+  self.belongs_to_required_by_default = true
+
   belongs_to :parent, class_name: 'Enterprise', touch: true
   belongs_to :child, class_name: 'Enterprise', touch: true
   has_many :permissions, class_name: 'EnterpriseRelationshipPermission', dependent: :destroy
 
-  validates :parent, :child, presence: true
   validates :child_id, uniqueness: {
     scope: :parent_id,
     message: I18n.t('validation_msg_relationship_already_established')

db/migrate/20230728052532_require_parent_and_child_on_enterprise_relationship.rb

@@ -0,0 +1,6 @@
+class RequireParentAndChildOnEnterpriseRelationship < ActiveRecord::Migration[7.0]
+  def change
+    change_column_null :enterprise_relationships, :parent_id, false
+    change_column_null :enterprise_relationships, :child_id, false
+  end
+end

db/schema.rb

@@ -167,8 +167,8 @@ ActiveRecord::Schema[7.0].define(version: 2023_08_09_201542) do
   end
 
   create_table "enterprise_relationships", id: :serial, force: :cascade do |t|
-    t.integer "parent_id"
-    t.integer "child_id"
+    t.integer "parent_id", null: false
+    t.integer "child_id", null: false
     t.index ["child_id"], name: "index_enterprise_relationships_on_child_id"
     t.index ["parent_id", "child_id"], name: "index_enterprise_relationships_on_parent_id_and_child_id", unique: true
     t.index ["parent_id"], name: "index_enterprise_relationships_on_parent_id"