Require EnterpriseRole.belongs_to by default

app/models/enterprise_role.rb

@@ -1,10 +1,11 @@
 # frozen_string_literal: true
 
 class EnterpriseRole < ApplicationRecord
+  self.belongs_to_required_by_default = true
+
   belongs_to :user, class_name: "Spree::User"
   belongs_to :enterprise
 
-  validates :user, :enterprise, presence: true
   validates :enterprise_id,
             uniqueness: { scope: :user_id, message: I18n.t(:enterprise_role_uniqueness_error) }
 

db/migrate/20230728060433_require_user_and_enterprise_on_enterprise_role.rb

@@ -0,0 +1,6 @@
+class RequireUserAndEnterpriseOnEnterpriseRole < ActiveRecord::Migration[7.0]
+  def change
+    change_column_null :enterprise_roles, :user_id, false
+    change_column_null :enterprise_roles, :enterprise_id, false
+  end
+end

db/schema.rb

@@ -175,8 +175,8 @@ ActiveRecord::Schema[7.0].define(version: 2023_08_09_201542) do
   end
 
   create_table "enterprise_roles", id: :serial, force: :cascade do |t|
-    t.integer "user_id"
-    t.integer "enterprise_id"
+    t.integer "user_id", null: false
+    t.integer "enterprise_id", null: false
     t.boolean "receives_notifications", default: false
     t.index ["enterprise_id", "user_id"], name: "index_enterprise_roles_on_enterprise_id_and_user_id", unique: true
     t.index ["enterprise_id"], name: "index_enterprise_roles_on_enterprise_id"