Prevent Rails 7.1 create_schema from being added to db/schema.rb (#276)

* Prevent Rails 7.1 create_schema from being added to db/schema.rb as schemas are managed by Apartment not ActiveRecord like they would be in a vanilla Rails setup.

* Need to also require the abstract superclass

* Only suppress create_schema when use_schemas = true

lib/apartment.rb

@@ -12,6 +12,10 @@
 require_relative 'apartment/active_record/schema_migration'
 require_relative 'apartment/active_record/internal_metadata'
 
+if ActiveRecord.version.release >= Gem::Version.new('7.1')
+  require_relative 'apartment/active_record/postgres/schema_dumper'
+end
+
 # Apartment main definitions
 module Apartment
   class << self

lib/apartment/active_record/postgres/schema_dumper.rb

@@ -0,0 +1,12 @@
+# This patch prevents `create_schema` from being added to db/schema.rb as schemas are managed by Apartment
+# not ActiveRecord like they would be in a vanilla Rails setup.
+
+require "active_record/connection_adapters/abstract/schema_dumper"
+require "active_record/connection_adapters/postgresql/schema_dumper"
+
+class ActiveRecord::ConnectionAdapters::PostgreSQL::SchemaDumper
+  alias_method :_original_schemas, :schemas
+  def schemas(stream)
+    _original_schemas(stream) unless Apartment.use_schemas
+  end
+end