1 files changed, 3 insertions, 7 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb
index 271a6848ee..2bb2557efd 100644
--- a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb
@@ -478,7 +478,7 @@ module ActiveRecord
       def initialize(connection, logger, connection_parameters, config)
         super(connection, logger)
 
-        if config.fetch(:prepared_statements) { true }
+        if self.class.type_cast_config_to_boolean(config.fetch(:prepared_statements) { true })
           @visitor = Arel::Visitors::PostgreSQL.new self
         else
           @visitor = BindSubstitution.new self
@@ -492,7 +492,7 @@ module ActiveRecord
 
         connect
         @statements = StatementPool.new @connection,
-                                        config.fetch(:statement_limit) { 1000 }
+                                        self.class.type_cast_config_to_integer(config.fetch(:statement_limit) { 1000 })
 
         if postgresql_version < 80200
           raise "Your version of PostgreSQL (#{postgresql_version}) is too old, please upgrade!"
@@ -500,7 +500,7 @@ module ActiveRecord
 
         initialize_type_map
         @local_tz = execute('SHOW TIME ZONE', 'SCHEMA').first["TimeZone"]
-        @use_insert_returning = @config.key?(:insert_returning) ? @config[:insert_returning] : true
+        @use_insert_returning = @config.key?(:insert_returning) ? self.class.type_cast_config_to_boolean(@config[:insert_returning]) : true
       end
 
       # Clears the prepared statements cache.
@@ -887,10 +887,6 @@ module ActiveRecord
         def table_definition
           TableDefinition.new(self)
         end
-
-        def valid_type?(type)
-          !native_database_types[type].nil?
-        end
     end
   end
 end