Clear schema cache when a table is created/dropped/renamed

Otherwise `Model.table_exists?` returns the staled cache result.

1 files changed, 3 insertions, 0 deletions

diff --git a/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb b/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb
index 40c5e51d92..0062952667 100644
--- a/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb
+++ b/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb
@@ -55,6 +55,7 @@ module ActiveRecord
         end
 
         def drop_table(table_name, options = {}) # :nodoc:
+          schema_cache.clear_data_source_cache!(table_name.to_s)
           execute "DROP TABLE#{' IF EXISTS' if options[:if_exists]} #{quote_table_name(table_name)}#{' CASCADE' if options[:force] == :cascade}"
         end
 
@@ -376,6 +377,8 @@ module ActiveRecord
         #   rename_table('octopuses', 'octopi')
         def rename_table(table_name, new_name)
           clear_cache!
+          schema_cache.clear_data_source_cache!(table_name.to_s)
+          schema_cache.clear_data_source_cache!(new_name.to_s)
           execute "ALTER TABLE #{quote_table_name(table_name)} RENAME TO #{quote_table_name(new_name)}"
           pk, seq = pk_and_sequence_for(new_name)
           if pk