Respect `ignore_tables` in Postgres structure dump

When using `sql` as the schema format, or even just doing `rake
db:structure:dump`, it would be good to respect the list of ignored
tables that has been configured.

2 files changed, 14 insertions, 0 deletions

diff --git a/activerecord/lib/active_record/tasks/postgresql_database_tasks.rb b/activerecord/lib/active_record/tasks/postgresql_database_tasks.rb
index f1af90c1e8..7f1a768d8b 100644
--- a/activerecord/lib/active_record/tasks/postgresql_database_tasks.rb
+++ b/activerecord/lib/active_record/tasks/postgresql_database_tasks.rb
@@ -66,6 +66,12 @@ module ActiveRecord
             "--schema=#{part.strip}"
           end
         end
+
+        ignore_tables = ActiveRecord::SchemaDumper.ignore_tables
+        if ignore_tables.any?
+          args += ignore_tables.flat_map { |table| ["-T", table] }
+        end
+
         args << configuration["database"]
         run_cmd("pg_dump", args, "dumping")
         remove_sql_header_comments(filename)
diff --git a/activerecord/test/cases/tasks/postgresql_rake_test.rb b/activerecord/test/cases/tasks/postgresql_rake_test.rb
index 512388af6b..a2e968aedf 100644
--- a/activerecord/test/cases/tasks/postgresql_rake_test.rb
+++ b/activerecord/test/cases/tasks/postgresql_rake_test.rb
@@ -259,6 +259,14 @@ if current_adapter?(:PostgreSQLAdapter)
         end
       end
 
+      def test_structure_dump_with_ignore_tables
+        ActiveRecord::SchemaDumper.expects(:ignore_tables).returns(["foo", "bar"])
+
+        Kernel.expects(:system).with("pg_dump", "-s", "-x", "-O", "-f", @filename, "-T", "foo", "-T", "bar", "my-app-db").returns(true)
+
+        ActiveRecord::Tasks::DatabaseTasks.structure_dump(@configuration, @filename)
+      end
+
       def test_structure_dump_with_schema_search_path
         @configuration["schema_search_path"] = "foo,bar"