diff options
Diffstat (limited to 'django/db/backends/postgresql/operations.py')
| -rw-r--r-- | django/db/backends/postgresql/operations.py | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/django/db/backends/postgresql/operations.py b/django/db/backends/postgresql/operations.py index 4c32c4eeb1..9f36596ace 100644 --- a/django/db/backends/postgresql/operations.py +++ b/django/db/backends/postgresql/operations.py @@ -4,8 +4,17 @@ from django.db.backends import BaseDatabaseOperations # used by both the 'postgresql' and 'postgresql_psycopg2' backends. class DatabaseOperations(BaseDatabaseOperations): - def __init__(self, postgres_version=None): - self.postgres_version = postgres_version + def __init__(self): + self._postgres_version = None + + def _get_postgres_version(self): + if self._postgres_version is None: + from django.db import connection + cursor = connection.cursor() + cursor.execute("SELECT version()") + self._postgres_version = [int(val) for val in cursor.fetchone()[0].split()[1].split('.')] + return self._postgres_version + postgres_version = property(_get_postgres_version) def date_extract_sql(self, lookup_type, field_name): # http://www.postgresql.org/docs/8.0/static/functions-datetime.html#FUNCTIONS-DATETIME-EXTRACT @@ -92,4 +101,4 @@ class DatabaseOperations(BaseDatabaseOperations): style.SQL_KEYWORD('IS NOT'), style.SQL_KEYWORD('FROM'), style.SQL_TABLE(f.m2m_db_table()))) - return output
\ No newline at end of file + return output |