| from django.core.management.base import BaseCommand |
| from django.core.management.color import no_style |
| from optparse import make_option |
| import sys |
| import os |
| |
| try: |
| set |
| except NameError: |
| from sets import Set as set # Python 2.3 fallback |
| |
| class Command(BaseCommand): |
| option_list = BaseCommand.option_list + ( |
| make_option('--verbosity', action='store', dest='verbosity', default='1', |
| type='choice', choices=['0', '1', '2'], |
| help='Verbosity level; 0=minimal output, 1=normal output, 2=all output'), |
| ) |
| help = 'Installs the named fixture(s) in the database.' |
| args = "fixture [fixture ...]" |
| |
| def handle(self, *fixture_labels, **options): |
| from django.db.models import get_apps |
| from django.core import serializers |
| from django.db import connection, transaction |
| from django.conf import settings |
| |
| self.style = no_style() |
| |
| verbosity = int(options.get('verbosity', 1)) |
| show_traceback = options.get('traceback', False) |
| |
| # commit is a stealth option - it isn't really useful as |
| # a command line option, but it can be useful when invoking |
| # loaddata from within another script. |
| # If commit=True, loaddata will use its own transaction; |
| # if commit=False, the data load SQL will become part of |
| # the transaction in place when loaddata was invoked. |
| commit = options.get('commit', True) |
| |
| # Keep a count of the installed objects and fixtures |
| fixture_count = 0 |
| object_count = 0 |
| objects_per_fixture = [] |
| models = set() |
| |
| humanize = lambda dirname: dirname and "'%s'" % dirname or 'absolute path' |
| |
| # Get a cursor (even though we don't need one yet). This has |
| # the side effect of initializing the test database (if |
| # it isn't already initialized). |
| cursor = connection.cursor() |
| |
| # Start transaction management. All fixtures are installed in a |
| # single transaction to ensure that all references are resolved. |
| if commit: |
| transaction.commit_unless_managed() |
| transaction.enter_transaction_management() |
| transaction.managed(True) |
| |
| app_fixtures = [os.path.join(os.path.dirname(app.__file__), 'fixtures') for app in get_apps()] |
| for fixture_label in fixture_labels: |
| parts = fixture_label.split('.') |
| if len(parts) == 1: |
| fixture_name = fixture_label |
| formats = serializers.get_public_serializer_formats() |
| else: |
| fixture_name, format = '.'.join(parts[:-1]), parts[-1] |
| if format in serializers.get_public_serializer_formats(): |
| formats = [format] |
| else: |
| formats = [] |
| |
| if formats: |
| if verbosity > 1: |
| print "Loading '%s' fixtures..." % fixture_name |
| else: |
| sys.stderr.write( |
| self.style.ERROR("Problem installing fixture '%s': %s is not a known serialization format." % |
| (fixture_name, format))) |
| transaction.rollback() |
| transaction.leave_transaction_management() |
| return |
| |
| if os.path.isabs(fixture_name): |
| fixture_dirs = [fixture_name] |
| else: |
| fixture_dirs = app_fixtures + list(settings.FIXTURE_DIRS) + [''] |
| |
| for fixture_dir in fixture_dirs: |
| if verbosity > 1: |
| print "Checking %s for fixtures..." % humanize(fixture_dir) |
| |
| label_found = False |
| for format in formats: |
| serializer = serializers.get_serializer(format) |
| if verbosity > 1: |
| print "Trying %s for %s fixture '%s'..." % \ |
| (humanize(fixture_dir), format, fixture_name) |
| try: |
| full_path = os.path.join(fixture_dir, '.'.join([fixture_name, format])) |
| fixture = open(full_path, 'r') |
| if label_found: |
| fixture.close() |
| print self.style.ERROR("Multiple fixtures named '%s' in %s. Aborting." % |
| (fixture_name, humanize(fixture_dir))) |
| transaction.rollback() |
| transaction.leave_transaction_management() |
| return |
| else: |
| fixture_count += 1 |
| objects_per_fixture.append(0) |
| if verbosity > 0: |
| print "Installing %s fixture '%s' from %s." % \ |
| (format, fixture_name, humanize(fixture_dir)) |
| try: |
| objects = serializers.deserialize(format, fixture) |
| for obj in objects: |
| object_count += 1 |
| objects_per_fixture[-1] += 1 |
| models.add(obj.object.__class__) |
| obj.save() |
| label_found = True |
| except (SystemExit, KeyboardInterrupt): |
| raise |
| except Exception: |
| import traceback |
| fixture.close() |
| transaction.rollback() |
| transaction.leave_transaction_management() |
| if show_traceback: |
| import traceback |
| traceback.print_exc() |
| else: |
| sys.stderr.write( |
| self.style.ERROR("Problem installing fixture '%s': %s\n" % |
| (full_path, traceback.format_exc()))) |
| return |
| fixture.close() |
| except: |
| if verbosity > 1: |
| print "No %s fixture '%s' in %s." % \ |
| (format, fixture_name, humanize(fixture_dir)) |
| |
| |
| # If any of the fixtures we loaded contain 0 objects, assume that an |
| # error was encountered during fixture loading. |
| if 0 in objects_per_fixture: |
| sys.stderr.write( |
| self.style.ERROR("No fixture data found for '%s'. (File format may be invalid.)" % |
| (fixture_name))) |
| transaction.rollback() |
| transaction.leave_transaction_management() |
| return |
| |
| # If we found even one object in a fixture, we need to reset the |
| # database sequences. |
| if object_count > 0: |
| sequence_sql = connection.ops.sequence_reset_sql(self.style, models) |
| if sequence_sql: |
| if verbosity > 1: |
| print "Resetting sequences" |
| for line in sequence_sql: |
| cursor.execute(line) |
| |
| if commit: |
| transaction.commit() |
| transaction.leave_transaction_management() |
| |
| if object_count == 0: |
| if verbosity > 1: |
| print "No fixtures found." |
| else: |
| if verbosity > 0: |
| print "Installed %d object(s) from %d fixture(s)" % (object_count, fixture_count) |
| |
| # Close the DB connection. This is required as a workaround for an |
| # edge case in MySQL: if the same connection is used to |
| # create tables, load data, and query, the query can return |
| # incorrect results. See Django #7572, MySQL #37735. |
| if commit: |
| connection.close() |
