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Major refactoring of django.core.management -- it's now a package rather than a 1730-line single module. All django-admin/manage.py commands are now stored in separate modules. This is backwards-incompatible for people who used django.core.management functions directly
git-svn-id: http://code.djangoproject.com/svn/django/trunk@5898 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Adrian Holovaty
129
django/core/management/commands/syncdb.py
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129
django/core/management/commands/syncdb.py
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from django.core.management.base import BaseCommand
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from django.core.management.color import no_style
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try:
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set
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except NameError:
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from sets import Set as set # Python 2.3 fallback
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class Command(BaseCommand):
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help = "Create the database tables for all apps in INSTALLED_APPS whose tables haven't already been created."
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args = '[--verbosity] [--noinput]'
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def handle(self, **options):
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from django.db import backend, connection, transaction, models
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from django.conf import settings
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from django.core.management.sql import table_list, installed_models, sql_model_create, sql_for_pending_references, many_to_many_sql_for_model, custom_sql_for_model, sql_indexes_for_model, emit_post_sync_signal
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verbosity = int(options.get('verbosity', 1))
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interactive = options.get('interactive')
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self.style = no_style()
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# Import the 'management' module within each installed app, to register
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# dispatcher events.
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for app_name in settings.INSTALLED_APPS:
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try:
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__import__(app_name + '.management', {}, {}, [''])
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except ImportError:
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pass
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cursor = connection.cursor()
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# Get a list of all existing database tables,
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# so we know what needs to be added.
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table_list = table_list()
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if backend.uses_case_insensitive_names:
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table_name_converter = str.upper
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else:
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table_name_converter = lambda x: x
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# Get a list of already installed *models* so that references work right.
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seen_models = installed_models(table_list)
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created_models = set()
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pending_references = {}
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# Create the tables for each model
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for app in models.get_apps():
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app_name = app.__name__.split('.')[-2]
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model_list = models.get_models(app)
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for model in model_list:
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# Create the model's database table, if it doesn't already exist.
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if verbosity >= 2:
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print "Processing %s.%s model" % (app_name, model._meta.object_name)
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if table_name_converter(model._meta.db_table) in table_list:
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continue
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sql, references = sql_model_create(model, self.style, seen_models)
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seen_models.add(model)
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created_models.add(model)
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for refto, refs in references.items():
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pending_references.setdefault(refto, []).extend(refs)
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sql.extend(sql_for_pending_references(model, self.style, pending_references))
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if verbosity >= 1:
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print "Creating table %s" % model._meta.db_table
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for statement in sql:
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cursor.execute(statement)
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table_list.append(table_name_converter(model._meta.db_table))
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# Create the m2m tables. This must be done after all tables have been created
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# to ensure that all referred tables will exist.
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for app in models.get_apps():
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app_name = app.__name__.split('.')[-2]
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model_list = models.get_models(app)
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for model in model_list:
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if model in created_models:
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sql = many_to_many_sql_for_model(model, self.style)
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if sql:
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if verbosity >= 2:
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print "Creating many-to-many tables for %s.%s model" % (app_name, model._meta.object_name)
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for statement in sql:
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cursor.execute(statement)
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transaction.commit_unless_managed()
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# Send the post_syncdb signal, so individual apps can do whatever they need
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# to do at this point.
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emit_post_sync_signal(created_models, verbosity, interactive)
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# Install custom SQL for the app (but only if this
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# is a model we've just created)
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for app in models.get_apps():
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app_name = app.__name__.split('.')[-2]
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for model in models.get_models(app):
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if model in created_models:
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custom_sql = custom_sql_for_model(model)
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if custom_sql:
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if verbosity >= 1:
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print "Installing custom SQL for %s.%s model" % (app_name, model._meta.object_name)
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try:
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for sql in custom_sql:
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cursor.execute(sql)
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except Exception, e:
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sys.stderr.write("Failed to install custom SQL for %s.%s model: %s" % \
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(app_name, model._meta.object_name, e))
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transaction.rollback_unless_managed()
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else:
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transaction.commit_unless_managed()
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# Install SQL indicies for all newly created models
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for app in models.get_apps():
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app_name = app.__name__.split('.')[-2]
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for model in models.get_models(app):
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if model in created_models:
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index_sql = sql_indexes_for_model(model, self.style)
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if index_sql:
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if verbosity >= 1:
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print "Installing index for %s.%s model" % (app_name, model._meta.object_name)
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try:
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for sql in index_sql:
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cursor.execute(sql)
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except Exception, e:
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sys.stderr.write("Failed to install index for %s.%s model: %s" % \
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(app_name, model._meta.object_name, e))
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transaction.rollback_unless_managed()
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else:
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transaction.commit_unless_managed()
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# Install the 'initialdata' fixture, using format discovery
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from django.core.management import call_command
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call_command('loaddata', 'initial_data', **options)
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