web/lib/django/core/management/commands/dumpdata.py
changeset 0 0d40e90630ef
child 29 cc9b7e14412b
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/lib/django/core/management/commands/dumpdata.py	Wed Jan 20 00:34:04 2010 +0100
@@ -0,0 +1,84 @@
+from django.core.exceptions import ImproperlyConfigured
+from django.core.management.base import BaseCommand, CommandError
+from django.core import serializers
+from django.utils.datastructures import SortedDict
+
+from optparse import make_option
+
+class Command(BaseCommand):
+    option_list = BaseCommand.option_list + (
+        make_option('--format', default='json', dest='format',
+            help='Specifies the output serialization format for fixtures.'),
+        make_option('--indent', default=None, dest='indent', type='int',
+            help='Specifies the indent level to use when pretty-printing output'),
+        make_option('-e', '--exclude', dest='exclude',action='append', default=[],
+            help='App to exclude (use multiple --exclude to exclude multiple apps).'),
+    )
+    help = 'Output the contents of the database as a fixture of the given format.'
+    args = '[appname ...]'
+
+    def handle(self, *app_labels, **options):
+        from django.db.models import get_app, get_apps, get_models, get_model
+
+        format = options.get('format','json')
+        indent = options.get('indent',None)
+        exclude = options.get('exclude',[])
+        show_traceback = options.get('traceback', False)
+
+        excluded_apps = [get_app(app_label) for app_label in exclude]
+
+        if len(app_labels) == 0:
+            app_list = SortedDict([(app, None) for app in get_apps() if app not in excluded_apps])
+        else:
+            app_list = SortedDict()
+            for label in app_labels:
+                try:
+                    app_label, model_label = label.split('.')
+                    try:
+                        app = get_app(app_label)
+                    except ImproperlyConfigured:
+                        raise CommandError("Unknown application: %s" % app_label)
+
+                    model = get_model(app_label, model_label)
+                    if model is None:
+                        raise CommandError("Unknown model: %s.%s" % (app_label, model_label))
+
+                    if app in app_list.keys():
+                        if app_list[app] and model not in app_list[app]:
+                            app_list[app].append(model)
+                    else:
+                        app_list[app] = [model]
+                except ValueError:
+                    # This is just an app - no model qualifier
+                    app_label = label
+                    try:
+                        app = get_app(app_label)
+                    except ImproperlyConfigured:
+                        raise CommandError("Unknown application: %s" % app_label)
+                    app_list[app] = None
+
+        # Check that the serialization format exists; this is a shortcut to
+        # avoid collating all the objects and _then_ failing.
+        if format not in serializers.get_public_serializer_formats():
+            raise CommandError("Unknown serialization format: %s" % format)
+
+        try:
+            serializers.get_serializer(format)
+        except KeyError:
+            raise CommandError("Unknown serialization format: %s" % format)
+
+        objects = []
+        for app, model_list in app_list.items():
+            if model_list is None:
+                model_list = get_models(app)
+
+            for model in model_list:
+                if not model._meta.proxy:
+                    objects.extend(model._default_manager.all())
+
+        try:
+            return serializers.serialize(format, objects, indent=indent)
+        except Exception, e:
+            if show_traceback:
+                raise
+            raise CommandError("Unable to serialize database: %s" % e)