def extract_bower_zipfile(self, zip_file, dest, expected_version=None):
        bower_json = None
        root = None
        deps_installed = []
        for info in zip_file.infolist():
            if PurePath(info.filename).name == "bower.json":
                with zip_file.open(info) as f:
                    bower_json = json.load(f)
                    root = str(PurePath(info.filename).parent)
                break
        version = bower_json["version"]
        if expected_version is not None:
            expected_version = Bower.clean_semver(expected_version)
            if not semver.match(version, expected_version):
                click.secho("error: versions do not match ({} =/= {})".format(
                    version, expected_version))
                raise InvalidPackageError
        if "dependencies" in bower_json:
            for package, version in bower_json["dependencies"].items():
                url = Bower.get_package_url(package)
                deps_installed.extend(self.get_bower_package(
                    url, dest=dest, version=version))
        ignore_patterns = [GitIgnorePattern(ig) for ig in bower_json["ignore"]]
        path_spec = PathSpec(ignore_patterns)
        namelist = [path for path in zip_file.namelist()
                    if PurePath(path).parts[0] == root]
        ignored = list(path_spec.match_files(namelist))
        for path in namelist:
            dest_path = PurePath(
                bower_json["name"],
                *PurePath(path).parts[1:])

            if path in ignored:
                continue

            for path in ignored:
                for parent in PurePath(path):
                    if parent in ignored:
                        continue

            if path.endswith("/"):
                if list(path_spec.match_files([str(dest_path)])):
                    ignored.append(PurePath(path))
                elif not (dest / dest_path).is_dir():
                    (dest / dest_path).mkdir(parents=True)
            else:
                target_path = dest / dest_path.parent / dest_path.name
                source = zip_file.open(path)
                target = target_path.open("wb")
                with source, target:
                    shutil.copyfileobj(source, target)
        deps_installed.append((bower_json["name"], bower_json["version"]))
        return deps_installed
def save(self, verbosity=1, *args, **kwargs):
        connection = connections[get_tenant_database_alias()]
        is_new = self.pk is None
        has_schema = hasattr(connection, 'schema_name')
        if has_schema and is_new and connection.schema_name != get_public_schema_name():
            raise Exception("Can't create tenant outside the public schema. "
                            "Current schema is %s." % connection.schema_name)
        elif has_schema and not is_new and connection.schema_name not in (self.schema_name, get_public_schema_name()):
            raise Exception("Can't update tenant outside it's own schema or "
                            "the public schema. Current schema is %s."
                            % connection.schema_name)

        super().save(*args, **kwargs)

        if has_schema and is_new and self.auto_create_schema:
            try:
                self.create_schema(check_if_exists=True, verbosity=verbosity)
                post_schema_sync.send(sender=TenantMixin, tenant=self.serializable_fields())
            except Exception:
                # We failed creating the tenant, delete what we created and
                # re-raise the exception
                self.delete(force_drop=True)
                raise
        elif is_new:
            # although we are not using the schema functions directly, the signal might be registered by a listener
            schema_needs_to_be_sync.send(sender=TenantMixin, tenant=self.serializable_fields())
        elif not is_new and self.auto_create_schema and not schema_exists(self.schema_name):
            # Create schemas for existing models, deleting only the schema on failure
            try:
                self.create_schema(check_if_exists=True, verbosity=verbosity)
                post_schema_sync.send(sender=TenantMixin, tenant=self.serializable_fields())
            except Exception:
                # We failed creating the schema, delete what we created and
                # re-raise the exception
                self._drop_schema()
                raise