我们从Python开源项目中，提取了以下34个代码示例，用于说明如何使用django.core.serializers.get_public_serializer_formats()。
def find_fixtures(self, fixture_label): """ Finds fixture files for a given label. """ fixture_name, ser_fmt, cmp_fmt = self.parse_name(fixture_label) databases = [self.using, None] cmp_fmts = list(self.compression_formats.keys()) if cmp_fmt is None else [cmp_fmt] ser_fmts = serializers.get_public_serializer_formats() if ser_fmt is None else [ser_fmt] if self.verbosity >= 2: self.stdout.write("Loading '%s' fixtures..." % fixture_name) if os.path.isabs(fixture_name): fixture_dirs = [os.path.dirname(fixture_name)] fixture_name = os.path.basename(fixture_name) else: fixture_dirs = self.fixture_dirs if os.path.sep in os.path.normpath(fixture_name): fixture_dirs = [os.path.join(dir_, os.path.dirname(fixture_name)) for dir_ in fixture_dirs] fixture_name = os.path.basename(fixture_name) suffixes = ('.'.join(ext for ext in combo if ext) for combo in product(databases, ser_fmts, cmp_fmts)) targets = set('.'.join((fixture_name, suffix)) for suffix in suffixes) fixture_files = [] for fixture_dir in fixture_dirs: if self.verbosity >= 2: self.stdout.write("Checking %s for fixtures..." % humanize(fixture_dir)) fixture_files_in_dir = [] path = os.path.join(fixture_dir, fixture_name) for candidate in glob.iglob(glob_escape(path) + '*'): if os.path.basename(candidate) in targets: # Save the fixture_dir and fixture_name for future error messages. fixture_files_in_dir.append((candidate, fixture_dir, fixture_name)) if self.verbosity >= 2 and not fixture_files_in_dir: self.stdout.write("No fixture '%s' in %s." % (fixture_name, humanize(fixture_dir))) # Check kept for backwards-compatibility; it isn't clear why # duplicates are only allowed in different directories. if len(fixture_files_in_dir) > 1: raise CommandError( "Multiple fixtures named '%s' in %s. Aborting." % (fixture_name, humanize(fixture_dir))) fixture_files.extend(fixture_files_in_dir) if not fixture_files: # Warning kept for backwards-compatibility; why not an exception? warnings.warn("No fixture named '%s' found." % fixture_name) return fixture_files
def find_fixtures(self, fixture_label): """ Finds fixture files for a given label. """ fixture_name, ser_fmt, cmp_fmt = self.parse_name(fixture_label) databases = [self.using, None] cmp_fmts = list(self.compression_formats.keys()) if cmp_fmt is None else [cmp_fmt] ser_fmts = serializers.get_public_serializer_formats() if ser_fmt is None else [ser_fmt] if self.verbosity >= 2: self.stdout.write("Loading '%s' fixtures..." % fixture_name) if os.path.isabs(fixture_name): fixture_dirs = [os.path.dirname(fixture_name)] fixture_name = os.path.basename(fixture_name) else: fixture_dirs = self.fixture_dirs if os.path.sep in os.path.normpath(fixture_name): fixture_dirs = [os.path.join(dir_, os.path.dirname(fixture_name)) for dir_ in fixture_dirs] fixture_name = os.path.basename(fixture_name) suffixes = ( '.'.join(ext for ext in combo if ext) for combo in product(databases, ser_fmts, cmp_fmts) ) targets = set('.'.join((fixture_name, suffix)) for suffix in suffixes) fixture_files = [] for fixture_dir in fixture_dirs: if self.verbosity >= 2: self.stdout.write("Checking %s for fixtures..." % humanize(fixture_dir)) fixture_files_in_dir = [] path = os.path.join(fixture_dir, fixture_name) for candidate in glob.iglob(glob_escape(path) + '*'): if os.path.basename(candidate) in targets: # Save the fixture_dir and fixture_name for future error messages. fixture_files_in_dir.append((candidate, fixture_dir, fixture_name)) if self.verbosity >= 2 and not fixture_files_in_dir: self.stdout.write("No fixture '%s' in %s." % (fixture_name, humanize(fixture_dir))) # Check kept for backwards-compatibility; it isn't clear why # duplicates are only allowed in different directories. if len(fixture_files_in_dir) > 1: raise CommandError( "Multiple fixtures named '%s' in %s. Aborting." % (fixture_name, humanize(fixture_dir))) fixture_files.extend(fixture_files_in_dir) if not fixture_files: raise CommandError("No fixture named '%s' found." % fixture_name) return fixture_files
def loaddata(self, fixture_labels): connection = connections[self.using] # Keep a count of the installed objects and fixtures self.fixture_count = 0 self.loaded_object_count = 0 self.fixture_object_count = 0 self.models = set() self.serialization_formats = serializers.get_public_serializer_formats() # Forcing binary mode may be revisited after dropping Python 2 support (see #22399) self.compression_formats = { None: (open, 'rb'), 'gz': (gzip.GzipFile, 'rb'), 'zip': (SingleZipReader, 'r'), } if has_bz2: self.compression_formats['bz2'] = (bz2.BZ2File, 'r') with connection.constraint_checks_disabled(): for fixture_label in fixture_labels: self.load_label(fixture_label) # Since we disabled constraint checks, we must manually check for # any invalid keys that might have been added table_names = [model._meta.db_table for model in self.models] try: connection.check_constraints(table_names=table_names) except Exception as e: e.args = ("Problem installing fixtures: %s" % e,) raise # If we found even one object in a fixture, we need to reset the # database sequences. if self.loaded_object_count > 0: sequence_sql = connection.ops.sequence_reset_sql(no_style(), self.models) if sequence_sql: if self.verbosity >= 2: self.stdout.write("Resetting sequences\n") with connection.cursor() as cursor: for line in sequence_sql: cursor.execute(line) if self.verbosity >= 1: if self.fixture_count == 0 and self.hide_empty: pass elif self.fixture_object_count == self.loaded_object_count: self.stdout.write("Installed %d object(s) from %d fixture(s)" % (self.loaded_object_count, self.fixture_count)) else: self.stdout.write("Installed %d object(s) (of %d) from %d fixture(s)" % (self.loaded_object_count, self.fixture_object_count, self.fixture_count))
def find_fixtures(self, fixture_label): """ Finds fixture files for a given label. """ fixture_name, ser_fmt, cmp_fmt = self.parse_name(fixture_label) databases = [self.using, None] cmp_fmts = list(self.compression_formats.keys()) if cmp_fmt is None else [cmp_fmt] ser_fmts = serializers.get_public_serializer_formats() if ser_fmt is None else [ser_fmt] if self.verbosity >= 2: self.stdout.write("Loading '%s' fixtures..." % fixture_name) if os.path.isabs(fixture_name): fixture_dirs = [os.path.dirname(fixture_name)] fixture_name = os.path.basename(fixture_name) else: fixture_dirs = self.fixture_dirs if os.path.sep in os.path.normpath(fixture_name): fixture_dirs = [os.path.join(dir_, os.path.dirname(fixture_name)) for dir_ in fixture_dirs] fixture_name = os.path.basename(fixture_name) suffixes = ('.'.join(ext for ext in combo if ext) for combo in product(databases, ser_fmts, cmp_fmts)) targets = set('.'.join((fixture_name, suffix)) for suffix in suffixes) fixture_files = [] for fixture_dir in fixture_dirs: if self.verbosity >= 2: self.stdout.write("Checking %s for fixtures..." % humanize(fixture_dir)) fixture_files_in_dir = [] for candidate in glob.iglob(os.path.join(fixture_dir, fixture_name + '*')): if os.path.basename(candidate) in targets: # Save the fixture_dir and fixture_name for future error messages. fixture_files_in_dir.append((candidate, fixture_dir, fixture_name)) if self.verbosity >= 2 and not fixture_files_in_dir: self.stdout.write("No fixture '%s' in %s." % (fixture_name, humanize(fixture_dir))) # Check kept for backwards-compatibility; it isn't clear why # duplicates are only allowed in different directories. if len(fixture_files_in_dir) > 1: raise CommandError( "Multiple fixtures named '%s' in %s. Aborting." % (fixture_name, humanize(fixture_dir))) fixture_files.extend(fixture_files_in_dir) if fixture_name != 'initial_data' and not fixture_files: # Warning kept for backwards-compatibility; why not an exception? warnings.warn("No fixture named '%s' found." % fixture_name) elif fixture_name == 'initial_data' and fixture_files: warnings.warn( 'initial_data fixtures are deprecated. Use data migrations instead.', RemovedInDjango19Warning ) return fixture_files
def loaddata(self, fixture_labels): connection = connections[self.using] # Keep a count of the installed objects and fixtures self.fixture_count = 0 self.loaded_object_count = 0 self.fixture_object_count = 0 self.models = set() self.serialization_formats = serializers.get_public_serializer_formats() self.compression_formats = { None: open, 'gz': gzip.GzipFile, 'zip': SingleZipReader } if has_bz2: self.compression_formats['bz2'] = bz2.BZ2File with connection.constraint_checks_disabled(): for fixture_label in fixture_labels: self.load_label(fixture_label) # Since we disabled constraint checks, we must manually check for # any invalid keys that might have been added table_names = [model._meta.db_table for model in self.models] try: connection.check_constraints(table_names=table_names) except Exception as e: e.args = ("Problem installing fixtures: %s" % e,) raise # If we found even one object in a fixture, we need to reset the # database sequences. if self.loaded_object_count > 0: sequence_sql = connection.ops.sequence_reset_sql(no_style(), self.models) if sequence_sql: if self.verbosity >= 2: self.stdout.write("Resetting sequences\n") cursor = connection.cursor() for line in sequence_sql: cursor.execute(line) cursor.close() if self.verbosity >= 1: if self.fixture_object_count == self.loaded_object_count: self.stdout.write("Installed %d object(s) from %d fixture(s)" % (self.loaded_object_count, self.fixture_count)) else: self.stdout.write("Installed %d object(s) (of %d) from %d fixture(s)" % (self.loaded_object_count, self.fixture_object_count, self.fixture_count))
def _find_fixtures(self, fixture_label): """ Finds fixture files for a given label. """ fixture_name, ser_fmt, cmp_fmt = self.parse_name(fixture_label) databases = [self.using, None] cmp_fmts = list(self.compression_formats.keys()) if cmp_fmt is None else [cmp_fmt] ser_fmts = serializers.get_public_serializer_formats() if ser_fmt is None else [ser_fmt] # Check kept for backwards-compatibility; it doesn't look very useful. if '.' in os.path.basename(fixture_name): raise CommandError( "Problem installing fixture '%s': %s is not a known " "serialization format." % tuple(fixture_name.rsplit('.'))) if self.verbosity >= 2: self.stdout.write("Loading '%s' fixtures..." % fixture_name) if os.path.sep in fixture_name: fixture_dirs = [os.path.dirname(fixture_name)] fixture_name = os.path.basename(fixture_name) else: fixture_dirs = self.fixture_dirs suffixes = ('.'.join(ext for ext in combo if ext) for combo in product(databases, ser_fmts, cmp_fmts)) targets = set('.'.join((fixture_name, suffix)) for suffix in suffixes) fixture_files = [] for fixture_dir in fixture_dirs: if self.verbosity >= 2: self.stdout.write("Checking %s for fixtures..." % humanize(fixture_dir)) fixture_files_in_dir = [] for candidate in glob.iglob(os.path.join(fixture_dir, fixture_name + '*')): if os.path.basename(candidate) in targets: # Save the fixture_dir and fixture_name for future error messages. fixture_files_in_dir.append((candidate, fixture_dir, fixture_name)) if self.verbosity >= 2 and not fixture_files_in_dir: self.stdout.write("No fixture '%s' in %s." % (fixture_name, humanize(fixture_dir))) # Check kept for backwards-compatibility; it isn't clear why # duplicates are only allowed in different directories. if len(fixture_files_in_dir) > 1: raise CommandError( "Multiple fixtures named '%s' in %s. Aborting." % (fixture_name, humanize(fixture_dir))) fixture_files.extend(fixture_files_in_dir) if fixture_name != 'initial_data' and not fixture_files: # Warning kept for backwards-compatibility; why not an exception? warnings.warn("No fixture named '%s' found." % fixture_name) return fixture_files
