funkwhale/api/funkwhale_api/common/utils.py

44 wiersze
1.4 KiB
Python

import os
import shutil
from urllib.parse import parse_qs, urlencode, urlsplit, urlunsplit
from django.db import transaction
def rename_file(instance, field_name, new_name, allow_missing_file=False):
field = getattr(instance, field_name)
current_name, extension = os.path.splitext(field.name)
new_name_with_extension = "{}{}".format(new_name, extension)
try:
shutil.move(field.path, new_name_with_extension)
except FileNotFoundError:
if not allow_missing_file:
raise
print("Skipped missing file", field.path)
initial_path = os.path.dirname(field.name)
field.name = os.path.join(initial_path, new_name_with_extension)
instance.save()
return new_name_with_extension
def on_commit(f, *args, **kwargs):
return transaction.on_commit(lambda: f(*args, **kwargs))
def set_query_parameter(url, **kwargs):
"""Given a URL, set or replace a query parameter and return the
modified URL.
>>> set_query_parameter('http://example.com?foo=bar&biz=baz', 'foo', 'stuff')
'http://example.com?foo=stuff&biz=baz'
"""
scheme, netloc, path, query_string, fragment = urlsplit(url)
query_params = parse_qs(query_string)
for param_name, param_value in kwargs.items():
query_params[param_name] = [param_value]
new_query_string = urlencode(query_params, doseq=True)
return urlunsplit((scheme, netloc, path, new_query_string, fragment))