{"id":23816,"library":"graphql-sync-dataloaders","title":"graphql-sync-dataloaders","description":"Use DataLoaders in Python GraphQL servers that run in a synchronous context (e.g., Django). Current version 0.1.1. Infrequent releases.","status":"active","version":"0.1.1","language":"python","source_language":"en","source_url":"https://github.com/jkimbo/graphql-sync-dataloaders","tags":["graphql","dataloader","sync","django"],"install":[{"cmd":"pip install graphql-sync-dataloaders","lang":"bash","label":"Install via pip"}],"dependencies":[],"imports":[{"note":"SyncDataLoader is directly exposed from the top-level package, not a submodule.","wrong":"from graphql_sync_dataloaders.decorators import SyncDataLoader","symbol":"SyncDataLoader","correct":"from graphql_sync_dataloaders import SyncDataLoader"}],"quickstart":{"code":"from graphql_sync_dataloaders import SyncDataLoader\n\nclass UserLoader(SyncDataLoader):\n    def batch_load_fn(self, keys):\n        # keys is a list of user IDs; return list of users in same order\n        users = {user.id: user for user in User.objects.filter(id__in=keys)}\n        return [users.get(key) for key in keys]\n\nloader = UserLoader()\nuser = loader.load(1)  # Synchronous call\nusers = loader.load_many([1, 2, 3])","lang":"python","description":"Example using SyncDataLoader with Django ORM. batch_load_fn must return a list of results parallel to keys."},"warnings":[{"fix":"Always ensure batch_load_fn returns a list parallel to keys, using list comprehension or similar.","message":"SyncDataLoader.batch_load_fn must return a list of values in the exact same order as the input keys. Returning a dict and mapping may produce incorrect order.","severity":"gotcha","affected_versions":">=0.1.0"},{"fix":"Monitor the GitHub repository for new releases or consider contributing fixes.","message":"The package has no known deprecations, but it is a very small library with low activity. Check for updates before relying on it for critical production systems.","severity":"deprecated","affected_versions":">=0.1.0"}],"env_vars":null,"last_verified":"2026-05-01T00:00:00.000Z","next_check":"2026-07-30T00:00:00.000Z","problems":[{"fix":"Upgrade to latest version: pip install --upgrade graphql-sync-dataloaders. Then import: from graphql_sync_dataloaders import SyncDataLoader","cause":"Incorrect import path or outdated version; SyncDataLoader is available from version 0.1.0 onwards.","error":"ImportError: cannot import name 'SyncDataLoader' from 'graphql_sync_dataloaders'"},{"fix":"Define batch_load_fn(self, keys) as a method of your subclass. Example: class MyLoader(SyncDataLoader):\n    def batch_load_fn(self, keys):\n        return [...]","cause":"The batch_load_fn method signature expects exactly one argument (keys), but the class may not be properly subclassed or the method is defined incorrectly.","error":"TypeError: batch_load_fn() missing 1 required positional argument: 'keys'"}],"ecosystem":"pypi","meta_description":null,"install_score":null,"install_tag":null,"quickstart_score":null,"quickstart_tag":null}