sankalp
0268bcfe98
drop DRF and django-filter to make django_nepkit framework‑agnostic, simplify dependencies, and align with v0.2.2 breaking change.
73 lines
2.5 KiB
Python
73 lines
2.5 KiB
Python
import threading
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from django.conf import settings
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DEFAULTS = {
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"DEFAULT_LANGUAGE": "en",
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"DATE_INPUT_FORMATS": ["%Y-%m-%d", "%d/%m/%Y", "%d-%m-%Y"],
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"TIME_INPUT_FORMATS": ["%H:%M:%S", "%H:%M", "%I:%M %p", "%I:%M:%S %p"],
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"ADMIN_DATEPICKER": True,
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"TIME_FORMAT": 12,
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"BS_DATE_FORMAT": "%Y-%m-%d",
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"BS_DATETIME_FORMAT": "%Y-%m-%d %H:%M:%S",
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"BS_TIME_FORMAT": "%I:%M %p",
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}
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class NepkitSettings:
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"""
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Lazy NEPKIT settings accessor.
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Settings are re-read from ``settings.NEPKIT`` on **every** attribute
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access so that ``override_settings`` and ``setting_changed`` are honoured
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in tests and runtime.
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When constructed with an explicit ``user_settings`` dict (e.g. in unit
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tests that instantiate ``NepkitSettings(...)`` directly), that dict is
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used verbatim and the live ``settings.NEPKIT`` is ignored. The
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module-level ``nepkit_settings`` instance below does *not* pass
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``user_settings``, so it always reflects the project's current
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``NEPKIT`` setting.
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"""
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def __init__(self, user_settings=None, defaults=None):
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self._explicit_user_settings = user_settings
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self.defaults = defaults or DEFAULTS
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# Lock only used when ``user_settings`` is None — the live case
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# uses ``getattr(settings, ...)`` which is already thread-safe.
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self._lock = threading.Lock()
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def _user_settings(self):
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if self._explicit_user_settings is not None:
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return self._explicit_user_settings
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return getattr(settings, "NEPKIT", {}) or {}
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def __getattr__(self, attr):
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# Avoid intercepting dunder / private lookups (copy, deepcopy, etc.)
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if attr.startswith("_") or attr in {
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"choices",
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"does_not_exist",
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}:
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raise AttributeError(attr)
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if attr not in self.defaults:
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raise AttributeError(f"Invalid NEPKIT setting: '{attr}'")
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try:
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with self._lock:
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user = self._user_settings()
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val = user[attr]
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except (KeyError, AttributeError, TypeError):
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val = self.defaults[attr]
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return val
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def __setattr__(self, attr, value):
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if attr.startswith("_") or attr == "defaults":
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super().__setattr__(attr, value)
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else:
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raise AttributeError(
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f"NepkitSettings is read-only; to override {attr!r} set "
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f"settings.NEPKIT['{attr}'] = {value!r}"
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)
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nepkit_settings = NepkitSettings(defaults=DEFAULTS)
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