X-Git-Url: https://git.openstreetmap.org./osqa.git/blobdiff_plain/b80d47e7da6ac90a56b9705089f246a8050ee364..b03fbe3fb080bdcec16778e981c61c67ec7e3bac:/forum/settings/base.py diff --git a/forum/settings/base.py b/forum/settings/base.py index dc01577..cc706bc 100644 --- a/forum/settings/base.py +++ b/forum/settings/base.py @@ -1,140 +1,126 @@ import django.dispatch -from django.utils.encoding import force_unicode +from django.utils.encoding import force_unicode, smart_unicode +from datetime import datetime, timedelta +import logging + +TMP_MINICACHE_SECONDS = 5 class SettingSet(list): - def __init__(self, name, title, description, weight=1000, markdown=False): + def __init__(self, name, title, description, weight=1000, markdown=False, can_preview=False): self.name = name self.title = title self.description = description self.weight = weight self.markdown = markdown + self.can_preview = can_preview + class BaseSetting(object): - def __init__(self, name, default, field_context): + @classmethod + def add_to_class(cls, name): + def wrapper(self, *args, **kwargs): + return self.value.__getattribute__(name)(*args, **kwargs) + + setattr(cls, name, wrapper) + + def __init__(self, name, default, set=None, field_context=None): self.name = name self.default = default - self.field_context = field_context + self.field_context = field_context or {} + + self._temp = None + + if set is not None: + self.set = set + + if not set.name in Setting.sets: + Setting.sets[set.name] = set + + Setting.sets[set.name].append(self) + + def __str__(self): + return str(self.value) + + def __unicode__(self): + return smart_unicode(self.value) @property def value(self): + if self._temp: + v, exp = self._temp + if exp + timedelta(seconds=TMP_MINICACHE_SECONDS) > datetime.now(): + return v + from forum.models import KeyValue try: kv = KeyValue.objects.get(key=self.name) - except: - kv = KeyValue(key=self.name, value=self._parse(self.default)) - kv.save() - - return kv.value + v = kv.value + self._temp = (v, datetime.now() + timedelta(seconds=TMP_MINICACHE_SECONDS)) + return v + except KeyValue.DoesNotExist: + self._temp = (self.default, datetime.now() + timedelta(seconds=TMP_MINICACHE_SECONDS)) + self.save(self.default) + except Exception, e: + logging.error("Error retrieving setting from database (%s): %s" % (self.name, str(e))) + + return self.default def set_value(self, new_value): new_value = self._parse(new_value) + self._temp = None + self.save(new_value) + + def save(self, value): from forum.models import KeyValue try: kv = KeyValue.objects.get(key=self.name) - old_value = kv.value - except: + except KeyValue.DoesNotExist: kv = KeyValue(key=self.name) - old_value = self.default + except Exception, e: + logging.error("Error saving setting to database (%s): %s" % (self.name, str(e))) + return - kv.value = new_value + kv.value = value kv.save() - setting_update.send(sender=self, old_value=old_value, new_value=new_value) - def to_default(self): self.set_value(self.default) def _parse(self, value): + if not isinstance(value, self.base_type): + try: + return self.base_type(value) + except: + pass return value - def __str__(self): - return str(self.value) - - def __unicode__(self): - return unicode(self.value) - - def __nonzero__(self): - return bool(self.value) - - -class StringSetting(BaseSetting): - def _parse(self, value): - if isinstance(value, unicode): - return value.encode('utf8') - else: - return str(value) - - def __unicode__(self): - return unicode(self.value.decode('utf8')) - - def __add__(self, other): - return "%s%s" % (unicode(self), other) - - def __cmp__(self, other): - return cmp(str(self), str(other)) - -class IntegerSetting(BaseSetting): - def _parse(self, value): - return int(value) - - def __int__(self): - return int(self.value) - - def __add__(self, other): - return int(self) + int(other) - - def __sub__(self, other): - return int(self) - int(other) - - def __cmp__(self, other): - return int(self) - int(other) - -class FloatSetting(BaseSetting): - def _parse(self, value): - return float(value) - - def __int__(self): - return int(self.value) - - def __float__(self): - return float(self.value) - - def __add__(self, other): - return float(self) + float(other) - - def __sub__(self, other): - return float(self) - float(other) - - def __cmp__(self, other): - return float(self) - float(other) +class AnyTypeSetting(BaseSetting): + def _parse(self, value): + return value -class BoolSetting(BaseSetting): - def _parse(self, value): - return bool(value) class Setting(object): + emulators = {} sets = {} - def __new__(cls, name, default, set=None, field_context={}): - if isinstance(default, bool): - instance = BoolSetting(name, default, field_context) - elif isinstance(default, str): - instance = StringSetting(name, default, field_context) - elif isinstance(default, float): - instance = FloatSetting(name, default, field_context) - elif isinstance(default, int): - instance = IntegerSetting(name, default, field_context) + def __new__(cls, name, default, set=None, field_context=None): + if default is None: + return AnyTypeSetting(name, default, set, field_context) + + deftype = type(default) + + if deftype in Setting.emulators: + emul = Setting.emulators[deftype] else: - instance = BaseSetting(name, default, field_context) + emul = type(deftype.__name__ + cls.__name__, (BaseSetting,), {'base_type': deftype}) - if set is not None: - if not set.name in cls.sets: - cls.sets[set.name] = set + fns = [n for n, f in [(p, getattr(deftype, p)) for p in dir(deftype) if not p in dir(cls)] if callable(f)] - cls.sets[set.name].append(instance) + for n in fns: + emul.add_to_class(n) - return instance + Setting.emulators[deftype] = emul -setting_update = django.dispatch.Signal(providing_args=['old_value', 'new_value']) + return emul(name, default, set, field_context)