def _get_cache_key_and_model_from_datastore_key(key):
from django.db.migrations.recorder import MigrationRecorder
# The django migration model isn't registered with the app registry so this
# is special cased here
MODELS_WHICH_ARENT_REGISTERED_WITH_DJANGO = {
MigrationRecorder.Migration._meta.db_table: MigrationRecorder.Migration
}
kind = key.kind()
model = utils.get_model_from_db_table(kind)
if not model:
if kind in MODELS_WHICH_ARENT_REGISTERED_WITH_DJANGO:
model = MODELS_WHICH_ARENT_REGISTERED_WITH_DJANGO[kind]
else:
# This should never happen.. if it does then we can edit get_model_from_db_table to pass
# include_deferred=True/included_swapped=True to get_models, whichever makes it better
raise ImproperlyConfigured("Unable to locate model for db_table '{}' - are you missing an INSTALLED_APP?".format(key.kind()))
# We build the cache key for the ID of the instance
cache_key = "|".join(
[key.kind(), "{}:{}".format(model._meta.pk.column, _format_value_for_identifier(key.id_or_name()))]
)
return (cache_key, model)
def _get_cache_key_and_model_from_datastore_key(key):
from django.db.migrations.recorder import MigrationRecorder
# The django migration model isn't registered with the app registry so this
# is special cased here
MODELS_WHICH_ARENT_REGISTERED_WITH_DJANGO = {
MigrationRecorder.Migration._meta.db_table: MigrationRecorder.Migration
}
kind = key.kind()
model = utils.get_model_from_db_table(kind)
if not model:
if kind in MODELS_WHICH_ARENT_REGISTERED_WITH_DJANGO:
model = MODELS_WHICH_ARENT_REGISTERED_WITH_DJANGO[kind]
else:
# This should never happen.. if it does then we can edit get_model_from_db_table to pass
# include_deferred=True/included_swapped=True to get_models, whichever makes it better
raise ImproperlyConfigured(
"Unable to locate model for db_table '{}' - are you missing an INSTALLED_APP?"
.format(key.kind()))
# We build the cache key for the ID of the instance
cache_key = "|".join([
key.kind(),
"{}:{}".format(model._meta.pk.column,
_format_value_for_identifier(key.id_or_name()))
])
return (cache_key, model)
def _get_cache_key_and_model_from_datastore_key(key):
model = utils.get_model_from_db_table(key.kind())
if not model:
# This should never happen.. if it does then we can edit get_model_from_db_table to pass
# include_deferred=True/included_swapped=True to get_models, whichever makes it better
raise AssertionError("Unable to locate model for db_table '{}' - item won't be evicted from the cache".format(key.kind()))
# We build the cache key for the ID of the instance
cache_key = "|".join([key.kind(), "{}:{}".format(model._meta.pk.column, _format_value_for_identifier(key.id_or_name()))])
return (cache_key, model)
