cleaner caching function

This commit is contained in:
vabene1111
2023-02-26 08:49:44 +01:00
parent 1efcf386e2
commit fcf861f5eb
2 changed files with 40 additions and 18 deletions

View File

@ -7,6 +7,7 @@ from html import escape
from smtplib import SMTPException
from django.contrib.auth.models import Group, User, AnonymousUser
from django.core.cache import caches
from django.core.mail import send_mail
from django.db.models import Avg, Q, QuerySet, Sum
from django.http import BadHeaderError
@ -103,15 +104,17 @@ class CustomOnHandField(serializers.Field):
return instance
def to_representation(self, obj):
shared_users = None
if request := self.context.get('request', None):
shared_users = getattr(request, '_shared_users', None)
if shared_users is None:
shared_users = []
if c := caches['default'].get(f'shopping_shared_users_{self.context["request"].space.id}_{self.context["request"].user.id}', None):
shared_users = c
else:
try:
shared_users = [x.id for x in list(self.context['request'].user.get_shopping_share())] + [
self.context['request'].user.id]
caches['default'].set(f'shopping_shared_users_{self.context["request"].space.id}_{self.context["request"].user.id}', shared_users, timeout=5*60)
# TODO ugly hack that improves API performance significantly, should be done properly
except AttributeError: # Anonymous users (using share links) don't have shared users
shared_users = []
pass
return obj.onhand_users.filter(id__in=shared_users).exists()
def to_internal_value(self, data):
@ -278,11 +281,12 @@ class SpaceSerializer(WritableNestedModelSerializer):
class Meta:
model = Space
fields = (
'id', 'name', 'created_by', 'created_at', 'message', 'max_recipes', 'max_file_storage_mb', 'max_users',
'allow_sharing', 'demo', 'food_inherit', 'show_facet_count', 'user_count', 'recipe_count', 'file_size_mb',
'image', 'use_plural',)
'id', 'name', 'created_by', 'created_at', 'message', 'max_recipes', 'max_file_storage_mb', 'max_users',
'allow_sharing', 'demo', 'food_inherit', 'show_facet_count', 'user_count', 'recipe_count', 'file_size_mb',
'image', 'use_plural',)
read_only_fields = (
'id', 'created_by', 'created_at', 'max_recipes', 'max_file_storage_mb', 'max_users', 'allow_sharing', 'demo',)
'id', 'created_by', 'created_at', 'max_recipes', 'max_file_storage_mb', 'max_users', 'allow_sharing',
'demo',)
class UserSpaceSerializer(WritableNestedModelSerializer):
@ -531,15 +535,20 @@ class FoodSerializer(UniqueFieldsMixin, WritableNestedModelSerializer, ExtendedR
images = ['recipe__image']
def get_substitute_onhand(self, obj):
shared_users = None
if request := self.context.get('request', None):
shared_users = getattr(request, '_shared_users', None)
if shared_users is None:
shared_users = []
if c := caches['default'].get(
f'shopping_shared_users_{self.context["request"].space.id}_{self.context["request"].user.id}', None):
shared_users = c
else:
try:
shared_users = [x.id for x in list(self.context['request'].user.get_shopping_share())] + [
self.context['request'].user.id]
except AttributeError:
shared_users = []
caches['default'].set(
f'shopping_shared_users_{self.context["request"].space.id}_{self.context["request"].user.id}',
shared_users, timeout=5 * 60)
# TODO ugly hack that improves API performance significantly, should be done properly
except AttributeError: # Anonymous users (using share links) don't have shared users
pass
filter = Q(id__in=obj.substitute.all())
if obj.substitute_siblings:
filter |= Q(path__startswith=obj.path[:Food.steplen * (obj.depth - 1)], depth=obj.depth)
@ -630,7 +639,7 @@ class IngredientSimpleSerializer(WritableNestedModelSerializer):
used_in = []
for s in obj.step_set.all():
for r in s.recipe_set.all():
used_in.append({'id':r.id,'name':r.name})
used_in.append({'id': r.id, 'name': r.name})
return used_in
def get_conversions(self, obj):