TandoorRecipes/cookbook/filters.py
2021-08-31 14:58:38 -05:00

82 lines
3.0 KiB
Python

import django_filters
from django.conf import settings
from django.contrib.postgres.search import TrigramSimilarity
from django.db.models import Q
from django.utils.translation import gettext as _
from django_scopes import scopes_disabled
from cookbook.forms import MultiSelectWidget
from cookbook.models import Food, Keyword, Recipe, ShoppingList
with scopes_disabled():
class RecipeFilter(django_filters.FilterSet):
name = django_filters.CharFilter(method='filter_name')
keywords = django_filters.ModelMultipleChoiceFilter(
queryset=Keyword.objects.none(),
widget=MultiSelectWidget,
method='filter_keywords'
)
foods = django_filters.ModelMultipleChoiceFilter(
queryset=Food.objects.none(),
widget=MultiSelectWidget,
method='filter_foods',
label=_('Ingredients')
)
def __init__(self, data=None, *args, **kwargs):
space = kwargs.pop('space')
super().__init__(data, *args, **kwargs)
self.filters['foods'].queryset = Food.objects.filter(space=space).all()
self.filters['keywords'].queryset = Keyword.objects.filter(space=space).all()
@staticmethod
def filter_keywords(queryset, name, value):
if not name == 'keywords':
return queryset
for x in value:
queryset = queryset.filter(keywords=x)
return queryset
@staticmethod
def filter_foods(queryset, name, value):
if not name == 'foods':
return queryset
for x in value:
queryset = queryset.filter(steps__ingredients__food__name=x).distinct()
return queryset
@staticmethod
def filter_name(queryset, name, value):
if not name == 'name':
return queryset
if settings.DATABASES['default']['ENGINE'] in ['django.db.backends.postgresql_psycopg2',
'django.db.backends.postgresql']:
queryset = queryset.annotate(similarity=TrigramSimilarity('name', value), ).filter(
Q(similarity__gt=0.1) | Q(name__unaccent__icontains=value)).order_by('-similarity')
else:
queryset = queryset.filter(name__icontains=value)
return queryset
class Meta:
model = Recipe
fields = ['name', 'keywords', 'foods', 'internal']
class FoodFilter(django_filters.FilterSet):
name = django_filters.CharFilter(lookup_expr='icontains')
class Meta:
model = Food
fields = ['name']
class ShoppingListFilter(django_filters.FilterSet):
def __init__(self, data=None, *args, **kwargs):
if data is not None:
data = data.copy()
data.setdefault("finished", False)
super().__init__(data, *args, **kwargs)
class Meta:
model = ShoppingList
fields = ['finished']