TandoorRecipes/cookbook/filters.py
2019-12-08 17:42:12 +01:00

42 lines
1.5 KiB
Python

import django_filters
from django.contrib.postgres.search import TrigramSimilarity
from django.db.models import Q
from cookbook.forms import MultiSelectWidget
from cookbook.models import Recipe, Keyword
class RecipeFilter(django_filters.FilterSet):
name = django_filters.CharFilter(method='filter_name')
keywords = django_filters.ModelMultipleChoiceFilter(queryset=Keyword.objects.all(), widget=MultiSelectWidget,
method='filter_keywords')
@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_name(queryset, name, value):
if not name == 'name':
return queryset
queryset = Recipe.objects.annotate(similarity=TrigramSimilarity('name', value), ).filter(Q(similarity__gt=1) | Q(name__icontains=value)).order_by('-similarity')
return queryset
class Meta:
model = Recipe
fields = ['name', 'keywords']
class QuickRecipeFilter(django_filters.FilterSet):
name = django_filters.CharFilter(lookup_expr='contains')
keywords = django_filters.ModelMultipleChoiceFilter(queryset=Keyword.objects.all(), widget=MultiSelectWidget,
method='filter_keywords')
class Meta:
model = Recipe
fields = ['name', 'keywords']