import json from collections import Counter from datetime import date, timedelta from django.contrib.postgres.search import SearchQuery, SearchRank, SearchVector, TrigramSimilarity from django.core.cache import caches from django.db.models import Avg, Case, Count, F, Func, Max, OuterRef, Q, Subquery, Sum, Value, When from django.db.models.functions import Coalesce, Lower, Substr from django.utils import timezone, translation from django.utils.translation import gettext as _ from cookbook.filters import RecipeFilter from cookbook.helper.HelperFunctions import Round, str2bool from cookbook.helper.permission_helper import has_group_permission from cookbook.managers import DICTIONARY from cookbook.models import (CookLog, CustomFilter, Food, Keyword, Recipe, SearchFields, SearchPreference, ViewLog) from recipes import settings # TODO create extensive tests to make sure ORs ANDs and various filters, sorting, etc work as expected # TODO consider creating a simpleListRecipe API that only includes minimum of recipe info and minimal filtering class RecipeSearch(): _postgres = settings.DATABASES['default']['ENGINE'] in ['django.db.backends.postgresql_psycopg2', 'django.db.backends.postgresql'] def __init__(self, request, **params): self._request = request self._queryset = None if f := params.get('filter', None): filter = CustomFilter.objects.filter(id=f, space=self._request.space).filter(Q(created_by=self._request.user) | Q(shared=self._request.user)).first() if filter: self._params = {**json.loads(filter.search)} self._original_params = {**(params or {})} else: self._params = {**(params or {})} else: self._params = {**(params or {})} if self._request.user.is_authenticated: self._search_prefs = request.user.searchpreference else: self._search_prefs = SearchPreference() self._string = params.get('query').strip() if params.get('query', None) else None self._rating = self._params.get('rating', None) self._keywords = { 'or': self._params.get('keywords_or', None) or self._params.get('keywords', None), 'and': self._params.get('keywords_and', None), 'or_not': self._params.get('keywords_or_not', None), 'and_not': self._params.get('keywords_and_not', None) } self._foods = { 'or': self._params.get('foods_or', None) or self._params.get('foods', None), 'and': self._params.get('foods_and', None), 'or_not': self._params.get('foods_or_not', None), 'and_not': self._params.get('foods_and_not', None) } self._books = { 'or': self._params.get('books_or', None) or self._params.get('books', None), 'and': self._params.get('books_and', None), 'or_not': self._params.get('books_or_not', None), 'and_not': self._params.get('books_and_not', None) } self._steps = self._params.get('steps', None) self._units = self._params.get('units', None) # TODO add created by # TODO image exists self._sort_order = self._params.get('sort_order', None) self._internal = str2bool(self._params.get('internal', None)) self._random = str2bool(self._params.get('random', False)) self._new = str2bool(self._params.get('new', False)) self._num_recent = int(self._params.get('num_recent', 0)) self._include_children = str2bool(self._params.get('include_children', None)) self._timescooked = self._params.get('timescooked', None) self._cookedon = self._params.get('cookedon', None) self._createdon = self._params.get('createdon', None) self._updatedon = self._params.get('updatedon', None) self._viewedon = self._params.get('viewedon', None) # this supports hidden feature to find recipes missing X ingredients try: self._makenow = int(makenow := self._params.get('makenow', None)) except (ValueError, TypeError): if str2bool(makenow): self._makenow = 0 else: self._makenow = None self._search_type = self._search_prefs.search or 'plain' if self._string: self._unaccent_include = self._search_prefs.unaccent.values_list('field', flat=True) self._icontains_include = [x + '__unaccent' if x in self._unaccent_include else x for x in self._search_prefs.icontains.values_list('field', flat=True)] self._istartswith_include = [x + '__unaccent' if x in self._unaccent_include else x for x in self._search_prefs.istartswith.values_list('field', flat=True)] self._trigram_include = None self._fulltext_include = None self._trigram = False if self._postgres and self._string: self._language = DICTIONARY.get(translation.get_language(), 'simple') self._trigram_include = [x + '__unaccent' if x in self._unaccent_include else x for x in self._search_prefs.trigram.values_list('field', flat=True)] self._fulltext_include = self._search_prefs.fulltext.values_list('field', flat=True) or None if self._search_type not in ['websearch', 'raw'] and self._trigram_include: self._trigram = True self.search_query = SearchQuery( self._string, search_type=self._search_type, config=self._language, ) self.search_rank = None self.orderby = [] self._default_sort = ['-favorite'] # TODO add user setting self._filters = None self._fuzzy_match = None def get_queryset(self, queryset): self._queryset = queryset self._build_sort_order() self._recently_viewed(num_recent=self._num_recent) self._cooked_on_filter(cooked_date=self._cookedon) self._created_on_filter(created_date=self._createdon) self._updated_on_filter(updated_date=self._updatedon) self._viewed_on_filter(viewed_date=self._viewedon) self._favorite_recipes(timescooked=self._timescooked) self._new_recipes() self.keyword_filters(**self._keywords) self.food_filters(**self._foods) self.book_filters(**self._books) self.rating_filter(rating=self._rating) self.internal_filter(internal=self._internal) self.step_filters(steps=self._steps) self.unit_filters(units=self._units) self._makenow_filter(missing=self._makenow) self.string_filters(string=self._string) return self._queryset.filter(space=self._request.space).distinct().order_by(*self.orderby) def _sort_includes(self, *args): for x in args: if x in self.orderby: return True elif '-' + x in self.orderby: return True return False def _build_sort_order(self): if self._random: self._queryset = self._queryset.order_by("?") else: order = [] # TODO add userpreference for default sort order and replace '-favorite' default_order = ['-favorite'] # recent and new_recipe are always first; they float a few recipes to the top if self._num_recent: order += ['-recent'] if self._new: order += ['-new_recipe'] # if a sort order is provided by user - use that order if self._sort_order: if not isinstance(self._sort_order, list): order += [self._sort_order] else: order += self._sort_order if not self._postgres or not self._string: if 'score' in order: order.remove('score') if '-score' in order: order.remove('-score') # if no sort order provided prioritize text search, followed by the default search elif self._postgres and self._string and (self._trigram or self._fulltext_include): order += ['-score', *default_order] # otherwise sort by the remaining order_by attributes or favorite by default else: order += default_order order[:] = [Lower('name').asc() if x == 'name' else x for x in order] order[:] = [Lower('name').desc() if x == '-name' else x for x in order] self.orderby = order def string_filters(self, string=None): if not string: return self.build_text_filters(self._string) if self._postgres: self.build_fulltext_filters(self._string) self.build_trigram(self._string) query_filter = Q() if self._filters: for f in self._filters: query_filter |= f self._queryset = self._queryset.filter(query_filter).distinct() # this creates duplicate records which can screw up other aggregates, see makenow for workaround if self._fulltext_include: if self._fuzzy_match is None: self._queryset = self._queryset.annotate(score=Coalesce(Max(self.search_rank), 0.0)) else: self._queryset = self._queryset.annotate(rank=Coalesce(Max(self.search_rank), 0.0)) if self._fuzzy_match is not None: simularity = self._fuzzy_match.filter(pk=OuterRef('pk')).values('simularity') if not self._fulltext_include: self._queryset = self._queryset.annotate(score=Coalesce(Subquery(simularity), 0.0)) else: self._queryset = self._queryset.annotate(simularity=Coalesce(Subquery(simularity), 0.0)) if self._sort_includes('score') and self._fulltext_include and self._fuzzy_match is not None: self._queryset = self._queryset.annotate(score=Sum(F('rank')+F('simularity'))) else: query_filter = Q() for f in [x + '__unaccent__iexact' if x in self._unaccent_include else x + '__iexact' for x in SearchFields.objects.all().values_list('field', flat=True)]: query_filter |= Q(**{"%s" % f: self._string}) self._queryset = self._queryset.filter(query_filter).distinct() def _cooked_on_filter(self, cooked_date=None): if self._sort_includes('lastcooked') or cooked_date: longTimeAgo = timezone.now() - timedelta(days=100000) self._queryset = self._queryset.annotate(lastcooked=Coalesce( Max(Case(When(cooklog__created_by=self._request.user, cooklog__space=self._request.space, then='cooklog__created_at'))), Value(longTimeAgo))) if cooked_date is None: return lessthan = '-' in cooked_date[:1] cooked_date = date(*[int(x) for x in cooked_date.split('-') if x != '']) if lessthan: self._queryset = self._queryset.filter(lastcooked__date__lte=cooked_date).exclude(lastcooked=longTimeAgo) else: self._queryset = self._queryset.filter(lastcooked__date__gte=cooked_date).exclude(lastcooked=longTimeAgo) def _created_on_filter(self, created_date=None): if created_date is None: return lessthan = '-' in created_date[:1] created_date = date(*[int(x) for x in created_date.split('-') if x != '']) if lessthan: self._queryset = self._queryset.filter(created_at__date__lte=created_date) else: self._queryset = self._queryset.filter(created_at__date__gte=created_date) def _updated_on_filter(self, updated_date=None): if updated_date is None: return lessthan = '-' in updated_date[:1] updated_date = date(*[int(x) for x in updated_date.split('-') if x != '']) if lessthan: self._queryset = self._queryset.filter(updated_at__date__lte=updated_date) else: self._queryset = self._queryset.filter(updated_at__date__gte=updated_date) def _viewed_on_filter(self, viewed_date=None): if self._sort_includes('lastviewed') or viewed_date: longTimeAgo = timezone.now() - timedelta(days=100000) self._queryset = self._queryset.annotate(lastviewed=Coalesce( Max(Case(When(viewlog__created_by=self._request.user, viewlog__space=self._request.space, then='viewlog__created_at'))), Value(longTimeAgo))) if viewed_date is None: return lessthan = '-' in viewed_date[:1] viewed_date = date(*[int(x) for x in viewed_date.split('-') if x != '']) if lessthan: self._queryset = self._queryset.filter(lastviewed__date__lte=viewed_date).exclude(lastviewed=longTimeAgo) else: self._queryset = self._queryset.filter(lastviewed__date__gte=viewed_date).exclude(lastviewed=longTimeAgo) def _new_recipes(self, new_days=7): # TODO make new days a user-setting if not self._new: return self._queryset = ( self._queryset.annotate(new_recipe=Case( When(created_at__gte=(timezone.now() - timedelta(days=new_days)), then=('pk')), default=Value(0), )) ) def _recently_viewed(self, num_recent=None): if not num_recent: if self._sort_includes('lastviewed'): self._queryset = self._queryset.annotate(lastviewed=Coalesce( Max(Case(When(viewlog__created_by=self._request.user, viewlog__space=self._request.space, then='viewlog__pk'))), Value(0))) return num_recent_recipes = ViewLog.objects.filter(created_by=self._request.user, space=self._request.space).values( 'recipe').annotate(recent=Max('created_at')).order_by('-recent')[:num_recent] self._queryset = self._queryset.annotate(recent=Coalesce(Max(Case(When(pk__in=num_recent_recipes.values('recipe'), then='viewlog__pk'))), Value(0))) def _favorite_recipes(self, timescooked=None): if self._sort_includes('favorite') or timescooked: favorite_recipes = CookLog.objects.filter(created_by=self._request.user, space=self._request.space, recipe=OuterRef('pk') ).values('recipe').annotate(count=Count('pk', distinct=True)).values('count') self._queryset = self._queryset.annotate(favorite=Coalesce(Subquery(favorite_recipes), 0)) if timescooked is None: return lessthan = '-' in timescooked if timescooked == '0': self._queryset = self._queryset.filter(favorite=0) elif lessthan: self._queryset = self._queryset.filter(favorite__lte=int(timescooked[1:])).exclude(favorite=0) else: self._queryset = self._queryset.filter(favorite__gte=int(timescooked)) def keyword_filters(self, **kwargs): if all([kwargs[x] is None for x in kwargs]): return for kw_filter in kwargs: if not kwargs[kw_filter]: continue if not isinstance(kwargs[kw_filter], list): kwargs[kw_filter] = [kwargs[kw_filter]] keywords = Keyword.objects.filter(pk__in=kwargs[kw_filter]) if 'or' in kw_filter: if self._include_children: f_or = Q(keywords__in=Keyword.include_descendants(keywords)) else: f_or = Q(keywords__in=keywords) if 'not' in kw_filter: self._queryset = self._queryset.exclude(f_or) else: self._queryset = self._queryset.filter(f_or) elif 'and' in kw_filter: recipes = Recipe.objects.all() for kw in keywords: if self._include_children: f_and = Q(keywords__in=kw.get_descendants_and_self()) else: f_and = Q(keywords=kw) if 'not' in kw_filter: recipes = recipes.filter(f_and) else: self._queryset = self._queryset.filter(f_and) if 'not' in kw_filter: self._queryset = self._queryset.exclude(id__in=recipes.values('id')) def food_filters(self, **kwargs): if all([kwargs[x] is None for x in kwargs]): return for fd_filter in kwargs: if not kwargs[fd_filter]: continue if not isinstance(kwargs[fd_filter], list): kwargs[fd_filter] = [kwargs[fd_filter]] foods = Food.objects.filter(pk__in=kwargs[fd_filter]) if 'or' in fd_filter: if self._include_children: f_or = Q(steps__ingredients__food__in=Food.include_descendants(foods)) else: f_or = Q(steps__ingredients__food__in=foods) if 'not' in fd_filter: self._queryset = self._queryset.exclude(f_or) else: self._queryset = self._queryset.filter(f_or) elif 'and' in fd_filter: recipes = Recipe.objects.all() for food in foods: if self._include_children: f_and = Q(steps__ingredients__food__in=food.get_descendants_and_self()) else: f_and = Q(steps__ingredients__food=food) if 'not' in fd_filter: recipes = recipes.filter(f_and) else: self._queryset = self._queryset.filter(f_and) if 'not' in fd_filter: self._queryset = self._queryset.exclude(id__in=recipes.values('id')) def unit_filters(self, units=None, operator=True): if operator != True: raise NotImplementedError if not units: return if not isinstance(units, list): units = [units] self._queryset = self._queryset.filter(steps__ingredients__unit__in=units) def rating_filter(self, rating=None): if rating or self._sort_includes('rating'): # TODO make ratings a settings user-only vs all-users self._queryset = self._queryset.annotate(rating=Round(Avg(Case(When(cooklog__created_by=self._request.user, then='cooklog__rating'), default=Value(0))))) if rating is None: return lessthan = '-' in rating if rating == '0': self._queryset = self._queryset.filter(rating=0) elif lessthan: self._queryset = self._queryset.filter(rating__lte=int(rating[1:])).exclude(rating=0) else: self._queryset = self._queryset.filter(rating__gte=int(rating)) def internal_filter(self, internal=None): if not internal: return self._queryset = self._queryset.filter(internal=internal) def book_filters(self, **kwargs): if all([kwargs[x] is None for x in kwargs]): return for bk_filter in kwargs: if not kwargs[bk_filter]: continue if not isinstance(kwargs[bk_filter], list): kwargs[bk_filter] = [kwargs[bk_filter]] if 'or' in bk_filter: f = Q(recipebookentry__book__id__in=kwargs[bk_filter]) if 'not' in bk_filter: self._queryset = self._queryset.exclude(f) else: self._queryset = self._queryset.filter(f) elif 'and' in bk_filter: recipes = Recipe.objects.all() for book in kwargs[bk_filter]: if 'not' in bk_filter: recipes = recipes.filter(recipebookentry__book__id=book) else: self._queryset = self._queryset.filter(recipebookentry__book__id=book) if 'not' in bk_filter: self._queryset = self._queryset.exclude(id__in=recipes.values('id')) def step_filters(self, steps=None, operator=True): if operator != True: raise NotImplementedError if not steps: return if not isinstance(steps, list): steps = [unistepsts] self._queryset = self._queryset.filter(steps__id__in=steps) def build_fulltext_filters(self, string=None): if not string: return if self._fulltext_include: vectors = [] rank = [] if 'name' in self._fulltext_include: vectors.append('name_search_vector') rank.append(SearchRank('name_search_vector', self.search_query, cover_density=True)) if 'description' in self._fulltext_include: vectors.append('desc_search_vector') rank.append(SearchRank('desc_search_vector', self.search_query, cover_density=True)) if 'steps__instruction' in self._fulltext_include: vectors.append('steps__search_vector') rank.append(SearchRank('steps__search_vector', self.search_query, cover_density=True)) if 'keywords__name' in self._fulltext_include: # explicitly settings unaccent on keywords and foods so that they behave the same as search_vector fields vectors.append('keywords__name__unaccent') rank.append(SearchRank('keywords__name__unaccent', self.search_query, cover_density=True)) if 'steps__ingredients__food__name' in self._fulltext_include: vectors.append('steps__ingredients__food__name__unaccent') rank.append(SearchRank('steps__ingredients__food__name', self.search_query, cover_density=True)) for r in rank: if self.search_rank is None: self.search_rank = r else: self.search_rank += r # modifying queryset will annotation creates duplicate results self._filters.append(Q(id__in=Recipe.objects.annotate(vector=SearchVector(*vectors)).filter(Q(vector=self.search_query)))) def build_text_filters(self, string=None): if not string: return if not self._filters: self._filters = [] # dynamically build array of filters that will be applied for f in self._icontains_include: self._filters += [Q(**{"%s__icontains" % f: self._string})] for f in self._istartswith_include: self._filters += [Q(**{"%s__istartswith" % f: self._string})] def build_trigram(self, string=None): if not string: return if self._trigram: trigram = None for f in self._trigram_include: if trigram: trigram += TrigramSimilarity(f, self._string) else: trigram = TrigramSimilarity(f, self._string) self._fuzzy_match = Recipe.objects.annotate(trigram=trigram).distinct( ).annotate(simularity=Max('trigram')).values('id', 'simularity').filter(simularity__gt=self._search_prefs.trigram_threshold) self._filters += [Q(pk__in=self._fuzzy_match.values('pk'))] def _makenow_filter(self, missing=None): if missing is None: return shopping_users = [*self._request.user.get_shopping_share(), self._request.user] onhand_filter = ( Q(steps__ingredients__food__onhand_users__in=shopping_users, steps__ingredients__food__ignore_shopping=False) # food onhand | Q(steps__ingredients__food__substitute__onhand_users__in=shopping_users, steps__ingredients__food__substitute__ignore_shopping=False) # or substitute food onhand | Q(steps__ingredients__food__in=self.__children_substitute_filter(shopping_users)) | Q(steps__ingredients__food__in=self.__sibling_substitute_filter(shopping_users)) ) makenow_recipes = Recipe.objects.annotate( count_food=Count('steps__ingredients__food', filter=Q(steps__ingredients__food__ignore_shopping=False, steps__ingredients__food__isnull=False), distinct=True), count_onhand=Count('pk', filter=onhand_filter) ).annotate(missingfood=F('count_food')-F('count_onhand')).filter(missingfood=missing) self._queryset = self._queryset.filter(id__in=makenow_recipes.values('id')) @staticmethod def __children_substitute_filter(shopping_users=None): children_onhand_subquery = Food.objects.filter( path__startswith=Substr(OuterRef('path'), 1, Food.steplen*OuterRef('depth')), depth__gt=OuterRef('depth'), onhand_users__in=shopping_users ).annotate(child_onhand=Count((Substr(OuterRef('path'), 1, Food.steplen*OuterRef('depth'))), distinct=True)).values('child_onhand') return Food.objects.exclude( # list of foods that are onhand and children of: foods that are not onhand and are set to use children as substitutes Q(onhand_users__in=shopping_users) | Q(ignore_shopping=True) | Q(substitute__onhand_users__in=shopping_users) ).exclude(depth=1, numchild=0).filter(substitute_children=True ).annotate(child_onhand=Coalesce(Subquery(children_onhand_subquery), 0)) @staticmethod def __sibling_substitute_filter(shopping_users=None): sibling_onhand_subquery = Food.objects.filter( path__startswith=Substr(OuterRef('path'), 1, Food.steplen*(OuterRef('depth')-1)), depth=OuterRef('depth'), onhand_users__in=shopping_users ).annotate(sibling_onhand=Count(Substr(OuterRef('path'), 1, Food.steplen*(OuterRef('depth')-1)), distinct=True)).values('sibling_onhand') return Food.objects.exclude( # list of foods that are onhand and siblings of: foods that are not onhand and are set to use siblings as substitutes Q(onhand_users__in=shopping_users) | Q(ignore_shopping=True) | Q(substitute__onhand_users__in=shopping_users) ).exclude(depth=1, numchild=0).filter(substitute_siblings=True ).annotate(sibling_onhand=Coalesce(Subquery(sibling_onhand_subquery), 0)) class RecipeFacet(): class CacheEmpty(Exception): pass def __init__(self, request, queryset=None, hash_key=None, cache_timeout=3600): if hash_key is None and queryset is None: raise ValueError(_("One of queryset or hash_key must be provided")) self._request = request self._queryset = queryset self.hash_key = hash_key or str(hash(frozenset(self._queryset.values_list('pk')))) self._SEARCH_CACHE_KEY = f"recipes_filter_{self.hash_key}" self._cache_timeout = cache_timeout self._cache = caches['default'].get(self._SEARCH_CACHE_KEY, {}) if self._cache is None and self._queryset is None: raise self.CacheEmpty("No queryset provided and cache empty") self.Keywords = self._cache.get('Keywords', None) self.Foods = self._cache.get('Foods', None) self.Books = self._cache.get('Books', None) self.Ratings = self._cache.get('Ratings', None) # TODO Move Recent to recipe annotation/serializer: requrires change in RecipeSearch(), RecipeSearchView.vue and serializer self.Recent = self._cache.get('Recent', None) if self._queryset is not None: self._recipe_list = list(self._queryset.values_list('id', flat=True)) self._search_params = { 'keyword_list': self._request.query_params.getlist('keywords', []), 'food_list': self._request.query_params.getlist('foods', []), 'book_list': self._request.query_params.getlist('book', []), 'search_keywords_or': str2bool(self._request.query_params.get('keywords_or', True)), 'search_foods_or': str2bool(self._request.query_params.get('foods_or', True)), 'search_books_or': str2bool(self._request.query_params.get('books_or', True)), 'space': self._request.space, } elif self.hash_key is not None: self._recipe_list = self._cache.get('recipe_list', []) self._search_params = { 'keyword_list': self._cache.get('keyword_list', None), 'food_list': self._cache.get('food_list', None), 'book_list': self._cache.get('book_list', None), 'search_keywords_or': self._cache.get('search_keywords_or', None), 'search_foods_or': self._cache.get('search_foods_or', None), 'search_books_or': self._cache.get('search_books_or', None), 'space': self._cache.get('space', None), } self._cache = { **self._search_params, 'recipe_list': self._recipe_list, 'Ratings': self.Ratings, 'Recent': self.Recent, 'Keywords': self.Keywords, 'Foods': self.Foods, 'Books': self.Books } caches['default'].set(self._SEARCH_CACHE_KEY, self._cache, self._cache_timeout) def get_facets(self, from_cache=False): if from_cache: return { 'cache_key': self.hash_key or '', 'Ratings': self.Ratings or {}, 'Recent': self.Recent or [], 'Keywords': self.Keywords or [], 'Foods': self.Foods or [], 'Books': self.Books or [] } return { 'cache_key': self.hash_key, 'Ratings': self.get_ratings(), 'Recent': self.get_recent(), 'Keywords': self.get_keywords(), 'Foods': self.get_foods(), 'Books': self.get_books() } def set_cache(self, key, value): self._cache = {**self._cache, key: value} caches['default'].set( self._SEARCH_CACHE_KEY, self._cache, self._cache_timeout ) def get_books(self): if self.Books is None: self.Books = [] return self.Books def get_keywords(self): if self.Keywords is None: if self._search_params['search_keywords_or']: keywords = Keyword.objects.filter(space=self._request.space).distinct() else: keywords = Keyword.objects.filter(Q(recipe__in=self._recipe_list) | Q(depth=1)).filter(space=self._request.space).distinct() # set keywords to root objects only keywords = self._keyword_queryset(keywords) self.Keywords = [{**x, 'children': None} if x['numchild'] > 0 else x for x in list(keywords)] self.set_cache('Keywords', self.Keywords) return self.Keywords def get_foods(self): if self.Foods is None: # # if using an OR search, will annotate all keywords, otherwise, just those that appear in results if self._search_params['search_foods_or']: foods = Food.objects.filter(space=self._request.space).distinct() else: foods = Food.objects.filter(Q(ingredient__step__recipe__in=self._recipe_list) | Q(depth=1)).filter(space=self._request.space).distinct() # set keywords to root objects only foods = self._food_queryset(foods) self.Foods = [{**x, 'children': None} if x['numchild'] > 0 else x for x in list(foods)] self.set_cache('Foods', self.Foods) return self.Foods def get_books(self): if self.Books is None: self.Books = [] return self.Books def get_ratings(self): if self.Ratings is None: if not self._request.space.demo and self._request.space.show_facet_count: if self._queryset is None: self._queryset = Recipe.objects.filter(id__in=self._recipe_list) rating_qs = self._queryset.annotate(rating=Round(Avg(Case(When(cooklog__created_by=self._request.user, then='cooklog__rating'), default=Value(0))))) self.Ratings = dict(Counter(r.rating for r in rating_qs)) else: self.Rating = {} self.set_cache('Ratings', self.Ratings) return self.Ratings def get_recent(self): if self.Recent is None: # TODO make days of recent recipe a setting recent_recipes = ViewLog.objects.filter(created_by=self._request.user, space=self._request.space, created_at__gte=timezone.now() - timedelta(days=14) ).values_list('recipe__pk', flat=True) self.Recent = list(recent_recipes) self.set_cache('Recent', self.Recent) return self.Recent def add_food_children(self, id): try: food = Food.objects.get(id=id) nodes = food.get_ancestors() except Food.DoesNotExist: return self.get_facets() foods = self._food_queryset(food.get_children(), food) deep_search = self.Foods for node in nodes: index = next((i for i, x in enumerate(deep_search) if x["id"] == node.id), None) deep_search = deep_search[index]['children'] index = next((i for i, x in enumerate(deep_search) if x["id"] == food.id), None) deep_search[index]['children'] = [{**x, 'children': None} if x['numchild'] > 0 else x for x in list(foods)] self.set_cache('Foods', self.Foods) return self.get_facets() def add_keyword_children(self, id): try: keyword = Keyword.objects.get(id=id) nodes = keyword.get_ancestors() except Keyword.DoesNotExist: return self.get_facets() keywords = self._keyword_queryset(keyword.get_children(), keyword) deep_search = self.Keywords for node in nodes: index = next((i for i, x in enumerate(deep_search) if x["id"] == node.id), None) deep_search = deep_search[index]['children'] index = next((i for i, x in enumerate(deep_search) if x["id"] == keyword.id), None) deep_search[index]['children'] = [{**x, 'children': None} if x['numchild'] > 0 else x for x in list(keywords)] self.set_cache('Keywords', self.Keywords) return self.get_facets() def _recipe_count_queryset(self, field, depth=1, steplen=4): return Recipe.objects.filter(**{f'{field}__path__startswith': OuterRef('path')}, id__in=self._recipe_list, space=self._request.space ).values(child=Substr(f'{field}__path', 1, steplen*depth) ).annotate(count=Count('pk', distinct=True)).values('count') def _keyword_queryset(self, queryset, keyword=None): depth = getattr(keyword, 'depth', 0) + 1 steplen = depth * Keyword.steplen if not self._request.space.demo and self._request.space.show_facet_count: return queryset.annotate(count=Coalesce(Subquery(self._recipe_count_queryset('keywords', depth, steplen)), 0) ).filter(depth=depth, count__gt=0 ).values('id', 'name', 'count', 'numchild').order_by(Lower('name').asc())[:200] else: return queryset.filter(depth=depth).values('id', 'name', 'numchild').order_by(Lower('name').asc()) def _food_queryset(self, queryset, food=None): depth = getattr(food, 'depth', 0) + 1 steplen = depth * Food.steplen if not self._request.space.demo and self._request.space.show_facet_count: return queryset.annotate(count=Coalesce(Subquery(self._recipe_count_queryset('steps__ingredients__food', depth, steplen)), 0) ).filter(depth__lte=depth, count__gt=0 ).values('id', 'name', 'count', 'numchild').order_by(Lower('name').asc())[:200] else: return queryset.filter(depth__lte=depth).values('id', 'name', 'numchild').order_by(Lower('name').asc()) def old_search(request): if has_group_permission(request.user, ('guest',)): params = dict(request.GET) params['internal'] = None f = RecipeFilter(params, queryset=Recipe.objects.filter(space=request.user.userpreference.space).all().order_by(Lower('name').asc()), space=request.space) return f.qs