fuzzy match on lookups

cookbook/forms.py

@@ -484,10 +484,11 @@ class SearchPreferenceForm(forms.ModelForm):
 
     class Meta:
         model = SearchPreference
-        fields = ('search', 'unaccent', 'icontains', 'istartswith', 'trigram', 'fulltext')
+        fields = ('search', 'lookup', 'unaccent', 'icontains', 'istartswith', 'trigram', 'fulltext')
 
         help_texts = {
             'search': _('Select type method of search.  Click <a href="/docs/search/">here</a> for full desciption of choices.'),
+            'lookup': _('Use fuzzy matching on units, keywords and ingredients when editing and importing recipes.'),
             'unaccent': _('Fields to search ignoring accents.  Selecting this option can improve or degrade search quality depending on language'),
             'icontains': _("Fields to search for partial matches.  (e.g. searching for 'Pie' will return 'pie' and 'piece' and 'soapie')"),
             'istartswith': _("Fields to search for beginning of word matches. (e.g. searching for 'sa' will return 'salad' and 'sandwich')"),
@@ -497,6 +498,7 @@ class SearchPreferenceForm(forms.ModelForm):
 
         labels = {
             'search': _('Search Method'),
+            'lookup': _('Fuzzy Lookups'),
             'unaccent': _('Ignore Accent'),
             'icontains': _("Partial Match"),
             'istartswith': _("Starts Wtih"),

cookbook/migrations/0124_build_full_text_index.py

@@ -95,7 +95,8 @@ class Migration(migrations.Migration):
             name='SearchPreference',
             fields=[
                 ('user', annoying.fields.AutoOneToOneField(on_delete=deletion.CASCADE, primary_key=True, serialize=False, to='auth.user')),
-                ('search', models.CharField(choices=[('plain', 'Plain'), ('phrase', 'Phrase'), ('websearch', 'Web'), ('raw', 'Raw')], default='plain', max_length=32)),
+                ('search', models.CharField(choices=[('plain', 'Simple'), ('phrase', 'Phrase'), ('websearch', 'Web'), ('raw', 'Raw')], default='plain', max_length=32)),
+                ('lookup', models.BooleanField(default=False)),
                 ('fulltext', models.ManyToManyField(blank=True, related_name='fulltext_fields', to='cookbook.SearchFields')),
                 ('icontains', models.ManyToManyField(blank=True, default=nameSearchField, related_name='icontains_fields', to='cookbook.SearchFields')),
                 ('istartswith', models.ManyToManyField(blank=True, related_name='istartswith_fields', to='cookbook.SearchFields')),

cookbook/models.py

@@ -763,6 +763,7 @@ class SearchPreference(models.Model, PermissionModelMixin):
     user = AutoOneToOneField(User, on_delete=models.CASCADE, primary_key=True)
     search = models.CharField(choices=SEARCH_STYLE, max_length=32, default=SIMPLE)
 
+    lookup = models.BooleanField(default=False)
     unaccent = models.ManyToManyField(SearchFields, related_name="unaccent_fields", blank=True, default=allSearchFields)
     icontains = models.ManyToManyField(SearchFields, related_name="icontains_fields", blank=True, default=nameSearchField)
     istartswith = models.ManyToManyField(SearchFields, related_name="istartswith_fields", blank=True)

cookbook/templates/settings.html

@@ -180,5 +180,15 @@
             token.select();
             document.execCommand("copy");
         }
+        // Javascript to enable link to tab
+        var hash = location.hash.replace(/^#/, '');  // ^ means starting, meaning only match the first hash
+        if (hash) {
+            $('.nav-tabs a[href="#' + hash + '"]').tab('show');
+        } 
+
+        // Change hash for page-reload
+        $('.nav-tabs a').on('shown.bs.tab', function (e) {
+            window.location.hash = e.target.hash;
+        })
     </script>
 {% endblock %}

cookbook/views/api.py

@@ -9,6 +9,7 @@ from annoying.decorators import ajax_request
 from annoying.functions import get_object_or_None
 from django.contrib import messages
 from django.contrib.auth.models import User
+from django.contrib.postgres.search import TrigramSimilarity
 from django.core.exceptions import FieldError, ValidationError
 from django.core.files import File
 from django.db.models import Q
@@ -86,6 +87,38 @@ class StandardFilterMixin(ViewSetMixin):
         return queryset
 
 
+class FuzzyFilterMixin(ViewSetMixin):
+
+    def get_queryset(self):
+        queryset = self.queryset
+        query = self.request.query_params.get('query', None)
+        fuzzy = self.request.user.searchpreference.lookup
+
+        if query is not None or query != '':
+            if fuzzy:
+                queryset = queryset.annotate(trigram=TrigramSimilarity('name', query)).filter(trigram__gt=0.2).order_by("-trigram")
+            else:
+                # TODO have this check unaccent search settings?
+                queryset = queryset.filter(name__icontains=query)
+
+        updated_at = self.request.query_params.get('updated_at', None)
+        if updated_at is not None:
+            try:
+                queryset = queryset.filter(updated_at__gte=updated_at)
+            except FieldError:
+                pass
+            except ValidationError:
+                raise APIException(_('Parameter updated_at incorrectly formatted'))
+
+        limit = self.request.query_params.get('limit', None)
+        random = self.request.query_params.get('random', False)
+        if limit is not None:
+            if random:
+                queryset = queryset.order_by("?")
+            queryset = queryset[:int(limit)]
+        return queryset
+
+
 class UserNameViewSet(viewsets.ReadOnlyModelViewSet):
     """
     list:
@@ -157,17 +190,7 @@ class SupermarketViewSet(viewsets.ModelViewSet, StandardFilterMixin):
         return super().get_queryset()
 
 
-class SupermarketCategoryViewSet(viewsets.ModelViewSet, StandardFilterMixin):
-    queryset = SupermarketCategory.objects
-    serializer_class = SupermarketCategorySerializer
-    permission_classes = [CustomIsUser]
-
-    def get_queryset(self):
-        self.queryset = self.queryset.filter(space=self.request.space)
-        return super().get_queryset()
-
-
-class KeywordViewSet(viewsets.ModelViewSet, StandardFilterMixin):
+class KeywordViewSet(viewsets.ModelViewSet, FuzzyFilterMixin):
     """
        list:
        optional parameters
@@ -185,7 +208,7 @@ class KeywordViewSet(viewsets.ModelViewSet, StandardFilterMixin):
         return super().get_queryset()
 
 
-class UnitViewSet(viewsets.ModelViewSet, StandardFilterMixin):
+class UnitViewSet(viewsets.ModelViewSet, FuzzyFilterMixin):
     queryset = Unit.objects
     serializer_class = UnitSerializer
     permission_classes = [CustomIsUser]
@@ -195,7 +218,7 @@ class UnitViewSet(viewsets.ModelViewSet, StandardFilterMixin):
         return super().get_queryset()
 
 
-class FoodViewSet(viewsets.ModelViewSet, StandardFilterMixin):
+class FoodViewSet(viewsets.ModelViewSet, FuzzyFilterMixin):
     queryset = Food.objects
     serializer_class = FoodSerializer
     permission_classes = [CustomIsUser]

cookbook/views/views.py

@@ -33,7 +33,6 @@ from cookbook.models import (Comment, CookLog, InviteLink, MealPlan,
 from cookbook.tables import (CookLogTable, RecipeTable, RecipeTableSmall,
                              ViewLogTable)
 from cookbook.views.data import Object
-from recipes import settings
 from recipes.settings import DEMO
 from recipes.version import BUILD_REF, VERSION_NUMBER
 
@@ -361,6 +360,7 @@ def user_settings(request):
                     search_error = True
                 else:
                     sp.search = search_form.cleaned_data['search']
+                    sp.lookup = search_form.cleaned_data['lookup']
                     sp.unaccent.set(search_form.cleaned_data['unaccent'])
                     sp.icontains.set(search_form.cleaned_data['icontains'])
                     sp.istartswith.set(search_form.cleaned_data['istartswith'])
@@ -385,6 +385,7 @@ def user_settings(request):
     # these fields require postgress - just disable them if postgress isn't available
     if not settings.DATABASES['default']['ENGINE'] in ['django.db.backends.postgresql_psycopg2', 'django.db.backends.postgresql']:
         search_form.fields['search'].disabled = True
+        search_form.fields['lookup'].disabled = True
         search_form.fields['trigram'].disabled = True
         search_form.fields['fulltext'].disabled = True
 

vue/src/apps/RecipeSearchView/RecipeSearchView.vue

@@ -92,7 +92,7 @@
                     </div>
                     <div class="row" style="margin-top: 1vh">
                       <div class="col-12">
-                        <a :href="resolveDjangoUrl('view_settings')">{{ $t('Advanced Search Settings') }}</a>
+                        <a :href="resolveDjangoUrl('view_settings') + '#search'">{{ $t('Advanced Search Settings') }}</a>
                       </div>
                     </div>
                     <div class="row" style="margin-top: 1vh">