⚡ [PERF] Optimize some queries

docs/changelog.rst

@@ -20,6 +20,7 @@ CHANGELOG
 **Maintenance**
 
 - Replace deprecated `env_file` with `dotenv`
+- Optimize some backend queries for performances
 
 
 2.109.0     (2024-08-08)

geotrek/land/filters.py

@@ -63,28 +63,34 @@ class Meta(OrganismFilterSet.Meta):
 """
 
 
-class TopologyFilterPhysicalType(TopologyFilter):
+class PrefetchStructureMixin:
+    def get_queryset(self, request=None):
+        qs = super().get_queryset(request)
+        return qs.select_related('structure')
+
+
+class TopologyFilterPhysicalType(PrefetchStructureMixin, TopologyFilter):
     model = PhysicalType
 
     def values_to_edges(self, values):
         return PhysicalEdge.objects.filter(physical_type__in=values)
 
 
-class TopologyFilterCirculationType(TopologyFilter):
+class TopologyFilterCirculationType(PrefetchStructureMixin, TopologyFilter):
     model = CirculationType
 
     def values_to_edges(self, values):
         return CirculationEdge.objects.filter(circulation_type__in=values)
 
 
-class TopologyFilterAuthorizationType(TopologyFilter):
+class TopologyFilterAuthorizationType(PrefetchStructureMixin, TopologyFilter):
     model = AuthorizationType
 
     def values_to_edges(self, values):
         return CirculationEdge.objects.filter(authorization_type__in=values)
 
 
-class TopologyFilterLandType(TopologyFilter):
+class TopologyFilterLandType(PrefetchStructureMixin, TopologyFilter):
     model = LandType
 
     def values_to_edges(self, values):

geotrek/land/models.py

@@ -80,11 +80,11 @@ def physical_type_csv_display(self):
 
     @classmethod
     def path_physicals(cls, path):
-        return cls.objects.existing().select_related('physical_type').filter(aggregations__path=path).distinct('pk')
+        return cls.objects.existing().select_related('physical_type', 'physical_type__structure').filter(aggregations__path=path).distinct('pk')
 
     @classmethod
     def topology_physicals(cls, topology):
-        return cls.overlapping(topology).select_related('physical_type')
+        return cls.overlapping(topology).select_related('physical_type', 'physical_type__structure')
 
 
 @receiver(pre_delete, sender=Topology)

geotrek/outdoor/templatetags/outdoor_tags.py

@@ -44,7 +44,7 @@ def course_sites():
                 for scale in site.practice.rating_scales.all()
             },
         } if not (site.practice is None) else {'practice': None, 'types': {}, 'scales': {}}
-        for site in Site.objects.all()
+        for site in Site.objects.select_related('practice').prefetch_related('practice__course_types', 'practice__rating_scales').all()
     }
     return json.dumps(sites)
 

geotrek/tourism/filters.py

@@ -25,8 +25,8 @@ class TypeFilter(ModelMultipleChoiceFilter):
 
 
 class TouristicContentFilterSet(ZoningFilterSet, StructureRelatedFilterSet):
-    type1 = TypeFilter(queryset=TouristicContentType1.objects.all())
-    type2 = TypeFilter(queryset=TouristicContentType2.objects.all())
+    type1 = TypeFilter(queryset=TouristicContentType1.objects.select_related('category').all())
+    type2 = TypeFilter(queryset=TouristicContentType2.objects.select_related('category').all())
     provider = ChoiceFilter(
         field_name='provider',
         empty_label=_("Provider"),

geotrek/tourism/templatetags/tourism_tags.py

@@ -18,15 +18,15 @@ def touristic_content_categories():
             'type2_label': category.type2_label,
             'type1_values': {
                 str(type.pk): type.label
-                for type in category.types.filter(in_list=1)
+                for type in category.types.all() if type.in_list == 1
             },
             'type2_values': {
                 str(type.pk): type.label
-                for type in category.types.filter(in_list=2)
+                for type in category.types.all() if type.in_list == 2
             },
             'geometry_type': category.geometry_type
         }
-        for category in TouristicContentCategory.objects.all()
+        for category in TouristicContentCategory.objects.prefetch_related('types').all()
     }
     return json.dumps(categories)
 

geotrek/trekking/models.py

@@ -707,7 +707,7 @@ def topology_all_pois(cls, topology, queryset=None):
                                                         Transform(F('geom'), settings.SRID)))
                 qs = qs.order_by('locate')
 
-        return qs
+        return qs.select_related("type")
 
     @classmethod
     def outdoor_all_pois(cls, obj):

geotrek/trekking/templatetags/trekking_tags.py

@@ -16,7 +16,7 @@ def trek_practices():
                 for scale in practice.rating_scales.all()
             },
         }
-        for practice in Practice.objects.all().prefetch_related('rating_scales')
+        for practice in Practice.objects.prefetch_related('rating_scales').all()
     }
     return json.dumps(practices)
 

geotrek/trekking/views.py

@@ -96,7 +96,7 @@ def render_to_response(self, context):
 
 
 class TrekDetail(CompletenessMixin, MapEntityDetail):
-    queryset = Trek.objects.existing().select_related('topo_object').prefetch_related(
+    queryset = Trek.objects.existing().select_related('topo_object', 'structure').prefetch_related(
         Prefetch('view_points',
                  queryset=HDViewPoint.objects.select_related('content_type', 'license'))
     )
@@ -292,7 +292,7 @@ class POIDetail(CompletenessMixin, MapEntityDetail):
     queryset = POI.objects.existing().prefetch_related(
         Prefetch('view_points',
                  queryset=HDViewPoint.objects.select_related('content_type', 'license'))
-    )
+    ).select_related('type')
 
     def get_context_data(self, *args, **kwargs):
         context = super().get_context_data(*args, **kwargs)