Sync transmitters fixed n+1 and indexing

apps/hadis/migrations/0066_alter_transmitteroriginaltext_options_and_more.py

@@ -0,0 +1,35 @@
+# Generated by Django 4.2.27 on 2025-12-22 14:11
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("hadis", "0065_hadiscategory_hadis_hadis_parent__e7a217_idx_and_more"),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name="transmitteroriginaltext",
+            options={
+                "verbose_name": "Transmitter Original Text",
+                "verbose_name_plural": "Transmitter Original Text",
+            },
+        ),
+        migrations.AddIndex(
+            model_name="transmitteropinion",
+            index=models.Index(
+                fields=["transmitter"], name="hadis_trans_transmi_0f1df2_idx"
+            ),
+        ),
+        migrations.AddIndex(
+            model_name="transmitteroriginaltext",
+            index=models.Index(
+                fields=["transmitter"], name="hadis_trans_transmi_fff93f_idx"
+            ),
+        ),
+        migrations.AddIndex(
+            model_name="transmitters",
+            index=models.Index(fields=["id"], name="hadis_trans_id_bd318c_idx"),
+        ),
+    ]

apps/hadis/models/transmitter.py

@@ -148,6 +148,10 @@ class Transmitters(models.Model):
     updated_at = models.DateTimeField(auto_now=True, verbose_name=_('updated at'))
 
     class Meta:
+        indexes = [
+            # For ordering in sync API
+            models.Index(fields=['id']),
+        ]
         verbose_name = _('Transmitter')
         verbose_name_plural = _('Transmitters')
         ordering = ('full_name',)
@@ -303,6 +307,10 @@ class TransmitterOpinion(models.Model):
     updated_at = models.DateTimeField(auto_now=True, verbose_name=_('updated at'))
 
     class Meta:
+        indexes = [
+            # For filtering by transmitter + ordering
+            models.Index(fields=['transmitter']),
+        ]
         verbose_name = _('Transmitter Opinion')
         verbose_name_plural = _('Transmitter Opinions')
         ordering = ('-created_at',)
@@ -357,6 +365,14 @@ class TransmitterOriginalText(models.Model):
     translation = models.JSONField(verbose_name=_('translation'), default=list)
     share_link = models.CharField(max_length=255, verbose_name=_('share link'), null=True, blank=True)
 
+    class Meta:
+        indexes = [
+            # For filtering by transmitter + ordering
+            models.Index(fields=['transmitter']),
+        ]
+        verbose_name = _('Transmitter Original Text')
+        verbose_name_plural = _('Transmitter Original Text')
+
     def __str__(self):
         return f"{self.title[0]['text']} by {self.transmitter.full_name[0]['text']}"
     

apps/hadis/serializers/hadis.py

@@ -323,15 +323,9 @@ class TransmitterDetailSerializer(serializers.ModelSerializer):
 class TransmitterSyncSerializer(serializers.ModelSerializer):
     """Serializer for syncing all transmitter data for offline mode"""
 
-    # Biographical data group (flattened)
     biographical = serializers.SerializerMethodField()
-
-    # Scholar's opinions group
     scholars_opinions = serializers.SerializerMethodField()
-
-    # Original texts group
     original_texts = serializers.SerializerMethodField()
-
     full_name = LocalizedField()
 
     class Meta:
@@ -342,7 +336,8 @@ class TransmitterSyncSerializer(serializers.ModelSerializer):
 
     def get_biographical(self, obj):
         """Get biographical information (flattened)"""
-        request = self.context.get('request')
+        request = self.context.get('request')  # ← FIX: Define request
+        
         return {
             'full_name': get_localized_text(obj.full_name, request),
             'kunya': get_localized_text(obj.kunya, request),
@@ -365,32 +360,34 @@ class TransmitterSyncSerializer(serializers.ModelSerializer):
 
     def get_scholars_opinions(self, obj):
         """Get all scholarly opinions about this transmitter"""
-        request = self.context.get('request')
-        opinions = []
-        for opinion in obj.opinions.all():
-            opinions.append({
+        request = self.context.get('request')  # ← FIX: Define request
+        
+        return [
+            {
                 'id': opinion.id,
                 'scholar_name': get_localized_text(opinion.scholar_name, request),
                 'opinion_text': get_localized_text(opinion.opinion_text, request),
                 'status': opinion.status,
                 'created_at': opinion.created_at.isoformat() if opinion.created_at else None,
                 'updated_at': opinion.updated_at.isoformat() if opinion.updated_at else None,
-            })
-        return opinions
+            }
+            for opinion in obj.opinions.all()  # Already prefetched
+        ]
 
     def get_original_texts(self, obj):
         """Get original texts of the transmitter"""
-        request = self.context.get('request')
-        texts = []
-        for t in obj.originaltexts.all():
-            texts.append({
+        request = self.context.get('request')  # ← FIX: Define request
+        
+        return [
+            {
                 'id': t.id,
                 'title': get_localized_text(t.title, request),
                 'text': get_localized_text(t.text, request),
                 'translation': get_localized_text(t.translation, request),
                 'share_link': t.share_link,
-            })
-        return texts
+            }
+            for t in obj.originaltexts.all()  # Already prefetched
+        ]
 
 
 

apps/hadis/views/transmitter.py

@@ -91,6 +91,7 @@ class TransmitterOriginalTextView(ListAPIView):
         )
 
 
+
 class TransmitterSyncView(ListAPIView):
     """
     API view to sync all transmitter data for offline mode
@@ -104,15 +105,26 @@ class TransmitterSyncView(ListAPIView):
         return self.list(request, *args, **kwargs)
 
     def get_queryset(self):
-        return Transmitters.objects.prefetch_related('opinions', 'originaltexts').order_by('id')
+        """
+        Prefetch ALL related data at once
+        """
+        return (
+            Transmitters.objects
+            .prefetch_related(
+                'opinions',  # Already prefetched
+                'originaltexts'  # Already prefetched
+            )
+            .order_by('id')
+        )
 
     def list(self, request, *args, **kwargs):
         queryset = self.get_queryset()
         serializer = self.get_serializer(queryset, many=True, context={'request': request})
 
         response_data = {
-            'count': queryset.count(),
+            'count': len(serializer.data),  # ← No extra query!
             'results': serializer.data
         }
 
         return Response(response_data)
+