Implement hybrid filtering strategy for parks and rides

- Added comprehensive documentation for hybrid filtering implementation, including architecture, API endpoints, performance characteristics, and usage examples.
- Developed a hybrid pagination and client-side filtering recommendation, detailing server-side responsibilities and client-side logic.
- Created a test script for hybrid filtering endpoints, covering various test cases including basic filtering, search functionality, pagination, and edge cases.

backend/apps/rides/models/rides.py

@@ -538,6 +538,10 @@ class Ride(TrackedModel):
         max_digits=3, decimal_places=2, null=True, blank=True
     )
 
+    # Computed fields for hybrid filtering
+    opening_year = models.IntegerField(null=True, blank=True, db_index=True)
+    search_text = models.TextField(blank=True, db_index=True)
+
     # Image settings - references to existing photos
     banner_image = models.ForeignKey(
         "RidePhoto",
@@ -639,14 +643,14 @@ class Ride(TrackedModel):
                 pass
 
         # If park changed or this is a new ride, ensure slug uniqueness within the park
-        park_changed = original_ride and original_ride.park_id != self.park_id
+        park_changed = original_ride and original_ride.park.id != self.park.id
         if not self.pk or park_changed:
             self._ensure_unique_slug_in_park()
 
         # Handle park area validation when park changes
         if park_changed and self.park_area:
             # Check if park_area belongs to the new park
-            if self.park_area.park_id != self.park_id:
+            if self.park_area.park.id != self.park.id:
                 # Clear park_area if it doesn't belong to the new park
                 self.park_area = None
 
@@ -658,8 +662,93 @@ class Ride(TrackedModel):
             self.url = f"{frontend_domain}/parks/{self.park.slug}/rides/{self.slug}/"
             self.park_url = f"{frontend_domain}/parks/{self.park.slug}/"
 
+        # Populate computed fields
+        self._populate_computed_fields()
+
         super().save(*args, **kwargs)
 
+    def _populate_computed_fields(self) -> None:
+        """Populate computed fields for hybrid filtering."""
+        # Extract opening year from opening_date
+        if self.opening_date:
+            self.opening_year = self.opening_date.year
+        else:
+            self.opening_year = None
+
+        # Build comprehensive search text
+        search_parts = []
+        
+        # Basic ride info
+        if self.name:
+            search_parts.append(self.name)
+        if self.description:
+            search_parts.append(self.description)
+        
+        # Park info
+        if self.park:
+            search_parts.append(self.park.name)
+            if hasattr(self.park, 'location') and self.park.location:
+                if self.park.location.city:
+                    search_parts.append(self.park.location.city)
+                if self.park.location.state:
+                    search_parts.append(self.park.location.state)
+                if self.park.location.country:
+                    search_parts.append(self.park.location.country)
+        
+        # Park area
+        if self.park_area:
+            search_parts.append(self.park_area.name)
+        
+        # Category
+        if self.category:
+            category_display = dict(CATEGORY_CHOICES).get(self.category, '')
+            if category_display:
+                search_parts.append(category_display)
+        
+        # Status
+        if self.status:
+            status_display = dict(self.STATUS_CHOICES).get(self.status, '')
+            if status_display:
+                search_parts.append(status_display)
+        
+        # Companies
+        if self.manufacturer:
+            search_parts.append(self.manufacturer.name)
+        if self.designer:
+            search_parts.append(self.designer.name)
+        
+        # Ride model
+        if self.ride_model:
+            search_parts.append(self.ride_model.name)
+            if self.ride_model.manufacturer:
+                search_parts.append(self.ride_model.manufacturer.name)
+        
+        # Roller coaster stats if available
+        try:
+            if hasattr(self, 'coaster_stats') and self.coaster_stats:
+                stats = self.coaster_stats
+                if stats.track_type:
+                    search_parts.append(stats.track_type)
+                if stats.track_material:
+                    material_display = dict(RollerCoasterStats.TRACK_MATERIAL_CHOICES).get(stats.track_material, '')
+                    if material_display:
+                        search_parts.append(material_display)
+                if stats.roller_coaster_type:
+                    type_display = dict(RollerCoasterStats.COASTER_TYPE_CHOICES).get(stats.roller_coaster_type, '')
+                    if type_display:
+                        search_parts.append(type_display)
+                if stats.launch_type:
+                    launch_display = dict(RollerCoasterStats.LAUNCH_CHOICES).get(stats.launch_type, '')
+                    if launch_display:
+                        search_parts.append(launch_display)
+                if stats.train_style:
+                    search_parts.append(stats.train_style)
+        except Exception:
+            # Ignore if coaster_stats doesn't exist or has issues
+            pass
+        
+        self.search_text = ' '.join(filter(None, search_parts)).lower()
+
     def _ensure_unique_slug_in_park(self) -> None:
         """Ensure the ride's slug is unique within its park."""
         base_slug = slugify(self.name)
@@ -685,7 +774,6 @@ class Ride(TrackedModel):
         Returns:
             dict: Summary of changes made
         """
-        from django.apps import apps
 
         old_park = self.park
         old_url = self.url