refactor: Rename launch_type to propulsion_system across the codebase

backend/apps/rides/admin.py

@@ -94,7 +94,7 @@ class RollerCoasterStatsInline(admin.StackedInline):
     fields = (
         ("height_ft", "length_ft", "speed_mph"),
         ("track_material", "roller_coaster_type"),
-        ("launch_type", "inversions"),
+        ("propulsion_system", "inversions"),
         ("max_drop_height_ft", "ride_time_seconds"),
         ("train_style", "trains_count"),
         ("cars_per_train", "seats_per_car"),
@@ -270,7 +270,7 @@ class RollerCoasterStatsAdmin(admin.ModelAdmin):
     list_filter = (
         "track_material",
         "roller_coaster_type",
-        "launch_type",
+        "propulsion_system",
         "inversions",
     )
     search_fields = (
@@ -301,7 +301,7 @@ class RollerCoasterStatsAdmin(admin.ModelAdmin):
                     "track_material",
                     "track_type",
                     "roller_coaster_type",
-                    "launch_type",
+                    "propulsion_system",
                     "inversions",
                 )
             },

backend/apps/rides/choices.py

@@ -389,8 +389,8 @@ COASTER_TYPES = [
     ),
 ]
 
-# Launch System Choices
-LAUNCH_SYSTEMS = [
+# Propulsion System Choices
+PROPULSION_SYSTEMS = [
     RichChoice(
         value="CHAIN",
         label="Chain Lift",
@@ -442,7 +442,7 @@ LAUNCH_SYSTEMS = [
     RichChoice(
         value="OTHER",
         label="Other",
-        description="Launch system that doesn't fit standard categories",
+        description="Propulsion system that doesn't fit standard categories",
         metadata={
             'color': 'gray',
             'icon': 'other',
@@ -760,11 +760,11 @@ def register_rides_choices():
     )
     
     register_choices(
-        name="launch_systems",
-        choices=LAUNCH_SYSTEMS,
+        name="propulsion_systems",
+        choices=PROPULSION_SYSTEMS,
         domain="rides",
-        description="Roller coaster launch and lift systems",
-        metadata={'domain': 'rides', 'type': 'launch_system', 'applies_to': 'roller_coasters'}
+        description="Roller coaster propulsion and lift systems",
+        metadata={'domain': 'rides', 'type': 'propulsion_system', 'applies_to': 'roller_coasters'}
     )
     
     register_choices(

backend/apps/rides/forms/search.py

@@ -347,12 +347,12 @@ class RollerCoasterForm(BaseFilterForm):
         # Get choices - let exceptions propagate if registry fails
         track_material_choices = [(choice.value, choice.label) for choice in get_choices("track_materials", "rides")]
         coaster_type_choices = [(choice.value, choice.label) for choice in get_choices("coaster_types", "rides")]
-        launch_type_choices = [(choice.value, choice.label) for choice in get_choices("launch_systems", "rides")]
+        propulsion_system_choices = [(choice.value, choice.label) for choice in get_choices("propulsion_systems", "rides")]
         
         # Update field choices dynamically
         self.fields['track_material'].choices = track_material_choices
         self.fields['coaster_type'].choices = coaster_type_choices
-        self.fields['launch_type'].choices = launch_type_choices
+        self.fields['propulsion_system'].choices = propulsion_system_choices
 
     height_ft_range = NumberRangeField(
         min_val=0, max_val=500, step=1, required=False, label="Height (feet)"
@@ -384,7 +384,7 @@ class RollerCoasterForm(BaseFilterForm):
         ),
     )
 
-    launch_type = forms.MultipleChoiceField(
+    propulsion_system = forms.MultipleChoiceField(
         choices=[],  # Will be populated in __init__
         required=False,
         widget=forms.CheckboxSelectMultiple(
@@ -579,7 +579,7 @@ class MasterFilterForm(BaseFilterForm):
                 "inversions_range",
                 "track_material",
                 "coaster_type",
-                "launch_type",
+                "propulsion_system",
             ],
             "Company": ["manufacturer_roles", "designer_roles", "founded_date_range"],
         }

backend/apps/rides/managers.py

@@ -271,7 +271,7 @@ class RollerCoasterStatsQuerySet(BaseQuerySet):
 
     def launched_coasters(self):
         """Filter for launched coasters."""
-        return self.exclude(launch_type="NONE")
+        return self.exclude(propulsion_system="NONE")
 
     def by_track_type(self, *, track_type: str):
         """Filter by track type."""

backend/apps/rides/migrations/0024_rename_launch_type_to_propulsion_system.py

@@ -0,0 +1,99 @@
+# Generated by Django 5.2.5 on 2025-09-17 01:25
+
+import apps.core.choices.fields
+import pgtrigger.compiler
+import pgtrigger.migrations
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("rides", "0023_alter_ridemodelphoto_photo_type_and_more"),
+    ]
+
+    operations = [
+        pgtrigger.migrations.RemoveTrigger(
+            model_name="rollercoasterstats",
+            name="insert_insert",
+        ),
+        pgtrigger.migrations.RemoveTrigger(
+            model_name="rollercoasterstats",
+            name="update_update",
+        ),
+        migrations.RemoveField(
+            model_name="rollercoasterstats",
+            name="launch_type",
+        ),
+        migrations.RemoveField(
+            model_name="rollercoasterstatsevent",
+            name="launch_type",
+        ),
+        migrations.AddField(
+            model_name="rollercoasterstats",
+            name="propulsion_system",
+            field=apps.core.choices.fields.RichChoiceField(
+                allow_deprecated=False,
+                choice_group="propulsion_systems",
+                choices=[
+                    ("CHAIN", "Chain Lift"),
+                    ("LSM", "LSM Launch"),
+                    ("HYDRAULIC", "Hydraulic Launch"),
+                    ("GRAVITY", "Gravity"),
+                    ("OTHER", "Other"),
+                ],
+                default="CHAIN",
+                domain="rides",
+                help_text="Propulsion or lift system type",
+                max_length=20,
+            ),
+        ),
+        migrations.AddField(
+            model_name="rollercoasterstatsevent",
+            name="propulsion_system",
+            field=apps.core.choices.fields.RichChoiceField(
+                allow_deprecated=False,
+                choice_group="propulsion_systems",
+                choices=[
+                    ("CHAIN", "Chain Lift"),
+                    ("LSM", "LSM Launch"),
+                    ("HYDRAULIC", "Hydraulic Launch"),
+                    ("GRAVITY", "Gravity"),
+                    ("OTHER", "Other"),
+                ],
+                default="CHAIN",
+                domain="rides",
+                help_text="Propulsion or lift system type",
+                max_length=20,
+            ),
+        ),
+        pgtrigger.migrations.AddTrigger(
+            model_name="rollercoasterstats",
+            trigger=pgtrigger.compiler.Trigger(
+                name="insert_insert",
+                sql=pgtrigger.compiler.UpsertTriggerSql(
+                    func='INSERT INTO "rides_rollercoasterstatsevent" ("cars_per_train", "height_ft", "id", "inversions", "length_ft", "max_drop_height_ft", "pgh_context_id", "pgh_created_at", "pgh_label", "pgh_obj_id", "propulsion_system", "ride_id", "ride_time_seconds", "roller_coaster_type", "seats_per_car", "speed_mph", "track_material", "track_type", "train_style", "trains_count") VALUES (NEW."cars_per_train", NEW."height_ft", NEW."id", NEW."inversions", NEW."length_ft", NEW."max_drop_height_ft", _pgh_attach_context(), NOW(), \'insert\', NEW."id", NEW."propulsion_system", NEW."ride_id", NEW."ride_time_seconds", NEW."roller_coaster_type", NEW."seats_per_car", NEW."speed_mph", NEW."track_material", NEW."track_type", NEW."train_style", NEW."trains_count"); RETURN NULL;',
+                    hash="89e2bb56c0befa025a9961f8df34a8a02c09f188",
+                    operation="INSERT",
+                    pgid="pgtrigger_insert_insert_96f8b",
+                    table="rides_rollercoasterstats",
+                    when="AFTER",
+                ),
+            ),
+        ),
+        pgtrigger.migrations.AddTrigger(
+            model_name="rollercoasterstats",
+            trigger=pgtrigger.compiler.Trigger(
+                name="update_update",
+                sql=pgtrigger.compiler.UpsertTriggerSql(
+                    condition="WHEN (OLD.* IS DISTINCT FROM NEW.*)",
+                    func='INSERT INTO "rides_rollercoasterstatsevent" ("cars_per_train", "height_ft", "id", "inversions", "length_ft", "max_drop_height_ft", "pgh_context_id", "pgh_created_at", "pgh_label", "pgh_obj_id", "propulsion_system", "ride_id", "ride_time_seconds", "roller_coaster_type", "seats_per_car", "speed_mph", "track_material", "track_type", "train_style", "trains_count") VALUES (NEW."cars_per_train", NEW."height_ft", NEW."id", NEW."inversions", NEW."length_ft", NEW."max_drop_height_ft", _pgh_attach_context(), NOW(), \'update\', NEW."id", NEW."propulsion_system", NEW."ride_id", NEW."ride_time_seconds", NEW."roller_coaster_type", NEW."seats_per_car", NEW."speed_mph", NEW."track_material", NEW."track_type", NEW."train_style", NEW."trains_count"); RETURN NULL;',
+                    hash="047cc99ae3282202b6dc43c8dbe07690076d5068",
+                    operation="UPDATE",
+                    pgid="pgtrigger_update_update_24e8a",
+                    table="rides_rollercoasterstats",
+                    when="AFTER",
+                ),
+            ),
+        ),
+    ]

backend/apps/rides/models/rides.py

@@ -718,10 +718,10 @@ class Ride(TrackedModel):
                     type_choice = stats.get_roller_coaster_type_rich_choice()
                     if type_choice:
                         search_parts.append(type_choice.label)
-                if stats.launch_type:
-                    launch_choice = stats.get_launch_type_rich_choice()
-                    if launch_choice:
-                        search_parts.append(launch_choice.label)
+                if stats.propulsion_system:
+                    propulsion_choice = stats.get_propulsion_system_rich_choice()
+                    if propulsion_choice:
+                        search_parts.append(propulsion_choice.label)
                 if stats.train_style:
                     search_parts.append(stats.train_style)
         except Exception:
@@ -878,12 +878,12 @@ class RollerCoasterStats(models.Model):
     max_drop_height_ft = models.DecimalField(
         max_digits=6, decimal_places=2, null=True, blank=True
     )
-    launch_type = RichChoiceField(
-        choice_group="launch_systems",
+    propulsion_system = RichChoiceField(
+        choice_group="propulsion_systems",
         domain="rides",
         max_length=20,
         default="CHAIN",
-        help_text="Launch or lift system type"
+        help_text="Propulsion or lift system type"
     )
     train_style = models.CharField(max_length=255, blank=True)
     trains_count = models.PositiveIntegerField(null=True, blank=True)

backend/apps/rides/services/hybrid_loader.py

@@ -290,8 +290,8 @@ class SmartRideLoader:
         if 'track_material' in filters and filters['track_material']:
             q_objects &= Q(coaster_stats__track_material__in=filters['track_material'])
         
-        if 'launch_type' in filters and filters['launch_type']:
-            q_objects &= Q(coaster_stats__launch_type__in=filters['launch_type'])
+        if 'propulsion_system' in filters and filters['propulsion_system']:
+            q_objects &= Q(coaster_stats__propulsion_system__in=filters['propulsion_system'])
         
         # Roller coaster height filters
         if 'min_height_ft' in filters and filters['min_height_ft']:
@@ -429,7 +429,7 @@ class SmartRideLoader:
                     'track_material': stats.track_material,
                     'roller_coaster_type': stats.roller_coaster_type,
                     'max_drop_height_ft': float(stats.max_drop_height_ft) if stats.max_drop_height_ft else None,
-                    'launch_type': stats.launch_type,
+                    'propulsion_system': stats.propulsion_system,
                     'train_style': stats.train_style,
                     'trains_count': stats.trains_count,
                     'cars_per_train': stats.cars_per_train,
@@ -495,9 +495,9 @@ class SmartRideLoader:
             count=models.Count('ride')
         ).exclude(track_material__isnull=True).order_by('track_material'))
         
-        launch_types_data = list(RollerCoasterStats.objects.values('launch_type').annotate(
+        propulsion_systems_data = list(RollerCoasterStats.objects.values('propulsion_system').annotate(
             count=models.Count('ride')
-        ).exclude(launch_type__isnull=True).order_by('launch_type'))
+        ).exclude(propulsion_system__isnull=True).order_by('propulsion_system'))
         
         # Convert to frontend-expected format with value/label/count
         categories = [
@@ -536,13 +536,13 @@ class SmartRideLoader:
             for item in track_materials_data
         ]
         
-        launch_types = [
+        propulsion_systems = [
             {
-                'value': item['launch_type'],
-                'label': self._get_launch_type_label(item['launch_type']),
+                'value': item['propulsion_system'],
+                'label': self._get_propulsion_system_label(item['propulsion_system']),
                 'count': item['count']
             }
-            for item in launch_types_data
+            for item in propulsion_systems_data
         ]
         
         # Convert other data to expected format
@@ -633,7 +633,7 @@ class SmartRideLoader:
                 'statuses': statuses,
                 'roller_coaster_types': roller_coaster_types,
                 'track_materials': track_materials,
-                'launch_types': launch_types,
+                'propulsion_systems': propulsion_systems,
                 'parks': parks,
                 'park_areas': park_areas,
                 'manufacturers': manufacturers,
@@ -746,6 +746,7 @@ class SmartRideLoader:
             'BOBSLED': 'Bobsled',
             'PIPELINE': 'Pipeline',
             'FOURTH_DIMENSION': '4th Dimension',
+            'FAMILY': 'Family',
         }
         if rc_type in rc_type_labels:
             return rc_type_labels[rc_type]
@@ -764,9 +765,9 @@ class SmartRideLoader:
         else:
             raise ValueError(f"Unknown track material: {material}")
     
-    def _get_launch_type_label(self, launch_type: str) -> str:
-        """Convert launch type to human-readable label."""
-        launch_labels = {
+    def _get_propulsion_system_label(self, propulsion_system: str) -> str:
+        """Convert propulsion system to human-readable label."""
+        propulsion_labels = {
             'CHAIN': 'Chain Lift',
             'LSM': 'Linear Synchronous Motor',
             'LIM': 'Linear Induction Motor',
@@ -774,9 +775,10 @@ class SmartRideLoader:
             'PNEUMATIC': 'Pneumatic Launch',
             'CABLE': 'Cable Lift',
             'FLYWHEEL': 'Flywheel Launch',
-            'NONE': 'No Launch System',
+            'GRAVITY': 'Gravity',
+            'NONE': 'No Propulsion System',
         }
-        if launch_type in launch_labels:
-            return launch_labels[launch_type]
+        if propulsion_system in propulsion_labels:
+            return propulsion_labels[propulsion_system]
         else:
-            raise ValueError(f"Unknown launch type: {launch_type}")
+            raise ValueError(f"Unknown propulsion system: {propulsion_system}")

backend/apps/rides/services/search.py

@@ -60,7 +60,7 @@ class RideSearchService:
             "inversions_range",
             "track_material",
             "coaster_type",
-            "launch_type",
+            "propulsion_system",
         ],
         "company": ["manufacturer_roles", "designer_roles", "founded_date_range"],
     }
@@ -434,14 +434,14 @@ class RideSearchService:
                 rollercoasterstats__roller_coaster_type__in=types
             )
 
-        # Launch type filter (multi-select)
-        if filters.get("launch_type"):
-            launch_types = (
-                filters["launch_type"]
-                if isinstance(filters["launch_type"], list)
-                else [filters["launch_type"]]
+        # Propulsion system filter (multi-select)
+        if filters.get("propulsion_system"):
+            propulsion_systems = (
+                filters["propulsion_system"]
+                if isinstance(filters["propulsion_system"], list)
+                else [filters["propulsion_system"]]
             )
-            queryset = queryset.filter(rollercoasterstats__launch_type__in=launch_types)
+            queryset = queryset.filter(rollercoasterstats__propulsion_system__in=propulsion_systems)
 
         return queryset
 
@@ -589,7 +589,7 @@ class RideSearchService:
             "inversions_range": "Inversions",
             "track_material": "Track Material",
             "coaster_type": "Coaster Type",
-            "launch_type": "Launch Type",
+            "propulsion_system": "Propulsion System",
             "manufacturer_roles": "Manufacturer Roles",
             "designer_roles": "Designer Roles",
             "founded_date_range": "Founded Date",