Implement support for rolling stock load in consists

ram/consist/migrations/0019_consistitem_load.py

@@ -0,0 +1,18 @@
+# Generated by Django 6.0 on 2026-01-03 12:31
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("consist", "0018_alter_consist_scale"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="consistitem",
+            name="load",
+            field=models.BooleanField(default=False),
+        ),
+    ]

ram/consist/models.py

@@ -43,10 +43,10 @@ class Consist(BaseModel):
 
     @property
     def length(self):
-        return self.consist_item.count()
+        return self.consist_item.filter(load=False).count()
 
     def get_type_count(self):
-        return self.consist_item.annotate(
+        return self.consist_item.filter(load=False).annotate(
             type=models.F("rolling_stock__rolling_class__type__type")
         ).values(
             "type"
@@ -69,6 +69,7 @@ class ConsistItem(models.Model):
         Consist, on_delete=models.CASCADE, related_name="consist_item"
     )
     rolling_stock = models.ForeignKey(RollingStock, on_delete=models.CASCADE)
+    load = models.BooleanField(default=False)
     order = models.PositiveIntegerField(blank=False, null=False)
 
     class Meta:
@@ -92,10 +93,15 @@ class ConsistItem(models.Model):
         # because the consist is not saved yet and it must be moved
         # to the admin form validation via InlineFormSet.clean()
         consist = self.consist
-        if rolling_stock.scale != consist.scale:
+        # Scale must match, but allow loads of any scale
+        if rolling_stock.scale != consist.scale and not self.load:
             raise ValidationError(
                 "The rolling stock and consist must be of the same scale."
             )
+        if self.load and rolling_stock.scale.ratio != consist.scale.ratio:
+            raise ValidationError(
+                "The load and consist must be of the same scale ratio."
+            )
         if self.consist.published and not rolling_stock.published:
             raise ValidationError(
                 "You must unpublish the the consist before using this item."

ram/portal/templates/consist.html

@@ -7,11 +7,11 @@
         {{ t.name }}</a>{# new line is required #}
         {% endfor %}
       </p>
+      {% endif %}
       {% if not consist.published %}
       <span class="badge text-bg-warning">Unpublished</span> |
       {% endif %}
       <small class="text-body-secondary">Updated {{ consist.updated_time | date:"M d, Y H:i" }}</small>
-      {% endif %}
       {% endblock %}
       {% block carousel %}
       {% if consist.image %}
@@ -26,6 +26,33 @@
       </div>
       {% endif %}
       {% endblock %}
+      {% block cards_layout %}
+      <div class="row row-cols-1 row-cols-md-2 row-cols-lg-3 g-3">
+      {% block cards %}
+        {% for d in data %}
+        {% include "cards/roster.html" %}
+        {% endfor %}
+      {% endblock %}
+      </div>
+      <div class="accordion shadow-sm mt-4" id="accordionLoads">
+        <div class="accordion-item">
+          <h2 class="accordion-header">
+            <button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseLoads" aria-expanded="false" aria-controls="collapseLoads">
+              <i class="bi bi-download"></i>&nbsp;Rolling Stock loaded on freight cars
+            </button>
+          </h2>
+          <div id="collapseLoads" class="accordion-collapse collapse" data-bs-parent="#accordionLoads">
+            <div class="accordion-body">
+              <div class="row row-cols-1 row-cols-md-2 row-cols-lg-3 g-3">
+                {% for l in loads %}
+                {% include "cards/roster.html" with d=l %}
+                {% endfor %}
+              </div>
+            </div>
+          </div>
+        </div>
+      </div>
+      {% endblock %}
       {% block pagination %}
       {% if data.has_other_pages %}
       <nav aria-label="Page navigation">
@@ -113,7 +140,7 @@
                     </tr>
                     <tr>
                       <th scope="row">Composition</th>
-                      <td>{% for t in consist.get_type_count %}{{ t.count }}x {{ t.type }} {{t.category }}{% if not forloop.last %} &raquo; {% endif %}{% endfor %}</td>
+                      <td>{% for t in consist.get_type_count %}{{ t.count }}x {{ t.type }} {{t.category }}{% if not forloop.last %} &raquo; {% endif %}{% endfor %}{% if loads %} | <i class="bi bi-download"></i> {{ loads|length }}x Load{{ loads|pluralize }}{% endif %}</td>
                     </tr>
                   </tbody>
                 </table>

ram/portal/views.py

@@ -526,7 +526,13 @@ class GetConsist(View):
             RollingStock.objects.get_published(request.user).get(
                 uuid=r.rolling_stock_id
             )
-            for r in consist.consist_item.all()
+            for r in consist.consist_item.filter(load=False)
+        )
+        loads = list(
+            RollingStock.objects.get_published(request.user).get(
+                uuid=r.rolling_stock_id
+            )
+            for r in consist.consist_item.filter(load=True)
         )
         paginator = Paginator(data, get_items_per_page())
         data = paginator.get_page(page)
@@ -541,6 +547,7 @@ class GetConsist(View):
                 "title": consist,
                 "consist": consist,
                 "data": data,
+                "loads": loads,
                 "page_range": page_range,
             },
         )

ram/ram/__init__.py

@@ -1,4 +1,4 @@
 from ram.utils import git_suffix
 
-__version__ = "0.19.5"
+__version__ = "0.19.6"
 __version__ += git_suffix(__file__)