根据django字段的值,在css中添加样式

我正在尝试设计我的代码行:

<td class="{% if inven < 10 %}color-green-primary{% else %}color-red-primary{% endif %}">{{inven.quantityInventory}}</span></td>

它应该根据显示的值改变颜色。糟糕的是,它总是以红色(以其他颜色)显示给我。我做错了什么?

html

                             {% for inven in inventory %}
                                <tr>
                                   <td><strong>{{inven.codigoInventory}}</strong></td>
                                   <td>{{inven.descriptionInventory}}</td>
                                   <td>${{inven.unitPriceInventory}}</td>
                                   <td class="{% if inven < 10 %}color-green-primary{% else %}color-red-primary{% endif %}">{{inven.quantityInventory}}</span></td>
                                   <td>{{inven.dealer}}</td>
                                   <td>{{inven.invoiceNumber}}</td>
                                   <td>
                                      <div class="badge bg-soft-danger font-size-12">{{inven.status}}</div>
                                   </td>
                                   <td><a href="{% url 'inventory:inventory_detail' inven.id%}">Detail</a></td>
                                   <td><a href="{% url 'inventory:edit_inventory' inven.id%}">Edit</a></td>
                                   <td><a href="{% url 'inventory:eliminar_inventory' inven.id%}" class="text-danger" >Delete</a></td>
                                </tr>
                                {% endfor %}

意见。py

def list_inventory(request):

    if request.method == 'POST':
        fromdate=request.POST.get('fromdate')
        todate = request.POST.get('todate')
        searchresult = Inventory.objects.filter(fecha_registro__range=(fromdate, todate))
        return render(request,'inventory/inventory-list.html',{'inventory':searchresult})

    else:
        displaydata = Inventory.objects.all()
    return render(request, 'inventory/inventory-list.html', {'inventory': displaydata})

{% if inven.quantityInventory < 10 %} <td class="color-green-primary">{{inven.quantityInventory}}</span></td> {% else %} <td class="color-red-primary">{{inven.quantityInventory}}</span></td> {% endif %}