octopus/myproject/templates/navbar.html

<!-- navbar.html - Reusable navigation bar component -->
<style>
    .navbar .dropdown:hover > .dropdown-menu {
        display: block;
        margin-top: 0;
    }
</style>
<nav class="navbar navbar-expand-lg navbar-light bg-light fixed-top">
    <div class="container">
        <!-- Toggler for mobile view -->
        <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNav"
                aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
            <span class="navbar-toggler-icon"></span>
        </button>

        <!-- Navbar content -->
        <div class="collapse navbar-collapse" id="navbarNav">
            <ul class="navbar-nav me-auto">
                {% if user.is_authenticated %}
                    <!-- Main navigation links -->
                    <li class="nav-item">
                        <a class="nav-link {% if request.resolver_match.namespace == 'products' and request.resolver_match.url_name in 'all-products,product-list,productkit-list,product-detail,product-create,product-update,productkit-detail,productkit-create,productkit-update' %}active{% endif %}" href="{% url 'products:all-products' %}">Товары</a>
                    </li>
                    <li class="nav-item">
                        <a class="nav-link {% if request.resolver_match.namespace == 'products' and 'configurablekit' in request.resolver_match.url_name %}active{% endif %}" href="{% url 'products:configurablekit-list' %}">Вариативные товары</a>
                    </li>
                    <li class="nav-item">
                        <a class="nav-link {% if request.resolver_match.namespace == 'products' and 'variantgroup' in request.resolver_match.url_name %}active{% endif %}" href="{% url 'products:variantgroup-list' %}">Варианты</a>
                    </li>
                    <li class="nav-item">
                        <a class="nav-link {% if request.resolver_match.namespace == 'products' and 'tag' in request.resolver_match.url_name %}active{% endif %}" href="{% url 'products:tag-list' %}">Теги</a>
                    </li>
                    <li class="nav-item dropdown">
                        <a class="nav-link dropdown-toggle {% if request.resolver_match.namespace == 'orders' %}active{% endif %}" href="{% url 'orders:order-list' %}" id="ordersDropdown">Заказы</a>
                        <ul class="dropdown-menu" aria-labelledby="ordersDropdown">
                            <li><a class="dropdown-item" href="{% url 'orders:order-list' %}">Список заказов</a></li>
                            <li><hr class="dropdown-divider"></li>
                            <li><a class="dropdown-item" href="{% url 'orders:status_list' %}">Статусы заказов</a></li>
                        </ul>
                    </li>
                    <li class="nav-item">
                        <a class="nav-link {% if request.resolver_match.namespace == 'customers' %}active{% endif %}" href="{% url 'customers:customer-list' %}">Клиенты</a>
                    </li>
                    <li class="nav-item">
                        <a class="nav-link {% if request.resolver_match.namespace == 'pos' %}active{% endif %}" href="{% url 'pos:terminal' %}">Касса</a>
                    </li>
                    <li class="nav-item">
                        <a class="nav-link {% if request.resolver_match.namespace == 'inventory' %}active{% endif %}" href="{% url 'inventory:inventory-home' %}">Склад</a>
                    </li>
                {% endif %}
            </ul>

            <ul class="navbar-nav align-items-center">
                {% if user.is_authenticated %}
                    <!-- Show profile button and logout button for authenticated users -->
                    <li class="nav-item">
                        <a class="btn btn-outline-primary me-2" href="{% url 'accounts:profile' %}">Профиль</a>
                    </li>
                    <li class="nav-item d-flex align-items-center mx-2">
                        <span class="navbar-text mb-0">
                            ({{ user.name|default:user.email }})
                        </span>
                    </li>
                    <li class="nav-item">
                        <a class="btn btn-outline-secondary ms-2" href="{% url 'accounts:logout' %}">Выйти</a>
                    </li>
                {% else %}
                    <!-- Show login and register buttons for non-authenticated users -->
                    <li class="nav-item">
                        <a class="btn btn-outline-primary me-2" href="{% url 'accounts:login' %}">Вход</a>
                    </li>
                    <li class="nav-item">
                        <a class="btn btn-outline-secondary" href="{% url 'accounts:register' %}">Регистрация</a>
                    </li>
                {% endif %}
            </ul>
        </div>
    </div>
</nav>