Создано приложение POS с планшетным интерфейсом терминала продаж

myproject/myproject/settings.py

@@ -74,6 +74,7 @@ TENANT_APPS = [
     'products',      # Товары и категории
     'orders',        # Заказы
     'inventory',     # Складской учет
+    'pos',           # POS Terminal
 ]
 
 # Объединяем для INSTALLED_APPS

myproject/myproject/urls.py

@@ -21,6 +21,7 @@ urlpatterns = [
     path('customers/', include('customers.urls')),  # Управление клиентами
     path('inventory/', include('inventory.urls')),  # Управление складом
     path('orders/', include('orders.urls')),  # Управление заказами
+    path('pos/', include('pos.urls')),  # POS Terminal
 ]
 
 # Serve media files during development

myproject/orders/models.py

@@ -495,10 +495,14 @@ class Order(models.Model):
         return f"Заказ #{self.order_number} - {self.customer}"
 
     def save(self, *args, **kwargs):
-        # Генерируем уникальный номер заказа при создании
+        # Генерируем уникальный номер заказа при создании (начиная с 100 для 3-значного поиска)
         if not self.order_number:
             last_order = Order.objects.order_by('-order_number').first()
-            self.order_number = (last_order.order_number if last_order else 0) + 1
+            if last_order:
+                # Если ранее нумерация была ниже 100, начинаем с 100; иначе инкремент
+                self.order_number = max(last_order.order_number + 1, 100)
+            else:
+                self.order_number = 100
         super().save(*args, **kwargs)
 
     def clean(self):

myproject/pos/admin.py

@@ -0,0 +1,3 @@
+from django.contrib import admin
+
+# POS admin (placeholder)

myproject/pos/apps.py

@@ -0,0 +1,7 @@
+from django.apps import AppConfig
+
+
+class PosConfig(AppConfig):
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'pos'
+    verbose_name = 'POS Terminal'

myproject/pos/models.py

@@ -0,0 +1,3 @@
+from django.db import models
+
+# POS app models (placeholder for future extensions)

myproject/pos/static/pos/css/terminal.css

@@ -0,0 +1,53 @@
+/* POS Terminal Styles */
+
+body {
+  background-color: #e9ecef;
+}
+
+.pos-container {
+  max-width: 100%;
+  padding: 0 1rem;
+}
+
+.product-card {
+  cursor: pointer;
+  user-select: none;
+  transition: all 0.2s;
+  border-radius: 12px;
+  border: 1px solid #dee2e6;
+  background: white;
+  height: 100%;
+  min-height: 140px;
+}
+
+.product-card:hover {
+  transform: translateY(-2px);
+  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
+}
+
+.product-card.selected {
+  background: #e7f3ff;
+  border-color: #0d6efd;
+}
+
+.product-card .card-body {
+  padding: 1.25rem;
+  display: flex;
+  flex-direction: column;
+  justify-content: center;
+  align-items: center;
+  text-align: center;
+}
+
+.product-name {
+  font-weight: 500;
+  font-size: 1rem;
+  margin-bottom: 0.5rem;
+  color: #495057;
+}
+
+.product-stock {
+  font-size: 0.9rem;
+  color: #6c757d;
+  font-style: italic;
+}

myproject/pos/static/pos/js/terminal.js

@@ -0,0 +1,170 @@
+// POS Terminal JavaScript
+
+const CATEGORIES = JSON.parse(document.getElementById('categoriesData').textContent);
+const PRODUCTS = JSON.parse(document.getElementById('productsData').textContent);
+
+let currentCategoryId = null;
+const cart = new Map(); // productId -> {id, name, price, qty}
+
+function formatMoney(v) {
+  return (Number(v)).toFixed(2);
+}
+
+function renderProducts() {
+  const grid = document.getElementById('productGrid');
+  grid.innerHTML = '';
+  const searchTerm = document.getElementById('searchInput').value.toLowerCase();
+  
+  let filtered = currentCategoryId
+    ? PRODUCTS.filter(p => (p.category_ids || []).includes(currentCategoryId))
+    : PRODUCTS;
+  
+  if (searchTerm) {
+    filtered = filtered.filter(p => p.name.toLowerCase().includes(searchTerm));
+  }
+
+  filtered.forEach(p => {
+    const col = document.createElement('div');
+    col.className = 'col-6 col-sm-4 col-md-3 col-lg-2';
+    
+    const card = document.createElement('div');
+    card.className = 'card product-card';
+    card.onclick = () => addToCart(p);
+    
+    const body = document.createElement('div');
+    body.className = 'card-body';
+    
+    const name = document.createElement('div');
+    name.className = 'product-name';
+    name.textContent = p.name;
+    
+    const stock = document.createElement('div');
+    stock.className = 'product-stock';
+    stock.textContent = 'В наличии';
+    
+    body.appendChild(name);
+    body.appendChild(stock);
+    card.appendChild(body);
+    col.appendChild(card);
+    grid.appendChild(col);
+  });
+}
+
+function addToCart(p) {
+  if (!cart.has(p.id)) {
+    cart.set(p.id, { id: p.id, name: p.name, price: Number(p.price), qty: 1 });
+  } else {
+    cart.get(p.id).qty += 1;
+  }
+  renderCart();
+}
+
+function updateQty(id, delta) {
+  if (!cart.has(id)) return;
+  const item = cart.get(id);
+  item.qty += delta;
+  if (item.qty <= 0) cart.delete(id);
+  renderCart();
+}
+
+function renderCart() {
+  const list = document.getElementById('cartList');
+  list.innerHTML = '';
+  let total = 0;
+  
+  if (cart.size === 0) {
+    list.innerHTML = '<p class="text-muted text-center py-4 small">Корзина пуста</p>';
+    document.getElementById('cartTotal').textContent = '0.00';
+    return;
+  }
+  
+  cart.forEach(item => {
+    const row = document.createElement('div');
+    row.className = 'mb-2 pb-2 border-bottom';
+    
+    const nameRow = document.createElement('div');
+    nameRow.className = 'd-flex justify-content-between align-items-start mb-1';
+    nameRow.innerHTML = `
+      <div class="fw-semibold small">${item.name}</div>
+      <button class="btn btn-sm btn-link text-danger p-0 ms-2" onclick="event.stopPropagation(); removeFromCart(${item.id});">
+        <i class="bi bi-x"></i>
+      </button>
+    `;
+    
+    const controlsRow = document.createElement('div');
+    controlsRow.className = 'd-flex justify-content-between align-items-center';
+    
+    const controls = document.createElement('div');
+    controls.className = 'btn-group btn-group-sm';
+    
+    const minus = document.createElement('button');
+    minus.className = 'btn btn-outline-secondary';
+    minus.innerHTML = '<i class="bi bi-dash"></i>';
+    minus.onclick = (e) => { e.stopPropagation(); updateQty(item.id, -1); };
+    
+    const qtySpan = document.createElement('button');
+    qtySpan.className = 'btn btn-outline-secondary disabled';
+    qtySpan.textContent = item.qty;
+    
+    const plus = document.createElement('button');
+    plus.className = 'btn btn-outline-secondary';
+    plus.innerHTML = '<i class="bi bi-plus"></i>';
+    plus.onclick = (e) => { e.stopPropagation(); updateQty(item.id, +1); };
+    
+    controls.appendChild(minus);
+    controls.appendChild(qtySpan);
+    controls.appendChild(plus);
+    
+    const priceDiv = document.createElement('div');
+    priceDiv.className = 'text-end small';
+    priceDiv.innerHTML = `<strong>${formatMoney(item.price * item.qty)}</strong>`;
+    
+    controlsRow.appendChild(controls);
+    controlsRow.appendChild(priceDiv);
+    
+    row.appendChild(nameRow);
+    row.appendChild(controlsRow);
+    list.appendChild(row);
+    
+    total += item.qty * item.price;
+  });
+  
+  document.getElementById('cartTotal').textContent = formatMoney(total);
+}
+
+function removeFromCart(id) {
+  cart.delete(id);
+  renderCart();
+}
+
+function clearCart() {
+  cart.clear();
+  renderCart();
+}
+
+document.getElementById('clearCart').onclick = clearCart;
+
+// Заглушки для функционала (будет реализовано позже)
+document.getElementById('checkoutNow').onclick = async () => {
+  alert('Функционал будет подключен позже: создание заказа и списание со склада.');
+};
+
+document.getElementById('scheduleLater').onclick = async () => {
+  alert('Функционал будет подключен позже: создание заказа на доставку/самовывоз.');
+};
+
+// Categories removed from this view - can be added as filter dropdown later if needed
+
+// Search functionality
+document.getElementById('searchInput').addEventListener('input', () => {
+  renderProducts();
+});
+
+// Customer selection
+document.getElementById('customerSelectBtn').addEventListener('click', () => {
+  alert('Функция выбора клиента будет реализована позже');
+});
+
+// Инициализация
+renderProducts();
+renderCart();

myproject/pos/templates/pos/terminal.html

@@ -0,0 +1,122 @@
+{% extends 'base.html' %}
+{% load static %}
+{% block title %}POS Terminal{% endblock %}
+
+{% block extra_css %}
+<link rel="stylesheet" href="{% static 'pos/css/terminal.css' %}">
+{% endblock %}
+
+{% block content %}
+<!-- Main Content -->
+<div class="pos-container">
+  <div class="row g-3">
+    <!-- Products Grid (Left side - 8/12) -->
+    <div class="col-md-8">
+      <!-- Search Box -->
+      <div class="mb-3">
+        <input type="text" class="form-control" id="searchInput" placeholder="Поиск по товарам...">
+      </div>
+      
+      <div class="row g-3" id="productGrid"></div>
+    </div>
+    
+    <!-- Right Panel (4/12) -->
+    <div class="col-md-4">
+      <!-- Cart Panel -->
+      <div class="card mb-3">
+        <div class="card-header bg-white d-flex justify-content-between align-items-center">
+          <h6 class="mb-0">Корзина</h6>
+          <button class="btn btn-outline-primary btn-sm" id="customerSelectBtn">
+            <i class="bi bi-person"></i> Выбрать клиента
+          </button>
+        </div>
+        <div class="card-body d-flex flex-column" style="min-height: 300px;">
+          <div id="cartList" class="flex-grow-1 mb-3" style="overflow-y: auto; max-height: 300px;"></div>
+          
+          <div class="mt-auto">
+            <div class="d-flex justify-content-between align-items-center mb-3 pb-3 border-top pt-3">
+              <h5 class="mb-0">Итого:</h5>
+              <h5 class="mb-0 text-primary" id="cartTotal">0.00</h5>
+            </div>
+            
+            <div class="mb-3">
+              <label class="form-label small">Способ оплаты</label>
+              <select class="form-select form-select-sm" id="paymentMethod">
+                <option value="cash_to_courier">Наличные</option>
+                <option value="card_to_courier">Карта</option>
+                <option value="online">Онлайн</option>
+                <option value="bank_transfer">Банк. перевод</option>
+              </select>
+            </div>
+            
+            <div class="d-grid gap-2">
+              <button class="btn btn-success" id="checkoutNow">
+                <i class="bi bi-check2-circle"></i> Продать
+              </button>
+              <button class="btn btn-outline-primary btn-sm" id="scheduleLater">
+                <i class="bi bi-calendar2"></i> Запланировать
+              </button>
+              <button class="btn btn-outline-secondary btn-sm" id="clearCart">
+                <i class="bi bi-trash"></i> Очистить
+              </button>
+            </div>
+          </div>
+        </div>
+      </div>
+      
+      <!-- Action Buttons Panel -->
+      <div class="card">
+        <div class="card-body p-2">
+          <div class="row g-2">
+            <div class="col-4">
+              <button class="btn btn-outline-secondary rounded-3 w-100" style="height: 60px;">
+              </button>
+            </div>
+            <div class="col-4">
+              <button class="btn btn-outline-secondary rounded-3 w-100" style="height: 60px;">
+              </button>
+            </div>
+            <div class="col-4">
+              <button class="btn btn-outline-secondary rounded-3 w-100" style="height: 60px;">
+              </button>
+            </div>
+            <div class="col-4">
+              <button class="btn btn-outline-secondary rounded-3 w-100" style="height: 60px;">
+              </button>
+            </div>
+            <div class="col-4">
+              <button class="btn btn-outline-secondary rounded-3 w-100" style="height: 60px;">
+              </button>
+            </div>
+            <div class="col-4">
+              <button class="btn btn-outline-secondary rounded-3 w-100" style="height: 60px;">
+              </button>
+            </div>
+            <div class="col-4">
+              <button class="btn btn-outline-secondary rounded-3 w-100" style="height: 60px;">
+              </button>
+            </div>
+            <div class="col-4">
+              <button class="btn btn-outline-secondary rounded-3 w-100" style="height: 60px;">
+              </button>
+            </div>
+            <div class="col-4">
+              <button class="btn btn-outline-secondary rounded-3 w-100" style="height: 60px;">
+              </button>
+            </div>
+          </div>
+        </div>
+      </div>
+    </div>
+  </div>
+</div>
+
+{% endblock %}
+
+{% block extra_js %}
+<!-- Hidden data containers for JavaScript -->
+<script id="categoriesData" type="application/json">{{ categories_json|safe }}</script>
+<script id="productsData" type="application/json">{{ products_json|safe }}</script>
+
+<script src="{% static 'pos/js/terminal.js' %}"></script>
+{% endblock %}

myproject/pos/urls.py

@@ -0,0 +1,9 @@
+# -*- coding: utf-8 -*-
+from django.urls import path
+from . import views
+
+app_name = 'pos'
+
+urlpatterns = [
+    path('', views.pos_terminal, name='terminal'),
+]

myproject/pos/views.py

@@ -0,0 +1,30 @@
+# -*- coding: utf-8 -*-
+from django.shortcuts import render
+from django.contrib.auth.decorators import login_required
+from products.models import Product, ProductCategory
+import json
+
+
+@login_required
+def pos_terminal(request):
+    """
+    Tablet-friendly POS screen prototype.
+    Shows categories and in-stock products for quick tap-to-add.
+    """
+    categories_qs = ProductCategory.objects.filter(is_active=True)
+    products_qs = Product.objects.filter(in_stock=True).prefetch_related('categories')
+
+    categories = [{'id': c.id, 'name': c.name} for c in categories_qs]
+    products = [{
+        'id': p.id,
+        'name': p.name,
+        'price': str(p.actual_price),
+        'category_ids': [c.id for c in p.categories.all()]
+    } for p in products_qs]
+
+    context = {
+        'categories_json': json.dumps(categories),
+        'products_json': json.dumps(products),
+        'title': 'POS Terminal',
+    }
+    return render(request, 'pos/terminal.html', context)

myproject/templates/navbar.html

@@ -39,7 +39,7 @@
                         <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 disabled" href="#" tabindex="-1" aria-disabled="true">Касса</a>
+                        <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>