add product creation page and search filters

4 files changed, 122 insertions, 2 deletions

diff --git a/core/templates/core/login.html b/core/templates/core/login.html
index c17f521..098a9fd 100644
--- a/core/templates/core/login.html
+++ b/core/templates/core/login.html
@@ -27,5 +27,7 @@
         <input type="password" name="password">
         <button type="submit" class="btn">Войти</button>
     </form>
+
+    <a href="{% url 'product_list' %}">Войти как гость</a>
 </div>
 {% endblock %}
diff --git a/core/templates/core/product_form.html b/core/templates/core/product_form.html
new file mode 100644
index 0000000..81a7075
--- /dev/null
+++ b/core/templates/core/product_form.html
@@ -0,0 +1,15 @@
+{% extends 'core/base.html' %}
+
+{% block title %}{% if is_edit %}Редактирование{% else %}Добавление{% endif %} товара - ОООБувь{% endblock %}
+
+{% block h1 %}{% if is_edit %}Редактирование{% else %}Добавление{% endif %} товара{% endblock %}
+
+{% block content %}
+<div>
+    <form method="post" enctype="multipart/form-data">
+        {% csrf_token %}
+        {{ form }}
+        <button type="submit" class="btn">Сохранить</button>
+    </form>
+</div>
+{% endblock %}
diff --git a/core/templates/core/product_list.html b/core/templates/core/product_list.html
index ac4b8c7..ad7a5bf 100644
--- a/core/templates/core/product_list.html
+++ b/core/templates/core/product_list.html
@@ -5,6 +5,48 @@
 {% block h1 %}Каталог товаров{% endblock %}
 
 {% block content %}
+{% if user.role.name == "Администратор" or user.role.name == "Менеджер" %}
+<div>
+    <form method="get" style="display: flex;">
+        <div>
+            <label>Поиск:</label><br/>
+            <input type="text" name="search" value="{{ current_search }}" placeholder="Найти..." oninput="clearTimeout(this.delay); this.delay = setTimeout(() => this.form.submit(), 500);">
+        </div>
+
+        <div>
+            <label>Поставщик:</label><br/>
+            <select name="supplier" onchange="this.form.submit()">
+                <option value="all">Все поставщики</option>
+                {% for supplier in suppliers %}
+                supplier.id|stringformat:"i"
+                <option value="{{ supplier.id }}" {% if current_supplier == supplier.id|stringformat:"i" %}selected{% endif %}>{{ supplier.name }}</option>
+                {% endfor %}
+            </select>
+        </div>
+
+        <div>
+            <label>Сортировка:</label><br/>
+            <select name="sort" onchange="this.form.submit()">
+                <option value="">Без сортировки</option>
+                <option value="asc" {% if current_sort == "asc" %}selected{% endif %}>По возрастанию</option>
+                <option value="desc" {% if current_sort == "desc" %}selected{% endif %}>По убыванию</option>
+            </select>
+        </div>
+
+        {% comment %}
+        <div style="margin-left: 10px;">
+            <a href="{% url 'order_list' %}" class="btn" style="background-color: #5bc0de;">Заказы</a>
+        </div>
+        {% endcomment %}
+
+        {% if user.role.name == 'Администратор' %}
+        <div style="margin-left: auto;">
+            <a href="{% url 'product_create' %}" class="btn">Добавить товар</a>
+        </div>
+        {% endif %}
+    </form>
+</div>
+{% endif %}
 <div>
     {% for product in products %}
     <div class="product-card
diff --git a/core/views.py b/core/views.py
index 6957abc..f090d81 100644
--- a/core/views.py
+++ b/core/views.py
@@ -1,8 +1,15 @@
+from typing import Any
+
 from django.shortcuts import render
-from django.views.generic import ListView
+from django.views.generic import ListView, CreateView, UpdateView
+from django.urls import reverse_lazy
 from django.contrib.auth.views import LoginView
+from django.contrib import messages
+from django.db.models import Q
+from django.contrib.auth.mixins import UserPassesTestMixin
 
-from .models import Product
+from .models import Product, Supplier
+from .forms import ProductForm
 
 class UserLoginView(LoginView):
     template_name = "core/login.html"
@@ -11,3 +18,57 @@ class ProductListView(ListView):
     model = Product
     template_name = "core/product_list.html"
     context_object_name = "products"
+
+    def get_queryset(self):
+        queryset = Product.objects.all().select_related("supplier")
+        search_query = self.request.GET.get("search", "")
+        if search_query:
+            queryset = queryset.filter(
+                Q(name__icontains=search_query)
+                | Q(description__icontains=search_query)
+                | Q(manufacturer__icontains=search_query)
+                | Q(category__icontains=search_query)
+            )
+        supplier_id = self.request.GET.get("supplier", "")
+        if supplier_id and supplier_id != 'all':
+            queryset = queryset.filter(supplier_id=supplier_id)
+        sort = self.request.GET.get("sort")
+        if sort == "asc":
+            queryset = queryset.order_by("quantity")
+        if sort == "desc":
+            queryset = queryset.order_by("-quantity")
+        return queryset
+
+    def get_context_data(self, **kwargs) -> dict[str, Any]:
+        context = super().get_context_data(**kwargs)
+        context["suppliers"] = Supplier.objects.all()
+        context["current_supplier"] = self.request.GET.get("supplier", "")
+        context["current_search"] = self.request.GET.get("search", "")
+        context["current_sort"] = self.request.GET.get("sort", "")
+
+        return context
+
+
+class AdminRequiredMixin(UserPassesTestMixin):
+    def test_func(self):
+        return (
+            self.request.user.is_authenticated
+            and self.request.user.role
+            and self.request.user.role == "Администратор"
+        )
+
+class ProductCreateUpdateMixin:
+    def get_context_data(self, **kwargs):
+        context = super().get_context_data(**kwargs)
+        context["all_suppliers"] = Supplier.objects.all()
+        return context
+    
+class ProductCreateView(AdminRequiredMixin, ProductCreateUpdateMixin, CreateView):
+    model = Product
+    form_class = ProductForm
+    template_name = "core/product_form.html"
+    success_url = reverse_lazy("product_list")
+
+    def form_valid(self, form):
+        messages.success(self.request, "Товар успешно добавлен")
+        return super().form_valid(form)