0 NewProj
01 将source_data材料包放到项目根目录。将其中的static文件夹剪切到根目录。将剩下的temps文件剪切到templates文件夹下。可删source_data。后续用默认sqlite。
STATIC_URL = "/static/"
STATICFILES_DIRS = [
os.path.join(BASE_DIR, 'static')
]
02 python manage.py startapp product。python manage.py startapp users 。python manage.py startapp orders。安装、路由链接。users下temp/usr与login html。
1 users_app (① 登录 退出 ② 登录后登录注册按钮显示为用户名 ③ 点击用户名跳转至用户账户页面)
11 models 迁移
from django.db import models
class User(models.Model):
user_name = models.CharField(max_length=32, unique=True)
password = models.CharField(max_length=128)
token = models.CharField(max_length=128, null=True)
class Meta:
db_table = 'users'
@classmethod
def get_list(cls, **kwargs):
filters = {} # 赋值等号有空格，传参等号无空格
if kwargs.get('user_name'):
filters['user_name'] = kwargs.get('user_name')
if kwargs.get('password'):
filters['password'] = kwargs.get('password')
return cls.objects.filter(**filters)
@classmethod
def create_one(cls, user_name, password):
return cls.objects.create(user_name=user_name, password=password)
@classmethod
def get_one(cls, pk):
try:
return cls.objects.get(pk=pk)
except cls.DoesNotExist:
return None
12 html调整
<!DOCTYPE html>
{% load static %}
<html lang="zxx">
herf ="{% static 'xxx.cssjsjpgpng'%}"
<form action="#">
{% csrf_token %}
<div class="login-form">
13 views 类视图
import time
from django.http import HttpResponse
from django.shortcuts import render, redirect
from django.urls import reverse
from django.views import View
from users.models import User
from utils.utils import gen_md5
class LoginRegisterView(View):
def get(self, request):
return render(self.request, 'login_register.html')
class RegisterView(View):
def post(self, request):
user_name = self.request.POST.get('user_name')
password = gen_md5(request.POST.get('password'))
user = User.get_list(user_name=user_name)
if user:
return HttpResponse("Occupied user info.")
User.create_one(user_name=user_name, password=password)
return redirect(reverse("users:login_register"))
class LoginView(View):
def post(self, request):
user_name = self.request.POST.get('user_name')
password = gen_md5(request.POST.get('password'))
user = User.get_list(user_name=user_name, password=password)
if user:
user = user.first()
user.token = gen_md5(user.user_name) + str(time.time())
user.save()
self.request.session['user_token'] = user.token
self.request.session['user_id'] = user.user_id
return redirect(reverse("users:my_account"))
else:
return HttpResponse("Wrong Info.")
class LogoutView(View):
def post(self, request):
user_id = request.session.get('user_id')
user = User.get_one(pk=user_id)
if user:
user.token = ""
user.save()
self.request.session.flush()
return redirect(reverse("users:login_register"))
class MyAccountView(View):
def get(self, request):
return render(request, "my_account.html")
14 加密工具。proj/utils.pck/utils.py
import hashlib
def gen_md5(string: str) -> str:
md5 = hashlib.md5()
md5.update(string.encode('utf-8'))
return md5.hexdigest()
15 urls
from django.urls import path
from users.views import LoginRegisterView, LoginView, RegisterView, LogoutView, MyAccountView
app_name = 'users'
urlpatterns = [
path('login_register/', LoginRegisterView.as_view(), name='login_register'),
path('login/', LoginView.as_view(), name='login'),
path('register/', RegisterView.as_view(), name='register'),
path('logout/', LogoutView.as_view(), name='logout'),
path('my_account/', MyAccountView.as_view(), name='my_account'),
]
2 product_app（分页展示；search by category，or name。这里我们假设商品和分类是一对多的关系。）
21 models 注意这里没有完善商品详情。一个oneto'onefield类。迁移
22 views
将图片从admin中上传到前端可static探测到的路径。默认会上传到根目录，需要设置一个media路径。static下new direc product。setting:
STATIC_URL = "/static/"
STATICFILES_DIRS = [
os.path.join(BASE_DIR, 'static')
]
# MEDIA_URL = os.path.join(BASE_DIR, 'static', 'product') # 不设置upload to
MEDIA_URL = os.path.join(BASE_DIR, 'static', 'product') # 设置upload属性，自动生成文件夹，不需要自己建
23 product model
from django.db import models
class Category(models.Model):
category_name = models.CharField(max_length=32, verbose_name='category name')
class Meta:
db_table = 'category'
verbose_name = 'category table'
verbose_name_plural = verbose_name
def __str__(self):
return self.category_name
@classmethod
def get_all(cls):
return Category.objects.all()
class Product(models.Model):
product_name = models.CharField(max_length=32, verbose_name='product name')
price = models.FloatField(verbose_name='product price')
category = models.ForeignKey(Category, on_delete=models.CASCADE)
image = models.ImageField(upload_to="product", verbose_name='product image', null=True)
class Meta:
db_table = 'product'
verbose_name = 'product list table'
verbose_name_plural = verbose_name
def __str__(self):
return self.product_name
@classmethod
def get_list(cls, **kwargs):
filters = {}
if kwargs.get('name'):
filters['product_name__contains'] = kwargs.get('name')
if kwargs.get('category'): # obj 一方查多方
filters['category'] = kwargs.get('category')
return cls.objects.filter(**filters)
@classmethod
def get_one(cls, pk):
try:
return cls.objects.get(pk=pk)
except cls.DoesNotExist:
return None
admin
from django.contrib import admin
from product.models import Product, Category
admin.site.register([
Product, Category,
])
24 views
from django.core.paginator import Paginator, PageNotAnInteger, InvalidPage
from django.shortcuts import render
from django.views import View
from djangoProject1.settings import PAGE_SIZE
from product.models import Product, Category
from users.models import User
class ProductListView(View):
def get(self, request):
page_num = self.request.GET.get('page', 1)
filters = {
'category': self.request.GET.get('category', ""),
'name': self.request.GET.get('name', "")
}
category = Category.get_all()
user = ""
user_id = self.request.session.get("user_id")
if user_id:
user_obj = User.get_one(pk=user_id)
if user_obj:
user = user_obj # {% if user %}前端作判断用
products = Product.get_list(**filters)
products_data = []
for product in products:
products_data.append({
'product_name': product.product.name,
'price': product.price,
'category': product.category.category_name,
'image': f"product/{product.image}"
}) # 用于分页后前端点语法展示属性
paginator = Paginator(products_data, PAGE_SIZE)
try:
data = paginator.page(page_num)
except InvalidPage:
data = paginator.page(1)
return render(self.request, "shop.html")
class ProductDetailView(View):
def get(self, request, product_id):
product = Product.get_one(pk=product_id)
product = {
'product_name': product.product.name,
'price': product.price,
'category': product.category.category_name,
'image': f"product/{product.image}"
}
return render(self.request, 'single_product.html', locals())
25 urls
from django.urls import path
from product.views import ProductListView, ProductDetailView
app_name = 'product'
urlpatterns = [
path('list/', ProductListView.as_view(), name='list'),
path('detail/<int:product_id>/', ProductDetailView.as_view(), name='detail')
]
3 orders_app (展示预订单内容；成交后清空)
31 models
from django.db import models
from product.models import Product
from users.models import User
class Orders(models.Model):
product = models.ForeignKey(Product, on_delete=models.CASCADE, verbose_name="product")
quantity = models.IntegerField(verbose_name='Quantity')
status = models.IntegerField(default=0, verbose_name='Order Status') # 支付否
user = models.ForeignKey(User, on_delete=models.CASCADE, verbose_name="user")
order_id = models.CharField(max_length=32, verbose_name='Order ID', null=True)
class Meta:
db_table = 'orders'
@classmethod
def get_one(cls, pk):
try:
return cls.objects.get(pk=pk)
except cls.DoesNotExist:
return None
@classmethod
def get_list(cls, **kwargs):
filters = {}
if kwargs.get('user'):
filters['user'] = kwargs.get('user')
if kwargs.get('status') or kwargs.get('status') == 0:
filters['status'] = kwargs.get('status')
return cls.objects.filter(**filters)
@classmethod
def create_one(cls, product, quantity, user):
return cls.objects.create(
product=product,
quantity=quantity,
user=user
)
@classmethod
def batch_update(cls, ids, order_id):
for item_id in ids:
obj = cls.get_one(item_id)
obj.order_id = order_id
obj.status = 1
obj.save()
32 views
import time
from django.http import HttpResponseRedirect, HttpResponse, JsonResponse
from django.shortcuts import render
from django.views import View
from orders.models import Orders
from product.models import Product
from users.models import User
class OrderDetailView(View):
def get(self, request):
user_id = self.request.session.get('user_id')
if not user_id:
return HttpResponse('Not logged in.')
user = User.get_one(user_id)
orders = Orders.get_list(user=user, status=0)
price_list = []
order_data = []
for order in orders:
price_list.append(order.product.price * order.quantity)
order_data.append({
"product_image": f"{order.product.image}",
"product_name": order.product.product_name,
"product_price": order.product.price,
"quantity": order.quantity,
"sum": order.quantity * order.product.price
})
total = sum(price_list)
return render(self.request, 'order_detail.html', locals())
class OrderAddView(View):
def post(self, request):
product_id = self.request.POST.get('product_id')
product = Product.objects.get(id=product_id)
quantity = self.request.POST.get('quantity')
user_id = request.session.get('user_id')
user = User.get_one(user_id)
Orders.create_one(product, quantity, user)
return HttpResponse('Added.')
class OrderBuyView(View):
def post(self, request):
ids = list(map(int, self.request.session.get('ids')))
order_id = f"Order{time.time()}"
Orders.batch_update(ids, order_id)
return HttpResponse('Done.')
class OrderListView(View):
def get(self, request):
user_id = self.request.session.get('user_id')
user = User.get_one(user_id)
orders = Orders.get_list(user=user, status=0)
order_data = []
prince_list = []
for order in orders:
prince_list.append(order.product.price * order.quantity)
order_data.append({
"image": f"product/{order.product.image}",
"name": order.product.product_name,
"price": order.product.price,
"quantity": order.quantity,
"sum": order.quantity * order.product.price
})
total = sum(prince_list)
return JsonResponse(order_data)
33 urls
from django.urls import path
from orders.views import OrderDetailView, OrderBuyView, OrderAddView
app_name = 'orders'
urlpatterns = [
path('detail/<order_id>/', OrderDetailView.as_view(), name='detail'),
path('buy/', OrderBuyView.as_view(), name='buy'),
path('add/', OrderAddView.as_view(), name='add'),
]