django 王中王8之踏青撒花

setting：

STATIC_URL = '/static/'

STATICFILES_DIRS = [
os.path.join(BASE_DIR, 'static'),
]

UPLOAD_ROOT = os.path.join(BASE_DIR,'upload')

主urls：

from django.contrib import admin
from django.urls import path,re_path,include
from django.views.static import serve
from three.settings import UPLOAD_ROOT

urlpatterns = [
# path('admin/', admin.site.urls),
re_path('^upload/(?P<path>.*)$',serve,{'document_root':UPLOAD_ROOT}),
path('web1/',include('web1.urls')),
]

副urls：

from django.contrib import admin
from django.urls import path,re_path,include
from web1 import views

urlpatterns = [
path('index/',views.Index.as_view()),
path('add_cate/',views.AddCate.as_view()),
path('add_goods/',views.AddGoods.as_view()),
path('show_goods/',views.ShowGoods.as_view()),

]

models：

from django.db import models

# Create your models here.

class Cate(models.Model):
id = models.AutoField(primary_key=True)
name = models.CharField(max_length=50)

class Meta:
db_table = 'cate'

class Goods(models.Model):
id = models.AutoField(primary_key=True)
image_url = models.CharField(max_length=255)
title = models.CharField(max_length=255)
price = models.DecimalField(max_digits=7,decimal_places=2)
content = models.CharField(max_length=255)
cate = models.ForeignKey(Cate,on_delete=models.CASCADE)

class Meta:
db_table = 'goods'

创建自定义过滤器

文件夹 templatetags

创建文件mt_filter

# -*- encoding: utf-8 -*-
from django import template
register = template.Library()

@register.filter
def my_str(val):
return "$"+str(val)+'起'

views：

from django.shortcuts import render,HttpResponse,redirect
from django.views import View
from web1.models import *
from web.views import uploadfile
import json
# Create your views here.

class AddCate(View):
def get(self,request):
return render(request,'qimo2/add_cate.html')
def post(self,request):
if request.method == 'POST':
name = request.POST.get('name')
if name:
cate = Cate(name=name)
cate.save()
return redirect('/web1/add_cate/')

class AddGoods(View):
def get(self,request):
cate = Cate.objects.all()
return render(request,'qimo2/add_goods.html',locals())
def post(self,request):
title = request.POST.get('title')
image_url = request.FILES.get('image_url')
uploadfile(image_url)
price = request.POST.get('price')
content = request.POST.get('content')
cate = request.POST.get('cate')
goods = Goods(title=title,image_url='/upload/'+image_url.name,
price=price,content=content,cate_id=cate)
goods.save()
return redirect('/web1/add_goods/')

class Index(View):
def get(self,request):
cate = Cate.objects.all()
return render(request,'qimo2/index.html',locals())
def post(self,request):
mes = {}
id = request.POST.get('id')
if id:
goods = Goods.objects.filter(cate=id).all()
goodlist = []
for i in goods:
dict = {}
dict['image_url'] = i.image_url
dict['title'] = i.title
dict['id'] = i.id
dict['price'] = float(i.price)
goodlist.append(dict)
mes['code'] = 200
mes['goodlist'] = goodlist
return HttpResponse(json.dumps(mes))

class ShowGoods(View):
def get(self,request):
id = request.GET.get('id')
if id:
goods = Goods.objects.filter(id=id)
return render(request,'qimo2/show_goods.html',locals())

html：

add_cate:

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<form action="" method="post">
添加分类：<input type="text" name="name"><br>
<button type="submit">添加</button>
</form>
<a href="/web1/add_goods/">点击进入添加商品</a><br>
<a href="/web1/index/">点击进入首页</a>
</body>
</html>

add_goods:

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<form action="" method="post" enctype="multipart/form-data">
添加标题：<input type="text" name="title"><br>
添加价格：<input type="text" name="price"><br>
添加内容：<input type="text" name="content"><br>
选择分类：
<select name="cate" id="">
{% for i in cate %}
<option value="{{ i.id }}">{{ i.name }}</option>
{% endfor %}
</select><br>
选择图片：<input type="file" name="image_url">
<button type="submit">添加</button>
</form>
<a href="/web1/add_cate/">点击进入添加分类</a>
<a href="/web1/index/">点击进入首页</a>
</body>
</html>

index:

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script type="text/javascript" src="/static/jquery-1.12.4.min.js"></script>
</head>

<body>

{% for i in cate %}
<a href="javascript:get_goods({{ i.id }})">{{ i.name }}</a>
{% endfor %}
<div class="goods">

</div>
</body>

show_goods:

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
{% load my_filter %}
<table border="2">
<tr>
<td>照片</td>
<td>标题</td>
<td>介绍</td>
<td>价格</td>
</tr>
<tr>
{% for i in goods %}
<td><img src="{{ i.image_url }}" alt="" width="70ps" height="70px"></td>
<td>{{ i.title }}</td>
<td>{{ i.content }}</td>
<td>{{ i.price | my_str}}</td>
{% endfor %}
</tr>
</table>
</body>
</html>

django 王中王8之踏青撒花

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