Django入门3 简单留言板项目案例及mysql驱动的安装配置
新建jangostart项目
使用manager.py新建app即单独的应用
创建一个message应用
manage.py@djangostart > startapp message
如果app新建多了都在djangostart下，为了区分apps，新建apps目录将message拖入apps文件夹中
引入message需要
From apps.message import views，如果觉得麻烦可以将apps source root
进入django的项目目录，运行会报错
(testvir2) D:\python\djangostart>
Source root配置到settings中
安装mysql驱动
(testvir2) D:\python\djangostart>pip install mysql-python
报错：下载驱动
https://www.lfd.uci.edu/~gohlke/pythonlibs/#mysql-python
下载MySQL_python-1.2.5-cp27-none-win_amd64.whl 拷贝到虚拟环境当前目录
运行安装
如果要用python3进行开发需要用mysqlclient，接口其实是一样的
配置templates为相对路径：配置settings文件
'DIRS': [os.path.join(BASE_DIR, 'templates')],
Error fetching command 'collectstatic': You're using the staticfiles app without having set the STATIC_ROOT setting to a filesystem path.
Command 'collectstatic' skipped
把static目录加入settings.py配置文件中否则css样式无法正常加载
STATICFILES_DIRS = [ os.path.join(BASE_DIR, 'static') ]
使用manage.py生成django默认表结构
makemigrations
migrate
设计关于留言板message的models
Settings文件中注册apps.message
# _*_ coding:utf-8 from __future__ import unicode_literals from django.db import models # Create your models here. class UserMessage(models.Model): name = models.CharField(max_length=20, verbose_name=u"用户名") email = models.EmailField(verbose_name=u"邮箱") address = models.CharField(max_length=100, verbose_name=u"联系地址") message = models.CharField(max_length=500, verbose_name=u"留言信箱") class Meta: verbose_name = u"用户留言信箱"
根据models生成表
makemigrations message
migrate message
查看表结构
留言板views.html
# _*_ coding:utf-8 _*_ from django.shortcuts import render # Create your views here. from .models import UserMessage def getform(request): # all_messages = UserMessage.objects.filter(name="jack02", address="杭州") # # for message in all_messages: # # 删除信息 # # message.delete() # print message.name # 提交数据 # user_message = UserMessage() # user_message.name = "jack" # user_message.message = "hello jack python" # user_message.address = "杭州" # user_message.email = "jack2019@163.com" # user_message.object_id = "hello02" # user_message.save() # if request.method == "POST": # name = request.POST.get('name', '') # message = request.POST.get('message',) # address = request.POST.get('address', ) # email = request.POST.get('email', ) # # user_message = UserMessage() # user_message.name = name # user_message.message = message # user_message.address = address # user_message.email = "jack2019@163.com" # user_message.object_id = "hello03" # user_message.save() message = None all_messages = UserMessage.objects.filter(name="jacktest") if all_messages: message = all_messages[0] return render(request, "message_form.html",{ "my_message": message })
templates/message_form.html
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title></title> <link rel="stylesheet" href="/static/css/style.css"> </head> <body> <form action="{% url 'go_form' %}" method="post" class="smart-green"> <h1>留言信息 <span>请留下你的信息.</span> </h1> <label> <span>姓名 :</span> <input id="name" type="text" value="{% ifequal my_message.name|slice:'4' 'jackt' %}jackhastest{% else %}jack has not test{% endifequal %}" name="name" class="error" placeholder="请输入您的姓名"/> <div class="error-msg"></div> </label> <label> <span>邮箱 :</span> <input id="email" type="email" value="{{ my_message.email }}" name="email" placeholder="请输入邮箱地址"/> <div class="error-msg"></div> </label> <label> <span>联系地址 :</span> <input id="address" type="text" value="{{ my_message.address }}" name="address" placeholder="请输入联系地址"/> <div class="error-msg"></div> </label> <label> <span>留言 :</span> <textarea id="message" name="message" placeholder="请输入你的建议">{{ my_message.message }}</textarea> <div class="error-msg"></div> </label> <div class="success-msg"></div> <label> <span> </span> <input type="submit" class="button" value="提交"/> </label> {% csrf_token %} </form> </body> </html>
# 路由配置 djangostart\djangostart\urls.py
from django.conf.urls import url from django.contrib import admin from apps.message.views import getform urlpatterns = [ url(r'^admin/', admin.site.urls), url(r'^form/$', getform, name='go_form'), url(r'^formtest', admin.site.urls) ]
