Day4-课堂笔记-Django4

1.文件设置

1）djg1->settings->TEMPLATES->DIRS:

指定templates文件的路径，用于保存html文件
'DIRS': [os.path.join(BASE_DIR,'templates')]

2)djg1->settings->末尾添加：

添加static文件的路径，用于存放js,css,img等文件
STATICFILES_DIRS=[
os.path.join(BASE_DIR,'static')
]

2.创建路由分支

djg1->urls->urlpatterns:
url(r'app/',include('app.urls',namespace='app')),
app->urls-urlpatterns:
例：
urlpatterns=[
url(r'^stu/',views.index,name='index'),
]

3.app->urls.py

from django.conf.urls import url

from app import views

urlpatterns=[
    url(r'^stu/',views.index,name='index'),
    # url(r'^del_stu/(\d+)/',views.del_stu,name='del_stu'),
    url(r'^del_stu/(?P\d+)/', views.del_stu, name='del_stu'),
    url(r'^look_stu/(?P\d+)/',views.look_stu,name='look_stu'),
    url(r'^re_stu/',views.re_stu,name='re_stu'),
]

4.app->views.py

from django.http import HttpResponse, HttpResponseRedirect
from django.shortcuts import render
from django.urls import reverse

from app.models import StudentInfo, Student, Grade, Course

#导出数据库数据
def index(request):
    if request.method=='GET':
        # 返回字符
        # return HttpResponse('hello')
        # 返回html页面
        stus=Student.objects.all()
        # return render(request,'index.html',{'stus':stus})
        return render(request, 'stus.html', {'students': stus})

#删除数据
def del_stu(request,s_id):
    if request.method=='GET':
        # 删除方法
        # 1.获取url中的id值
        # id=request.GET.get('id')
        # 2.获取id对应的学生对象
        stu=Student.objects.get(pk=s_id)
        # 3.对象.delete()
        stu.delete()
        # return HttpResponseRedirect('/app/stu/')
        return HttpResponseRedirect(reverse('app:index'))
        # return HttpResponseRedirect(index())
#查询数据
def look_stu(request,s_id):
    if request.method=='GET':
        stu=Student.objects.get(pk=s_id)
        stu_info=stu.stu_info
        g=stu.g
        c=stu.c.all()
        # return HttpResponse(s_id)
        return render(request,'sel.html',{'stu':stu,'stu_info':stu_info,'g':g,'c':c})


#返回操作
def re_stu(request):
    if request.method=='GET':
        return HttpResponseRedirect(reverse('app:index'))

5.templates

1)base.html创建父类模板

    
    

    {% block extCss %}
    {% endblock %}

    {% block extJs %}
    {% endblock %}



{% block content %}
{% endblock %}

2)base_main.html添加js样式

{% extends 'base.html' %}

{% block extJs %}


{% endblock %}

3.index.htm 关于lDjango的用法

    
    

    {# 方法一: #}
    
   

    {# 方法二: #}
    {% load static %}
    
    


你好啊



        {#  #}
    
        {% comment %}多行注解 软件不会解析{% endcomment %}
        {#  单行注解 软件不会解析 #}
        
        {% for stu in stus %}
        
            {% comment %}
            
            {% endcomment %}
        
        {% endfor %}
    

    

        
order
        
id
        
name
        
age
sex
    

            
{{forloop.revcounter0}}
            
{{stu.id}}
            
{{stu.s_name}}
            
{{stu.s_age}}
{{stu.s_sex}}

3)stu.html显示数据

{% extends 'base_main.html' %}
{% block title %}
学生列表页面
{% endblock %}

{% block extJs %}
{{ block.super }}

{% endblock %}

{% block content %}



        {% for stu in students %}
        
        {% endfor %}
    

    

        
order
        
id
        
name
        
age
        
operate
    
    

            
{{forloop.revcounter0}}
            
{{stu.id}}
            
{{stu.s_name}}
            
{{stu.s_age}}
            

                
                
                删除
                |
                查看
        


{% endblock %}

4）sel.html 显示查询数据库

{% extends 'base_main.html'  %}

{% block title %}
查询学生信息
{% endblock %}

{% block content %}
    
{{stu.id}}
    
{{stu.s_name}}
    
{{stu.s_age}}
    
{{stu.s_sex}}
    
{{stu.creat_tim}}
    
{{stu.operate.time}}
    
{{stu.chinese}}
    
{{stu.math}}

    
{{stu_info.phone}}
    
{{stu_info.address}}

    
{{g.g_name}}

    {% for data in c %}
        
{{data.c_name}}
    {% endfor %}
    返回
{% endblock %}