一、通过url方式实现多对多的:增加,删除,编辑
代码目录:
urls.py
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"""django_one URL Configuration The `urlpatterns` list routes URLs to views. For more information please see: https://docs.djangoproject.com/en/1.10/topics/http/urls/
Examples: Function views 1. Add an import: from my_app import views
2. Add a URL to urlpatterns: url(r'^$', views.home, name='home')
Class-based views 1. Add an import: from other_app.views import Home
2. Add a URL to urlpatterns: url(r'^$', Home.as_view(), name='home')
Including another URLconf 1. Import the include() function: from django.conf.urls import url, include
2. Add a URL to urlpatterns: url(r'^blog/', include('blog.urls'))
""" from django.conf.urls import url from django.contrib import admin from app01.views import classes from app01.views import students from app01.views import teachers urlpatterns = [ url(r'^admin/', admin.site.urls),
url(r'^get_classes.html$', classes.get_classes),
url(r'^add_classes.html$', classes.add_classes),
url(r'^del_classes.html$', classes.del_classes),
url(r'^edit_classes.html$', classes.edit_classes),
url(r'^get_students.html$', students.get_students),
url(r'^add_students.html$', students.add_students),
url(r'^del_students.html$', students.del_students),
url(r'^edit_students.html$', students.edit_students),
url(r'^get_teachers.html$', teachers.get_teachers),
url(r'^add_teachers.html$', teachers.add_teachers),
url(r'^del_teachers.html$', teachers.del_teachers),
url(r'^edit_teachers.html$', teachers.edit_teachers),
] |
models.py
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from django.db import models # Create your models here. class Classes(models.Model): """
班级表,男
"""
titile = models.CharField(max_length=32)
m = models.ManyToManyField("Teachers")
class Teachers(models.Model): """
老师表,女
"""
name = models.CharField (max_length=32)
""" cid_id tid_id 1 1
1 2
6 1
1000 1000
""" # class C2T(models.Model): # cid = models.ForeignKey(Classes) # tid = models.ForeignKey(Teachers) class Student(models.Model): username = models.CharField(max_length=32)
age = models.IntegerField()
gender = models.BooleanField()
cs = models.ForeignKey(Classes)
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teachers.py
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from django.shortcuts import render from django.shortcuts import redirect from app01 import models def get_teachers(request): cls_list = models.Classes.objects.all()
return render(request,'get_teachers.html',{'cls_list':cls_list})
def add_teachers(request): if request.method == "GET":
teachers_list = models.Teachers.objects.all()
return render(request, 'add_teachers.html',{'teachers_list':teachers_list})
elif request.method == "POST":
nid = request.POST.get('titile')
# [1,2,3,4,]
teachers_id = request.POST.getlist('teachers_id')
# 10
obj = models.Classes.objects.create(titile = nid)
# 10 1
# 10 2
# 10 3
# 10 4
obj.m.add(*teachers_id)
return redirect('get_teachers.html')
def del_teachers(request): nid = request.GET.get('nid')
models.Classes.objects.filter(id=nid).delete()
return redirect('get_teachers.html')
def edit_teachers(request): if request.method == "GET":
nid = request.GET.get('nid')
obj = models.Classes.objects.filter(id=nid).first()
teachers_list = models.Teachers.objects.all()
return render(request,'edit_teachers.html',{'nid':nid,'obj':obj,'teachers_list':teachers_list})
elif request.method == "POST":
n = request.POST.get('nid')
t = request.POST.get('titile')
teachers_id = request.POST.getlist('teachers_id')
obj = models.Classes.objects.filter(id=n).update(
id=n,
titile=t,
)
obj.m.add(*teachers_id)
return redirect('get_teachers.html')
|
添加功能
get_teachers.html
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<! DOCTYPE html>
< html lang="en">
< head >
< meta charset="UTF-8">
< title >Title</ title >
</ head >
< body >
< div >
< a href="/add_teachers.html">添加</ a >
</ div >
< div >
< table border="1">
< thead >
< tr >
< th >ID</ th >
< th >班级</ th >
< th >分配老师</ th >
< th >操作</ th >
</ tr >
</ thead >
< tbody >
{% for row in cls_list %}
< tr >
< td >{{ row.id }}</ td >
< td >{{ row.titile }}</ td >
< td >
{% for cls in row.m.all %}
{{ cls.name }}
{% endfor %}
</ td >
< td >
< a href="/del_teachers.html?nid={{ row.id }}">删除</ a >
|
< a href="/edit_teachers.html?nid={{ row.id }}">编辑</ a >
</ td >
</ tr >
{% endfor %}
</ tbody >
</ table >
</ div >
</ body >
</ html >
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添加功能
add_teachers.html
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<! DOCTYPE html>
< html lang="en">
< head >
< meta charset="UTF-8">
< title >Title</ title >
</ head >
< body >
< form action="add_teachers.html" method="POST">
{% csrf_token %}
< p >< input type="text" name="titile" placeholder="班级" /></ p >
< p >
< select name="teachers_id" multiple="multiple" >
{% for teachers in teachers_list %}
< option value="{{ teachers.id}}">{{ teachers.name }}</ option >
{% endfor %}
</ select >
</ p >
< input type="submit" value="提交" />
</ form >
</ body >
</ html >
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编辑功能
edit_teachers.html
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<! DOCTYPE html>
< html lang="en">
< head >
< meta charset="UTF-8">
< title >Title</ title >
</ head >
< body >
< form action="/edit_teachers.html?nid={{ nid }}" method="POST">
{% csrf_token %}
< p >< input type="text" name="titile" placeholder="班级" value="{{ obj.titile }}"/></ p >
< p >
< select name="teachers_id" multiple="multiple" >
{% for teachers in teachers_list %}
< option value="{{ teachers.id}}">{{ teachers.name }}</ option >
{% endfor %}
</ select >
</ p >
< input type="submit" value="提交">
</ form >
</ body >
</ html >
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