Django框架学习笔记（13.获取单表单数据的三种方式）

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一个小示例：

创建Django工程，创建app，注册app，创建好数据库后加入些数据

project下的urls.py:

from django.contrib import adminfrom django.urls import pathfrom django.conf.urls import urlfrom app01 import viewsurlpatterns = [    path('admin/', admin.site.urls),    url(r'^business$', views.business),]

app下的views.py:

from django.shortcuts import renderfrom app01 import models# Create your views here.def business(request):    v1 = models.Business.objects.all()    v2 = models.Business.objects.all().values('id', 'caption')    v3 = models.Business.objects.all().values_list('id', 'caption')    return render(request, 'business.html', {'v1': v1, 'v2': v2, 'v3': v3})

app下的models.py:

from django.db import models# Create your models here.class Business(models.Model):    #默认id列    caption = models.CharField(max_length=32)    code = models.CharField(max_length=32)class Host(models.Model):    nid = models.AutoField(primary_key=True)    hostname = models.CharField(max_length=32, db_index=True)    ip = models.GenericIPAddressField(db_index=True)    port = models.IntegerField()    b = models.ForeignKey(to="Business", to_field='id', on_delete=models.CASCADE)

business.html:

<!DOCTYPE html><html lang="en"><head>    <meta charset="UTF-8">    <title>Title</title></head><body><h1>业务线列表(对象)</h1><ul>    {% for row in v1 %}        <li>{{ row.id }}-{{ row.caption }}-{{ row.code }}</li>    {% endfor %}</ul><h1>业务线列表(字典)</h1><ul>    {% for row in v2 %}        <li>{{ row.id }}-{{ row.caption }}</li>    {% endfor %}</ul><h1>业务线列表(元组)</h1><ul>    {% for row in v3 %}        <li>{{ row.0 }}-{{ row.1 }}</li>    {% endfor %}</ul></body></html>

页面效果：

下一篇继续接上这里

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