Django admin.py 在修改/添加表单界面显示额外字段的方法

from django.db import models

# Create your models here.


class Blog(models.Model):
  Name = models.CharField(max_length=350)
  def __unicode__(self):
    return str("Name:"+self.Name)

class BlogExtra(Blog):
  NameTwo = models.CharField(max_length=350)
  NameThree = models.CharField(max_length=350)
  def __unicode__(self):
    return str("Name:"+self.Name+" NameTwo:"+self.NameTwo+" NameThree:"+self.NameThree)

# conding = UTF-8

from django.contrib import admin

from blogs.models import *

class BlogExtraInline(admin.StackedInline):
  model = BlogExtra
  fields = ['NameTwo']  #只显示NameTwo这个字段


class BlogAdmin(admin.ModelAdmin):
  list_display = ('id', 'Name')  

  def get_form(self, request, obj=None, **args):
    defaults = {}
    if obj is not None:
      if (len(BlogExtra.objects.filter(id=obj.id)) == 1):
        self.inlines = [BlogExtraInline]    #设置内联
      else:
        self.inlines = []           #如果不是继承，就取消设置

    defaults.update(args)
    return super(BlogAdmin, self).get_form(request, obj, **defaults)


admin.site.register(Blog, BlogAdmin)