问题描述
我一直在无奈地尝试使它生效.
I've been trying hopelessly to get this to work.
我有一个包含EmbeddedObjects的ListField的模型，基本上它是拍卖中的一个项目，其中包含一个投标列表.典型的MongoDB方法.
I have a model that contains a ListField of EmbeddedObjects, basically it's an Item in an auction that contains a list of bids within it. Typycal MongoDB approach.
我知道ListField不会显示在管理员中，因为它不知道要显示什么小部件，它可能是任何东西的列表.那是有道理的.
I understand that ListField doesn't show up in the admin since it doesn't know what Widget to display, it could be a list of anything. That makes sense.
我已经在我的应用程序文件夹中创建了一个fields.py，并将其子类化为ListField，现在我在models.py中使用了它.
I've created a fields.py in my app folder and subclassed ListField and I'm now using this in my models.py
我的问题是:
- 从现在开始，如何继续操作，直到在管理页面的项目"部分下找到小部件，可以在其中将出价添加到所选的项目中?
这是我的模特.py
from django.db import models
from djangotoolbox.fields import ListField
from djangotoolbox.fields import EmbeddedModelField
from ebay_clone1.fields import BidsListField
class User(models.Model):
name = models.CharField(max_length=100)
email = models.EmailField(max_length=75)
def __unicode__(self):
return self.name
class Item(models.Model):
seller = models.ForeignKey(User, null=True, blank=True)
title = models.CharField(max_length=100)
text = models.TextField()
price = models.FloatField()
dated = models.DateTimeField(auto_now=True)
num_bids = models.IntegerField()
bids = BidsListField(EmbeddedModelField('Bid'))
item_type = models.CharField(max_length=100)
def __unicode__(self):
return self.title
class Bid(models.Model):
date_time = models.DateTimeField(auto_now=True)
value = models.FloatField()
bidder = models.ForeignKey(User, null=True, blank=True)
在我的fields.py中，我有:
In my fields.py I have:
from django.db import models
from djangotoolbox.fields import ListField
from djangotoolbox.fields import EmbeddedModelField
from django import forms
class BidsListField(ListField):
def formfield(self, **kwargs):
return None
class BidListFormField(forms.Field):
def to_python(self, value):
if value in validators.EMPTY_VALUES:
return None
return value
def validate(self,value):
if value == '':
raise ValidationError('Empty Item String?')
推荐答案
尝试一下?
class BidsListField(ListField):
def formfield(self, **kwargs):
return BidListFormField(**kwargs)
这篇关于Django-nonrel在管理中使用包含EmbeddedObjects的ListField的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！