在 django admin 中过滤下拉值 [英] filtering dropdown values in django admin

问题描述

class Foo(models.Model):
    title = models.TextField()
    userid = models.IntegerField()
    image = models.CharField(max_length=100)
    def __unicode__(self):
       return self.title

class Bar(models.Model):
    foo = models.ForeignKey(Foo, related_name='Foo_picks', unique=True)
    added_on = models.DateTimeField(auto_now_add=True)

在 Django 管理员 add_view 中:

In Django admin add_view:

def add_view(self, *args, **kwargs):
    self.exclude = ("added_on",)
    self.readonly_fields = ()
    return super(Bar, self).add_view(*args, **kwargs)

因此，管理添加视图中显示的字段是 foo 这是一个下拉列表并显示所有标题.Foo 的某些 title 保持为空或 ''.所以，下拉列表有很多空值，因为它的标题是空的.我想过滤掉那些空值.

So, Field shows in the admin add view is foo Which is a drop down list and shows all the titles. Some title of Foo remains empty or ''. So, drop down list have lots of empty value because it title is empty. I want to filter out those empty values.

推荐答案

您可以为 ModelAdmin 提供您自己的表单，并为 foo 字段提供自定义查询集.

You can provide your own form for ModelAdmin, with custom queryset for foo field.

from django import forms
from django.contrib import admin

#Create custom form with specific queryset:
class CustomBarModelForm(forms.ModelForm):
    class Meta:
        model = Bar
        fields = '__all__'

    def __init__(self, *args, **kwargs):
        super(CustomBarModelForm, self).__init__(*args, **kwargs)
        self.fields['foo'].queryset = Foo.objects.filter(title__isnull=False)# or something else

# Use it in your modelAdmin
class BarAdmin(admin.ModelAdmin):
    form = CustomBarModelForm

这样的东西...

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