如何在Django管理页面中添加多个自动完成功能

Question

我正在使用内置函数为许多字段建立自动完成功能：https : //docs.djangoproject.com/en/2.0/ref/contrib/admin/#django.contrib.admin.ModelAdmin.autocomplete_fields

我有以下模型：

 class Ipaddress(models.Model):
        ipaddress=models.CharField(max_length=20)
        slug = models.SlugField(unique=True)
        machinename=models.CharField(max_length=500)
        user=models.CharField(max_length=200)
        department= models.ForeignKey('Department',on_delete=models.CASCADE,default='Empty')
        location= models.ForeignKey('Location', on_delete=models.CASCADE)
        updated = models.DateField("Date Updated",null=True)
        note =models.TextField()

    def __str__(self):
        return self.ipaddress[:50]

class Department(models.Model):
    name= models.CharField(max_length=100, unique=True)
    def __str__(self):
        return self.name[:50] 

class Location(models.Model):
    description= models.CharField(max_length=100, unique=True)
    def __str__(self):
        return self.description[:50] 

管理员页面在这里：

from django.contrib import admin
from pages.models import  Ipaddress, DeviceGroup, Location,Department,
from django_admin_listfilter_dropdown.filters import DropdownFilter, RelatedDropdownFilter

class IpaddressAdmin(admin.ModelAdmin):
        prepopulated_fields = {'slug': ('ipaddress',)}

        search_fields = ['ipaddress']
        autocomplete_fields = ['department',]

        list_display = ('ipaddress', 'machinename', 'user', 'department','location','updated',)
        list_filter = (
        ('user', DropdownFilter),
        ('department', RelatedDropdownFilter),
        ('location', RelatedDropdownFilter),

    )

如果我更改了 autocomplete_fields = ['location',]它，但是当我尝试更改它的部门时它不起作用。我也想同时具有部门和位置的自动完成功能。

我看到的错误是当我设置 autocomplete_fields = ['department',]

ERRORS:<class 'pages.admin.IpaddressAdmin'>: (admin.E040) ModelAdmin must define    
"search_fields", because it's referenced by 
IpaddressAdmin.autocomplete_fields.

任何想法如何解决此错误，我想这样的事情：

 autocomplete_fields = ['department', 'location','user',]

Answer 1

根据您在此处链接中引用的文档

您必须在相关对象上定义search_fields，ModelAdmin因为自动完成搜索会使用它。

在您的情况下以及从出现的错误中，这意味着您需要search_fields在相关对象上定义您的对象（在您的案例Department和Location ModelAdmin类中，因为自动完成搜索使用它）。

因此，将是这样的。

class DepartmentAdmin(admin.ModelAdmin):
    search_fields = ['name']

class LocationAdmin(admin.ModelAdmin):
    search_fields = ['description']

您的autocomplete_fields就IPAddressAdmin可以这样了。

 autocomplete_fields = ['department', 'location',]