Question

我有以下从auth扩展的models.py -

from django.db import models

# Create your models here.

from django.contrib.auth.models import User

class FileIndex(models.Model):
    filename = models.CharField(max_length=256)
    filetype = models.CharField(max_length=16)
    vendorid = models.IntegerField()
    vendorname = models.CharField(max_length=256)
    tablename = models.CharField(max_length=256)
    class Meta:
        db_table = 'file_index'
        verbose_name = 'File/Vendor Index'
        verbose_name_plural = 'File/Vendor Indicies'
    def __str__(self):
        return self.filename

class UserFile(models.Model):
    userid_id = models.ManyToManyField(User)
    fileid_id = models.ManyToManyField(FileIndex)
    grant_date = models.DateTimeField()
    revoke_date = models.DateTimeField(blank=True)
    class Meta:
        db_table = 'auth_files'
        verbose_name = 'User File Matrix'
        verbose_name_plural = 'User File Matricies'

然后我的admin.py -

抱怨

from django.contrib import admin
from django.contrib.auth.admin import UserAdmin
from django.contrib.auth.models import User
from django.db.models import Q
from api.models import *

# Register your models here.

class FileIndexAdmin(admin.ModelAdmin):
    # ...
    list_display = ('vendorname', 'filename')
    list_filter = ['vendorname', 'filename']
    search_fields = ['filename']

class UserFileAdmin(admin.ModelAdmin):
    # ...
    list_display = ('userid', 'fileid', 'grant_date', 'revoke_date')
    list_filter = ['userid']

admin.site.register(UserFile, UserFileAdmin)
admin.site.register(FileIndex, FileIndexAdmin)

然后崩溃并显示以下消息 -

django.core.exceptions.ImproperlyConfigured: UserFileAdmin.list_display[0], 'userid_id' is not a callable or an attribute of 'UserFileAdmin' or found in the model 'UserFile'.

如果我删除＆＃39; userid＆＃39;和＆＃39; fileid＆＃39;从list_display开始，它会加载，但在尝试选择要添加/删除的用户/文件时会中断。

这些模型的SQL如下 -

CREATE TABLE auth_files
(
  id serial NOT NULL,
  userid_id integer NOT NULL,
  fileid_id integer NOT NULL,
  grant_date timestamp with time zone NOT NULL,
  revoke_date timestamp with time zone NOT NULL,
  CONSTRAINT auth_files_pkey PRIMARY KEY (id),
  CONSTRAINT auth_files_fileid_id_fkey FOREIGN KEY (fileid_id)
      REFERENCES file_index (id) MATCH SIMPLE
      ON UPDATE NO ACTION ON DELETE NO ACTION DEFERRABLE INITIALLY DEFERRED,
  CONSTRAINT auth_files_userid_id_fkey FOREIGN KEY (userid_id)
      REFERENCES auth_user (id) MATCH SIMPLE
      ON UPDATE NO ACTION ON DELETE NO ACTION DEFERRABLE INITIALLY DEFERRED
)
WITH (
  OIDS=FALSE
);
ALTER TABLE auth_files
  OWNER TO rdsadmin;

CREATE TABLE file_index
(
  id serial NOT NULL,
  filename character varying(256) NOT NULL,
  filetype character varying(16) NOT NULL,
  vendorid integer NOT NULL,
  vendorname character varying(256) NOT NULL,
  tablename character varying(256) NOT NULL,
  CONSTRAINT file_index_pkey PRIMARY KEY (id)
)
WITH (
  OIDS=FALSE
);
ALTER TABLE file_index
  OWNER TO rdsadmin;

基本上，auth_files / UserFile将Auth / User表与文件信息相关联，因此两个方向都很多。

我在SQL或模型中做错了吗？

Answer 1

基本上userid_id有一个很多用户的域，因此您将创建另一个名为api_UserFile_userid_id的表，当您在管理列表视图中显示时，您将必须传递用户模型的整个查询集以选择用户ID，因此您可以相应地查询在PK或用户名等取决于约束

因此将UserFile模型类定义为：

class UserFile(models.Model):
    userid_id = models.ManyToManyField(User)
    fileid_id = models.ManyToManyField(FileIndex)
    grant_date = models.DateTimeField()
    revoke_date = models.DateTimeField(blank=True)
    class Meta:
        db_table = 'auth_files'
        verbose_name = 'User File Matrix'
        verbose_name_plural = 'User File Matricies'

    def get_userids(self):
        return "\n".join([u.pk for u in self.user.all()])

    def get_fileids(self):
        return "\n".join([f.pk for f in self.fileindex.all()])

在admin.py中更改：

class UserFileAdmin(admin.ModelAdmin):
    # ...
    list_display = ('userid', 'fileid', 'grant_date', 'revoke_date')
    list_filter = ['userid']

要

class UserFileAdmin(admin.ModelAdmin):
    # ...
    list_display = ('get_userids', 'get_fileids', 'grant_date', 'revoke_date')
    list_filter = ['userid_id']

django auth manytomanyfield

1 个答案: