Django Import-Export：管理界面“TypeError at /”

Question

I am trying to figure out how to use Django Import-Export,

https://pypi.python.org/pypi/django-import-export

by reading the docs

https://django-import-export.readthedocs.org/en/latest/getting_started.html#admin-integration

Admin Integration:

The gap between the example code and its resulting photo that follows, seems to be vast for my elementary python knowledge.

I have managed to code the following:

geographical_system/ models.py :

from django.db import models
from django.utils.translation import ugettext_lazy as _

class Regional_Units(models.Model):
    regional_unit = models.CharField(
        max_length=64, verbose_name=_(u'Regional Units'))

    def __unicode__(self):
        return u'%s' % (self.regional_unit)

geographical_system/ resources.py :

from import_export import resources
from geographical_system.models import Regional_Units
from import_export.admin import ImportExportModelAdmin


class Regional_Units_Resource(resources.ModelResource):

    class Meta(object):
        model = Regional_Units


class Regional_Units_Resource_Admin(ImportExportModelAdmin):
    resouce_class = Regional_Units_Resource # Why originally commented out?
    #pass #Why pass?

geographical_system/ admin.py :

from django.contrib import admin
from geographical_system.models import Regional_Units
from geographical_system.resources import Regional_Units_Resource_Admin


admin.site.register(Regional_Units)
admin.site.register(Regional_Units_Resource_Admin)  # **Improvising here**, otherwise nothing would happen

Resulting Error

Of course, my improvisation admin.site.register(Regional_Units_Resource_Admin) resulted in the following message when visiting

http://127.0.0.1:8000/admin/geographical_system/regional_units/

TypeError at /admin/geographical_system/regional_units/

'RenameBaseModelAdminMethods' object is not iterable

Request Method:     GET
Request URL:    http://127.0.0.1:8000/admin/geographical_system/regional_units/
Django Version:     1.6
Exception Type:     TypeError
Exception Value:    

'RenameBaseModelAdminMethods' object is not iterable

Exception Location:     /home/flyer/.virtualenvs/rara/lib/python2.7/site-packages/django/contrib/admin/sites.py in register, line 71
Python Executable:  /home/flyer/.virtualenvs/rara/bin/python
Python Version:     2.7.5
Python Path:    

['/home/flyer/02/rara',
 '/home/flyer/.virtualenvs/rara/lib64/python27.zip',
 '/home/flyer/.virtualenvs/rara/lib64/python2.7',
 '/home/flyer/.virtualenvs/rara/lib64/python2.7/plat-linux2',
 '/home/flyer/.virtualenvs/rara/lib64/python2.7/lib-tk',
 '/home/flyer/.virtualenvs/rara/lib64/python2.7/lib-old',
 '/home/flyer/.virtualenvs/rara/lib64/python2.7/lib-dynload',
 '/usr/lib64/python2.7',
 '/usr/lib/python2.7',
 '/usr/lib64/python2.7/lib-tk',
 '/home/flyer/.virtualenvs/rara/lib/python2.7/site-packages']

Questions

• Why is this error appearing?
• How could I end - up into this beautiful admin interface where Import and Export options are enabled?

Answer 1

Although I'm not familiar with this particular app, what you should do is replace

admin.site.register(Regional_Units)
admin.site.register(Regional_Units_Resource_Admin)

with

admin.site.register(Regional_Units, Regional_Units_Resource_Admin)

and if everything else is ok it should work. The admin register() method expects the Model as first argument and (optionally) a ModelAdmin class (or subclass) as second argument.

Sidenote: since you're just starting with python/django try to comply with the conventions. This means do not use _ between words in class Names (ie RegionalUnits is a suitable name) and try to place ModelAdmin declarations right inside the admin.py module (ie RegionalUnitsResourceAdmin should be declared in admin.py rather than being imported).

Answer 2

you shoule replace

admin.site.register(Regional_Units_Resource_Admin)

with

admin.site.register(Regional_Units, Regional_Units_Resource_Admin)