How to make Django prepopulated_fields work with Chinese?

Question

The python package called unidecode which will work well for decoding Chinese characters is included in my project. But when I use it in my Django project, the prepopulated_fields didn't work with Chinese.

Version Information: django 1.86,Python 3.4

Models.py

# coding:utf-8

from django.template.defaultfilters import slugify
from django.db import models
from django.contrib import admin
from unidecode import unidecode

# 类别
class Category(models.Model):

    name = models.CharField(max_length=128, unique=True)
    likes = models.IntegerField(default=0)
    slug = models.SlugField(unique=True)

    class Meta:
        # 定义显示的名字
        verbose_name = '类别'
        verbose_name_plural = '类别'

    def save(self,*args,**kwargs):
        self.slug = slugify(unidecode(self.name))
        super(Category,self).save(*args,**kwargs)

    def __str__(self):
        return self.name

class CategoryAdmin(admin.ModelAdmin):
    prepopulated_fields = {'slug':(unidecode('name'),)}



# 文章类
class Article(models.Model):
    title = models.CharField(u'标题', max_length=256)
    content = models.TextField(u'内容')
    pub_date = models.DateTimeField(u'发表时间', auto_now_add=True, editable=True)
    update_time = models.DateTimeField(u'更新时间',auto_now=True, null=True)
    category = models.ForeignKey(Category)          #ForeignKey, 创建1对多关系的字段类型.

    class Meta:
        verbose_name = '文章'
        verbose_name_plural = '文章'

    def __str__(self):
        return self.title       #按照标题来显示每个实例，也就是一行数据

admin.py

# coding:utf-8
from django.contrib import admin
from .models import Article, Category ,CategoryAdmin


from django_summernote.admin import SummernoteModelAdmin
class SomeModelAdmin(SummernoteModelAdmin):
    pass


# 注册
admin.site.register(Article,SomeModelAdmin)
admin.site.register(Category,CategoryAdmin)

When I input some Chinese characters,I want to see the slug field be auto filled like this:

But the fact is that the slug field is not been auto filled by any characters like this in Django admin:

Answer 1

From the docs:

Set prepopulated_fields to a dictionary mapping field names to the fields it should prepopulate from:

class ArticleAdmin(admin.ModelAdmin):
    prepopulated_fields = {"slug": ("title",)}

When set, the given fields will use a bit of JavaScript to populate from the fields assigned.

Since you have no field that corresponds to whatever the output of unidecode('name') is, the javascript is probably falling over.

Change it to just:

prepopulated_fields = {'slug':('name',)}

and it should work.