Re: 1.6 Tutorial: Alternative code position for Django admin list display settings

It should work as documented. I would not use the alternative of modifying the model in other files that you described.

On Thursday, November 21, 2013 6:22:29 AM UTC-5, Xiao Jia wrote:

I am following the tutorial of Django 1.6, which includes a model Poll that has a derived attributewas_published_recently (a method of class Poll). The model was originally defined as follows.

# polls/models.py (excerpted)    class Poll(models.Model):      # ...      def was_published_recently(self):          return self.pub_date >= timezone.now() - datetime.timedelta(days=1)

And the admin interface for this app:

# polls/admin.py (excerpted)    class PollAdmin(admin.ModelAdmin):      # ...      list_display = ('question', 'pub_date', 'was_published_recently')    admin.site.register(Poll, PollAdmin)

Now we want to improve the display and sorting functionality of was_published_recently.

In the tutorial, file polls/models.py is updated:

class Poll(models.Model):      # ...      was_published_recently.admin_order_field = 'pub_date'      was_published_recently.boolean = True      was_published_recently.short_description = 'Published recently?'

However, I think this may not be good enough in practice, because what we are specifying is completely about the admin user interface, not the model per se. So I instead updated polls/admin.py:

class PollAdmin(admin.ModelAdmin):      Poll.was_published_recently.admin_order_field = 'pub_date'      Poll.was_published_recently.boolean = True      Poll.was_published_recently.short_description = 'Published recently?'      # ...

After this modification, the app works as expected as well (multiple polls work well also). Since I am new to Python, I investigated a bit further by printing was_published_recently in both Poll andPollAdmin:

class Poll(models.Model):      # ...      print("in class Poll", was_published_recently)    class PollAdmin(admin.ModelAdmin):      print("in class PollAdmin", Poll.was_published_recently)      # ...

And the output is

in class Poll <function Poll.was_published_recently at 0x10fc92050>  in class PollAdmin <function Poll.was_published_recently at 0x10fc92050>

So apparently was_published_recently in class Poll is the same asPoll.published_recently accessed in class PollAdmin.

My question: Should I specify the admin_order_field stuffs in admin.py or models.py? If specified in admin.py instead of models.py, are there any drawbacks?

--
You received this message because you are subscribed to the Google Groups "Django users" group.
To unsubscribe from this group and stop receiving emails from it, send an email to django-users+unsubscribe@googlegroups.com.
To post to this group, send email to django-users@googlegroups.com.
Visit this group at http://groups.google.com/group/django-users.
To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/b5e0aef2-ce4d-43c7-b591-f919f06a6849%40googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.