Looks like you skiped a huge part of the tutorial. you might to go back...
On Thursday, June 7, 2018 at 11:08:15 AM UTC-4, Avitab Ayan Sarmah wrote:
>
> In windows powershell:
>
> ERRORS:
> <class 'polls.admin.QuestionAdmin'>: (admin.E108) The value of
> 'list_display[0]' refers to 'question_text', which is not a callable, an
> attribute of 'QuestionAdmin', or an attribute or method on 'polls.Question'.
> <class 'polls.admin.QuestionAdmin'>: (admin.E108) The value of
> 'list_display[1]' refers to 'pub_date', which is not a callable, an
> attribute of 'QuestionAdmin', or an attribute or method on 'polls.Question'.
> <class 'polls.admin.QuestionAdmin'>: (admin.E116) The value of
> 'list_filter[0]' refers to 'pub_date', which does not refer to a Field.
>
> System check identified 3 issues (0 silenced).
>
> polls\models.py:
>
> import datetime
>
> from django.db import models
> from django.utils import timezone
>
>
> class Question(models.Model):
> #...
> def was_published_recently(self):
> now = timezone.now()
> return now - datetime.timedelta(days=1) <= self.pub_date <= now
> was_published_recently.admin_order_field = 'pub_date'
> was_published_recently.boolean = True
> was_published_recently.short_description = 'published recently?'
> class Choice(models.Model):
> #...
> def __str__(self):
> return self.choice_text
> question = models.ForeignKey(Question, on_delete=models.CASCADE)
> choice_text = models.CharField(max_length=200)
> votes = models.IntegerField(default=0)
>
>
> polls\admin.py:
>
>
> from django.contrib import admin
>
> from . models import Choice, Question
>
>
> class ChoiceInline(admin.TabularInline):
> model = Choice
> extra = 3
>
>
> class QuestionAdmin(admin.ModelAdmin):
> fieldsets = [
> (None, {'fields': ['question_text']}),
> ('Date information',{'fields': ['pub_date'], 'classes':
> ['collapse']}),
> ]
> inlines = [ChoiceInline]
> list_display = ('question_text', 'pub_date', 'was_published_recently')
> list_filter = ['pub_date']
>
> admin.site.register(Question, QuestionAdmin)
>
>
>
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