CODEWITHSUNDEEP
djangodjango-models
Splanger
Splanger

Reputation: 189

An error occurs while adding a custom method to model (from Django tutorial)

I'm new to Python and especially to Django. While trying to dive in subj. framework, and run through its official tutorial I got some pain in the neck error which says:

Attribute error: 'Poll' object has no attribute 'was_published_recently'

I type the next in django shell (invoked by: "python manage.py shell" from projects directory):

>>> from polls.models import Poll, Choice
>>> from django.utils import timezone
>>> p = Poll.objects.get(pk=1)
>>> p.was_published_recently()

and I get the next shell output:

Traceback (most recent call last):
File "", line 1, in
AttributeError: 'Poll' object has no attribute 'was_published_recently'"

Can someone help me to get what am I doing wrong here? Because I just have no idea what can lead to such an error... (Already googled inside out the question, but didn't find an answer that could solve my situation).

I use:
Django version 1.5.1
Python version 2.7.5

Here're my "Poll" model code:

import datetime
from django.utils import timezone
from django.db import models

class Poll(models.Model):
    question = models.CharField(max_length=200)
    pub_date = models.DateTimeField('date published')

    def __unicode__(self):
        return self.question

    def was_published_recently(self):
        return self.pub_date >= timezone.now() - datetime.timedelta(days=1)


class Choice(models.Model):
    poll = models.ForeignKey(Poll)
    choice_text = models.CharField(max_length=200)
    votes = models.IntegerField(default=0)

    def __unicode__(self):
        return self.choice_text

Also, here's my "Admin" file:

from django.contrib import admin
from polls.models import Choice, Poll

class ChoiceInline(admin.TabularInline):
    model = Choice
    extra = 3

class PollAdmin(admin.ModelAdmin):
    fieldsets = [
        (None,               {'fields': ['question']}),
        ('Date information', {'fields': ['pub_date'], 'classes': ['collapse']}),
    ]
    inlines = [ChoiceInline]
    list_display = ('question', 'pub_date', 'was_published_recently')

admin.site.register(Choice)
admin.site.register(Poll, PollAdmin)

Upvotes: 2

Views: 1534

Answers (2)

rachel
rachel

Reputation: 9

I think that all it is saying is that you haven't included any was_published_recently function in the class. Thanks for including the admin.py & polls.py files, but I think it's in your models.py file that you need to ensure a couple things. It looks like you need to make sure that

from django.utils import timezone 

def was_published_recently(self):
    return self.pub_date >= timezone.now() - datetime.timedelta(days=1)

are included in your models.py file.

Upvotes: 0

Yusuf Ibrahim
Yusuf Ibrahim

Reputation: 1619

make sure you use 4 spaces as indentation instead Tab character, tab makes function does not recognize.

Upvotes: 2

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