Django: OperationalError No Such Table
I'm building a fairly simple application, research, in my Django project that uses Django-CMS. (It's my first ground-up attempt at a project/application.) Its main purpose is to store various intellectual assets (i.e article, book, etc. written by a researcher).
The problem is that when I point the browser to /research/ I get an error saying that the table 'research_journal' doesn't exist ("no such table").
I'm using Djnago 1.6.5 with a sqlite3 database.
Looking at python manage.py sql research yields:
BEGIN;
CREATE TABLE "research_researchbase" (
"id" integer NOT NULL PRIMARY KEY,
"pub_date" datetime NOT NULL,
"authors" varchar(200) NOT NULL,
"year" varchar(25) NOT NULL,
"title" varchar(200) NOT NULL,
"subtitle" varchar(200) NOT NULL,
"image_id" integer NOT NULL REFERENCES "filer_image" ("file_ptr_id"),
"link" varchar(200) NOT NULL
)
;
CREATE TABLE "research_journal" (
"researchbase_ptr_id" integer NOT NULL PRIMARY KEY REFERENCES "research_researchbase" ("id"),
"journal" varchar(200) NOT NULL,
"abstract" text NOT NULL,
"citation" varchar(200) NOT NULL
)
;
CREATE TABLE "research_encyclopedia_chapter" (
"researchbase_ptr_id" integer NOT NULL PRIMARY KEY REFERENCES "research_researchbase" ("id"),
"encyclopedia" varchar(200) NOT NULL,
"publisher" varchar(200) NOT NULL,
"summary" varchar(200) NOT NULL
)
;
CREATE TABLE "research_book" (
"researchbase_ptr_id" integer NOT NULL PRIMARY KEY REFERENCES "research_researchbase" ("id"),
"publisher" varchar(200) NOT NULL,
"summary" varchar(200) NOT NULL
)
;
COMMIT;
I've run python manage.py migrate research and get:
/Users/XXX/Documents/repos/sfs/env/lib/python2.7/site-packages/app_data/fields.py:2: DeprecationWarning: django.utils.simplejson is deprecated; use json instead.
from django.utils import simplejson as json
Running migrations for research:
- Nothing to migrate.
- Loading initial data for research.
Installed 0 object(s) from 0 fixture(s)
I've run python manage.py syncdb and get the following:
Syncing...
Creating tables ...
Installing custom SQL ...
Installing indexes ...
Installed 0 object(s) from 0 fixture(s)
Synced:
> djangocms_admin_style
> django.contrib.auth
> django.contrib.contenttypes
> django.contrib.sessions
> django.contrib.admin
> django.contrib.sites
> django.contrib.sitemaps
> django.contrib.staticfiles
> django.contrib.messages
> mptt
> south
> sekizai
> django_select2
> hvad
Not synced (use migrations):
- djangocms_text_ckeditor
- cms
- menus
- djangocms_style
- djangocms_column
- djangocms_file
- djangocms_flash
- djangocms_googlemap
- djangocms_inherit
- djangocms_link
- djangocms_picture
- djangocms_teaser
- djangocms_video
- reversion
- polls
- djangocms_polls
- aldryn_blog
- easy_thumbnails
- filer
- taggit
- research
(use ./manage.py migrate to migrate these)
Here's the models.py:
from django.db import models
from django.utils import timezone
from filer.fields.image import FilerImageField
import datetime
class ResearchBase(models.Model):
pub_date = models.DateTimeField('date published')
authors = models.CharField(max_length=200)
year = models.CharField(max_length=25)
title = models.CharField(max_length=200)
subtitle = models.CharField(max_length=200, blank=True)
image = FilerImageField()
link = models.CharField(max_length=200, blank=True)
def __unicode__(self):
return self.title
def was_published_recently(self):
return self.pub_date >= timezone.now() - datetime.timedelta(days=1)
class Journal(ResearchBase):
journal = models.CharField(max_length=200)
abstract = models.TextField()
citation = models.CharField(max_length=200)
class Encyclopedia_Chapter(ResearchBase):
encyclopedia = models.CharField(max_length=200)
publisher = models.CharField(max_length=200)
summary = models.CharField(max_length=200)
class Book(ResearchBase):
publisher = models.CharField(max_length=200)
summary = models.CharField(max_length=200)
Here's my views.py (note that I am passing two objects through render, ignore the fact that I have yet to include the class Books in the whole deal):
from django.shortcuts import render, get_object_or_404
from django.http import HttpResponse, Http404
from django.template import RequestContext, loader
from research.models import Journal, Encyclopedia_Chapter, Book
def research_index(request):
latest_journal_list = Journal.objects.order_by('-pub_date')[:5]
latest_chapter_list = Encyclopedia_Chapter.objects.order_by('-pub_date')[:5]
context = {
'latest_journal_list': latest_journal_list,
'latest_chapter_list': latest_chapter_list
}
return render(request, 'research/index.html', context)
def journal_detail(request, journal_id):
journal = get_object_or_404(Journal, pk=journal_id)
return render(request, 'research/journal_detail.html', {'journal': journal})
def chapter_detail(request, chapter_id):
chapter = get_object_or_404(Encyclopedia_Chapter, pk=chapter_id)
return render(request, 'research/chapter_detail.html', {'chapter': chapter})
Here's the application's url.py:
from django.conf.urls import patterns, url
from research import views
urlpatterns = patterns('',
url(r'^$', views.research_index, name='research'),
url(r'^(?P<journal_id>\d+)/$', views.journal_detail, name='journal_detail'),
url(r'^(?P<chapter_id>\d+)/$', views.chapter_detail, name='chapter_detail'),
)
Here's the index.html template:
{% extends 'research/base.html' %}
{% block research_content %}
<div class="container">
<div class="row featurette">
<h3 id="research">Peer-reviewed Journal Articles</h3>
{% if latest_journal_list %}
<ul id="research">
{% for journal in latest_journal_list %}
<li id="research">
<img src="{{ journal.image.url }}" id="research">
<h4>{{ journal.journal }}</h4>
<h5>{{ journal.title }}</h5>
<a href="{% url 'research:journal_detail' journal.id %}">Read More</a>
</li>
{% endfor %}
</ul>
{% else %}
<p>No journals are available.</p>
{% endif %}
</div>
<div class="row featurette">
<h3 id="research">Encyclopedia Chapters</h3>
{% if latest_chapter_list %}
<ul id="research">
{% for chapter in latest_chapter_list %}
<li id="research">
<img src="{{ chapter.image.url }}" id="research">
<h4>{{ chapter.journal }}</h4>
<h5>{{ chapter.title }}</h5>
<a href="{% url 'research:chapter_detail' chapter.id %}">Read More</a>
</li>
{% endfor %}
</ul>
{% else %}
<p>No encyclopedia chapters are available.</p>
{% endif %}
</div>
</div>
{% endblock %}
Just in case it matters, here's my cms_app.py:
from cms.app_base import CMSApp
from cms.apphook_pool import apphook_pool
from django.utils.translation import ugettext_lazy as _
class ResearchApp(CMSApp):
name = _("Research App")
urls = ["research.urls"]
app_name = "research"
apphook_pool.register(ResearchApp)
Use:
python manage.py migrate --run-syncdb
As stated in this comment by Benyamin Jafari:
--run-syncdb- Creates tables for apps without migrations.
Also don't forget to specity app path. For example:
python manage.py makemigrations app
python manage.py migrate app
For django 1.10 you may have to do python manage.py makemigrations appname.
If anyone finds that any of the suggested:
python manage.py makemigrations
python manage.py migrate
python manage.py migrate --run-syncdb
fail, you may need to add a folder named "migrations" inside the app directory, and create an empty __init__.py file.
It looks like there was an issue with my migration.
I ran ./manage.py schemamigration research --auto and found that many of the fields didn't have a default specified.
So, I ran ./manage.py schemamigration research --init followed by ./manage.py migrate research
Rerunning the server from there did the trick!