Sto costruendo un'applicazione abbastanza semplice, la ricerca, nel mio progetto Django che utilizza Django-CMS. (È il mio primo tentativo a terra su un progetto/applicazione.) Lo scopo principale è archiviare vari beni intellettuali (cioè articolo, libro, ecc. Scritti da un ricercatore).Django: OperationalError No Such Table
Il problema è che quando indico il browser a/ricerca/viene visualizzato un errore che dice che la tabella 'research_journal' non esiste ("nessuna tabella di questo tipo").
Sto utilizzando Djnago 1.6.5 con un database sqlite3.
Guardando python manage.py sql research
rendimenti:
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;
Ho eseguito python manage.py migrate research
e ottengo:
/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)
Ho eseguito python manage.py syncdb
e ottenere il seguente:
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)
Qui sta la 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)
Ecco la mia views.py (nota che sto passando due oggetti attraverso il rendering, ignorare il fatto che devo ancora includere la classe Libri in tutto l'accordo):
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})
Qui URL dell'applicazione .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'),
)
Ecco il modello index.html:
{% 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 %}
Nel caso in cui sia importante, ecco il mio 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)
Pensieri? Qualsiasi aiuto sarebbe molto apprezzato.
Hai eseguito python manage.py syncdb? – jabez
Sì. Ho eseguito python manage.py syncdb (aggiunto il risultato al post). Ho avuto l'impressione, tuttavia, che l'utilizzo di south via migrate eliminasse la necessità di sincronizzare il database tramite il comando sopra menzionato. È sbagliato? – Brian
Hai provato a rilasciare nuovamente DB e syncDB? – ppolak