python - 错误 : no such column: rango_category. 浏览次数

Question

我正在学习 Tango with Django 教程，位于 exercises for the fifth section ，我绊倒了。我使用了有关此主题的另一个 StackOverflow 问题的解决方案，但我不断收到此错误:

Error: no such column: rango_category.views

这是我的代码:

populate_rango.py

    import os

    def populate():
         python_cat = add_cat('Python', views=128, likes=64)

         add_page(cat=python_cat,
         title="Official Python Tutorial",
         url="http://docs.python.org/2/tutorial/")
    add_page(cat=python_cat,
         title="How to Think like a Computer Scientist",
         url="http://www.greenteapress.com/thinkpython/")

    add_page(cat=python_cat,
         title="Learn Python in 10 Minutes",
         url="http://www.korokithakis.net/tutorials/python/")

    django_cat = add_cat("Django", views=64, likes=32)

    add_page(cat=django_cat,
         title="Official Django Tutorial",
         url="https://docs.djangoproject.com/en/1.5/intro/tutorial01/")

    add_page(cat=django_cat,
         title="Django Rocks",
         url="http://www.djangorocks.com/")

    add_page(cat=django_cat,
         title="How to Tango with Django",
         url="http://www.tangowithdjango.com/")

    frame_cat = add_cat("Other Frameworks", views=32, likes=16)

    add_page(cat=frame_cat,
         title="Bottle",
         url="http://bottlepy.org/docs/dev/")

    add_page(cat=frame_cat,
         title="Flask",
         url="http://flask.pocoo.org")

    # Print out what we have added to the user.
    for c in Category.objects.all():
            for p in Page.objects.filter(category=c):
                    print "- {0} - {1}".format(str(c), str(p))

    def add_page(cat, title, url, views=0):
        p = Page.objects.get_or_create(category=cat, title=title, url=url, views=views)[0]

    def add_cat(name, views=0, likes=0):
        c = Category.objects.get_or_create(name=name, views=views, likes=likes)[0]
        return c

    # Start execution here!

    if __name__ == '__main__':
        print "Starting Rango population script..."
      os.environ.setdefault('DJANGO_SETTINGS_MODULE','tango_with_django_project.settings')
        from rango.models import Category, Page
        populate()

模型.py

from django.db import models

class Category(models.Model):
    name = models.CharField(max_length=128, unique=True)
    views = models.IntegerField(default=0, unique=False)
    likes = models.IntegerField(default=0, unique=False)

    def __unicode__(self):
        return self.name

class Page(models.Model):
    category = models.ForeignKey(Category)
    title = models.CharField(max_length=128)
    url = models.URLField()
    views = models.IntegerField(default=0, unique=False)

    def __unicode__(self):
        return self.title

admin.py

from django.contrib import admin
from rango.models import Category, Page

class PageAdmin(admin.ModelAdmin):
    list_display = ('title', 'category', 'url')

class CatAdmin(admin.ModelAdmin):
    list_display = ('views', 'likes')

admin.site.register(Category, CatAdmin)
admin.site.register(Page, PageAdmin)

希望大家帮忙!

Answer 1

您似乎收到此错误，因为表或列实际上并未在您的数据库中创建。如果您已经运行了 django-admin.pysyncdb，您可能想查看创建的实际结构。

这里有一些您可能还想查看的文档。 syncdb south