Databases
StackOverflow2013
Postsdbo
POPython/Django TangoWithDjango Models and Databases
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POPython/Django TangoWithDjango Models and Databases
    primarykey
    data
    text
    <p>I'm currently following <a href="http://www.tangowithdjango.com" rel="nofollow">http://www.tangowithdjango.com</a> and I'm trying to populate an existing DB with <code>populate_rango.py</code>. When I create the new categories, I'm trying to get the views and likes to be populated with the following:</p> <pre><code>Python: 128, 64 Django: 64, 32 Other Frameworks: 32, 16 </code></pre> <p>In my admin panel, it keeps showing 0's for both views and likes for all three categories. </p> <p>Can someone show me what I'm doing incorrectly with the code below?</p> <h3>models.py</h3> <pre><code>from django.db import models class Category(models.Model): name = models.CharField(max_length=128, unique=True) views = models.IntegerField(default=0) likes = models.IntegerField(default=0) 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) def __unicode__(self): return self.title </code></pre> <h3>populate_rango.py</h3> <pre><code>import os import sys def populate(): python_cat = add_cat('Python', 128, 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", 64, 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", 32, 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] return p def add_cat(name, views, likes): 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() </code></pre> <h3>settings.py</h3> <pre><code>""" Django settings for tango_with_django_project project. For more information on this file, see https://docs.djangoproject.com/en/dev/topics/settings/ For the full list of settings and their values, see https://docs.djangoproject.com/en/dev/ref/settings/ """ # Build paths inside the project like this: os.path.join(BASE_DIR, ...) import os BASE_DIR = os.path.dirname(os.path.dirname(__file__)) PROJECT_PATH = os.getcwd() # Quick-start development settings - unsuitable for production # See https://docs.djangoproject.com/en/dev/howto/deployment/checklist/ # SECURITY WARNING: keep the secret key used in production secret! SECRET_KEY = '@&amp;v@6mq6b-4(97c8s^4g((t-&amp;%k&amp;@hi08u$x0w+(mnhre08m!=' # SECURITY WARNING: don't run with debug turned on in production! DEBUG = True TEMPLATE_DEBUG = True ALLOWED_HOSTS = [] # Application definition INSTALLED_APPS = ( 'django.contrib.admin', 'django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.messages', 'django.contrib.staticfiles', 'rango', ) MIDDLEWARE_CLASSES = ( 'django.contrib.sessions.middleware.SessionMiddleware', 'django.middleware.common.CommonMiddleware', 'django.middleware.csrf.CsrfViewMiddleware', 'django.contrib.auth.middleware.AuthenticationMiddleware', 'django.contrib.messages.middleware.MessageMiddleware', 'django.middleware.clickjacking.XFrameOptionsMiddleware', ) ROOT_URLCONF = 'tango_with_django_project.urls' WSGI_APPLICATION = 'tango_with_django_project.wsgi.application' # Database # https://docs.djangoproject.com/en/dev/ref/settings/#databases DATABASES = { 'default': { 'ENGINE': 'django.db.backends.sqlite3', 'NAME': os.path.join(BASE_DIR, 'db.sqlite3'), } } # Internationalization # https://docs.djangoproject.com/en/dev/topics/i18n/ LANGUAGE_CODE = 'en-us' TIME_ZONE = 'UTC' USE_I18N = True USE_L10N = True USE_TZ = True # Static files (CSS, JavaScript, Images) # https://docs.djangoproject.com/en/dev/howto/static-files/ STATIC_PATH = os.path.join(PROJECT_PATH,'static') STATIC_URL = '/static/' # You may find this is already defined as such. STATICFILES_DIRS = ( STATIC_PATH, ) TEMPLATE_PATH = os.path.join(PROJECT_PATH, 'templates') TEMPLATE_DIRS = ( # Put strings here, like "/home/html/django_templates" or "C:/www/django/templates". # Always use forward slashes, even on Windows. # Don't forget to use absolute paths, not relative paths. TEMPLATE_PATH, ) MEDIA_URL = '/media/' MEDIA_ROOT = os.path.join(PROJECT_PATH, 'media') </code></pre>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USttran4040
    1. USttran4040
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. COCould you show us your settings file?
      singulars
      1. POPython/Django TangoWithDjango Models and Databases
      1. USNaster
    2. COYeah, I've just posted it above. As I mentioned, creating the db isn't messing up. It just doesn't create the new categories with the updated views/likes
      singulars
      1. POPython/Django TangoWithDjango Models and Databases
      1. USttran4040
    3. COMay add save after function get_or_create. p.save()
      singulars
      1. POPython/Django TangoWithDjango Models and Databases
      1. USNaster
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload