populate_rango.py

import os
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'tango_with_django_project.settings')

import django
django.setup()
from rango.models import Category, Page

def populate():
    python_pages = [
        {"title": "Official Python Tutorial",
        "url": "http://docs.python.org/2/tutorial/", "views": 34},
        {"title": "How to Think like a Computer Scientist",
        "url": "http://www.greenteapress.com/thinkpython", "views": 10},
        {"title": "Learn Python in 10 Minutes",
        "url": "http://korokithakis.net/tutorials/python/", "views": 15}
    ]
    django_pages = [
        {"title": "Official Django Tutorial",
        "url":"https://docs.djangoproject.com/en/1.9/intro/tutorial01/",
        "views": 13},
        {"title":"Django Rocks", "url":"http://www.djangorocks.com/",
        "views": 12},
        {"title":"How to Tango with Django",
        "url":"http://www.tangowithdjango.com/", "views": 11}
    ]
    other_pages = [
        {"title":"Bottle", "url":"http://bottlepy.org/docs/dev/", "views": 9},
        {"title":"Flask", "url":"http://flask.pocoo.org", "views": 10}
    ]
    # Dictionary of dictionaries holding each category,
    # mapped to its dict of pages
    cats = {"Python": {"pages": python_pages, "views": 128, "likes": 64},
            "Django": {"pages": django_pages, "views": 64, "likes": 32},
            "Other Frameworks": {"pages": other_pages, "views": 32, "likes": 16} }

    # Iterate through categories & add them to database
    for cat, cat_data in cats.items():
        c = add_cat(cat, cat_data["views"], cat_data["likes"])
        for p in cat_data["pages"]:
            add_page(c, p["title"], p["url"])

    # Print out categories we've added
    for c in Category.objects.all():
        for p in Page.objects.filter(category=c):
            print("- {0} - {1}".format(str(c), str(p)))

# Add a page (by category, title, url, initializing views to 0)
def add_page(cat, title, url, views=0):
    # get_or_create returns a tuple (object, created)
    # -- we just want object, so we index to [0]
    p = Page.objects.get_or_create(category=cat, title=title)[0]
    p.url=url
    p.views=views
    p.save()
    return p

# Add a category (by name)
def add_cat(name, views, likes):
    c = Category.objects.get_or_create(name=name)[0]
    c.views=views
    c.likes=likes
    c.save()
    return c

# Start execution
if __name__ == '__main__':
    print("Starting Rango population script...")
    populate()