populate_rango.py

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


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

def populate():
    # First, we will create lists of dictionaries containing the pages
    # we want to add into each category.
    # Then we will create a dictionary of dictionaries for our categories.
    # This might seem a little bit confusing, but it allows us to iterate
    # through each data structure, and add the data to our models.
    
    python_pages = [
        {'title': 'Official Python Tutorial', 'url':'http://docs.python.org/3/tutorial/', 'views': 144},
        {'title':'How to Think like a Computer Scientist', 'url':'http://www.greenteapress.com/thinkpython/', 'views': 55},
        {'title':'Learn Python in 10 Minutes', 'url':'http://www.korokithakis.net/tutorials/python/', 'views': 20}
    ]

    django_pages = [
        {'title':'Official Django Tutorial',
        'url':'https://docs.djangoproject.com/en/2.1/intro/tutorial01/', 'views': 32},
        {'title':'Django Rocks',
        'url':'http://www.djangorocks.com/', 'views': 12},
        {'title':'How to Tango with Django',
        'url':'http://www.tangowithdjango.com/', 'views': 1258}
    ]

    other_pages = [
        {'title':'Bottle',
        'url':'http://bottlepy.org/docs/dev/', 'views': 54},
        {'title':'Flask',
        'url':'http://flask.pocoo.org', 'views': 65}
    ]

    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} 
    }

    # If you want to add more categories or pages,
    # add them to the dictionaries above.

    # The code below goes through the cats dictionary, then adds each category,
    # and then adds all the associated pages for that category.
    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'], p['views'])

    # Print out the categories we have added.
    for c in Category.objects.all():
        for p in Page.objects.filter(category=c):
            print(f'- {c}: {p}')

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

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

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