Django static and media folders

courses-slash-detail.html

<h1>{{ course.name }}</h1>

<p><strong>Description:</strong> {{ course.description }}</p>

<p><strong>Student Type:</strong> {{ course.get_student_type_display }}</p>

<p><strong>Image</strong> /{{ course.featured_image.url }}<br>
<img src="/{{ course.featured_image.url }}"></p>

<p><strong>Instructor:</strong> {{ course.instructor }}</p>

<p><strong>Number of sessions:</strong> {{ course.number_of_sessions }}</p>

<p><strong>Tuition (members):</strong> ${{ course.tuition_members }}</p>

<p><strong>Tuition (nonmembers):</strong> ${{ course.tuition_nonmembers }}</p>

<p><strong>Registration URL:</strong> <a href="{{ course.registration_url }}">{{ course.registration_url }}</p>

courses-slash-models.py

from __future__ import unicode_literals
from django.db import models
import datetime

DEFAULT_COURSE_AUDIENCE = ((1, 'Adult'), (2, 'Youth'), (3, 'Both'))
DEFAULT_COURSE_ID = 1
DEFAULT_COURSE_IMAGE = 'none'
DEFAULT_COURSE_IMAGE_HELP_TEXT = 'Image should be no larger than X px wide by Y px tall.'
DEFAULT_COURSE_IMAGE_UPLOAD_TO = '' # Relative to site's main folder.
DEFAULT_COURSE_SESSIONS = 4
DEFAULT_COURSE_TIX_URL = 'https://tickets.example.com/'
DEFAULT_COURSE_TUITION = 0
DEFAULT_INSTRUCTOR_ID = 1

def course_image_file_name(instance, filename):
	# This method should return a datestamped, sanitized filename.
	upload_date = datetime.datetime.utcnow().strftime("%Y%m%d-%H%M%S")
	return DEFAULT_COURSE_IMAGE_UPLOAD_TO + upload_date + "-" + filename

class Instructor(models.Model):
	name = models.CharField(max_length=200, verbose_name='Name (Last, First)')
	bio = models.TextField(max_length=1000)
	visible_on_site = models.BooleanField(default=True)
	def __str__(self):
		return self.name
	class Meta:
		ordering = ['name']

class Course(models.Model):
	name = models.CharField(max_length=200)
	description = models.TextField(max_length=1000)
	featured_image = models.ImageField(upload_to=course_image_file_name, max_length=100, default=DEFAULT_COURSE_IMAGE, help_text=DEFAULT_COURSE_IMAGE_HELP_TEXT)
	student_type = models.IntegerField(choices=DEFAULT_COURSE_AUDIENCE, default=1)
	instructor = models.ForeignKey(Instructor, on_delete=models.CASCADE, default=DEFAULT_INSTRUCTOR_ID)
	number_of_sessions = models.PositiveIntegerField(default=DEFAULT_COURSE_SESSIONS)
	tuition_members = models.PositiveSmallIntegerField(verbose_name='Tuition (members)', default=DEFAULT_COURSE_TUITION)
	tuition_nonmembers = models.PositiveSmallIntegerField(verbose_name='Tuition (nonmembers)', default=DEFAULT_COURSE_TUITION)
	registration_url = models.URLField(max_length=200, verbose_name='Registration URL', default=DEFAULT_COURSE_TIX_URL)
	visible_on_site = models.BooleanField(default=False)
	def __str__(self):
		return self.name
	class Meta:
		ordering = ['name']

courses-slash-urls.py

from django.conf.urls import url
from . import views

urlpatterns = [
    url(r'^$', views.index, name='index'),
    url(r'^adults/$', views.adult_courses, name='adults'),
    url(r'^youths/$', views.youth_courses, name='youths'),
    url(r'^instructors/$', views.list_instructors, name='instructors'),
    url(r'^(?P<course_id>[0-9]+)/$', views.detail, name='detail'),
]

settings.py

# Other stuff above...

# Static files (CSS, JavaScript, Images)
STATIC_ROOT = os.path.join(BASE_DIR, 'static/')
STATIC_URL = 'static/'

# Media files (Stuff uploaded by users)
MEDIA_ROOT = os.path.join(BASE_DIR, 'media/')
MEDIA_URL = 'media/'

urls.py

from django.conf import settings
from django.conf.urls import url, include
from django.conf.urls.static import static
from django.contrib import admin

urlpatterns = [
    url(r'^courses/', include('courses.urls')),
    url(r'^admin/', admin.site.urls),
] 

if settings.DEBUG is True:
    urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)