16. Blog app : views and urls with template
Here is the current project file structure:
First, we creates a templates directory.
We also need template file, hello.html under tempaltes directory:
<html>
<body>
Hi {{name}}, from templates/hello.html
</body>
</html>
Now, how do we tell Django where the templates are?
settings.py!
Add the following lines to settings.py:
TEMPLATE_DIRS = (
'/home/k/Django/DjangoVirtualenv/DjangoTestProject/templates',
)
We specified the absolute path to the templates. That's the way of telling Django the location of the templates.
from django.http import HttpResponse
from django.template.loader import get_template
from django.template import Context
# Create your views here.
def hello(request):
name = "Bogo"
html = "<html><body>Hi %s from views.py. </body></html>" %name
return HttpResponse(html)
def hello_template(request):
name = "Bogo"
tp = get_template("hello.html")
html = tp.render(Context({'name': name}))
return HttpResponse(html)
The django.template.loader has two functions to load templates from files. One of them is get_template(), and the syntax looks like this:
get_template(template_name[, dirs])
get_template() returns the compiled template (a Template object) for the template with the given name. If the template doesn't exist, it raises django.template.TemplateDoesNotExist.
Once we have a compiled Template object, we can render a context with it. The Context class lives at django.template.Context. We usually instantiate Context objects by passing in a fully-populated dictionary to Context().
Now, we have two ways of display:
- blog.views.hello: The simplest - html string without template
- blog.views.hello_template: Not the simplest - using template
from django.conf.urls import patterns, include, url
#from django.contrib import admin
#admin.autodiscover()
urlpatterns = patterns('',
# Examples:
# url(r'^$', 'DjangoTestProject.views.home', name='home'),
# url(r'^blog/', include('blog.urls')),
#url(r'^admin/', include(admin.site.urls)),
url(r'^hello/', 'blog.views.hello'),
url(r'^hello_template/', 'blog.views.hello_template'),
)
$ python manage.py runserver
We can see both of the displays are working!
Ph.D. / Golden Gate Ave, San Francisco / Seoul National Univ / Carnegie Mellon / UC Berkeley / DevOps / Deep Learning / Visualization
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