We're using two generic views here: object_list() and object_detail(). Respectively, those two views abstract the concepts of "display a list of objects" and "display a detail page for a particular type of object."
- Each generic view needs to know what data it will be acting upon. This data is provided in a dictionary. The queryset key in this dictionary points to the list of objects to be manipulated by the generic view.
- The object_detail() generic view expects the ID value captured from the URL to be called "object_id", so we've changed poll_id to object_id for the generic views.
- We've added a name, poll_results, to the results view so that we have a way to refer to its URL later on (see the documentation about naming URL patterns for information). We're also using the url() function fromdjango.conf.urls.defaults here. It's a good habit to use url() when you are providing a pattern name like this.
By default, the object_detail() generic view uses a template called <app name>/<model name>_detail.html. In our case, it'll use the template "polls/poll_detail.html". Thus, rename your polls/detail.html template to polls/poll_detail.html, and change the render_to_response() line in vote().
Similarly, the object_list() generic view uses a template called <app name>/<model name>_list.html. Thus, renamepolls/index.html to polls/poll_list.html.
Because we have more than one entry in the URLconf that uses object_detail() for the polls app, we manually specify a template name for the results view: template_name='polls/results.html'. Otherwise, both views would use the same template. Note that we use dict() to return an altered dictionary in place.
On Saturday, July 27, 2013 8:20:26 AM UTC+8, Cate Liu wrote:
I am a new newbie to Django. Great tutorial BTW. I followed it to the T and 99.9% worked.
Except the last step in the Advanced tutorial, the step 3 in 'Using your own package'.
I could see http://127.0.0.1:8000/admin/ and create polls without any problem.
But http://127.0.0.1:8000/polls/ would give me the following error.
I see there are two problems.
1./Users/nnn/django_exercises/mysite/templates/polls/index. html is the wrong location, it should be $$/django_polls/polls/ templates/polls/index.html.
2. What ispolls/poll_list.html?Nowhere in the tutorial ever created this file, no?
Thanks for any advice.
------------------------------------------------------------ ------------------------------ ---------------- TemplateDoesNotExist at /polls/
polls/index.html, polls/poll_list.html
Request Method: GET Request URL: http://127.0.0.1:8000/polls/ Django Version: 1.5.1 Exception Type: TemplateDoesNotExist Exception Value: Exception Location: /Library/Python/2.7/site- packages/django/template/ loader.py in select_template, line 194 Python Executable: /usr/bin/python Python Version: 2.7.2 Python Path: mysite', '/Users/nnn/py_pkg/lib/python/ django_polls-0.1-py2.7.egg', '/Users/nnn/py_pkg/lib/python' , '/System/Library/Frameworks/ Python.framework/Versions/2.7/ lib/python27.zip', '/System/Library/Frameworks/ Python.framework/Versions/2.7/ lib/python2.7', '/System/Library/Frameworks/ Python.framework/Versions/2.7/ lib/python2.7/plat-darwin', '/System/Library/Frameworks/ Python.framework/Versions/2.7/ lib/python2.7/plat-mac', '/System/Library/Frameworks/ Python.framework/Versions/2.7/ lib/python2.7/plat-mac/lib- scriptpackages', '/System/Library/Frameworks/ Python.framework/Versions/2.7/ Extras/lib/python', '/System/Library/Frameworks/ Python.framework/Versions/2.7/ lib/python2.7/lib-tk', '/System/Library/Frameworks/ Python.framework/Versions/2.7/ lib/python2.7/lib-old', '/System/Library/Frameworks/ Python.framework/Versions/2.7/ lib/python2.7/lib-dynload', '/System/Library/Frameworks/ Python.framework/Versions/2.7/ Extras/lib/python/PyObjC', '/Library/Python/2.7/site- packages'] Server time: Fri, 26 Jul 2013 16:59:14 -0700 Template-loader postmortem
Django tried loading these templates, in this order:
- Using loader
django.template.loaders.:filesystem.Loader
/Users/nnn/django_exercises/(File does not exist)mysite/templates/polls/index. html, polls/poll_list.html - Using loader
django.template.loaders.app_:directories.Loader
/Library/Python/2.7/site-(File does not exist)packages/django/contrib/auth/ templates/polls/index.html, polls/poll_list.html /Library/Python/2.7/site-(File does not exist)packages/django/contrib/admin/ templates/polls/index.html, polls/poll_list.html
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