def delete_blog(request, blog_id):
init_session_if_needed(request)
if Blog.exists(blog_id):
blog = Blog.objects.get(id=blog_id)
blog.delete()
request.session['delete_counter'] += 1
return HttpResponseRedirect('/myblog')
else:
return render_to_response("no_blog.html",
{'id': blog_id},
context_instance=RequestContext(request))
def show_blog(request, blog_id):
init_session_if_needed(request)
if Blog.exists(blog_id):
request.session['visit_counter'] += 1
blog = Blog.objects.get(id=blog_id)
return render_to_response("blog.html",
{
'title': blog.title,
'content': blog.content
},
context_instance=RequestContext(request))
else:
return render_to_response("no_blog.html",
{'id': blog_id},
context_instance=RequestContext(request))
def edit_blog(request, blog_id):
init_session_if_needed(request)
if Blog.exists(blog_id):
blog = Blog.objects.get(id=blog_id)
if request.method == "POST" \
and request.POST.has_key('content') \
and request.session.has_key('edited_version'):
edited_version = int(request.session['edited_version'])
user_content = request.POST['content'].strip()
if edited_version == blog.version:
# The blog post has not been changed, it can be updated now.
blog.content = user_content
blog.version += 1
blog.save()
request.session['edit_counter'] += 1
return HttpResponseRedirect('/myblog')
else:
# The article was changed by someone else, ask user to
# resolve conflicts.
request.session['edited_version'] = blog.version
return render_to_response("resolve_conflicts.html",
{
'id': blog.id,
'title': blog.title,
'current_content': blog.content,
'user_content': user_content
},
context_instance=RequestContext(
request))
else:
request.session['edited_version'] = blog.version
return render_to_response("edit_blog.html",
{
'title': blog.title,
'id': blog.id,
'content': blog.content
},
context_instance=RequestContext(request))
else:
return render_to_response("no_blog.html",
{"id": blog_id},
context_instance=RequestContext(request))