view gpp/core/views.py @ 552:9e42e6618168

For bitbucket issue #2, tweak the admin settings for the Post model to reduce slow queries. Define our own queryset() method so we can control the select_related(), and not have it cascade from post to topics to forums to categories. Removed 'topic' from list_display because MySQL still sucked with 2 inner joins. Now it seems to be tolerable with only one join to User.
author Brian Neal <bgneal@gmail.com>
date Wed, 25 Jan 2012 20:07:03 -0600 (2012-01-26)
parents be3fff614b93
children
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"""
Views for the core application. These are mainly shared, common views
used by multiple applications.
"""
from django.contrib.auth.models import User
from django.http import HttpResponse
from django.shortcuts import render_to_response
from django.template import RequestContext
from django.contrib.auth.decorators import login_required
from django.views.decorators.http import require_GET
import django.utils.simplejson as json


@login_required
@require_GET
def markdown_help(request):
    """
    This view provides the Markdown help cheat sheet. It is expected
    to be called via AJAX.
    """
    return render_to_response('core/markdown_help.html')


def ajax_users(request):
    """
    If the user is authenticated, return a JSON array of strings of usernames 
    whose names start with the 'q' GET parameter, limited by the 'limit' GET 
    parameter. Only active usernames are returned.
    If the user is not authenticated, return an empty array.
    """
    q = request.GET.get('q', None)
    if q is None or not request.user.is_authenticated():
        return HttpResponse(json.dumps([]), content_type='application/json')

    limit = int(request.GET.get('limit', 10))
    users = User.objects.filter(is_active=True, 
            username__istartswith=q).values_list('username', flat=True)[:limit]
    return HttpResponse(json.dumps(list(users)), content_type='application/json')