django模糊匹配和大小写

from django.db.models import Q
if(request.GET.has_key('search')):
    search = request.GET.get('search')
    logger.info(search)
    jobs_set = models.Deploy.objects.filter(Q(deployName__contains=search) | Q(submit__icontains=search)).order_by(order_by)[offset:offset+limit]
    total = models.Deploy.objects.filter(Q(deployName__contains=search) | Q(submit__contains=search)).count()
else:
    logger.info("NOSEARCH")
    jobs_set = models.Deploy.objects.all().order_by(order_by)[offset:offset+limit]
    total = models.Deploy.objects.count()