How to use the robotframework.models.Webcase_keywords.objects function in robotframework

def display_web_casesteps(request):
    username = request.session.get('user', '')
    webcaseid = request.GET.get('webcase.id',None)
    webcase = Webcase.objects.get(id=webcaseid)
    keywords = Webcase_keywords.objects.all()
    webcasesteps = Webcasestep.objects.all()
    return render(request,"webcasestep_manage.html",{"user": username,"webcasesteps":webcasesteps,"webcase":webcase,"keywords":keywords})

def add_keywords(request):
    username = request.session.get('user', '')
    keywords = Webcase_keywords.objects.all()
    if request.method == "POST":
        library = request.POST.get("library", )
        keyword = request.POST.get("keyword", )
        parames = request.POST.get("parames", )
        comment = request.POST.get("comment", )
        Webcase_keywords.objects.get_or_create(library=library, keyword=keyword,parameter=parames,comment=comment)
    return render(request,"keywordslibrary.html",{"user": username, "keywords": keywords})