Django 创建评论查看 pass Subject pk

Question

我正在学习 Django，并且一直在努力使评论表单正常工作。基本上我正在构建的是一个食谱应用程序。这只是练习，但想法是有人发布食谱，其他人可以对其发表评论。我基本上可以正常工作，但我不知道如何在提交评论后让重定向返回到食谱详细信息视图。

如果我在 pk 中硬编码它可以工作，我只需要掌握那个 pk！

这是我的东西：

Portion of Recipes views.py:

from django.shortcuts import render
from django.contrib.auth.mixins import LoginRequiredMixin
from django.views.generic import TemplateView, ListView, DetailView, CreateView, UpdateView, DeleteView, View
from django.views.generic.detail import SingleObjectMixin
from django.core.urlresolvers import reverse_lazy

#from comments.models import Comment
from .models import Recipe
from comments.models import Comment

from .forms import RecipeCreateForm
from comments.forms import CommentFormTrial
from comments.views import CommentCreateView

class PersonalRecipeListView(LoginRequiredMixin,ListView):

    def get_queryset(self):
        return Recipe.objects.filter(owner=self.request.user)

class RecipeDetailView(View):
    def get(self, request, *args, **kwargs):
        view = RecipeContent.as_view()
        return view(request, *args, **kwargs)

    def post(self, request, *args, **kwargs):

        view = CommentCreateView.as_view()
        return view(request, *args, **kwargs)


class RecipeContent(DetailView):
    model = Recipe
    template_name = 'recipes/recipe_detail.html'
    context_object_name = 'recipe_data'   


    def get_context_data(self, *args, **kwargs):
        context = super(RecipeContent, self).get_context_data(*args, **kwargs)
        print('-------------------')
        print(self.kwargs.get('pk'))
        qs= Comment.objects.filter(recipe=self.kwargs.get('pk'))
        context['comments'] = qs

        comment_form = CommentFormTrial
        context['comment_form'] = comment_form

        return context

还有我的评论view.py：

from django.shortcuts import render, get_object_or_404
from .models import Comment
from django.http import HttpResponseForbidden
from django.views.generic import ListView, CreateView
from django.core.urlresolvers import reverse_lazy
from .forms import CommentFormTrial


# Create your views here.
class CommentListView(ListView):
    model = Comment
    context_object_name = 'comments'
    template_name='comments/testcomment.html'


class CommentCreateView(CreateView):
    model = Comment
    form_class = CommentFormTrial

    success_url = reverse_lazy('recipes:recipe-detail', kwargs = {'pk':10})

    def form_valid(self, form):
        form.instance.owner = self.request.user
        return super(CommentCreateView, self).form_valid(form)

你可以看到我在 success_url 中硬编码了 PK 的“10”。完成后它可以工作，但显然只会重定向到那个食谱。

目前我正在从评论模式的下拉菜单中选择我想评论的菜谱，这也不理想。

非常感谢任何帮助！

Answer 1

您的评论需要引用它们链接到的食谱。我假设您的 Comment 模型有 ForeignKey 到 Recipe?

因此您的 CommentCreateView 需要接收一个额外的属性，即 pk 到 Recipe。看起来您的 kwargs 已经拥有该密钥，该密钥已传递给您的 CommentCreateView。所以在你的 CommentView 中，你只需要覆盖：

def get_success_url(self):
    recipe = Recipe.objects.get(pk=self.kwargs.get('pk'))
    return recipe.get_absolute_url()

并且不要在 class 级别定义 success_url。

Django 创建评论查看 pass Subject pk

Django Create Comment View pass Subject pk

python

django

django-class-based-views