FYI, you can check this documentation
<https://docs.djangoproject.com/en/3.0/topics/db/queries/#field-lookups-intro>
for
double underscore in Django.
--
Jack Lin
在 2019年12月20日 於 上午1:28:29, Simon Charette (charett...@gmail.com) 寫下:
You are missing an underscore here.
It should be published_date__lte and not published_date_lte.
Cheers,
Simon
Le jeudi 19 décembre 2019 11:40:05 UTC-5, MEGA NATHAN a écrit :
>
> Hi all.
>
> Cannot resolve keyword 'published_date_lte' into field. Choices are: author,
> author_id, comments, create_date, id, published_date, text, title
>
>
>
> this are models:
> from django.db import models
> from django.utils import timezone
> from django.urls import reverse
>
> # Create your models here.
>
> class Post(models.Model):
> author = models.ForeignKey('auth.User', on_delete=models.CASCADE,)
> title = models.CharField(max_length=200)
> text = models.TextField()
> create_date = models.DateTimeField(default=timezone.now())
> published_date = models.DateTimeField(blank=True, null=True)
>
> def publish(self):
> self.published_date = timezone.now()
> self.save()
>
> #def approve_comments(self):
> #return self.comments.filter(approved_comments=True)
>
> def approved_comments(self):
> return self.comments.filter(approved_comment=True)
>
> #def get_absolute_url(self):
> #return reverse("post_detail", kwargs={"pk": self.pk})
>
> def __str__self():
> return self.title
>
> class Comment(models.Model):
> post = models.ForeignKey('blog.post',related_name='comments'
> , on_delete=models.CASCADE,)
> title = models.CharField(max_length=200)
> text = models.TextField()
> create_date = models.DateTimeField(default=timezone.now())
> published_date = models.DateTimeField(blank=True, null=True)
> approved_comment = models.BooleanField(default=False)
>
> def approve(self):
> self.approved_comment = True
> self.save()
>
> def get_absolute_url(self):
> return reverse('post_list')
>
> def __str__(self):
> return self.text
>
> And views:
>
> from django.shortcuts import render, get_object_or_404, redirect
> from django.utils import timezone
> #from django.utils.timezone.now`
> from blog.models import Post, Comment
> from .forms import PostForm,CommentForm
> from django.urls import reverse_lazy
> from django.contrib.auth.decorators import login_required
> from django.contrib.auth.mixins import LoginRequiredMixin
> from django.views.generic import (TemplateView, ListView,
> DetailView, CreateView,
> UpdateView, DeleteView)
>
> # Create your views here.
>
> class Aboutview(TemplateView):
> template_name = 'about.html'
>
> class PostListView(ListView):
> model = Post
>
> def get_queryset(self):
> return Post.objects.filter(published_date_lte=
> timezone.now()).order_by('-published_date')
>
> class PostDetailView(DetailView):
> model = Post
>
> class CreatePostView(LoginRequiredMixin,CreateView):
> Login_url = '/Login/'
> redirect_field_name = 'blog/post_detail.html'
> from_class = PostForm
> model = Post
>
> class PostUpdateView(LoginRequiredMixin, UpdateView):
> Login_url = '/Login/'
> redirect_field_name = 'blog/post_detail.html'
> from_class = PostForm
> model = Post
>
> #class PostDeleteView(loginrequiredMixin, DeleteView):
> class PostDeleteView(LoginRequiredMixin,DeleteView):
> model = Post
> success_url = reverse_lazy('post_list')
>
> class DraftListView(LoginRequiredMixin, ListView):
> login_url = '/Login/'
> redirect_field_name = 'blog/post_list.html'
> model = Post
>
> def get__queryset(self):
> return Post.objects.filter(published_date_isnull=True).order_by(
> 'created_date')
>
>
> #############################
> ##############################
> def add_comment_to_post(request, pk):
> post = get_object_or_404(Post, pk=pk)
> if request.method == "POST":
> form = CommentForm(request.POST)
> if form.is_valid():
> comment = form.save(commit=False)
> comment.post = post
> comment.save()
> return redirect('post_detail', pk=post.pk)
> else:
> form = CommentForm()
> return render(request, 'blog/comment_form.html', {'form': form})
>
> @login_required
> def post_publish(request, pk):
> post = get_object_or_404(Post, pk=pk)
> post.publish
> return redirect('blog/post_detail.html', pk=pk)
>
> #@login_required
> def comment_approve(request,pk):
> comment = get_object_or_404(comment,pk=pk)
> comment.approve()
> return redirect('post_detail',pk=comment.post.pk)
>
> #@login_required
> def comment_remove(request,pk):
> #comment = get_object_or_404(comment, pk=pk)
> #comment.remove()
> #return redirect('post_detail',pk=comment.post.pk)
> comment = get_object_or_404(comment, pk=pk)
> post_pk = comment.post.pk
> comment_delete()
> return redirect('post_detail',pk=comment.post.pk)
>
> *blog urls:*
>
> #from django.conf.urls import path
> from django.urls import include, path
>
> from blog import views
>
> urlpatterns = [
> path('',views.PostListView.as_view(), name='Post_list'),
> path('about', views.Aboutview.as_view, name='about'),
> path('Post/(?P<pk>\d+)', views.PostDetailView.as_view(), name=
> 'post_detail'),
> path('Post/new/', views.CreatePostView.as_view(), name='post_new'),
> path('Post/(?P<pk>\d+)/edit/', views.PostUpdateView.as_view(), name=
> 'post_edit'),
> path('Post/(?P<pk>\d+)/remove/', views.PostDeleteView.as_view(), name=
> 'post_remove'),
> path('drafts/', views.DraftListView.as_view(), name='post_draft_list'
> ),
> #path('Post/(?P<pk>\d+)/comment/',views.add_comment_
> to_post()error, name='add_comment_to_post'),
> path('Post/(?P<pk>\d+)/comment/',views.add_comment_to_post, name=
> 'add_comment_to_post'),
> path('comment/(?P<pk>\d+)/approve/',views.comment_approve,name=
> 'comment_approve'),
> path('comment/(?P<pk>\d+)/remove/',views.comment_remove,name=
> 'comment_remove'),
> path('Post/(?P<pk>\d+)/publish/',views.post_publish, name=
> 'post_publish'),
> ]
>
> site url:
>
> urlpatterns = [
> path('admin/', admin.site.urls),
> path('', include('blog.urls')),
> path('accounts/login/',auth_views.LoginView.as_view(template_name=
> 'blog/login.html')),
> path('accounts/logout/',views.logout, name='logout',kwargs={
> 'next_page': '/'}),
> ]
>
>
>
> How to reslove this field error:
>
>
>
>
>
> --
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