FieldError at / Django models how to reslove this issue....

[MEGA NATHAN]

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:

        

                

[Simon Charette]

You are missing an underscore here.

It should be published_date__lte and not published_date_lte.

Cheers,

Simon

[Jack Lin]

FYI, you can check this documentation for double underscore in Django.

-- 
Jack Lin

在 2019年12月20日 於 上午1:28:29, Simon Charette (chare...@gmail.com) 寫下:

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