Django，不允许发布方法 (405) 详细信息 View

Question

我是 Django 的新手，正在尝试构建一个 BLOG 应用程序。
最后一步是能够在详细博客文章中创建评论，
我试图将用于创建评论的表单放在同一个详细信息 View 中
作为 blog_post 和评论，
当我尝试创建带有表单错误的评论时，控制台中显示:
不允许发布方法，我尝试了所有方法但仍然无效
请帮忙，我非常感谢你的帮助
我的代码

View

from django.contrib.auth.decorators import login_required
from django.core.urlresolvers import reverse
from django.http import HttpResponse
from django.views.generic import View
from django.views.generic.base import TemplateView, TemplateResponseMixin, ContextMixin
from django.views.generic.detail import DetailView
from django.views.generic.list import ListView
from django.views.generic.edit import CreateView, UpdateView, DeleteView
from django.shortcuts import render
from django.utils.decorators import method_decorator

from django.contrib.contenttypes.models import ContentType



from .models import blog_post, Category
from .forms import blog_postForm


from comments.models import Comment
from comments.forms import CommentForm






class CategoryListView(ListView):
    model = Category
    queryset = Category.objects.all()
    template_name = "blog/category_list.html"



class CategoryDetailView(DetailView):
    model = Category

    def get_context_data(self, *args, **kwargs):
        context = super(CategoryDetailView, self).get_context_data(*args, **kwargs)
        obj = self.get_object()
        blogpost_set = obj.blog_post_set.all()
        default_blogpost = obj.default_category.all()
        blogposts = ( blogpost_set | default_blogpost ).distinct()
        context["blogposts"] = blogposts
        return context



class LoginRequiredMixin(object):
     @classmethod
     def as_view(cls, **kwargs):
       view = super(LoginRequiredMixin, cls).as_view(**kwargs)
       return login_required(view)

    #@method_decorator(login_required)
    #def dispatch(self, request, *args, **kwargs):
    #    return super(LoginRequiredMixin, self).dispatch(request, *args, **kwargs)



class blog_postCreateView(LoginRequiredMixin, CreateView):
    #model = blog_post
    form_class = blog_postForm
    template_name = "form.html"
    #fields = ["title", "content"]
    def get_success_url(self):
        return reverse("blog_post_list")

    # @method_decorator(login_required)
    # def dispatch(self, request, *args, **kwargs):
    #   return super(MyView, self).dispatch(request, *args, **kwargs)    


class blog_postListView(ListView):

    model = blog_post
    def get_queryset(self, *args, **kwargs):
        qs = super(blog_postListView, self).get_queryset(*args, **kwargs).order_by("-timestamp")
        return qs

class blog_postDetailView(DetailView):

    model = blog_post

    def get_context_data(self, *args, **kwargs):
        context = super(blog_postDetailView, self).get_context_data(*args, **kwargs)
        obj = self.get_object()
        #default_blogpost = obj.default_category.all()
        #blogposts = ( blogpost_set | default_blogpost ).distinct()
        # content_type = ContentType.objects.get_for_model(blog_post)
        # obj_id = obj.id
        # comments = Comment.objects.filter(content_type=content_type, object_id= obj_id)

        initial_data = {
            "content_type": obj.get_content_type,
            "object_id": obj.id
        }   

        form = CommentForm(self.request.POST or None, initial=initial_data)
        if form.is_valid():
            c_type = form.cleaned_data.get("content_type")
            content_type = ContentType.objects.get(model=c_type)
            obj_id = form.cleaned_data.get('object_id')
            content_data = form.cleaned_data.get("content")
            new_comment, created = Comment.objects.get_or_create(
                            user = request.user,
                            content_type= content_type,
                            object_id = obj_id,
                            content = content_data
                        )

        comments = obj.comments.order_by("-timestamp")
        context['comments'] = comments
        context['comment_form'] = form
        return context



class AboutPageView(TemplateView):

    template_name = "about.html"


class ContactPageView(TemplateView):

    template_name = "contact.html"   



class IndexView(ListView):
    context_object_name = 'home_list'    
    template_name = 'blog/index.html'
    queryset = blog_post.objects.all().order_by("-timestamp")

    def get_context_data(self, **kwargs):
        context = super(IndexView, self).get_context_data(**kwargs)
        context['categories'] = Category.objects.all()
        # And so on for more models
        return context

blog_post_detail.html

{% extends "base.html" %}

{% load crispy_forms_tags %}







{% block content %}


            <!-- Blog Post Content Column -->
            <div class="col-lg-8">

                <!-- Blog Post -->

                <!-- Title -->
                <h1>{{ object.title }}</h1>

                <!-- Author -->
                <p class="lead">
                    by <a href="#">Start Bootstrap</a>
                </p>

                <hr>

                <!-- Date/Time -->
                <p><span class="glyphicon glyphicon-time"></span> Posted on {{ object.timestamp|date }} </p>

                <hr>

                <!-- Preview Image -->
                <!-- <img class="img-responsive" src="http://placehold.it/900x300" alt=""> -->
                        {% if object.image %}
                    <img src='{{ object.image.url }}' class='img-responsive' />
                        {% endif %}
                <hr>

                <!-- Post Content -->
                <div class="content-markdown"><p class="lead">{{ object.content }}</p></div>

                <hr>

                <!-- Blog Comments -->





                <!-- Comments Form LEAVE A COMMENT -->
                <div class="well">
                    <h4>Leave a Comment:</h4>
 <!--                    <form role="form">
                        <div class="form-group">
                            <textarea class="form-control" rows="3"></textarea>
                        </div>
                        <button type="submit" class="btn btn-primary">Submit</button>
                    </form> -->
                        <form method="POST" action='.'> {% csrf_token %}
                            {{ comment_form }}
                        <input type='submit' value='Post comment' class='btn btn-default'>
                        </form>
                        <hr/>

                </div>

                <hr>

                <!-- Posted Comments -->
                <!-- Comment -->
                {% for comment in comments %}
                <div class="media">
                    <a class="pull-left" href="#">
<!--                         {% if object.image %}
                    <img src='{{ object.image.url }}' class='img-responsive' />
                        {% endif %} -->
                         <img class="media-object" src="http://placehold.it/64x64" alt=""> 
                    </a>
                    <div class="media-body">
                        <h4 class="media-heading">{{ comment.content_object }} 
                            <small> by {{ comment.user }} | {{ comment.timestamp|timesince }} ago </small>
                        </h4>
                        {{ comment.content }}
                        <!-- Nested Comment -->
<!--                         <div class="media">
                            <a class="pull-left" href="#">
                                <img class="media-object" src="http://placehold.it/64x64" alt="">
                            </a>
                            <div class="media-body">
                                <h4 class="media-heading">Nested Start Bootstrap
                                    <small>August 25, 2014 at 9:30 PM</small>
                                </h4>
                                Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin commodo. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.
                            </div>
                        </div> -->
                        <!-- End Nested Comment -->
                    </div>
                </div>
                {% endfor %}
            </div>


           <!-- Blog Sidebar Widgets Column -->
            <div class="col-md-4">

                <!-- Blog Search Well -->
                <div class="well">
                    <h4>Blog Search</h4>
                    <div class="input-group">
                        <input type="text" class="form-control">
                        <span class="input-group-btn">
                            <button class="btn btn-default" type="button">
                                <span class="glyphicon glyphicon-search"></span>
                        </button>
                        </span>
                    </div>
                    <!-- /.input-group -->
                </div>

                <!-- Blog Categories Well -->
                <div class="well">
                    <h4>Blog Categories</h4>
                    <div class="row">
                        <div class="col-lg-6">
                            <ul class="list-unstyled">
                                <li><a href="#">Category Name</a>
                                </li>
                                <li><a href="#">Category Name</a>
                                </li>
                                <li><a href="#">Category Name</a>
                                </li>
                                <li><a href="#">Category Name</a>
                                </li>
                            </ul>
                        </div>
                        <!-- /.col-lg-6 -->
                        <div class="col-lg-6">
                            <ul class="list-unstyled">
                                <li><a href="#">Category Name</a>
                                </li>
                                <li><a href="#">Category Name</a>
                                </li>
                                <li><a href="#">Category Name</a>
                                </li>
                                <li><a href="#">Category Name</a>
                                </li>
                            </ul>
                        </div>
                        <!-- /.col-lg-6 -->
                    </div>
                    <!-- /.row -->
                </div>

                <!-- Side Widget Well -->
                <div class="well">
                    <h4>Side Widget Well</h4>
                    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Inventore, perspiciatis adipisci accusamus laudantium odit aliquam repellat tempore quos aspernatur vero.</p>
                </div>

            </div>

        </div>
        <!-- /.row -->
            {% endblock content %}

博客模式

from __future__ import unicode_literals

from django.conf import settings
from django.core.urlresolvers import reverse
from django.db import models

from django.db.models.signals import pre_save, post_save
from django.utils.text import slugify
# Create your models here.

from comments.models import Comment
from django.contrib.contenttypes.models import ContentType


def upload_location(instance, filename):
    #filebase, extension = filename.split(".")
    #return "%s/%s.%s" %(instance.id, instance.id, extension)
    return "%s/%s" %(instance.id, filename)


class blog_post(models.Model):
    user = models.ForeignKey(settings.AUTH_USER_MODEL, default=1)
    title = models.CharField(max_length=120)
    height_field = models.IntegerField(default=0)
    width_field = models.IntegerField(default=0)
    image = models.ImageField(upload_to=upload_location, null=True, blank=True, width_field="width_field", height_field="height_field")
    slug = models.SlugField(unique=True)
    content = models.TextField()
    updated = models.DateTimeField(auto_now=True, auto_now_add=False)
    timestamp = models.DateTimeField(auto_now=False, auto_now_add=True)
    categories = models.ManyToManyField('Category', blank=True)
    default = models.ForeignKey('Category', related_name='default_category', null=True, blank=True)

    def __unicode__(self):
        return self.title

    def __str__(self):
        return self.title   

    def get_absolute_url(self):
        return reverse("blog_post_detail", kwargs={"slug": self.slug})

    @property
    def comments(self):
        instance = self
        qs = Comment.objects.filter_by_instance(instance)
        return qs

    @property
    def get_content_type(self):
        instance = self
        content_type = ContentType.objects.get_for_model(instance.__class__)
        return content_type





def create_slug(instance, new_slug=None):
    slug = slugify(instance.title)
    if new_slug is not None:
        slug = new_slug
    qs = blog_post.objects.filter(slug=slug).order_by("-id")
    exists = qs.exists()
    if exists:
        new_slug = "%s-%s" %(slug, qs.first().id)
        return create_slug(instance, new_slug=new_slug)
    return slug


def pre_save_post_receiver(sender, instance, *args, **kwargs):
    if not instance.slug:
        instance.slug = create_slug(instance)



pre_save.connect(pre_save_post_receiver, sender=blog_post)


class Category(models.Model):
    title = models.CharField(max_length=120, unique=True)
    slug = models.SlugField(unique=True)
    description = models.TextField(null=True, blank=True)
    active = models.BooleanField(default=True)
    timestamp = models.DateTimeField(auto_now_add=True, auto_now=False)

    def __unicode__(self):
        return self.title


    def get_absolute_url(self):
        return reverse("category_detail", kwargs={"slug": self.slug })

评论模型

from __future__ import unicode_literals

from django.conf import settings

from django.contrib.contenttypes.fields import GenericForeignKey
from django.contrib.contenttypes.models import ContentType

from django.db import models



#from blog.models import blog_post


class CommentManager(models.Manager):
    def filter_by_instance(self, instance):
        content_type = ContentType.objects.get_for_model(instance.__class__)
        obj_id = instance.id
        qs = super(CommentManager, self).filter(content_type=content_type, object_id= obj_id)
        return qs



class Comment(models.Model):
    user        = models.ForeignKey(settings.AUTH_USER_MODEL, default=1)
    #post        = models.ForeignKey(blog_post)

    content_type = models.ForeignKey(ContentType, on_delete=models.CASCADE)
    object_id = models.PositiveIntegerField()
    content_object = GenericForeignKey('content_type', 'object_id')

    content     = models.TextField()
    timestamp   = models.DateTimeField(auto_now_add=True)


    objects = CommentManager()


    def __unicode__(self):
        return str(self.user.username)

    def __str__(self):
        return str(self.user.username)

我非常感谢你的帮助

Answer 1

如果你想为你的 View 添加编辑功能，你需要使用 UpdateView而不是 DetailView
示例

class blog_postDetailView(UpdateView):
    form_class = CommentForm
    model = blog_post

    def get_initial(self):
        initial_data = super(blog_postDetailView, self).get_initial()
        obj = self.get_object()
        initial_data.update({
            "content_type": obj.get_content_type,
            "object_id": obj.id
        })
        return initial_data 

    def get_context_data(self, *args, **kwargs):
        context = super(blog_postDetailView, self).get_context_data(*args, **kwargs)
        obj = self.get_object()
        #default_blogpost = obj.default_category.all()
        #blogposts = ( blogpost_set | default_blogpost ).distinct()
        # content_type = ContentType.objects.get_for_model(blog_post)
        # obj_id = obj.id
        # comments = Comment.objects.filter(content_type=content_type, object_id= obj_id)
        comments = obj.comments.order_by("-timestamp")
        context['comments'] = comments
        # your form in template should be called form, doing this line for compatability
        context['comments_form'] = context['form']
        return context

    def form_valid(self, form):
        c_type = form.cleaned_data.get("content_type")
        content_type = ContentType.objects.get(model=c_type)
        obj_id = form.cleaned_data.get('object_id')
        content_data = form.cleaned_data.get("content")
        new_comment, created = Comment.objects.get_or_create(
                        user = request.user,
                        content_type= content_type,
                        object_id = obj_id,
                        content = content_data
                    )
        return super(blog_postDetailView, self).form_valid(form)