def post_comment(request, post_pk):
post = get_object_or_404(Post, pk=post_pk)
# check the method
if request.method == 'POST':
print('receive the post')
# construct the instance of comment form
form = CommentForm(request.POST)
# check if the data in the form is correct in format
if form.is_valid():
print('valid')
comment = form.save(
commit=False) # generate the comment from the comment form
comment.post = post # relate to the post
comment.save() # save to comment database
return redirect(post) # redirect to post.get_absolute_url
else:
# find invalid, return to error page
comment_list = post.comment_set.all()
context = {
'post': post,
'form': form,
'comment_list': comment_list
}
return render(request, 'iblog/detail.html', context=context)
else:
return redirect(post)
def post_detail(request, slug=None):
instance = get_object_or_404(Post, slug=slug)
if instance.draft:
if not request.user.is_staff or not request.user.is_superuser:
raise Http404
#content_type = ContentType.objects.get_for_model(Post)
#object_id = instance.id
#comments = Comment.objects.filter(content_type=content_type,object_id=object_id)
#comments = Comment.objects.filter_by_instance(instance)
#print(get_read_time(instance.get_markdown()))
initial_data = {
"content_type": instance.get_content_type,
"object_id": instance.id
}
comment_form = CommentForm(request.POST or None, initial=initial_data)
if comment_form.is_valid():
c_type = comment_form.cleaned_data.get("content_type")
content_type = ContentType.objects.get(model=c_type)
object_id = comment_form.cleaned_data.get('object_id')
content_data = comment_form.cleaned_data.get('content')
parent_obj = None
try:
parent_id = int(request.POST.get('parent_id'))
except:
parent_id = None
if parent_id is not None:
parent_qs = Comment.objects.filter(id=parent_id)
if parent_qs.exists() and parent_qs.count() == 1:
parent_obj = parent_qs.first()
new_comment, created = Comment.objects.get_or_create(
user=request.user,
content_type=content_type,
object_id=object_id,
content=content_data,
parent=parent_obj)
return HttpResponseRedirect(
new_comment.content_object.get_absolute_url())
comments = instance.comments
context = {
'qs': instance,
'comments': comments,
"comment_form": comment_form,
'url': '/posts/'
}
return render(request, 'post_detail.html', context)
def read(request, id=None):
item = get_object_or_404(Post, id=id)
if item.publish > timezone.now().date() or item.draf:
if not request.user.is_staff or not request.user.is_superuser:
raise Http404
share_string = quote_plus(item.content)
#print(get_read_time(item.get_markdown()))
## next two field used without modelManager
#content_type = ContentType.objects.get_for_model(Post)
#obj_id = item.id
initial_data = {
"content_type": item.get_content_type,
"object_id": item.id
}
form = CommentForm(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")
parent_obj = None
try:
parent_id = int(request.POST.get("parent_id"))
except:
parent_id = None
if parent_id:
parent_qs = Comment.objects.filter(id=parent_id)
if parent_qs.exists():
parent_obj = parent_qs.first()
new_comment, created = Comment.objects.get_or_create(
user=request.user,
content_type=content_type,
object_id=obj_id,
content=content_data,
parent=parent_obj,
)
return HttpResponseRedirect(
new_comment.content_object.get_absolute_url())
#comments = Comment.objects.filter_by_instance(item)
comments = item.comments
context = {
"item": item,
"share_string": share_string,
"comments": comments,
"comment_form": form,
}
return render(request, 'read.html', context)
def get_context_data(self, **kwargs):
context = super(PostDetailView, self).get_context_data(**kwargs)
form = CommentForm()
comment_list = self.object.comment_set.all()
context.update({'form': form, 'comment_list': comment_list})
return context
def get_context_data(self, **kwargs):
# 覆写 get_context_data 的目的是因为除了将 post 传递给模板外（DetailView 已经帮我们完成），
# 还要把评论表单、post 下的评论列表传递给模板。
context = super(PostDetailView, self).get_context_data(**kwargs)
form = CommentForm()
comment_list = self.object.comment_set.all()
context.update({'form': form, 'comment_list': comment_list})
return context
def comment(request, post_pk):
# 先获取被评论的文章，因为后面需要把评论和被评论的文章关联起来。
# 这里我们使用了 django 提供的一个快捷函数 get_object_or_404，
# 这个函数的作用是当获取的文章（Post）存在时，则获取；否则返回 404 页面给用户。
post = get_object_or_404(Post, pk=post_pk)
# django 将用户提交的数据封装在 request.POST 中，这是一个类字典对象。
# 我们利用这些数据构造了 CommentForm 的实例，这样就生成了一个绑定了用户提交数据的表单。
form = CommentForm(request.POST)
# 当调用 form.is_valid() 方法时，django 自动帮我们检查表单的数据是否符合格式要求。
if form.is_valid():
# 检查到数据是合法的，调用表单的 save 方法保存数据到数据库，
# commit=False 的作用是仅仅利用表单的数据生成 Comment 模型类的实例，但还不保存评论数据到数据库。
comment = form.save(commit=False)
# 将评论和被评论的文章关联起来。
comment.post = post
# 最终将评论数据保存进数据库，调用模型实例的 save 方法
comment.save()
# 这里导入 django 的 messages 模块，使用 add_message 方法增加了一条消息，
# 消息的第一个参数是当前请求，因为当前请求携带用户的 cookie，django 默认将详细存储在用户的 cookie 中。
# 第二个参数是消息级别，评论发表成功的消息设置为 messages.SUCCESS，这是 django 已经默认定义好的一个整数，消息级别也可以自己定义。
# 紧接着传入消息的内容，最后 extra_tags 给这条消息打上额外的标签，标签值可以在展示消息时使用，比如这里我们会把这个值用在模板中的 HTML 标签的 class 属性，增加样式。
messages.add_message(request,
messages.SUCCESS,
'评论发表成功！',
extra_tags='success')
# 重定向到 post 的详情页，实际上当 redirect 函数接收一个模型的实例时，它会调用这个模型实例的 get_absolute_url 方法，
# 然后重定向到 get_absolute_url 方法返回的 URL。
return redirect(post)
# 检查到数据不合法，我们渲染一个预览页面，用于展示表单的错误。
# 注意这里被评论的文章 post 也传给了模板，因为我们需要根据 post 来生成表单的提交地址。
context = {
'post': post,
'form': form,
}
messages.add_message(request,
messages.ERROR,
'评论发表失败！请修改表单中的错误后重新提交。',
extra_tags='danger')
return render(request, 'comments/preview.html', context=context)
def posts_detail(request, slug=None):
instance = get_object_or_404(Post, slug=slug)
# content_type = ContentType.objects.get_for_model(Post)
# object_id = instance.id
# comments = Comment.objects.filter(content_type=content_type, object_id=object_id)
initial_data = {
'content_type': instance.get_content_type,
'object_id': instance.id,
}
comment_form = CommentForm(request.POST or None, initial=initial_data)
if comment_form.is_valid():
c_type = comment_form.cleaned_data.get('content_type')
content_type = ContentType.objects.get(model=c_type)
object_id = comment_form.cleaned_data.get('object_id')
content_data = comment_form.cleaned_data.get('content')
parent_obj = None
try:
parent_id = int(request.POST.get('parent_id'))
except:
parent_id = None
if parent_id:
parent_qs = Comment.objects.filter(id=parent_id)
if parent_qs.exists() and parent_qs.count() == 1:
parent_obj = parent_qs.first()
new_comment, created = Comment.objects.get_or_create(
user=request.user,
content_type=content_type,
object_id=object_id,
content=content_data,
parent=parent_obj)
return HttpResponseRedirect(
new_comment.content_object.get_absolute_url())
comments = instance.comments
context = {
'title': 'Detail',
'object': instance,
'comments': comments,
'comment_form': comment_form,
'words_count': count_words(instance.get_markdown()),
'read_time': get_read_time(instance.get_markdown()),
}
return render(request, 'post_detail.html', context)
def detail(request, pk):
post = get_object_or_404(Post, pk=pk)
post.body = markdown.markdown(post.body,
extensions=[
'markdown.extensions.extra',
'markdown.extensions.codehilite',
'markdown.extensions.toc',
])
form = CommentForm()
comment_list = post.comment_set.all()
context = {'post': post, 'form': form, 'comment_list': comment_list}
return render(request, 'blog/detail.html', context=context)
def detail(request, pk):
post = get_object_or_404(Post, pk=pk)
form = CommentForm()
comment_list = post.comment_set.all()
md = markdown.Markdown(extensions=[
'markdown.extensions.toc', 'markdown.extensions.codehilite',
'markdown.extensions.extra'
])
post.body = md.convert(post.body)
post.increase_views()
return render(request,
'iblog/detail.html',
context={
'post': post,
'form': form,
'comment_list': comment_list,
'toc': md.toc
})
def detail(request, pk):
post = get_object_or_404(Post, pk=pk)
# 阅读量 +1,detail视图被调用一次说明访问一次，调用一下models.Post中的函数修改一下数据库
post.increase_views()
md = markdown.Markdown(extensions=[
'markdown.extensions.extra',
'markdown.extensions.codehilite',
'markdown.extensions.toc',
])
post.body = md.convert(post.body)
post.toc = md.toc
form = CommentForm()
# 获取这篇 post 下的全部评论
comment_list = post.comment_set.all()
# 将文章、表单、以及文章下的评论列表作为模板变量传给 detail.html 模板，以便渲染相应数据。
context = {'post': post, 'form': form, 'comment_list': comment_list}
return render(request, 'blog/detail.html', context=context)
def get_context_data(self, **kwargs):
context = super(Detail, self).get_context_data(**kwargs)
p = context['post']
comment_list = p.comment_set.all()
context['comment_list'] = comment_list
context['form'] = CommentForm()
# 阅读次数+1
p.read_nums += 1
p.save()
# markdown方法：Returns: An HTML document as a string.
md_obj = markdown.Markdown(extensions=[
'markdown.extensions.extra',
'markdown.extensions.codehilite',
'markdown.extensions.toc',
])
p.body = md_obj.convert(p.body)
p.toc = md_obj.toc
context['post'] = p
return context
def detail(request, pk):
post = get_object_or_404(Post, pk=pk)
# 引入markdown 格式，让文档能够转化为HTML格式
post.body = markdown.markdown(post.body,
extensions=[ # 以下是对markdown语法的扩展
'markdown.extensions.extra',
'markdown.extensions.codehilite',
'markdown.extensions.toc',
])
# 记得在顶部导入 CommentForm
form = CommentForm()
# 获取这篇 post 下的全部评论
comment_list = post.comment_set.all()
# 将文章、表单、以及文章下的评论列表作为模板变量传给 detail.html 模板，以便渲染相应数据。
context = {'post': post,
'form': form,
'comment_list': comment_list
}
return render(request, 'detail_blog/detail.html', context=context) # 返回详情页的HTML页面
def get_context_data(self, **kwargs):
context = super(DetailView, self).get_context_data(**kwargs)
form = CommentForm()
comment_list = self.object.comment_set.all().order_by('-create_time')
cpk = comment_list.order_by('create_time').last()
if cpk:
context.update({
'form': form,
'comment_list': comment_list,
'cpk': int(cpk.pk) + 1,
#'userinfo':profile_image_url
})
else:
context.update({
'form': form,
'comment_list': comment_list,
#'cpk': int(cpk.pk) + 1,
# 'userinfo':profile_image_url
})
return context