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# Create your views here.
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from django.core.exceptions import ValidationError
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from django.http import HttpResponseRedirect
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from django.shortcuts import get_object_or_404
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from django.utils.decorators import method_decorator
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from django.views.decorators.csrf import csrf_protect
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from django.views.generic.edit import FormView
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from accounts.models import BlogUser
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from blog.models import Article
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from .forms import CommentForm
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from .models import Comment
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# 评论提交处理视图
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class CommentPostView(FormView):
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form_class = CommentForm# 指定使用的表单类
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template_name = 'blog/article_detail.html'# 表单无效时渲染的模板
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#为视图添加CSRF保护
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@method_decorator(csrf_protect)
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def dispatch(self, *args, **kwargs):
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return super(CommentPostView, self).dispatch(*args, **kwargs)
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# 处理GET请求：直接访问评论提交URL时重定向到文章详情页评论区
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def get(self, request, *args, **kwargs):
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article_id = self.kwargs['article_id']
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article = get_object_or_404(Article, pk=article_id)
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url = article.get_absolute_url()
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return HttpResponseRedirect(url + "#comments")
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# 表单验证失败时的处理：重新渲染文章详情页并显示表单错误
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def form_invalid(self, form):
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article_id = self.kwargs['article_id']
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article = get_object_or_404(Article, pk=article_id)
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return self.render_to_response({
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'form': form,
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'article': article
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})
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# 表单验证成功后的处理：保存评论并发送通知邮件
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def form_valid(self, form):
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"""提交的数据验证合法后的逻辑"""
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user = self.request.user# 获取当前登录用户
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author = BlogUser.objects.get(pk=user.pk)# 获取完整的用户信息
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article_id = self.kwargs['article_id']
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article = get_object_or_404(Article, pk=article_id)
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# 检查文章是否允许评论（评论状态或文章状态为关闭时抛出异常）
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if article.comment_status == 'c' or article.status == 'c':
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raise ValidationError("该文章评论已关闭.")
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# 创建评论实例但不保存到数据库
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comment = form.save(False)
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comment.article = article
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# 获取站点配置，判断评论是否需要审核
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from djangoblog.utils import get_blog_setting
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settings = get_blog_setting()
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if not settings.comment_need_review:
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comment.is_enable = True# 无需审核则直接启用评论
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comment.author = author# 设置评论作者
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# 处理父评论ID：如果存在则设置为回复评论
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if form.cleaned_data['parent_comment_id']:
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parent_comment = Comment.objects.get(
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pk=form.cleaned_data['parent_comment_id'])
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comment.parent_comment = parent_comment
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# 保存评论到数据库
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comment.save(True)
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# 重定向到文章详情页并定位到该评论锚点位置
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return HttpResponseRedirect(
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"%s#div-comment-%d" %
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(article.get_absolute_url(), comment.pk))
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