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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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class CommentPostView(FormView):
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"""
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处理文章评论提交的视图
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使用 FormView 来处理表单提交
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"""
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form_class = CommentForm # 使用的表单类
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template_name = 'blog/article_detail.html' # 表单出错时重新渲染的模板
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@method_decorator(csrf_protect)
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def dispatch(self, *args, **kwargs):
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# 强制开启 CSRF 防护
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return super(CommentPostView, self).dispatch(*args, **kwargs)
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def get(self, request, *args, **kwargs):
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"""
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GET 请求时直接跳回文章详情页（因为评论应为 POST 行为）
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"""
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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") # 跳转到评论区域
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def form_invalid(self, form):
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"""
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表单校验失败时重新渲染页面并显示错误信息
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"""
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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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def form_valid(self, form):
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"""
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表单提交且内容合法时执行写入数据库逻辑
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"""
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user = self.request.user
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author = BlogUser.objects.get(pk=user.pk) # 获取当前评论的用户对象
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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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# 判断文章是否允许评论 (‘c’ 表示关闭评论状态)
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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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# 创建一个未保存的 comment 对象
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comment = form.save(False)
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comment.article = article
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# 获取博客配置：是否需要审核评论
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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 # 如果无需审核，直接设为可显示
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comment.author = author
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# 处理父评论（即：回复某条评论）
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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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comment.save(True) # 保存评论
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# 评论成功后跳回评论处
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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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