import datetime import logging import os import uuid from django.conf import settings from django.core.paginator import Paginator from django.http import HttpResponse, HttpResponseForbidden from django.shortcuts import get_object_or_404 from django.shortcuts import render from django.views.decorators.csrf import csrf_exempt from django.views.generic.detail import DetailView from django.views.generic.list import ListView from haystack.views import SearchView from blog.models import Article, Category, LinkShowType, Links, Tag from comments.forms import CommentForm from djangoblog.utils import cache, get_blog_setting, get_sha256 logger = logging.getLogger(__name__) class ArticleListView(ListView): # template_name属性用于指定使用哪个模板进行渲染 template_name = 'blog/article_index.html' # context_object_name属性用于给上下文变量取名（在模板中使用该名字） context_object_name = 'article_list' # 页面类型，分类目录或标签列表等 page_type = '' paginate_by = settings.PAGINATE_BY page_kwarg = 'page' link_type = LinkShowType.L def get_view_cache_key(self): return self.request.get['pages'] @property def page_number(self): page_kwarg = self.page_kwarg page = self.kwargs.get( page_kwarg) or self.request.GET.get(page_kwarg) or 1 return page def get_queryset_cache_key(self): """ 子类重写.获得queryset的缓存key """ raise NotImplementedError() def get_queryset_data(self): """ 子类重写.获取queryset的数据 """ raise NotImplementedError() def get_queryset_from_cache(self, cache_key): ''' 缓存页面数据 :param cache_key: 缓存key :return: ''' value = cache.get(cache_key) if value: logger.info('get view cache.key:{key}'.format(key=cache_key)) return value else: article_list = self.get_queryset_data() cache.set(cache_key, article_list) logger.info('set view cache.key:{key}'.format(key=cache_key)) return article_list def get_queryset(self): ''' 重写默认，从缓存获取数据 :return: ''' key = self.get_queryset_cache_key() value = self.get_queryset_from_cache(key) return value def get_context_data(self, **kwargs): kwargs['linktype'] = self.link_type return super(ArticleListView, self).get_context_data(**kwargs) class IndexView(ArticleListView): ''' 首页 ''' # 友情链接类型 link_type = LinkShowType.I def get_queryset_data(self): article_list = Article.objects.filter(type='a', status='p') return article_list def get_queryset_cache_key(self): cache_key = 'index_{page}'.format(page=self.page_number) return cache_key class ArticleDetailView(DetailView): ''' 文章详情页面 ''' template_name = 'blog/article_detail.html' model = Article pk_url_kwarg = 'article_id' context_object_name = "article" def get_object(self, queryset=None): obj = super(ArticleDetailView, self).get_object() obj.viewed() self.object = obj return obj def get_context_data(self, **kwargs): comment_form = CommentForm() article_comments = self.object.comment_list() parent_comments = article_comments.filter(parent_comment=None) blog_setting = get_blog_setting() paginator = Paginator(parent_comments, blog_setting.article_comment_count) page = self.request.GET.get('comment_page', 1) p_comments = paginator.page(page) next_page = p_comments.next_page_number() if p_comments.has_next() else None prev_page = p_comments.previous_page_number() if p_comments.has_previous() else None if next_page: kwargs[ 'comment_next_page_url'] = self.object.get_absolute_url() + f'?comment_page={next_page}#commentlist-container' if prev_page: kwargs[ 'comment_prev_page_url'] = self.object.get_absolute_url() + f'?comment_page={prev_page}#commentlist-container' kwargs['form'] = comment_form kwargs['article_comments'] = article_comments kwargs['p_comments'] = p_comments kwargs['comment_count'] = len( article_comments) if article_comments else 0 kwargs['next_article'] = self.object.next_article kwargs['prev_article'] = self.object.prev_article return super(ArticleDetailView, self).get_context_data(**kwargs) class CategoryDetailView(ArticleListView): ''' 分类目录列表 ''' page_type = "分类目录归档" def get_queryset_data(self): slug = self.kwargs['category_name'] category = get_object_or_404(Category, slug=slug) categoryname = category.name self.categoryname = categoryname categorynames = list( map(lambda c: c.name, category.get_sub_categorys())) article_list = Article.objects.filter( category__name__in=categorynames, status='p') return article_list def get_queryset_cache_key(self): slug = self.kwargs['category_name'] category = get_object_or_404(Category, slug=slug) categoryname = category.name self.categoryname = categoryname cache_key = 'category_list_{categoryname}_{page}'.format( categoryname=categoryname, page=self.page_number) return cache_key def get_context_data(self, **kwargs): categoryname = self.categoryname try: categoryname = categoryname.split('/')[-1] except BaseException: pass kwargs['page_type'] = CategoryDetailView.page_type kwargs['tag_name'] = categoryname return super(CategoryDetailView, self).get_context_data(**kwargs) class AuthorDetailView(ArticleListView): ''' 作者详情页 ''' page_type = '作者文章归档' def get_queryset_cache_key(self): from uuslug import slugify author_name = slugify(self.kwargs['author_name']) cache_key = 'author_{author_name}_{page}'.format( author_name=author_name, page=self.page_number) return cache_key def get_queryset_data(self): author_name = self.kwargs['author_name'] article_list = Article.objects.filter( author__username=author_name, type='a', status='p') return article_list def get_context_data(self, **kwargs): author_name = self.kwargs['author_name'] kwargs['page_type'] = AuthorDetailView.page_type kwargs['tag_name'] = author_name return super(AuthorDetailView, self).get_context_data(**kwargs) class TagDetailView(ArticleListView): ''' 标签列表页面 ''' page_type = '分类标签归档' def get_queryset_data(self): slug = self.kwargs['tag_name'] tag = get_object_or_404(Tag, slug=slug) tag_name = tag.name self.name = tag_name article_list = Article.objects.filter( tags__name=tag_name, type='a', status='p') return article_list def get_queryset_cache_key(self): slug = self.kwargs['tag_name'] tag = get_object_or_404(Tag, slug=slug) tag_name = tag.name self.name = tag_name cache_key = 'tag_{tag_name}_{page}'.format( tag_name=tag_name, page=self.page_number) return cache_key def get_context_data(self, **kwargs): # tag_name = self.kwargs['tag_name'] tag_name = self.name kwargs['page_type'] = TagDetailView.page_type kwargs['tag_name'] = tag_name return super(TagDetailView, self).get_context_data(**kwargs) class ArchivesView(ArticleListView): ''' 文章归档页面 ''' page_type = '文章归档' paginate_by = None page_kwarg = None template_name = 'blog/article_archives.html' def get_queryset_data(self): return Article.objects.filter(status='p').all() def get_queryset_cache_key(self): cache_key = 'archives' return cache_key class LinkListView(ListView): model = Links template_name = 'blog/links_list.html' def get_queryset(self): return Links.objects.filter(is_enable=True) class EsSearchView(SearchView): def get_context(self): paginator, page = self.build_page() context = { "query": self.query, "form": self.form, "page": page, "paginator": paginator, "suggestion": None, } if hasattr(self.results, "query") and self.results.query.backend.include_spelling: context["suggestion"] = self.results.query.get_spelling_suggestion() context.update(self.extra_context()) return context @csrf_exempt def fileupload(request): """ 该方法需自己写调用端来上传图片，该方法仅提供图床功能 :param request: :return: """ if request.method == 'POST': sign = request.GET.get('sign', None) if not sign: return HttpResponseForbidden() if not sign == get_sha256(get_sha256(settings.SECRET_KEY)): return HttpResponseForbidden() response = [] for filename in request.FILES: timestr = datetime.datetime.now().strftime('%Y/%m/%d') imgextensions = ['jpg', 'png', 'jpeg', 'bmp'] fname = u''.join(str(filename)) isimage = len([i for i in imgextensions if fname.find(i) >= 0]) > 0 blogsetting = get_blog_setting() basepath = r'{basedir}/{type}/{timestr}'.format( basedir=blogsetting.resource_path, type='files' if not isimage else 'image', timestr=timestr) if settings.TESTING: basepath = settings.BASE_DIR + '/uploads' url = 'https://resource.lylinux.net/{type}/{timestr}/{filename}'.format( type='files' if not isimage else 'image', timestr=timestr, filename=filename) if not os.path.exists(basepath): os.makedirs(basepath) savepath = os.path.normpath(os.path.join(basepath, f"{uuid.uuid4().hex}{os.path.splitext(filename)[-1]}")) if not savepath.startswith(basepath): return HttpResponse("only for post") with open(savepath, 'wb+') as wfile: for chunk in request.FILES[filename].chunks(): wfile.write(chunk) if isimage: from PIL import Image image = Image.open(savepath) image.save(savepath, quality=20, optimize=True) response.append(url) return HttpResponse(response) else: return HttpResponse("only for post") def page_not_found_view( request, exception, template_name='blog/error_page.html'): if exception: logger.error(exception) url = request.get_full_path() return render(request, template_name, {'message': '哎呀，您访问的地址 ' + url + ' 是一个未知的地方。请点击首页看看别的？', 'statuscode': '404'}, status=404) def server_error_view(request, template_name='blog/error_page.html'): return render(request, template_name, {'message': '哎呀，出错了，我已经收集到了错误信息，之后会抓紧抢修，请点击首页看看别的？', 'statuscode': '500'}, status=500) def permission_denied_view( request, exception, template_name='blog/error_page.html'): if exception: logger.error(exception) return render( request, template_name, { 'message': '哎呀，您没有权限访问此页面，请点击首页看看别的？', 'statuscode': '403'}, status=403)