def post_list(request, category_id=None, tag_id=None):
tag = None
category = None
if tag_id:
# try……except：如果查询到不存在的对象，需要捕获并处理异常，避免当数据不存在时出现错误
try:
# tag 和 post 是多对多的关系，需要先获取tag对象，接着通过对象来获取对应的文章列表
tag = Tag.objects.get(id=tag_id)
except tag.DoesNotExist:
post_list = []
else:
post_list = tag.post_set.filter(status=Post.STATUS_NORMAL)
else:
# 逻辑如下：先取出状态正常的所有的Post的集合，在从其中过滤出指定id的Post。
# 而不是先过滤出指定id的Post，再看文章状态是否正常。
post_list = Post.objects.filter(status=Post.STATUS_NORMAL)
if category_id:
try:
category = Category.objects.get(id=category_id)
except Category.DoesNotExist:
category = None
else:
post_list = post_list.filter(category_id=category_id)
context = {
'category': category,
'tag': tag,
'post_list': post_list,
'sidebars': SideBar.get_all(),
}
context.update(Category.get_navs())
# 进行数据回传的时候，要注意context中的内容，不要把后面的加上''，成为'post_list'
return render(request, 'blog/list.html', context=context)
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
context.update({
'sidebars':SideBar.get_all(),
})
context.update(Category.get_navs())
return context
def post_list(request, category_id=None, tag_id=None):
tag = None
category = None
if tag_id:
post_list, tag = Post.get_by_tag(tag_id)
elif category_id:
post_list, category = Post.get_by_category(category_id)
else:
post_list = Post.latest_posts()
'''
try:
tag = Tag.objects.get(id=tag_id)
except Tag.DoesNotExist:
post_list = []
else:
post_list = tag.post_set.filter(status=Post.STATUS_NORMAL)
else:
post_list = Post.objects.filter(status=Post.STATUS_NORMAL)
if category_id:
try:
category = Category.objects.get(id=category_id)
except Category.DoesNotExist:
category = None
else:
post_list = post_list.filter(category_id=category_id)
'''
context = {
'category': category,
'tag': tag,
'post_list': post_list,
'sidebars': SideBar.get_all(),
}
context.update(Category.get_navs())
return render(request, 'blog/list.html', context=context)
def get_context_data(self, **kwargs):
context = super().get_context_data(
**kwargs) # TODO(Devin): object -> super() ???
context.update({
'sidebars': SideBar.get_all(),
})
context.update(Category.get_navs())
return context
def get_context_data(self, **kwargs):
from config.models import SideBar
context = super().get_context_data(**kwargs)
context.update({
'sidebars': SideBar.get_all(),
})
context.update(Category.get_navs())
return context
def post_detail(request, post_id):
try:
post = Post.objects.get(id=post_id)
except Post.DoesNotExist:
post = None
context = {"post": post, "sidebars": SideBar.get_all()}
context.update(Category.get_navs())
return render(request, "blog/detail.html", context=context)
def get_context_data(self, **kwargs):
# noinspection PyUnresolvedReferences
context = super().get_context_data(**kwargs)
context.update({
'sidebars': SideBar.get_all(),
})
context.update(Category.get_navs())
return context
def get_context_data(self, **kwargs): #用来获取上下文数据并传入模板中
context = super().get_context_data(
**kwargs) #当IndexView继承时,它去继承了ListView的context?
context.update({
'sidebars': SideBar.get_all(),
})
context.update(Category.get_navs())
return context
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
context.update({
'sidebars': SideBar.get_all(),
'keyword': '', # 此处添加keyword，解决VariableDoesNotExist报错
})
context.update(Category.get_navs())
return context
def get_context_data(self, **kwargs):
context = super().get_context_data(
**kwargs) # 获取上下文 这是一个多态的继承 super指的是下面IndexView这个类的继承
context.update({
'sidebars': SideBar.get_all(), # 侧边栏
})
context.update(Category.get_navs()) # 分类
return context
def post_detail(request, post_id=None, *args, **kwargs):
try:
post = Post.objects.get(id=post_id)
except Post.DoesNotExist:
post = None
context = {'post': post, 'sidebars': SideBar.get_all()}
context.update(Category.get_navs())
return render(request, 'detail.html', context=context)
def post_detail(request, post_id):
#return HttpResponse('detail')
try:
post = Post.objects.get(id=post_id)
except Post.DoesNotExist:
post = None
context = {'post': post, 'sidebars': SideBar.get_all()}
context.update(Category.get_navs())
return render(request, 'blog/detail.html', context)
def get_context_data(self, **kwargs):
# print(self.kwargs)
context = super().get_context_data(**kwargs)
context.update({'sidebar': SideBar.get_all()})
context.update(
{'link_list': Link.objects.filter(status=Link.STATUS_NORMAL)})
context.update(Category.get_navs())
# print(context)
return context
def get_context_data(self, **kwargs):
context = super(CommonViewMixin,self).get_context_data(**kwargs)
context.update({
'sidebars' : SideBar.get_all()
})
context.update(
Category.get_navs()
)
return context
def post_detail(request, post_id):
post = Post.objects.filter(id=post_id).first()
handle_visited(request, post_id)
context = {
'post': post,
'sidebars': SideBar.get_all(),
}
context.update(Category.get_navs())
return render(request, 'blog/detail.html', context=context)
def post_detail(request, post_id=None):
"""文章详情页"""
try:
post = Post.objects.get(id=post_id)
except Post.DoesNotExist:
post = None
context = {'post': post, 'sidebar_list': SideBar.get_all()}
return render(request, 'blog/detail.html', locals())
def post_detail(request, post_id=None):
try:
post = Post.objects.get(
id=post_id) # get方法只能匹配一条记录，返回字典形式，filter返回一个queryset列表
except:
post = None
context = {'post': post, 'sidebars': SideBar.get_all()}
context.update(Category.get_navs())
return render(request, 'blog/detail.html', context=context)
def get_context_data(self, **kwargs):
# print("demo -----------")
context = super().get_context_data(**kwargs)
context.update({
'sidebars': SideBar.get_all(),
})
context.update(Category.get_navs())
# print(context)
# print("sidebars",context['sidebars'])
return context
def post_detail(request, post_id=None):
try:
post = Post.objects.get(id=post_id)
except Post.DoesNotExist:
post = None
context = {
'post': post,
'sidebars': SideBar.get_all(),
}
return render(request, 'blog/detail.html', context=context)
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
context.update({
'sidebars':
SideBar.get_all(),
'comment_form':
CommentForm,
'comment_list':
Comment.get_by_target(self.request.path),
})
context.update(Category.get_navs())
return context
def post_detail(request, post_id=None):
try:
# 通过id获取指定的Post文章
post = Post.objects.get(id=post_id)
except Post.DoesNotExist:
post = None
context = {
'post': post,
'sidebars': SideBar.get_all(),
}
context.update(Category.get_navs())
return render(request, 'blog/detail.html', context=context)
def post_list(request, category_id=None, tag_id=None):
tag = None
category = None
'''
if tag_id:
try :
tag = Tag.objects.get(id=tag_id)
except Tag.DoesNotExist:
post_list = []
else:
post_list = tag.post_set.filter(status=Post.STATUS_NORMAL)
else:
post_list = Post.objects.filter(status=Post.STATUS_NORMAL)
if category_id:
try:
category = Category.objects.get(id=category_id)
except Category.DoesNotExist:
category = None
else:
post_list = post_list.Filter(category_id=category_id)
context = {
'category':category,
'tag':tag,
'post_list':post_list,
}
return render(request, 'blog/list.html', context=context)
'''
'''
如果查询到不存在的对象，需要通过try...except...来捕获并处理异常，避免当数据不存在时出现错误
tag与post是多对多关系，因此需要先获取tag对象，接着通过该对象来获取对应的文章列表。
'''
if tag_id:
post_list, tag = Post.get_by_tag(tag_id)
elif category_id:
post_list, category = Post.get_by_category(category_id)
else:
post_list = Post.latest_posts()
from config.models import SideBar
context = {
'category':category,
'tag': tag,
'post_list': post_list,
'sidebars': SideBar.get_all(),
}
context.update(Category.get_navs())
return render(request, 'blog/list.html', context=context)
def post_detail(request, post_id):
""" function view of post_detail"""
try:
post = Post.objects.get(id=post_id)
except Post.DoesNotExist:
post = None
context = {
'post': post,
'sidebars': SideBar.get_all(),
}
context.update(Category.get_navs())
return render(request, 'blog/detail.html', context=context)
def get_context_data(self, **kwargs):
context = super(PostListView, self).get_context_data(**kwargs)
context.update({
'category': self.category,
'tag': self.tag,
'owner': self.owner,
'sidebars': SideBar.get_all(),
})
context.update(Category.get_navs())
if self.request.GET.get('search'):
context.update({
'keyword': self.request.GET.get('search'),
})
return context
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
context.update({
'sidebars': SideBar.get_all(),
'categorys': Category.get_navs(),
'hot_posts': Post.hot_posts()[:6],
'new_posts': Post.new_posts()[:6],
'tags': Tag.latest_posta(),
'links': Link.show_list(),
'refer_post': Post.latest_posta()[:6],
'comment_form': CommentForm(),
'publish': PostAdminForm(),
})
return context
def post_list(request, category_id=None, tag_id=None):
tag = None
category = None
if tag_id:
post_list, tag = Post.get_by_tag(tag_id)
elif category_id:
post_list, category = Post.get_by_category(category_id)
else:
post_list = Post.latest_post()
context = {
'category': category,
'tag': tag,
'post_list': post_list,
'sidebars': SideBar.get_all(),
}
context.update(Category.get_nav())
return render(request, 'blog/list.html', context=context)
def post_detail(request, post_id):
try:
# 考虑id不存在的情况
post = Post.objects.get(id=post_id)
except Post.DoesNotExist:
post = None
tag_list = []
else:
# 多对多关系中查询出主表中所有的标签
tag_list = post.tag.all().filter(status=Tag.STATUS_NORMAL)
context = {
'post': post,
'tag_list': tag_list,
'sidebars': SideBar.get_all(),
}
context.update(Category.get_navs())
return render(request, 'blog/detail.html', context=context)
def post_detail(request, post_id=None):
# return HttpResponse('detail')
'''
在python的函数中和全局同名的变量，如果你有修改变量的值就会变成局部变量，
在修改之前对该变量的引用自然就会出现没定义这样的错误了，如果确定要引用全局变量，
并且要对它修改，必须加上global关键字。
'''
global Post
try:
post = Post.objects.get(id=post_id)
except Post.DoesNotExist:
Post = None
context = {
'post': post,
'sidebars': SideBar.get_all(),
}
context.update(Category.get_navs())
return render(request, 'blog/detail.html', context=context)
def tag_view(request, tag_id=None): # 函数形式
tag = None
category = None
if tag_id:
post_list, tag = Post.get_by_tag(tag_id)
else:
post_list = Post.latest_posts()
context = {
'category': category,
'tag': tag,
'post_list': post_list,
'sidebars': SideBar.get_all(),
}
context.update(
Category.get_navs()) # 将 Category.get_navs() 返回的字典 添加到 context字典
return render(request, 'blog/list.html', context=context)
def post_list(request,
category_id=None,
tag_id=None): #从数据库中拿到所有的文章，然后显示title和摘要
"""content = 'post_list: category_id={category_id}, tag_id ={tag_id}'.format( #{}与内容之间不能有空格
category_id=category_id,
tag_id=tag_id,
)
return HttpResponse(content)
return render(request, 'main/list.html', context={'name':'post_list'})"""
tag = None
category = None
if tag_id:
"""try:
tag = Tag.objects.get(id=tag_id) #tag与post是多对多的关系，所以需要先获取tag的对象 ？？
except Tag.DoesNotExist:
post_list = []
else: #try语句里也可以写else，表示没有意外，顺利执行的条件。可以
post_list = tag.post_set.filter(status=Post.STATUS_NORMAL) #tag.post 再思考下--可能是多对多不允许吧。下次写的时候注意点"""
post_list, tag = Post.get_by_tag(tag_id)
elif category_id:
"""post_list = Post.objects.filter(status=Post.STATUS_NORMAL)
if category_id:
try:
category = Category.objects.get(id=category_id)
except Post.DoesNotExist:
category = None
else:
post_list = post_list.filter(category_id=category_id)"""
post_list, category = Post.get_by_category(category_id)
else:
post_list = Post.latest_posts() #显示最新的文章
context = {
'category': category,
'tag': tag,
'post_list': post_list,
'sidebars': SideBar.get_all(),
}
context.update(Category.get_navs()) #??
return render(request, 'main/list.html', context=context)
