django 添加自定义context

文档参考;http://python.usyiyi.cn/django_182/ref/templates/api.html

添加自定义上下文文件custom_processors.py

 # coding=utf-8

 from .models import Article,Category
 from django.db.models import Count

 def month_list(request):
     articles = Article.objects.all()
     year_month = set()
     for a in articles:
         year_month.add((a.cre_date.year,a.cre_date.month))
     counter = {}.fromkeys(year_month,0)
     for a in articles:
         counter[(a.cre_date.year,a.cre_date.month)]+=1
     year_month_number = []
     for key in counter:
         year_month_number.append([key[0],key[1],counter[key]])
     year_month_number.sort(reverse=True)
     return {'year_month_number': year_month_number}

 def category(request):
     category = Category.objects.annotate(num_article=Count('article'))
     return {"categories": category}

更在setting.py文件

 TEMPLATES = [
     {
         'BACKEND': 'django.template.backends.django.DjangoTemplates',
         'DIRS': [],
         'APP_DIRS': True,
         'OPTIONS': {
             'context_processors': [
                 'django.template.context_processors.debug',
                 'django.template.context_processors.request',
                 'django.contrib.auth.context_processors.auth',
                 'django.contrib.messages.context_processors.messages',
                 'blog.custom_processors.month_list',
                 'blog.custom_processors.category'
             ],
         },
     },
 ]

可以在前端使用year_month_number和categories