django 添加自定义context

Posted 2020-07-16 hb91

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

 1 # coding=utf-8
 2 
 3 from .models import Article,Category
 4 from django.db.models import Count
 5 
 6 def month_list(request):
 7     articles = Article.objects.all()
 8     year_month = set()
 9     for a in articles:
10         year_month.add((a.cre_date.year,a.cre_date.month))
11     counter = {}.fromkeys(year_month,0)
12     for a in articles:
13         counter[(a.cre_date.year,a.cre_date.month)]+=1
14     year_month_number = []
15     for key in counter:
16         year_month_number.append([key[0],key[1],counter[key]])
17     year_month_number.sort(reverse=True)
18     return {‘year_month_number‘: year_month_number}
19 
20 def category(request):
21     category = Category.objects.annotate(num_article=Count(‘article‘))
22     return {"categories": category}

 

更在setting.py文件

 1 TEMPLATES = [
 2     {
 3         ‘BACKEND‘: ‘django.template.backends.django.DjangoTemplates‘,
 4         ‘DIRS‘: [],
 5         ‘APP_DIRS‘: True,
 6         ‘OPTIONS‘: {
 7             ‘context_processors‘: [
 8                 ‘django.template.context_processors.debug‘,
 9                 ‘django.template.context_processors.request‘,
10                 ‘django.contrib.auth.context_processors.auth‘,
11                 ‘django.contrib.messages.context_processors.messages‘,
12                 ‘blog.custom_processors.month_list‘,
13                 ‘blog.custom_processors.category‘
14             ],
15         },
16     },
17 ]

 

可以在前端使用year_month_number和categories