add 过滤器：加法或者字符串拼接，列表拼接
views.py 代码
1 from django.shortcuts import render,HttpResponse,redirect,reverse 2 3 def add_view(request): 4 context = { 5 'value1':[1, 2, 3, 4], 6 'value2':['a', 'b', 'c', 'd'] 7 } 8 return render(request, 'index.html', context=context)
index.html 代码
1 <!DOCTYPE html> 2 <html lang="en"> 3 <head> 4 <meta charset="UTF-8"> 5 <title>模板渲染</title> 6 </head> 7 <body> 8 {{ '1'|add:'2' }} 9 <!-- 输出3 --> 10 <br> 11 {{ value1|add:value2 }} 12 <!-- 输出 [1, 2, 3, 4, 'a', 'b', 'c', 'd'] --> 13 </body> 14 </html>
cut 过滤器：剪切掉指定字符串
views.py 代码
1 from django.shortcuts import render,HttpResponse,redirect,reverse 2 3 def cut_view(request): 4 return render(request, 'index.html')
index.html 代码
1 <!DOCTYPE html> 2 <html lang="en"> 3 <head> 4 <meta charset="UTF-8"> 5 <title>模板渲染</title> 6 </head> 7 <body> 8 {{ '1234'|cut:'2' }} 9 <!-- 输出 134 --> 10 </body> 11 </html>