在Django中增加页面命中计数-IncrementPageHitCountinDjango

31  

If you use Django 1.1+, just use F expressions:

如果使用Django 1.1+，只需使用F表达式:

from django.db.models import F
...
MyModel.objects.filter(id=...).update(hit_count=F('hit_count')+1)

This will perform a single atomic database query.

这将执行单个原子数据库查询。

As gerdemb says, you should consider putting this in a middleware to make it easily reusable so it doesn't clutter up all your views.

正如gerdemb所说，您应该考虑将它放在一个中间件中，以使其易于重用，从而不会使您的所有视图变得混乱。

4  

As gerdemb says, you should write it into a middleware to make it really reusable. Or (simpler) write a function decorator. In fact, there are adaptors to use a middleware as a decorator and viceversa.

正如gerdemb所说，您应该将它编写到中间件中，以使其真正可重用。或者(更简单)编写函数decorator。事实上，有一些适配器将中间件用作decorator和viceversa。

But if you're worried about performance and want to keep the DB queries per page hit low, you can use memcached's atomic increment operation. of course, in this case, you have to take care of persistence yourself.

但是，如果您担心性能问题，并希望将每个页面的DB查询保持在较低的水平，那么可以使用memcached的原子增量操作。当然，在这种情况下，您必须自己处理持久性。

0  

The model conventions won't be atomic; write it by hand:

模型约定不会是原子的;用手把它写:

BEGIN
SELECT * FROM table WHERE id=3 FOR UPDATE
UPDATE table SET hit_count=hit_count+1 WHERE id=3
COMMIT

0  

I would start by looking at the documentation for middleware. Ignacio's comment about the lack of atomic transactions is true, but this is a problem with the entire Django framework. Unless you're concerned about having a 100% accurate counter I wouldn't worry about it.

我将首先查看中间件的文档。Ignacio关于缺乏原子事务的评论是正确的，但是这是整个Django框架的问题。除非你担心有一个100%精确的计数器，否则我不会担心。