keyword = '' post = collection.find({ 'key': '/^' + keyword })
如上面的代码所示，当keyword包含一些正则符号，比如$之类时，查询结果就不准确了。 不知道mongodb有没有内置转义的方法，还是说必须要外部对keyword进行转义？
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Mongodb’s regular expression query has two formats One is {key:{$regex:".*"}} The other is {key:/.*/} For the first escape use \ The second use
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Mongodb’s regular expression query has two formats
One is {key:{$regex:".*"}}
The other is {key:/.*/}
For the first escape use \
The second use