Searching for fields that don't match a regex in MongoMapper

Question

In MongoMapper I can use the following query to search for items based on regex match: ``` Foo.where(:name => /Foo.*/) ``` How can I search for items that their `name` field do not match `/Foo.*/`?

Accepted Answer

You can use `$not`

```
db.customers.find( { name : { $not : /acme.*corp/i } } );
```

Searching for fields that don't match a regex in MongoMapper

Solution

Problem