Support remove queries

[fsouza]

Add support to remove queries

[fsouza]

We can do on normal query:

Person.query.filter({'first_name' : 'John'}).remove_all()

[zqkou]

I tried with:
Person.query.filter({'first_name' : 'John'}).remove_all()

But get following error message:
TypeError: remove_all() takes at least 2 arguments (1 given)

What am I missing here? Thanks!

[fsouza]

@zqkou it looks like mongoalchemy now requires a qfield on remove_all. A qfield is an instance of mongoalchemy.QueryField: http://www.mongoalchemy.org/api/expressions/update_expressions.html#mongoalchemy.update_expression.UpdateExpression.remove_all

I'm not very familiar with the recent versions of mongoalchemy, but I can try to dig this up later. I'll reopen this issue.