How to make a query with or condition in mongoid

问题

How can I make a query with or condition in Mongoid.

回答1:

Here is the solution for "OR" query in mongoid.

if you want query like below

select * from user where id = 10 or name = 'hitesh';

in rails with mongoid then you have to write query like this

User.any_of({id: 10},{name: 'hitesh'}).first

回答2:

This also works:

User.or({id: 10},{name: 'hitesh'})

回答3:

@Simone Carletti is right but you also can use "mongo-style" notation:

# Ruby 1.9+
Person.where(last_name: {"$in" => ["Penn", "Teller"]})
#Ruby 1.9-
Person.where(:las_name => {"$in" => ["Penn", "Teller"]})

or simply

Person.where(:last_name.in => ["Penn", "Teller"])

upd

Conditions for two fields?

Person.where(:last_name.in => ["Penn", "Teller"], :first_name.in => ["Pedro", "Julio"])

来源：https://stackoverflow.com/questions/7598450/how-to-make-a-query-with-or-condition-in-mongoid