Is there an activerecord relationship to solve this problem?

I your User model, this line should be present for polymorphic relationships class User has_many :messages has_many :mentions, :as => :mentionable end And try this: user_id = 10 @messages = Message. Find(:all, :joins => :mentions, :conditions => 'messages. User_id =?', user_id).

I your User model, this line should be present for polymorphic relationships. Class User has_many :messages has_many :mentions, :as => :mentionable end And try this: user_id = 10 @messages = Message. Find(:all, :joins => :mentions, :conditions => 'messages.

User_id =? ', user_id).

Or if you're using rails3 go with Message. Joins(:mentions). Where(:user_id => user_id), haven't played around with that much so you might have to change the where clause to .

Where("messages. User_id =? ", user_id) if you get an ambiguous column name error from your database.

Not 100% sure how rails handles the hash syntax in . Where – nzifnab Mar 11 at 5:09 That's exactly what I needed. Thanks much.

– Adam Rubin Mar 12 at 21:45.

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