HABTM Relationship — How Can I Find A Record Based On An Attribute Of The Associated Model

Question

I have setup this HABTM relationship in the past and it has worked before....Now it isn\'t and I\'m at my wits end trying to figure out what\'s wrong. I\'ve looked

Answer 1

You need to include the interests table.

@events = Event.all(:include => :interests, :conditions => ["interests.id = ?", 4])

You had it right in your post, but you didn't pluralize interests.

Update

Because this answer is still getting attention, I thought it might be a good idea to update it using ActiveRecord::Relation syntax since the above way is going to be deprecated.

@events = Event.includes(:interests).where(interests: { id: 4 })

or

@events = Event.includes(:interests).where('interests.id' => 4)

And in case you want a custom condition

@events = Event.includes(:interests).where('interests.id >= 4')