问题
I have finally started upgrading my Rails apps from 2.3.8 to 3.1.0. I was watching RailsCasts (http://railscasts.com/episodes/202-active-record-queries-in-rails-3) about Active Record queries.
When I open up the console (rails c) and do query similar to this:
articles = Article.order("name")
Instead of returning Active Record relations, I see the query executed. What am I doing wrong here?
Rails version: 3.1.0
RVM on 1.9.2
Thank you for your help!
EDIT: I have added a screenshot from the example.
回答1:
You're doing everything right. You see query executed because console invokes inspect method on output. Try articles = Article.order("name").class
回答2:
The ActiveRecord Relation class is configured to perform the query when a query method like .all, .last, .first, ... is invoked. The list of method also includes .inspect, the same method called by the console to display the representation of the return value.
For this reason it seems to you that the object is never a relation, because you always see the result of the query.
But if you inspect the object class, you'll notice it's a relation
Article.order("name").class
# => ActiveRecord::Relation
来源：https://stackoverflow.com/questions/7646199/why-active-record-relation-is-not-returned-in-console