#returns an ActiveRecord::Relation object
@blogs = Blog.all

# Search for the blog within that ActiveRecord::Relation object, NOT the database
@blogs.find_by(id: 1).title #do this statement but don't hit the database again

@blogs.find {|b| b.id == 1}

@blogs.detect { |b| b.id == 1 }

@blogs.where(id: 1).first.reload