Question

I want to add a :limit clause to delete_all... how can I do that?

One method I can think of is to override the default delete_all, but I cant get it to work… the add_conditions! function isn’t defined!

Answer 1

There’s no need to override anything:

# Rails 2
SomeModel.scoped(:limit => 10).destroy_all

# Rails 3
SomeModel.limit(10).destroy_all

---

Edit: Passing spec:

it "should destroy all using scope" do
  10.times { SomeModel.create }
  expect {
    SomeModel.limit(5).destroy_all
  }.to change(SomeModel, :count).by(-5)
  SomeModel.count.should == 5
end