Appropriate method for no-op AR Query chain

[jred...@salsify.com]

With Rails 3, we had a number of method-defined scopes along these lines:

def self.with_name(name)

  if name.present?

    where(name: name)

  else

    scoped

  end

end

In Rails 4, `Model#scoped` is obviously deprecated and recommends replacing with `Model#all`. But it looks like `Relation#all` is deprecated as well. What's the "right" way to do this in Rails 4?

Looking at the code and docs, the best approach I've found is to use `where(nil)` but that doesn't feel particularly idiomatic. Any better approaches?

Thanks much,

Jeremy