As the I18n guide says, the translate
function interpolates variables passed in the %{}
brackets using its second argument (a hash).
In your case you need to tell it the model
by doing this:
I18n.t("helpers.submit.create", model: "Product type")
If you want a generic option that would work for any model, you can see how Rails itself does it by looking at the source on GitHub - it's something like
I18n.t("helpers.submit.create", model: f.object.class.model_name.human)
As an aside, you don't need to (and probably shouldn't) use raw
there. What you are trying to achieve could easily be done with the built-in helpers:
link_to ... do
content_tag :div, label, class: "#{icon} icon-white"
end