Gettext not working with validate_length

While useful for being able to extract those strings, that shouldn’t be necessary at all. MyAppWeb.ErrorHelper will run any ecto error through a translation step.

Maybe are you editing the wrong message in your errors.po?
Did you translate all the messages ?

I think the validate_length is handled by multiple messages:

msgid "should be %{count} character(s)"
msgid "should be at least %{count} character(s)"
msgid "should be at most %{count} character(s)"

Have you all that translated ?

Maybe show us what it looks like the part of the file you edited.

Oh I see ! You are using a custom error message. In that case you should use a gettext backend in your changeset like this:

|> validate_required([:password], message: MyApp.Gettext.gettext(“test validate required”))

Then of course you will use mix gettext to extract the new message into your po files. You don’t have to add the msgid by hand.