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web/views/error_helpers.ex
defmodule VerkWeb.ErrorHelpers do
@moduledoc """
Conveniences for translating and building error messages.
"""
use Phoenix.HTML
@doc """
Generates tag for inlined form input errors.
"""
def error_tag(form, field) do
if error = form.errors[field] do
content_tag :span, translate_error(error), class: "help-block"
end
end
@doc """
Translates an error message using gettext.
"""
def translate_error({msg, opts}) do
# Because error messages were defined within Ecto, we must
# call the Gettext module passing our Gettext backend. We
# also use the "errors" domain as translations are placed
# in the errors.po file. On your own code and templates,
# this could be written simply as:
#
# dngettext "errors", "1 file", "%{count} files", count
#
Gettext.dngettext(VerkWeb.Gettext, "errors", msg, msg, opts[:count], opts)
end
def translate_error(msg) do
Gettext.dgettext(VerkWeb.Gettext, "errors", msg)
end
end