philomena/lib/philomena_web/views/error_helpers.ex
byte[] d851e8cf62 various fixes:
line-heights
ability to edit filters
fix tag parameter decoding again
better error_tag message
2019-12-12 10:51:44 -05:00

52 lines
1.6 KiB
Elixir

defmodule PhilomenaWeb.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
Enum.map(Keyword.get_values(form.errors, field), fn error ->
content_tag(:span, humanize_name(field) <> translate_error(error), class: "help-block")
end)
end
@doc """
Translates an error message using gettext.
"""
def translate_error({msg, opts}) do
# When using gettext, we typically pass the strings we want
# to translate as a static argument:
#
# # Translate "is invalid" in the "errors" domain
# dgettext("errors", "is invalid")
#
# # Translate the number of files with plural rules
# dngettext("errors", "1 file", "%{count} files", count)
#
# Because the error messages we show in our forms and APIs
# are defined inside Ecto, we need to translate them dynamically.
# This requires us to call the Gettext module passing our gettext
# backend as first argument.
#
# Note we use the "errors" domain, which means translations
# should be written to the errors.po file. The :count option is
# set by Ecto and indicates we should also apply plural rules.
if count = opts[:count] do
Gettext.dngettext(PhilomenaWeb.Gettext, "errors", msg, msg, count, opts)
else
Gettext.dgettext(PhilomenaWeb.Gettext, "errors", msg, opts)
end
end
defp humanize_name(field) do
field
|> to_string()
|> String.replace("_", " ")
|> String.capitalize()
|> Kernel.<>(" ")
end
end