45 lines
1.4 KiB
Elixir
45 lines
1.4 KiB
Elixir
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defmodule UiWeb.ErrorHelpers do
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@moduledoc """
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Conveniences for translating and building error messages.
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"""
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use Phoenix.HTML
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@doc """
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Generates tag for inlined form input errors.
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"""
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def error_tag(form, field) do
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Enum.map(Keyword.get_values(form.errors, field), fn error ->
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content_tag(:span, translate_error(error), class: "help-block")
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end)
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end
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@doc """
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Translates an error message using gettext.
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"""
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def translate_error({msg, opts}) do
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# When using gettext, we typically pass the strings we want
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# to translate as a static argument:
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#
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# # Translate "is invalid" in the "errors" domain
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# dgettext("errors", "is invalid")
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#
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# # Translate the number of files with plural rules
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# dngettext("errors", "1 file", "%{count} files", count)
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#
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# Because the error messages we show in our forms and APIs
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# are defined inside Ecto, we need to translate them dynamically.
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# This requires us to call the Gettext module passing our gettext
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# backend as first argument.
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#
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# Note we use the "errors" domain, which means translations
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# should be written to the errors.po file. The :count option is
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# set by Ecto and indicates we should also apply plural rules.
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if count = opts[:count] do
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Gettext.dngettext(UiWeb.Gettext, "errors", msg, msg, count, opts)
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else
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Gettext.dgettext(UiWeb.Gettext, "errors", msg, opts)
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end
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end
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end
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