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phx_new
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1.3.5
Phoenix framework project generator. Provides a `mix phx.new` task to bootstrap a new Elixir application with Phoenix dependencies.
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templates/phx_web/views/error_helpers.ex
defmodule <%= web_namespace %>.ErrorHelpers do
@moduledoc """
Conveniences for translating and building error messages.
"""<%= if html do %>
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, translate_error(error),
class: "invalid-feedback",
phx_feedback_for: input_name(form, field)
)
end)
end<% end %><%= if gettext do %>
@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(<%= web_namespace %>.Gettext, "errors", msg, msg, count, opts)
else
Gettext.dgettext(<%= web_namespace %>.Gettext, "errors", msg, opts)
end
end<% else %>
@doc """
Translates an error message.
"""
def translate_error({msg, opts}) do
# Because the error messages we show in our forms and APIs
# are defined inside Ecto, we need to translate them dynamically.
Enum.reduce(opts, msg, fn {key, value}, acc ->
String.replace(acc, "%{#{key}}", to_string(value))
end)
end<% end %>
end