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phoenix priv templates phoenix.gen.json changeset_view.ex
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priv/templates/phoenix.gen.json/changeset_view.ex

defmodule <%= base %>.ChangesetView do
use <%= base %>.Web, :view
@doc """
Traverses and translates changeset errors.
See `Ecto.Changeset.traverse_errors/2` and
`<%= base %>.ErrorHelpers.translate_error/1` for more details.
"""
def translate_errors(changeset) do
Ecto.Changeset.traverse_errors(changeset, &translate_error/1)
end
def render("error.json", %{changeset: changeset}) do
# When encoded, the changeset returns its errors
# as a JSON object. So we just pass it forward.
%{errors: translate_errors(changeset)}
end
end