debianize-mobilizon/lib/mobilizon/storage/ecto.ex

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Elixir
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2019-09-08 01:49:56 +02:00
defmodule Mobilizon.Storage.Ecto do
@moduledoc """
Mobilizon Ecto utils
"""
import Ecto.Query, warn: false
import Ecto.Changeset, only: [fetch_change: 2, put_change: 3, get_field: 2]
alias Ecto.{Changeset, Query}
alias Mobilizon.Web.Endpoint
alias Mobilizon.Web.Router.Helpers, as: Routes
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@doc """
Adds sort to the query.
"""
@spec sort(Query.t(), atom, atom) :: Query.t()
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def sort(query, sort, direction) do
from(query, order_by: [{^direction, ^sort}])
end
@doc """
Ensure changeset contains an URL
If there's a blank URL that's because we're doing the first insert.
Most of the time just go with the given URL.
"""
@spec ensure_url(Changeset.t(), atom()) :: Changeset.t()
def ensure_url(%Changeset{data: %{url: nil}} = changeset, route) do
case fetch_change(changeset, :url) do
{:ok, _url} ->
changeset
:error ->
generate_url(changeset, route)
end
end
def ensure_url(%Changeset{} = changeset, _route), do: changeset
@spec generate_url(Changeset.t(), atom()) :: Changeset.t()
defp generate_url(%Changeset{} = changeset, route) do
uuid = Ecto.UUID.generate()
changeset
|> put_change(:id, uuid)
|> put_change(
:url,
apply(Routes, String.to_existing_atom("page_url"), [Endpoint, route, uuid])
)
end
@spec maybe_add_published_at(Changeset.t()) :: Changeset.t()
def maybe_add_published_at(%Changeset{} = changeset) do
if is_nil(get_field(changeset, :published_at)) do
put_change(changeset, :published_at, DateTime.utc_now() |> DateTime.truncate(:second))
else
changeset
end
end
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end