+ @id_keys Pagination.page_keys() -- ["limit", "order"]
+ defp build_pagination_fields(conn, min_id, max_id, extra_params) do
+ params =
+ conn.params
+ |> Map.drop(Map.keys(conn.path_params) |> Enum.map(&String.to_existing_atom/1))
+ |> Map.merge(extra_params)
+ |> Map.drop(@id_keys)
+
+ %{
+ "next" => current_url(conn, Map.put(params, :max_id, max_id)),
+ "prev" => current_url(conn, Map.put(params, :min_id, min_id)),
+ "id" => current_url(conn)
+ }
+ end
+
+ def get_pagination_fields(conn, entries, extra_params \\ %{}) do
+ case List.last(entries) do
+ %{pagination_id: max_id} when not is_nil(max_id) ->
+ %{pagination_id: min_id} = List.first(entries)
+
+ build_pagination_fields(conn, min_id, max_id, extra_params)
+
+ %{id: max_id} ->
+ %{id: min_id} = List.first(entries)
+
+ build_pagination_fields(conn, min_id, max_id, extra_params)
+
+ _ ->
+ %{}
+ end
+ end
+