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A super-admin UI for Ash Framework, built with Phoenix LiveView.
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lib/ash_admin/actor_plug.ex
defmodule AshAdmin.ActorPlug do
@moduledoc false
@behaviour Plug
require Ash.Query
import AshAdmin.Helpers
def init(opts), do: opts
def call(conn, _opts) do
case conn.cookies do
%{"actor_resource" => "undefined"} ->
conn
session ->
actor_session(conn, session)
end
end
def actor_session(
conn,
%{
"actor_resource" => resource,
"actor_api" => api,
"actor_action" => action,
"actor_primary_key" => primary_key
} = session
) do
authorizing = session["actor_authorizing"] || false
actor_paused =
if is_nil(session["actor_paused"]) do
true
else
session["actor_paused"]
end
actor = actor_from_session(session)
authorizing = session_bool(authorizing)
actor_paused = session_bool(actor_paused)
conn
|> Plug.Conn.put_session(:actor_resource, resource)
|> Plug.Conn.put_session(:actor_api, api)
|> Plug.Conn.put_session(:actor_action, action)
|> Plug.Conn.put_session(:actor_primary_key, primary_key)
|> Plug.Conn.put_session(:actor_authorizing, authorizing)
|> Plug.Conn.put_session(:actor_paused, actor_paused)
|> Plug.Conn.assign(:actor, actor)
|> Plug.Conn.assign(:authorizing, authorizing || false)
|> Plug.Conn.assign(:actor_paused, actor_paused)
|> Plug.Conn.assign(:authorizing, authorizing)
end
def actor_session(conn, _), do: conn
def actor_api_from_session(%{"actor_api" => api}) do
Module.concat([api])
end
def actor_from_session(%{
"actor_resource" => resource,
"actor_api" => api,
"actor_primary_key" => primary_key,
"actor_action" => action
})
when not is_nil(resource) and not is_nil(api) do
resource = Module.concat([resource])
api = Module.concat([api])
action =
if action do
Ash.Resource.Info.action(resource, String.to_existing_atom(action), :read)
end
case decode_primary_key(resource, primary_key) do
:error ->
nil
{:ok, filter} ->
resource
|> Ash.Query.filter(^filter)
|> api.read_one!(action: action)
end
end
def actor_from_session(_), do: nil
def session_bool(value) do
case value do
"true" ->
true
"false" ->
false
"undefined" ->
false
boolean when is_boolean(boolean) ->
boolean
nil ->
false
end
end
end