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Utilities for integrating Ash and Phoenix
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Files
lib/ash_phoenix/plug/subdomain_plug.ex
# SPDX-FileCopyrightText: 2020 ash_phoenix contributors <https://github.com/ash-project/ash_phoenix/graphs.contributors>
#
# SPDX-License-Identifier: MIT
defmodule AshPhoenix.SubdomainPlug do
@plug_options [
endpoint: [
type: :atom,
doc: "The endpoint that the plug is in, used for deterining the host",
required: true
],
assign: [
type: :atom,
doc: "The key to use when assigning the current tenant",
default: :current_tenant
],
handle_subdomain: [
type: :mfa,
doc:
"An mfa to call with the conn and a subdomain value. Can be used to do something like fetch the current user given the tenant. Must return the new conn."
]
]
@moduledoc """
This is a basic plug that loads the current tenant assign from a given
value set on subdomain.
This was copied from `Triplex.SubdomainPlug`, here:
https://github.com/ateliware/triplex/blob/master/lib/triplex/plugs/subdomain_plug.ex
Options:
#{Spark.Options.docs(@plug_options)}
To plug it on your router, you can use:
plug AshPhoenix.SubdomainPlug,
endpoint: MyApp.Endpoint
An additional helper here can be used for determining the host in your liveview, and/or using
the host that was already assigned to the conn.
For example:
def handle_params(params, uri, socket) do
socket =
assign_new(socket, :current_tenant, fn ->
AshPhoenix.SubdomainPlug.live_tenant(socket, uri)
end)
socket =
assign_new(socket, :current_organization, fn ->
if socket.assigns[:current_tenant] do
MyApp.Accounts.Ash.get!(MyApp.Accounts.Organization,
subdomain: socket.assigns[:current_tenant]
)
end
end)
{:noreply, socket}
end
"""
@doc false
def init(opts), do: Spark.Options.validate!(opts, @plug_options)
@doc false
def call(conn, opts) do
subdomain =
AshPhoenix.Helpers.get_subdomain(conn, opts[:endpoint])
conn
|> Plug.Conn.assign(opts[:assign], subdomain)
|> call_handle_subdomain(subdomain, opts)
end
if Code.ensure_loaded?(Phoenix.LiveView) do
def live_tenant(socket, url) do
AshPhoenix.Helpers.get_subdomain(socket, url)
end
end
defp call_handle_subdomain(conn, subdomain, opts) do
case opts[:handle_subdomain] do
{m, f, a} ->
apply(m, f, [conn, subdomain | a])
_ ->
conn
end
end
end