From d9aebaec1c307d046709d09e0d13afd9bc242175 Mon Sep 17 00:00:00 2001
From: Zach Daniel <zach@zachdaniel.dev>
Date: Wed, 3 Apr 2024 07:28:19 -0400
Subject: [PATCH] improvement: add `skip_unknown_inputs` for generic actions

---
 lib/ash/action_input.ex | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/lib/ash/action_input.ex b/lib/ash/action_input.ex
index a15b7aae..6e96c7f0 100644
--- a/lib/ash/action_input.ex
+++ b/lib/ash/action_input.ex
@@ -67,7 +67,7 @@ defmodule Ash.ActionInput do
     {input, _opts} = Ash.Actions.Helpers.set_context_and_get_opts(input.domain, input, opts)
 
     input
-    |> cast_params(params)
+    |> cast_params(params, opts)
     |> require_arguments()
   end
 
@@ -177,12 +177,14 @@ defmodule Ash.ActionInput do
     %{input | context: Ash.Helpers.deep_merge_maps(input.context, map)}
   end
 
-  defp cast_params(input, params) do
+  defp cast_params(input, params, opts) do
     input = %{
       input
       | params: Map.merge(input.params, Enum.into(params, %{}))
     }
 
+    skip_unknown_inputs = opts[:skip_unknown_inputs] || []
+
     Enum.reduce(params, input, fn {name, value}, input ->
       cond do
         has_argument?(input.action, name) ->
@@ -191,6 +193,9 @@ defmodule Ash.ActionInput do
         match?("_" <> _, name) ->
           input
 
+        name in skip_unknown_inputs ->
+          input
+
         true ->
           error =
             Ash.Error.Invalid.NoSuchInput.exception(