feat: Add array modifier to ash.gen.resource

lib/mix/tasks/gen/ash.gen.resource.ex

@@ -22,7 +22,7 @@ if Code.ensure_loaded?(Igniter) do
 
     ## Options
 
-    * `--attribute` or `-a` - An attribute or comma separated list of attributes to add, as `name:type`. Modifiers: `primary_key`, `public`, `sensitive`, and `required`. i.e `-a name:string:required`
+    * `--attribute` or `-a` - An attribute or comma separated list of attributes to add, as `name:type`. Modifiers: `primary_key`, `array`, `public`, `sensitive`, and `required`. i.e `-a name:string:required`
     * `--relationship` or `-r` - A relationship or comma separated list of relationships to add, as `type:name:dest`. Modifiers: `public`. `belongs_to` only modifiers: `primary_key`, `sensitive`, and `required`. i.e `-r belongs_to:author:MyApp.Accounts.Author:required`
     * `--default-actions` - A csv list of default action types to add. The `create` and `update` actions accept the public attributes being added.
     * `--uuid-primary-key` or `-u` - Adds a UUIDv4 primary key with that name. i.e `-u id`
@@ -223,6 +223,9 @@ if Code.ensure_loaded?(Igniter) do
         "sensitive" ->
           "sensitive? true"
 
+        "array" ->
+          "array"
+
         unknown ->
           raise ArgumentError,
                 """
@@ -343,7 +346,11 @@ if Code.ensure_loaded?(Igniter) do
             end
 
             name_atom = String.to_atom(name)
-            type = resolve_type(type)
+
+            {type, modifiers} =
+              if Enum.any?(modifiers, &(&1 == "array")),
+                do: {{:array, resolve_type(type)}, modifiers -- ["array"]},
+                else: {resolve_type(type), modifiers}
 
             attribute_code =
               if Enum.empty?(modifiers) do

test/mix/tasks/ash.gen.resource_test.exs

@@ -79,6 +79,32 @@ defmodule Mix.Tasks.Ash.Gen.ResourceTest do
       """)
     end
 
+    test "generates array attributes with modifiers" do
+      test_project()
+      |> Igniter.compose_task("ash.gen.resource", [
+        "MyApp.Blog.Post",
+        "--attribute",
+        "list_atom:atom:array:public,list_string:string:array:required"
+      ])
+      |> assert_creates("lib/my_app/blog/post.ex", """
+      defmodule MyApp.Blog.Post do
+        use Ash.Resource,
+          otp_app: :test,
+          domain: MyApp.Blog
+
+        attributes do
+          attribute :list_atom, {:array, :atom} do
+            public?(true)
+          end
+
+          attribute :list_string, {:array, :string} do
+            allow_nil?(false)
+          end
+        end
+      end
+      """)
+    end
+
     test "generates attributes with custom types" do
       test_project()
       |> Igniter.compose_task("ash.gen.resource", [
@@ -751,12 +777,12 @@ defmodule Mix.Tasks.Ash.Gen.ResourceTest do
 
         attributes do
           uuid_primary_key(:id)
-          
+
           attribute :title, :string do
             public? true
           end
         end
-        
+
         actions do
           defaults [:read]
         end