improvement: Add float type (#20)

lib/resource/resource.ex

@@ -2103,6 +2103,7 @@ defmodule AshGraphql.Resource do
   defp do_field_type(Ash.Type.UtcDatetime, _, _), do: :naive_datetime
   defp do_field_type(Ash.Type.UtcDatetimeUsec, _, _), do: :naive_datetime
   defp do_field_type(Ash.Type.UUID, _, _), do: :string
+  defp do_field_type(Ash.Type.Float, _, _), do: :float
 
   # sobelow_skip ["DOS.StringToAtom"]
   defp atom_enum_type(resource, attribute_name) do

test/read_test.exs

@@ -14,6 +14,35 @@ defmodule AshGraphql.ReadTest do
     end)
   end
 
+  test "float fields works correctly" do
+    AshGraphql.Test.Post
+    |> Ash.Changeset.for_create(:create, text: "foo", published: true, score: 9.8)
+    |> AshGraphql.Test.Api.create!()
+
+    AshGraphql.Test.Post
+    |> Ash.Changeset.for_create(:create, text: "bar", published: true, score: 9.85)
+    |> AshGraphql.Test.Api.create!()
+
+    resp =
+      """
+      query PostScore($score: Float) {
+        postScore(score: $score) {
+          text
+        }
+      }
+      """
+      |> Absinthe.run(AshGraphql.Test.Schema,
+        variables: %{
+          "score" => 9.8
+        }
+      )
+
+    assert {:ok, result} = resp
+
+    refute Map.has_key?(result, :errors)
+    assert %{data: %{"postScore" => [%{"text" => "foo"}]}} = result
+  end
+
   test "a read with arguments works" do
     AshGraphql.Test.Post
     |> Ash.Changeset.for_create(:create, text: "foo", published: true)

test/support/resources/post.ex

@@ -11,6 +11,7 @@ defmodule AshGraphql.Test.Post do
     queries do
       get :get_post, :read
       list :post_library, :library
+      list :post_score, :score
       list :paginated_posts, :paginated
     end
 
@@ -70,6 +71,12 @@ defmodule AshGraphql.Test.Post do
       )
     end
 
+    read :score do
+      argument(:score, :float, allow_nil?: true)
+
+      filter(expr(score == ^arg(:score)))
+    end
+
     read :best_post do
       filter(expr(best == true))
     end
@@ -87,6 +94,7 @@ defmodule AshGraphql.Test.Post do
     attribute(:status, AshGraphql.Test.Status)
     attribute(:status_enum, AshGraphql.Test.StatusEnum)
     attribute(:best, :boolean)
+    attribute(:score, :float)
   end
 
   calculations do