feat: snapshot-based migration generator

.credo.exs

@@ -87,7 +87,7 @@
         # If you don't want TODO comments to cause `mix credo` to fail, just
         # set this value to 0 (zero).
         #
-        {Credo.Check.Design.TagTODO, [exit_status: 2]},
+        {Credo.Check.Design.TagTODO, false},
         {Credo.Check.Design.TagFIXME, []},
 
         #

.formatter.exs

@@ -1,6 +1,6 @@
 # THIS FILE IS AUTOGENERATED USING `mix ash.formatter`
 # DONT MODIFY IT BY HAND
-locals_without_parens = [repo: 1, table: 1]
+locals_without_parens = [migrate?: 1, repo: 1, table: 1]
 
 [
   inputs: ["{mix,.formatter}.exs", "{config,lib,test}/**/*.{ex,exs}"],

.gitignore

@@ -22,3 +22,6 @@ erl_crash.dump
 # Ignore package tarball (built via "mix hex.build").
 ash_postgres-*.tar
 
+test_migration_path
+test_snapshots_path
+

config/config.exs

@@ -20,7 +20,7 @@ if Mix.env() == :test do
 
   config :ash_postgres, AshPostgres.TestRepo,
     username: "postgres",
-    database: "postgres",
+    database: "ash_postgres_test",
     hostname: "localhost",
     pool: Ecto.Adapters.SQL.Sandbox
 

lib/ash_postgres.ex

@@ -18,4 +18,9 @@ defmodule AshPostgres do
   def table(resource) do
     Extension.get_opt(resource, [:postgres], :table, nil, true)
   end
+
+  @doc "Whether or not the resource should be included when generating migrations"
+  def migrate?(resource) do
+    Extension.get_opt(resource, [:postgres], :migrate?, nil, true)
+  end
 end

lib/data_layer.ex

@@ -36,6 +36,12 @@ defmodule AshPostgres.DataLayer do
         doc:
           "The repo that will be used to fetch your data. See the `AshPostgres.Repo` documentation for more"
       ],
+      migrate?: [
+        type: :boolean,
+        default: true,
+        doc:
+          "Whether or not to include this resource in the generated migrations with `mix ash.generate_migrations`"
+      ],
       table: [
         type: :string,
         required: true,
@@ -44,7 +50,6 @@ defmodule AshPostgres.DataLayer do
     ]
   }
 
-  alias Ash.DataLayer.Delegate
   alias Ash.Filter
   alias Ash.Filter.{Expression, Not, Predicate}
   alias Ash.Filter.Predicate.{Eq, GreaterThan, In, IsNil, LessThan}
@@ -91,14 +96,12 @@ defmodule AshPostgres.DataLayer do
   def can?(_, :upsert), do: true
 
   def can?(resource, {:join, other_resource}) do
-    other_resource = Delegate.get_delegated(other_resource)
     data_layer = Ash.Resource.data_layer(resource)
     other_data_layer = Ash.Resource.data_layer(other_resource)
     data_layer == other_data_layer and repo(data_layer) == repo(other_data_layer)
   end
 
   def can?(resource, {:lateral_join, other_resource}) do
-    other_resource = Delegate.get_delegated(other_resource)
     data_layer = Ash.Resource.data_layer(resource)
     other_data_layer = Ash.Resource.data_layer(other_resource)
     data_layer == other_data_layer and repo(data_layer) == repo(other_data_layer)
@@ -1121,6 +1124,6 @@ defmodule AshPostgres.DataLayer do
   end
 
   defp maybe_get_resource_query(resource) do
-    {table(Delegate.get_delegated(resource)), resource}
+    {table(resource), resource}
   end
 end