Refactor to use not create variables in the version schema module

lib/version.ex

@@ -4,26 +4,22 @@ defmodule PaperTrail.Version do
   import Ecto.Changeset
   import Ecto.Query
 
-  @setter PaperTrail.RepoClient.originator || nil
-
+  # @setter PaperTrail.RepoClient.originator()
   # @item_type Application.get_env(:paper_trail, :item_type, :integer)
   # @originator_type Application.get_env(:paper_trail, :originator_type, :integer)
 
   schema "versions" do
-    item_type = Application.get_env(:paper_trail, :item_type, :integer)
-    originator_type = Application.get_env(:paper_trail, :originator_type, :integer)
-
 
     field :event, :string
     field :item_type, :string
-    field :item_id, item_type
+    field :item_id, Application.get_env(:paper_trail, :item_type, :integer)
     field :item_changes, :map
-    field :originator_id, originator_type
+    field :originator_id, Application.get_env(:paper_trail, :originator_type, :integer)
     field :origin, :string, read_after_writes: true
     field :meta, :map
 
-    if @setter do
-      belongs_to @setter[:name], @setter[:model], define_field: false, foreign_key: :originator_id, type: originator_type
+    if PaperTrail.RepoClient.originator() do
+      belongs_to PaperTrail.RepoClient.originator()[:name], PaperTrail.RepoClient.originator()[:model], define_field: false, foreign_key: :originator_id, type: Application.get_env(:paper_trail, :originator_type, :integer)
     end
 
     timestamps(updated_at: false)
@@ -39,7 +35,7 @@ defmodule PaperTrail.Version do
   Returns the count of all version records in the database
   """
   def count do
-    from(version in __MODULE__, select: count(version.id)) |> PaperTrail.RepoClient.repo.one
+    from(version in __MODULE__, select: count(version.id)) |> PaperTrail.RepoClient.repo.one()
   end
   def count(options) do
     from(version in __MODULE__, select: count(version.id))