use correct org_id

lib/policy_service_web/controllers/policy_controller.ex

@@ -31,7 +31,7 @@ defmodule PolicyServiceWeb.PolicyController do
   )
 
   def index(conn, params) do
-    org_id = conn.assigns[:org_id]
+    org_id = conn.private[PolicyServiceWeb.Plugs.ExtractOrganizationId]
 
     case PolicyQueries.list_by_org(org_id, params) do
       {:ok, {policies, meta}} ->
@@ -63,7 +63,7 @@ defmodule PolicyServiceWeb.PolicyController do
   )
 
   def show(conn, %{"application_id" => application_id}) do
-    org_id = conn.assigns[:org_id]
+    org_id = conn.private[PolicyServiceWeb.Plugs.ExtractOrganizationId]
 
     case PolicyQueries.get_by_application_id(org_id, application_id) do
       {:ok, policy} ->
@@ -89,7 +89,7 @@ defmodule PolicyServiceWeb.PolicyController do
 
   def create(conn, params) do
     application_id = Ecto.UUID.generate()
-    org_id = conn.assigns[:org_id]
+    org_id = conn.private[PolicyServiceWeb.Plugs.ExtractOrganizationId]
     submitted_by = conn.assigns[:user_id]
 
     with {:ok, policy_type} <- parse_policy_type(params["policy_type"]),
@@ -173,7 +173,7 @@ defmodule PolicyServiceWeb.PolicyController do
   )
 
   def accept(conn, %{"application_id" => application_id} = params) do
-    org_id = conn.assigns[:org_id]
+    org_id = conn.private[PolicyServiceWeb.Plugs.ExtractOrganizationId]
 
     with {:ok, policy} <- PolicyQueries.get_by_application_id(org_id, application_id) do
       command =