Use compile with opts for comment queries

lib/philomena/comments/query.ex

@@ -92,7 +92,8 @@ defmodule Philomena.Comments.Query do
     |> Parser.parse(query_string, context)
   end
 
-  def compile(user, query_string) do
+  def compile(query_string, opts \\ []) do
+    user = Keyword.get(opts, :user)
     query_string = query_string || ""
 
     case user do

lib/philomena_web/controllers/api/json/search/comment_controller.ex

@@ -10,7 +10,7 @@ defmodule PhilomenaWeb.Api.Json.Search.CommentController do
     user = conn.assigns.current_user
     filter = conn.assigns.current_filter
 
-    case Query.compile(user, params["q"] || "") do
+    case Query.compile(params["q"], user: user) do
       {:ok, query} ->
         comments =
           Comment

lib/philomena_web/controllers/comment_controller.ex

@@ -13,8 +13,8 @@ defmodule PhilomenaWeb.CommentController do
     conn = Map.put(conn, :params, params)
     user = conn.assigns.current_user
 
-    user
-    |> Query.compile(cq)
+    cq
+    |> Query.compile(user: user)
     |> render_index(conn, user)
   end