finish topic moving

lib/philomena/topics.ex

@@ -210,9 +210,29 @@ defmodule Philomena.Topics do
     |> Repo.update()
   end
   
-  def move_topic(%Topic{} = topic, attrs) do
-    Topic.move_changeset(topic, attrs)
-    |> Repo.update()
+  def move_topic(topic, new_forum_id) do
+    old_forum_id = topic.forum_id
+    topic_changes = Topic.move_changeset(topic, new_forum_id)
+
+    Multi.new
+    |> Multi.update(:topic, topic_changes)
+    |> Multi.run(:update_old_forum, fn repo, %{topic: topic} ->
+      {count, nil} =
+        Forum
+        |> where(id: ^old_forum_id)
+        |> repo.update_all(inc: [post_count: -topic.post_count, topic_count: -1])
+
+      {:ok, count}
+    end)
+    |> Multi.run(:update_new_forum, fn repo, %{topic: topic} ->
+      {count, nil} =
+        Forum
+        |> where(id: ^topic.forum_id)
+        |> repo.update_all(inc: [post_count: topic.post_count, topic_count: 1])
+
+      {:ok, count}
+    end)
+    |> Repo.isolated_transaction(:serializable)
   end
 
   def clear_notification(nil, _user), do: nil

lib/philomena/topics/topic.ex

@@ -91,9 +91,9 @@ defmodule Philomena.Topics.Topic do
     |> put_change(:lock_reason, "")
   end
 
-  def move_changeset(topic, attrs) do
+  def move_changeset(topic, new_forum_id) do
     change(topic)
-    |> put_change(:forum_id, attrs["target_forum_id"] |> String.to_integer())
+    |> put_change(:forum_id, new_forum_id)
   end
 
   def put_slug(changeset) do

lib/philomena_web/controllers/topic/lock_controller.ex

@@ -19,11 +19,11 @@ defmodule PhilomenaWeb.Topic.LockController do
       {:ok, topic} ->
         conn
         |> put_flash(:info, "Topic successfully locked!")
-        |> redirect(to: Routes.forum_topic_path(conn, :show, topic.forum_id, topic.id))
+        |> redirect(to: Routes.forum_topic_path(conn, :show, topic.forum, topic))
       {:error, _changeset} ->
         conn
         |> put_flash(:error, "Unable to lock the topic!")
-        |> redirect(to: Routes.forum_topic_path(conn, :show, topic.forum_id, topic.id))
+        |> redirect(to: Routes.forum_topic_path(conn, :show, topic.forum, topic))
     end
   end
 
@@ -34,17 +34,18 @@ defmodule PhilomenaWeb.Topic.LockController do
       {:ok, topic} ->
         conn
         |> put_flash(:info, "Topic successfully unlocked!")
-        |> redirect(to: Routes.forum_topic_path(conn, :show, topic.forum_id, topic.id))
+        |> redirect(to: Routes.forum_topic_path(conn, :show, topic.forum, topic))
       {:error, _changeset} ->
         conn
         |> put_flash(:error, "Unable to unlock the topic!")
-        |> redirect(to: Routes.forum_topic_path(conn, :show, topic.forum_id, topic.id))
+        |> redirect(to: Routes.forum_topic_path(conn, :show, topic.forum, topic))
     end
   end
 
   defp load_topic(conn, _opts) do
     topic = Topic
     |> where(forum_id: ^conn.params["forum_id"], slug: ^conn.params["topic_id"])
+    |> preload([:forum])
     |> Repo.one()
 
     Plug.Conn.assign(conn, :topic, topic)

lib/philomena_web/controllers/topic/move_controller.ex

@@ -15,16 +15,21 @@ defmodule PhilomenaWeb.Topic.MoveController do
   # todo: moving
   def create(conn, %{"topic" => topic_params}) do
     topic = conn.assigns.topic
+    target_forum_id = String.to_integer(topic_params["target_forum_id"])
+
+    case Topics.move_topic(topic, target_forum_id) do
+      {:ok, %{topic: topic}} ->
+        topic = Repo.preload(topic, :forum)
 
-    case Topics.move_topic(topic, topic_params) do
-      {:ok, topic} ->
         conn
         |> put_flash(:info, "Topic successfully moved!")
-        |> redirect(to: Routes.forum_topic_path(conn, :show, topic_params["target_forum_id"] |> String.to_integer(), topic.id))
+        |> redirect(to: Routes.forum_topic_path(conn, :show, topic.forum, topic))
       {:error, _changeset} ->
+        topic = Repo.preload(topic, :forum)
+
         conn
         |> put_flash(:error, "Unable to move the topic!")
-        |> redirect(to: Routes.forum_topic_path(conn, :show, topic.forum_id, topic.id))
+        |> redirect(to: Routes.forum_topic_path(conn, :show, topic.forum, topic))
     end
   end
 

lib/philomena_web/controllers/topic/post/delete_controller.ex

@@ -5,7 +5,7 @@ defmodule PhilomenaWeb.Topic.Post.DeleteController do
   alias Philomena.Posts
 
   plug PhilomenaWeb.CanaryMapPlug, create: :hide
-  plug :load_and_authorize_resource, model: Post, id_name: "post_id", persisted: true, preload: [:topic]
+  plug :load_and_authorize_resource, model: Post, id_name: "post_id", persisted: true, preload: [:topic, topic: :forum]
 
   def create(conn, _params) do
     post = conn.assigns.post
@@ -16,12 +16,12 @@ defmodule PhilomenaWeb.Topic.Post.DeleteController do
 
         conn
         |> put_flash(:info, "Post successfully destroyed!")
-        |> redirect(to: Routes.forum_topic_path(conn, :show, post.topic.forum_id, post.topic_id) <> "#post_#{post.id}")
+        |> redirect(to: Routes.forum_topic_path(conn, :show, post.topic.forum, post.topic) <> "#post_#{post.id}")
 
       {:error, _changeset} ->
         conn
         |> put_flash(:error, "Unable to destroy post!")
-        |> redirect(to: Routes.forum_topic_path(conn, :show, post.topic.forum_id, post.topic_id) <> "#post_#{post.id}")
+        |> redirect(to: Routes.forum_topic_path(conn, :show, post.topic.forum, post.topic) <> "#post_#{post.id}")
     end
   end
 end

lib/philomena_web/controllers/topic/post/hide_controller.ex

@@ -5,7 +5,7 @@ defmodule PhilomenaWeb.Topic.Post.HideController do
   alias Philomena.Posts
 
   plug PhilomenaWeb.CanaryMapPlug, create: :hide, delete: :hide
-  plug :load_and_authorize_resource, model: Post, id_name: "post_id", persisted: true, preload: [:topic]
+  plug :load_and_authorize_resource, model: Post, id_name: "post_id", persisted: true, preload: [:topic, topic: :forum]
 
   def create(conn, %{"post" => post_params}) do
     post = conn.assigns.post
@@ -17,11 +17,11 @@ defmodule PhilomenaWeb.Topic.Post.HideController do
 
         conn
         |> put_flash(:info, "Post successfully hidden!")
-        |> redirect(to: Routes.forum_topic_path(conn, :show, post.topic.forum_id, post.topic_id) <> "#post_#{post.id}")
+        |> redirect(to: Routes.forum_topic_path(conn, :show, post.topic.forum, post.topic) <> "#post_#{post.id}")
       {:error, _changeset} ->
         conn
         |> put_flash(:error, "Unable to hide post!")
-        |> redirect(to: Routes.forum_topic_path(conn, :show, post.topic.forum_id,  post.topic_id) <> "#post_#{post.id}")
+        |> redirect(to: Routes.forum_topic_path(conn, :show, post.topic.forum, post.topic) <> "#post_#{post.id}")
     end
   end
 
@@ -34,11 +34,11 @@ defmodule PhilomenaWeb.Topic.Post.HideController do
 
         conn
         |> put_flash(:info, "Post successfully unhidden!")
-        |> redirect(to: Routes.forum_topic_path(conn, :show, post.topic.forum_id,  post.topic_id) <> "#post_#{post.id}")
+        |> redirect(to: Routes.forum_topic_path(conn, :show, post.topic.forum, post.topic) <> "#post_#{post.id}")
       {:error, _changeset} ->
         conn
         |> put_flash(:error, "Unable to unhide post!")
-        |> redirect(to: Routes.forum_topic_path(conn, :show, post.topic.forum_id,  post.topic_id) <> "#post_#{post.id}")
+        |> redirect(to: Routes.forum_topic_path(conn, :show, post.topic.forum, post.topic) <> "#post_#{post.id}")
     end
   end
 end

lib/philomena_web/controllers/topic/stick_controller.ex

@@ -18,11 +18,11 @@ defmodule PhilomenaWeb.Topic.StickController do
       {:ok, topic} ->
         conn
         |> put_flash(:info, "Topic successfully stickied!")
-        |> redirect(to: Routes.forum_topic_path(conn, :show, topic.forum_id, topic.id))
+        |> redirect(to: Routes.forum_topic_path(conn, :show, topic.forum, topic))
       {:error, _changeset} ->
         conn
         |> put_flash(:error, "Unable to stick the topic!")
-        |> redirect(to: Routes.forum_topic_path(conn, :show, topic.forum_id, topic.id))
+        |> redirect(to: Routes.forum_topic_path(conn, :show, topic.forum, topic))
     end
   end
 
@@ -33,17 +33,18 @@ defmodule PhilomenaWeb.Topic.StickController do
       {:ok, topic} ->
         conn
         |> put_flash(:info, "Topic successfully unstickied!")
-        |> redirect(to: Routes.forum_topic_path(conn, :show, topic.forum_id, topic.id))
+        |> redirect(to: Routes.forum_topic_path(conn, :show, topic.forum, topic))
       {:error, _changeset} ->
         conn
         |> put_flash(:error, "Unable to unstick the topic!")
-        |> redirect(to: Routes.forum_topic_path(conn, :show, topic.forum_id, topic.id))
+        |> redirect(to: Routes.forum_topic_path(conn, :show, topic.forum, topic))
     end
   end
 
   defp load_topic(conn, _opts) do
     topic = Topic
     |> where(forum_id: ^conn.params["forum_id"], slug: ^conn.params["topic_id"])
+    |> preload([:forum])
     |> Repo.one()
 
     Plug.Conn.assign(conn, :topic, topic)

lib/philomena_web/templates/topic/show.html.slime

@@ -118,13 +118,6 @@ h1 = @topic.title
   /    .toggle-box-container
   /      .toggle-box-container__content
   /        p
-  /        - if can? :move, @topic
-  /          = form_tag forum_topic_move_path(@forum, @topic), method: :post, class: 'hform' do
-  /            .field
-  /              => select_tag :target_forum_id, options_from_collection_for_select(Forum.where.not(id: @forum.id).all, :short_name, :name), class: 'input hform__text'
-  /              => button_tag class: 'hform__button button' do
-  /                i.fa.fa-truck>
-  /                | Move
   /        - if can?(:destroy, @topic) && !@topic.hidden_from_users
   /          = form_tag forum_topic_hide_path(@forum, @topic), method: :post, class: 'hform' do
   /            .field