add topic/thread list view

apps/topics.lua

@@ -12,6 +12,8 @@ local Avatars = models.Avatars
 local Topics = models.Topics
 local Threads = models.Threads
 
+local THREADS_PER_PAGE = 10
+
 local ThreadCreateError = {
   OK = 0,
   GUEST = 1,
@@ -53,8 +55,10 @@ app:post("topic_create", "/create", function(self)
     description = topic_description,
     slug = slug,
   })
+  
+  util.inject_infobox(self, "Topic created.")
 
-  return {redirect_to = self:url_for("all_topics")}
+  return {redirect_to = self:url_for("topic", {slug = topic.slug})}
 end)
 
 app:get("topic", "/:slug", function(self)
@@ -64,11 +68,51 @@ app:get("topic", "/:slug", function(self)
   if not topic then
     return {status = 404}
   end
+  local threads_count = Threads:count(db.clause({
+    topic_id = topic.id
+  }))
   self.topic = topic
-  self.threads_list = db.query("SELECT * FROM threads WHERE topic_id = ? ORDER BY is_stickied DESC, created_at DESC", topic.id)
+
+  self.pages = math.ceil(threads_count / THREADS_PER_PAGE)
+  self.page = math.max(1, math.min(tonumber(self.params.page) or 1, self.pages))
+  -- self.threads_list = db.query("SELECT * FROM threads WHERE topic_id = ? ORDER BY is_stickied DESC, created_at DESC", topic.id)
+  self.threads_list = db.query([[
+    SELECT
+      threads.title, threads.slug, threads.created_at, threads.is_locked, threads.is_stickied,
+      users.username AS started_by,
+      u.username AS latest_post_username,
+      ph.content AS latest_post_content,
+      posts.created_at AS latest_post_created_at,
+      posts.id AS latest_post_id
+    FROM
+      threads
+    JOIN users ON users.id = threads.user_id
+    JOIN (
+      SELECT
+        posts.thread_id,
+        posts.id,
+        posts.user_id,
+        posts.created_at,
+        posts.current_revision_id,
+        ROW_NUMBER() OVER (PARTITION BY posts.thread_id ORDER BY posts.created_at DESC) AS rn
+      FROM
+        posts
+    ) posts ON posts.thread_id = threads.id AND posts.rn = 1
+    JOIN
+      post_history ph ON ph.id = posts.current_revision_id
+    JOIN
+      users u ON u.id = posts.user_id
+    WHERE
+      threads.topic_id = ?
+    ORDER BY
+      threads.is_stickied DESC,
+      threads.created_at DESC
+    LIMIT ? OFFSET ?
+  ]], topic.id, THREADS_PER_PAGE, (self.page - 1) * THREADS_PER_PAGE)
+  
   local user = util.get_logged_in_user_or_transient(self)
-  print(topic.is_locked, type(topic.is_locked))
   self.me = user
+  
   self.ThreadCreateError = ThreadCreateError
   self.thread_create_error = ThreadCreateError.OK
   if user:is_logged_in_guest() then
@@ -79,7 +123,7 @@ app:get("topic", "/:slug", function(self)
     self.thread_create_error = ThreadCreateError.TOPIC_LOCKED
   end
   
-  self.page_title = "all threads in " .. topic.name
+  self.page_title = "browsing topic " .. topic.name
   
   return {render = "topics.topic"}
 end)