move i18n of UserActions to JS-side and make sentences translatable

app/models/user_action.rb

@@ -36,7 +36,7 @@ class UserAction < ActiveRecord::Base
   ].each_with_index.to_a.flatten]
 
   def self.stats(user_id, guardian)
-    results = UserAction.select("action_type, COUNT(*) count, '' AS description")
+    results = UserAction.select("action_type, COUNT(*) count")
       .joins(:target_topic)
       .where(user_id: user_id)
       .group('action_type')
@@ -53,9 +53,6 @@ class UserAction < ActiveRecord::Base
     results = results.to_a
 
     results.sort! { |a,b| ORDER[a.action_type] <=> ORDER[b.action_type] }
-    results.each do |row|
-      row.description = self.description(row.action_type, detailed: true)
-    end
 
     results
   end
@@ -122,7 +119,6 @@ JOIN users pu on pu.id = COALESCE(p.user_id, t.user_id)
 
     data.each do |row|
       row["action_type"] = row["action_type"].to_i
-      row["description"] = self.description(row["action_type"])
       row["created_at"] = DateTime.parse(row["created_at"])
       # we should probably cache the excerpts in the db at some point
       row["excerpt"] = PrettyText.excerpt(row["cooked"],300) if row["cooked"]
@@ -137,60 +133,6 @@ JOIN users pu on pu.id = COALESCE(p.user_id, t.user_id)
     data
   end
 
-  def self.description(row, opts = {})
-    t = I18n.t('user_action_descriptions')
-    if opts[:detailed]
-      # will localize as soon as we stablize the names here
-      desc = case row.to_i
-      when BOOKMARK
-        t[:bookmarks]
-      when NEW_TOPIC
-        t[:topics]
-      when WAS_LIKED
-        t[:likes_received]
-      when LIKE
-        t[:likes_given]
-      when RESPONSE
-        t[:responses]
-      when POST
-        t[:posts]
-      when MENTION
-        t[:mentions]
-      when QUOTE
-        t[:quotes]
-      when EDIT
-        t[:edits]
-      when STAR
-        t[:favorites]
-      when NEW_PRIVATE_MESSAGE
-        t[:sent_items]
-      when GOT_PRIVATE_MESSAGE
-        t[:inbox]
-      end
-    else
-      desc =
-      case row.to_i
-      when NEW_TOPIC
-        then t[:posted]
-      when LIKE,WAS_LIKED
-        then t[:liked]
-      when RESPONSE,POST
-        then t[:responded_to]
-      when BOOKMARK
-        then t[:bookmarked]
-      when MENTION
-        then t[:mentioned]
-      when QUOTE
-        then t[:quoted]
-      when STAR
-        then t[:favorited]
-      when EDIT
-        then t[:edited]
-      end
-    end
-    desc
-  end
-
   def self.log_action!(hash)
     require_parameters(hash, :action_type, :user_id, :acting_user_id, :target_topic_id, :target_post_id)
     transaction(requires_new: true) do