fixes #3372

app/logical/alias_and_implication_importer.rb

@@ -43,8 +43,12 @@ class AliasAndImplicationImporter
       elsif line =~ /^(?:mass update|updating|update|change) (.+?) -> (.*)$/i
         [:mass_update, $1, $2]
 
+      elsif line =~ /^category (\S+) -> (#{Tag.categories.regexp})/
+        [:change_category, $1, $2]
+
       elsif line.strip.empty?
         # do nothing
+
       else
         raise "Unparseable line: #{line}"
       end
@@ -66,7 +70,7 @@ class AliasAndImplicationImporter
           raise "Error: #{tag_implication.errors.full_messages.join("; ")} (create implication #{tag_implication.antecedent_name} -> #{tag_implication.consequent_name})"
         end
 
-      when :remove_alias, :remove_implication, :mass_update
+      when :remove_alias, :remove_implication, :mass_update, :change_category
         # okay
 
       else
@@ -107,7 +111,13 @@ private
           tag_implication.destroy
 
         when :mass_update
-          Delayed::Job.enqueue(Moderator::TagBatchChange.new(token[1], token[2], CurrentUser.user, CurrentUser.ip_addr), :queue => "default")
+          Delayed::Job.enqueue(Moderator::TagBatchChange.new(token[1], token[2], CurrentUser.id, CurrentUser.ip_addr), :queue => "default")
+
+        when :change_category
+          tag = Tag.find_by_name(token[1])
+          tag.category = Tag.categories.value_for(token[2])
+          tag.save
+          tag.update_category_cache_for_all
 
         else
           raise "Unknown token: #{token[0]}"

app/models/tag.rb

@@ -149,7 +149,7 @@ class Tag < ApplicationRecord
     end
 
     def update_category_cache
-      Cache.put("tc:#{Cache.hash(name)}", category, 1.hour)
+      Cache.put("tc:#{Cache.hash(name)}", category, 3.hours)
     end
   end
 
@@ -221,7 +221,7 @@ class Tag < ApplicationRecord
           # next few lines if the category is changed.
           tag.update_category_cache
 
-          if category_id != tag.category && !tag.is_locked? && (CurrentUser.is_builder? || tag.post_count <= 50)
+          if category_id != tag.category && !tag.is_locked? && ((CurrentUser.is_builder? && tag.post_count < 10_000) || tag.post_count <= 50)
             tag.update_column(:category, category_id)
             tag.update_category_cache_for_all
           end

app/views/bulk_update_requests/_form.html.erb

@@ -12,6 +12,7 @@ unimply aaa -> bbb
 alias aaa -> bbb
 imply aaa -> bbb
 update aaa -> bbb
+category tag_name -> category_name
 </pre>
     <%= text_area :bulk_update_request, :script, :size => "50x10" %>
   </div>

test/unit/alias_and_implication_importer_test.rb

@@ -12,6 +12,20 @@ class AliasAndImplicationImporterTest < ActiveSupport::TestCase
       CurrentUser.ip_addr = nil
     end
 
+    context "category command" do
+      setup do
+        @tag = Tag.find_or_create_by_name("hello")
+        @list = "category hello -> artist\n"
+        @importer = AliasAndImplicationImporter.new(@list, nil)
+      end
+
+      should "work" do
+        @importer.process!
+        @tag.reload
+        assert_equal(Tag.categories.value_for("artist"), @tag.category)
+      end
+    end
+
     context "given a valid list" do
       setup do
         @list = "create alias abc -> def\ncreate implication aaa -> bbb\n"