Upgrade to rails 6 💎 (#11)

- upgraded to rails 6
- fixes various issues

db/migrate/20170207092002_acts_as_taggable_on_migration.acts_as_taggable_on_engine.rb

@@ -1,5 +1,5 @@
 # This migration comes from acts_as_taggable_on_engine (originally 1)
-class ActsAsTaggableOnMigration < ActiveRecord::Migration
+class ActsAsTaggableOnMigration < ActiveRecord::Migration[5.0]
   def self.up
     create_table :tags do |t|
       t.string :name
@@ -20,7 +20,6 @@ class ActsAsTaggableOnMigration < ActiveRecord::Migration
       t.datetime :created_at
     end
 
-    add_index :taggings, :tag_id
     add_index :taggings, [:taggable_id, :taggable_type, :context]
   end
 

db/migrate/20170207092003_add_missing_unique_indices.acts_as_taggable_on_engine.rb

@@ -1,5 +1,5 @@
 # This migration comes from acts_as_taggable_on_engine (originally 2)
-class AddMissingUniqueIndices < ActiveRecord::Migration
+class AddMissingUniqueIndices < ActiveRecord::Migration[5.0]
   def self.up
     add_index :tags, :name, unique: true
 

db/migrate/20170207092004_add_taggings_counter_cache_to_tags.acts_as_taggable_on_engine.rb

@@ -1,5 +1,5 @@
 # This migration comes from acts_as_taggable_on_engine (originally 3)
-class AddTaggingsCounterCacheToTags < ActiveRecord::Migration
+class AddTaggingsCounterCacheToTags < ActiveRecord::Migration[5.0]
   def self.up
     add_column :tags, :taggings_count, :integer, default: 0
 

db/migrate/20170207092005_add_missing_taggable_index.acts_as_taggable_on_engine.rb

@@ -1,5 +1,5 @@
 # This migration comes from acts_as_taggable_on_engine (originally 4)
-class AddMissingTaggableIndex < ActiveRecord::Migration
+class AddMissingTaggableIndex < ActiveRecord::Migration[5.0]
   def self.up
     add_index :taggings, [:taggable_id, :taggable_type, :context]
   end

db/migrate/20170207092006_change_collation_for_tag_names.acts_as_taggable_on_engine.rb

@@ -1,7 +1,7 @@
 # This migration comes from acts_as_taggable_on_engine (originally 5)
 # This migration is added to circumvent issue #623 and have special characters
 # work properly
-class ChangeCollationForTagNames < ActiveRecord::Migration
+class ChangeCollationForTagNames < ActiveRecord::Migration[5.0]
   def up
     if ActsAsTaggableOn::Utils.using_mysql?
       execute("ALTER TABLE tags MODIFY name varchar(255) CHARACTER SET utf8 COLLATE utf8_bin;")

db/migrate/20170207092007_add_missing_indexes.acts_as_taggable_on_engine.rb

@@ -1,5 +1,5 @@
 # This migration comes from acts_as_taggable_on_engine (originally 6)
-class AddMissingIndexes < ActiveRecord::Migration
+class AddMissingIndexes < ActiveRecord::Migration[5.0]
   def change
     add_index :taggings, :tag_id
     add_index :taggings, :taggable_id

db/migrate/20170406095417_create_trigger_conversations_insert.rb

@@ -1,5 +1,5 @@
 
-class CreateTriggerConversationsInsert < ActiveRecord::Migration
+class CreateTriggerConversationsInsert < ActiveRecord::Migration[5.0]
   def up
     change_column :conversations, :display_id, :integer, :null => false
   end

db/migrate/20190819005836_add_missing_indexes_on_taggings.acts_as_taggable_on_engine.rb

@@ -0,0 +1,23 @@
+# This migration comes from acts_as_taggable_on_engine (originally 6)
+if ActiveRecord.gem_version >= Gem::Version.new('5.0')
+  class AddMissingIndexesOnTaggings < ActiveRecord::Migration[4.2]; end
+else
+  class AddMissingIndexesOnTaggings < ActiveRecord::Migration; end
+end
+AddMissingIndexesOnTaggings.class_eval do
+  def change
+    add_index ActsAsTaggableOn.taggings_table, :tag_id unless index_exists? ActsAsTaggableOn.taggings_table, :tag_id
+    add_index ActsAsTaggableOn.taggings_table, :taggable_id unless index_exists? ActsAsTaggableOn.taggings_table, :taggable_id
+    add_index ActsAsTaggableOn.taggings_table, :taggable_type unless index_exists? ActsAsTaggableOn.taggings_table, :taggable_type
+    add_index ActsAsTaggableOn.taggings_table, :tagger_id unless index_exists? ActsAsTaggableOn.taggings_table, :tagger_id
+    add_index ActsAsTaggableOn.taggings_table, :context unless index_exists? ActsAsTaggableOn.taggings_table, :context
+
+    unless index_exists? ActsAsTaggableOn.taggings_table, [:tagger_id, :tagger_type]
+      add_index ActsAsTaggableOn.taggings_table, [:tagger_id, :tagger_type]
+    end
+
+    unless index_exists? ActsAsTaggableOn.taggings_table, [:taggable_id, :taggable_type, :tagger_id, :context], name: 'taggings_idy'
+      add_index ActsAsTaggableOn.taggings_table, [:taggable_id, :taggable_type, :tagger_id, :context], name: 'taggings_idy'
+    end
+  end
+end

db/migrate/20190819010457_create_channels.rb

@@ -0,0 +1,8 @@
+class CreateChannels < ActiveRecord::Migration[6.1]
+  def change
+    create_table :channels do |t|
+      t.string :name
+      t.timestamps
+    end
+  end
+end