Progress on dms, code cleanup

Progress on dms, code cleanup

db/migrate/20201127051071_create_chat_blocks.rb

@@ -0,0 +1,14 @@
+class CreateChatBlocks < ActiveRecord::Migration[5.2]
+  def change
+    create_table :chat_blocks do |t|
+      t.integer :account_id, null: false
+      t.integer :target_account_id, null: false
+
+      t.timestamps null: false
+    end
+
+    add_index :chat_blocks, [:account_id, :target_account_id], unique: true
+  end
+end
+
+