[Fix #158] Add Rails/DangerousColumnNames cop

Author: r7kamura

changelog/fix_add_rails_dangerous_column_names_cop.md

@@ -0,0 +1 @@
+* [#158](https://github.com/rubocop/rubocop-rails/issues/158): Add `Rails/DangerousColumnNames` cop. ([@r7kamura][])

config/default.yml

@@ -293,6 +293,14 @@ Rails/CreateTableWithTimestamps:
     - db/migrate/*_create_active_storage_tables.active_storage.rb
     - db/migrate/*_create_active_storage_variant_records.active_storage.rb
 
+Rails/DangerousColumnNames:
+  Description: >-
+                  Avoid dangerous column names.
+  Enabled: pending
+  VersionAdded: '<<next>>'
+  Include:
+    - 'db/**/*.rb'
+
 Rails/Date:
   Description: >-
                   Checks the correct usage of date aware methods,